2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
12 * Module: vol-salvage.c
13 * Institution: The Information Technology Center, Carnegie-Mellon University
17 Correct handling of bad "." and ".." entries.
18 Message if volume has "destroyMe" flag set--but doesn't delete yet.
19 Link count bug fixed--bug was that vnodeEssence link count was unsigned
20 14 bits. Needs to be signed.
23 Change to DirHandle stuff to make sure that cache entries are reused at the
24 right time (this parallels the file server change, but is not identical).
26 Added calls to directory salvager routines; doesn't salvage dir unless debug=1.
29 Fixed bug which was causing inode link counts to go bad (thus leaking
31 Vnodes with 0 inode pointers in RW volumes are now deleted.
32 An inode with a matching inode number to the vnode is preferred to an
33 inode with a higer data version.
34 Bug is probably fixed that was causing data version to remain wrong,
35 despite assurances from the salvager to the contrary.
38 Added limited salvaging: unless ForceSalvage is on, then the volume will
39 not be salvaged if the dontSalvage flag is set in the Volume Header.
40 The ForceSalvage flag is turned on if an individual volume is salvaged or
41 if the file FORCESALVAGE exists in the partition header of the file system
42 being salvaged. This isn't used for anything but could be set by vfsck.
43 A -f flag was also added to force salvage.
46 It now deletes obsolete volume inodes without complaining
49 Repairs rw volume headers (again).
52 Correlates volume headers & inodes correctly, thus preventing occasional deletion
53 of read-only volumes...
54 No longer forces a directory salvage for volume 144 (which may be a good volume
56 Some of the messages are cleaned up or made more explicit. One or two added.
58 A bug was fixed which forced salvage of read-only volumes without a corresponding
62 When a volume header is recreated, the new name will be "bogus.volume#"
65 Directory salvaging turned on!!!
68 Prints warning messages for setuid programs.
71 Logs missing inode numbers.
74 Increments directory version number by 200 (rather than by 1) when it is salvaged, in order to prevent problems due to the fact that a version number can be promised to a workstation before it is written to disk. If the server crashes, it may have an older version. Salvaging it could bring the version number up to the same version the workstation believed it already had a call back on.
77 Locks the file /vice/vol/salvage.lock before starting. Aborts if it can't acquire the lock.
78 Time stamps on log entries.
79 Fcntl on stdout to cause all entries to be appended.
80 Problems writing to temporary files are now all detected.
81 Inode summary files are now dynamically named (so that multiple salvagers wouldn't conflict).
82 Some cleanup of error messages.
86 #include <afsconfig.h>
87 #include <afs/param.h>
89 #include <afs/procmgmt.h>
92 #ifdef HAVE_SYS_FILE_H
93 # include <sys/file.h>
97 #include <WINNT/afsevent.h>
100 #define WCOREDUMP(x) ((x) & 0200)
103 #ifdef AFS_PTHREAD_ENV
104 # include <opr/lock.h>
107 #include <afs/afsint.h>
108 #if !defined(AFS_SGI_ENV) && !defined(AFS_NT40_ENV)
109 #if defined(AFS_VFSINCL_ENV)
110 #include <sys/vnode.h>
112 #include <sys/fs/ufs_inode.h>
114 #if defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
115 #include <ufs/ufs/dinode.h>
116 #include <ufs/ffs/fs.h>
118 #include <ufs/inode.h>
121 #else /* AFS_VFSINCL_ENV */
123 #include <ufs/inode.h>
124 #else /* AFS_OSF_ENV */
125 #if !defined(AFS_LINUX20_ENV) && !defined(AFS_XBSD_ENV) && !defined(AFS_DARWIN_ENV)
126 #include <sys/inode.h>
129 #endif /* AFS_VFSINCL_ENV */
130 #endif /* AFS_SGI_ENV */
133 #include <sys/lockf.h>
136 #include <checklist.h>
138 #if defined(AFS_SGI_ENV)
141 #if defined(AFS_SUN_ENV) || defined(AFS_SUN5_ENV)
143 #include <sys/mnttab.h>
144 #include <sys/mntent.h>
149 #endif /* AFS_SGI_ENV */
150 #endif /* AFS_HPUX_ENV */
154 #include <afs/osi_inode.h>
158 #include <afs/afsutil.h>
159 #include <afs/fileutil.h>
160 #include <rx/rx_queue.h>
165 #include <afs/afssyscalls.h>
169 #include "partition.h"
170 #include "daemon_com.h"
171 #include "daemon_com_inline.h"
173 #include "fssync_inline.h"
174 #include "volume_inline.h"
175 #include "salvsync.h"
176 #include "viceinode.h"
178 #include "volinodes.h" /* header magic number, etc. stuff */
179 #include "vol-salvage.h"
181 #include "vol_internal.h"
183 #include <afs/prs_fs.h>
185 #ifdef FSSYNC_BUILD_CLIENT
186 #include "vg_cache.h"
194 extern void *calloc();
196 static char *TimeStamp(time_t clock, int precision);
199 int debug; /* -d flag */
200 extern int Testing; /* -n flag */
201 int ListInodeOption; /* -i flag */
202 int ShowRootFiles; /* -r flag */
203 int RebuildDirs; /* -sal flag */
204 int Parallel = 4; /* -para X flag */
205 int PartsPerDisk = 8; /* Salvage up to 8 partitions on same disk sequentially */
206 int forceR = 0; /* -b flag */
207 int ShowLog = 0; /* -showlog flag */
208 int ShowSuid = 0; /* -showsuid flag */
209 int ShowMounts = 0; /* -showmounts flag */
210 int orphans = ORPH_IGNORE; /* -orphans option */
215 int useSyslog = 0; /* -syslog flag */
216 int useSyslogFacility = LOG_DAEMON; /* -syslogfacility option */
225 #define MAXPARALLEL 32
227 int OKToZap; /* -o flag */
228 int ForceSalvage; /* If salvage should occur despite the DONT_SALVAGE flag
229 * in the volume header */
231 FILE *logFile = 0; /* one of {/usr/afs/logs,/vice/file}/SalvageLog */
233 #define ROOTINODE 2 /* Root inode of a 4.2 Unix file system
236 * information that is 'global' to a particular salvage job.
239 Device fileSysDevice; /**< The device number of the current partition
241 char fileSysPath[9]; /**< The path of the mounted partition currently
242 * being salvaged, i.e. the directory containing
243 * the volume headers */
244 char *fileSysPathName; /**< NT needs this to make name pretty log. */
245 IHandle_t *VGLinkH; /**< Link handle for current volume group. */
246 int VGLinkH_cnt; /**< # of references to lnk handle. */
247 struct DiskPartition64 *fileSysPartition; /**< Partition being salvaged */
250 char *fileSysDeviceName; /**< The block device where the file system being
251 * salvaged was mounted */
252 char *filesysfulldev;
254 int VolumeChanged; /**< Set by any routine which would change the
255 * volume in a way which would require callbacks
256 * to be broken if the volume was put back on
257 * on line by an active file server */
259 VolumeDiskData VolInfo; /**< A copy of the last good or salvaged volume
260 * header dealt with */
262 int nVolumesInInodeFile; /**< Number of read-write volumes summarized */
263 FD_t inodeFd; /**< File descriptor for inode file */
265 struct VolumeSummary *volumeSummaryp; /**< Holds all the volumes in a part */
266 int nVolumes; /**< Number of volumes (read-write and read-only)
267 * in volume summary */
268 struct InodeSummary *inodeSummary; /**< contains info on all the relevant
271 struct VnodeInfo vnodeInfo[nVNODECLASSES]; /**< contains info on all of the
272 * vnodes in the volume that
273 * we are currently looking
275 int useFSYNC; /**< 0 if the fileserver is unavailable; 1 if we should try
276 * to contact the fileserver over FSYNC */
283 /* Forward declarations */
284 static int IsVnodeOrphaned(struct SalvInfo *salvinfo, VnodeId vnode);
285 static int AskVolumeSummary(struct SalvInfo *salvinfo,
286 VolumeId singleVolumeNumber);
287 static void MaybeAskOnline(struct SalvInfo *salvinfo, VolumeId volumeId);
288 static void AskError(struct SalvInfo *salvinfo, VolumeId volumeId);
290 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
291 static int LockVolume(struct SalvInfo *salvinfo, VolumeId volumeId);
292 #endif /* AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL */
294 /* Uniquifier stored in the Inode */
299 return (u & 0x3fffff);
301 #if defined(AFS_SGI_EXMAG)
302 return (u & SGI_UNIQMASK);
305 #endif /* AFS_SGI_EXMAG */
312 if (aerror == EPERM || aerror == ENXIO || aerror == ENOENT)
314 return 0; /* otherwise may be transient, e.g. EMFILE */
319 char *save_args[MAX_ARGS];
321 extern pthread_t main_thread;
322 childJob_t myjob = { SALVAGER_MAGIC, NOT_CHILD, "" };
326 * Get the salvage lock if not already held. Hold until process exits.
328 * @param[in] locktype READ_LOCK or WRITE_LOCK
331 _ObtainSalvageLock(int locktype)
333 struct VLockFile salvageLock;
338 VLockFileInit(&salvageLock, AFSDIR_SERVER_SLVGLOCK_FILEPATH);
340 code = VLockFileLock(&salvageLock, offset, locktype, nonblock);
343 "salvager: There appears to be another salvager running! "
348 "salvager: Error %d trying to acquire salvage lock! "
354 ObtainSalvageLock(void)
356 _ObtainSalvageLock(WRITE_LOCK);
359 ObtainSharedSalvageLock(void)
361 _ObtainSalvageLock(READ_LOCK);
365 #ifdef AFS_SGI_XFS_IOPS_ENV
366 /* Check if the given partition is mounted. For XFS, the root inode is not a
367 * constant. So we check the hard way.
370 IsPartitionMounted(char *part)
373 struct mntent *mntent;
375 opr_Verify(mntfp = setmntent(MOUNTED, "r"));
376 while (mntent = getmntent(mntfp)) {
377 if (!strcmp(part, mntent->mnt_dir))
382 return mntent ? 1 : 1;
385 /* Check if the given inode is the root of the filesystem. */
386 #ifndef AFS_SGI_XFS_IOPS_ENV
388 IsRootInode(struct afs_stat_st *status)
391 * The root inode is not a fixed value in XFS partitions. So we need to
392 * see if the partition is in the list of mounted partitions. This only
393 * affects the SalvageFileSys path, so we check there.
395 return (status->st_ino == ROOTINODE);
400 #ifndef AFS_NAMEI_ENV
401 /* We don't want to salvage big files filesystems, since we can't put volumes on
405 CheckIfBigFilesFS(char *mountPoint, char *devName)
407 struct superblock fs;
410 if (strncmp(devName, "/dev/", 5)) {
411 (void)sprintf(name, "/dev/%s", devName);
413 (void)strcpy(name, devName);
416 if (ReadSuper(&fs, name) < 0) {
417 Log("Unable to read superblock. Not salvaging partition %s.\n",
421 if (IsBigFilesFileSystem(&fs)) {
422 Log("Partition %s is a big files filesystem, not salvaging.\n",
432 #define HDSTR "\\Device\\Harddisk"
433 #define HDLEN (sizeof(HDSTR)-1) /* Length of "\Device\Harddisk" */
435 SameDisk(struct DiskPartition64 *p1, struct DiskPartition64 *p2)
441 static int dowarn = 1;
443 if (!QueryDosDevice(p1->devName, res1, RES_LEN - 1))
445 if (strncmp(res1, HDSTR, HDLEN)) {
448 Log("WARNING: QueryDosDevice is returning %s, not %s for %s\n",
449 res1, HDSTR, p1->devName);
452 if (!QueryDosDevice(p2->devName, res2, RES_LEN - 1))
454 if (strncmp(res2, HDSTR, HDLEN)) {
457 Log("WARNING: QueryDosDevice is returning %s, not %s for %s\n",
458 res2, HDSTR, p2->devName);
462 return (0 == _strnicmp(res1, res2, RES_LEN - 1));
465 #define SameDisk(P1, P2) ((P1)->device/PartsPerDisk == (P2)->device/PartsPerDisk)
468 /* This assumes that two partitions with the same device number divided by
469 * PartsPerDisk are on the same disk.
472 SalvageFileSysParallel(struct DiskPartition64 *partP)
475 struct DiskPartition64 *partP;
476 int pid; /* Pid for this job */
477 int jobnumb; /* Log file job number */
478 struct job *nextjob; /* Next partition on disk to salvage */
480 static struct job *jobs[MAXPARALLEL] = { 0 }; /* Need to zero this */
481 struct job *thisjob = 0;
482 static int numjobs = 0;
483 static int jobcount = 0;
489 char logFileName[256];
493 /* We have a partition to salvage. Copy it into thisjob */
494 thisjob = calloc(1, sizeof(struct job));
496 Log("Can't salvage '%s'. Not enough memory\n", partP->name);
499 thisjob->partP = partP;
500 thisjob->jobnumb = jobcount;
502 } else if (jobcount == 0) {
503 /* We are asking to wait for all jobs (partp == 0), yet we never
506 Log("No file system partitions named %s* found; not salvaged\n",
507 VICE_PARTITION_PREFIX);
511 if (debug || Parallel == 1) {
513 SalvageFileSys(thisjob->partP, 0);
520 /* Check to see if thisjob is for a disk that we are already
521 * salvaging. If it is, link it in as the next job to do. The
522 * jobs array has 1 entry per disk being salvages. numjobs is
523 * the total number of disks currently being salvaged. In
524 * order to keep thejobs array compact, when a disk is
525 * completed, the hightest element in the jobs array is moved
526 * down to now open slot.
528 for (j = 0; j < numjobs; j++) {
529 if (SameDisk(jobs[j]->partP, thisjob->partP)) {
530 /* On same disk, add it to this list and return */
531 thisjob->nextjob = jobs[j]->nextjob;
532 jobs[j]->nextjob = thisjob;
539 /* Loop until we start thisjob or until all existing jobs are finished */
540 while (thisjob || (!partP && (numjobs > 0))) {
541 startjob = -1; /* No new job to start */
543 if ((numjobs >= Parallel) || (!partP && (numjobs > 0))) {
544 /* Either the max jobs are running or we have to wait for all
545 * the jobs to finish. In either case, we wait for at least one
546 * job to finish. When it's done, clean up after it.
548 pid = wait(&wstatus);
549 opr_Assert(pid != -1);
550 for (j = 0; j < numjobs; j++) { /* Find which job it is */
551 if (pid == jobs[j]->pid)
554 opr_Assert(j < numjobs);
555 if (WCOREDUMP(wstatus)) { /* Say if the job core dumped */
556 Log("Salvage of %s core dumped!\n", jobs[j]->partP->name);
559 numjobs--; /* job no longer running */
560 oldjob = jobs[j]; /* remember */
561 jobs[j] = jobs[j]->nextjob; /* Step to next part on same disk */
562 free(oldjob); /* free the old job */
564 /* If there is another partition on the disk to salvage, then
565 * say we will start it (startjob). If not, then put thisjob there
566 * and say we will start it.
568 if (jobs[j]) { /* Another partitions to salvage */
569 startjob = j; /* Will start it */
570 } else { /* There is not another partition to salvage */
572 jobs[j] = thisjob; /* Add thisjob */
574 startjob = j; /* Will start it */
576 jobs[j] = jobs[numjobs]; /* Move last job up to this slot */
577 startjob = -1; /* Don't start it - already running */
581 /* We don't have to wait for a job to complete */
583 jobs[numjobs] = thisjob; /* Add this job */
585 startjob = numjobs; /* Will start it */
589 /* Start up a new salvage job on a partition in job slot "startjob" */
590 if (startjob != -1) {
592 Log("Starting salvage of file system partition %s\n",
593 jobs[startjob]->partP->name);
595 /* For NT, we not only fork, but re-exec the salvager. Pass in the
596 * commands and pass the child job number via the data path.
599 nt_SalvagePartition(jobs[startjob]->partP->name,
600 jobs[startjob]->jobnumb);
601 jobs[startjob]->pid = pid;
606 jobs[startjob]->pid = pid;
612 for (fd = 0; fd < 16; fd++)
619 openlog("salvager", LOG_PID, useSyslogFacility);
623 snprintf(logFileName, sizeof logFileName, "%s.%d",
624 AFSDIR_SERVER_SLVGLOG_FILEPATH,
625 jobs[startjob]->jobnumb);
626 logFile = afs_fopen(logFileName, "w");
631 SalvageFileSys1(jobs[startjob]->partP, 0);
636 } /* while ( thisjob || (!partP && numjobs > 0) ) */
638 /* If waited for all jobs to complete, now collect log files and return */
640 if (!useSyslog) /* if syslogging - no need to collect */
643 for (i = 0; i < jobcount; i++) {
644 snprintf(logFileName, sizeof logFileName, "%s.%d",
645 AFSDIR_SERVER_SLVGLOG_FILEPATH, i);
646 if ((passLog = afs_fopen(logFileName, "r"))) {
647 while (fgets(buf, sizeof(buf), passLog)) {
652 (void)unlink(logFileName);
661 SalvageFileSys(struct DiskPartition64 *partP, VolumeId singleVolumeNumber)
663 if (!canfork || debug || Fork() == 0) {
664 SalvageFileSys1(partP, singleVolumeNumber);
665 if (canfork && !debug) {
670 Wait("SalvageFileSys");
674 get_DevName(char *pbuffer, char *wpath)
676 char pbuf[128], *ptr;
677 strcpy(pbuf, pbuffer);
678 ptr = (char *)strrchr(pbuf, OS_DIRSEPC);
684 ptr = (char *)strrchr(pbuffer, OS_DIRSEPC);
686 strcpy(pbuffer, ptr + 1);
693 SalvageFileSys1(struct DiskPartition64 *partP, VolumeId singleVolumeNumber)
696 char inodeListPath[256];
697 FD_t inodeFile = INVALID_FD;
698 static char tmpDevName[100];
699 static char wpath[100];
700 struct VolumeSummary *vsp, *esp;
704 struct SalvInfo l_salvinfo;
705 struct SalvInfo *salvinfo = &l_salvinfo;
708 memset(salvinfo, 0, sizeof(*salvinfo));
711 if (inodeFile != INVALID_FD) {
713 inodeFile = INVALID_FD;
715 if (tries > VOL_MAX_CHECKOUT_RETRIES) {
716 Abort("Raced too many times with fileserver restarts while trying to "
717 "checkout/lock volumes; Aborted\n");
719 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
721 /* unlock all previous volume locks, since we're about to lock them
723 VLockFileReinit(&partP->volLockFile);
725 #endif /* AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL */
727 salvinfo->fileSysPartition = partP;
728 salvinfo->fileSysDevice = salvinfo->fileSysPartition->device;
729 salvinfo->fileSysPathName = VPartitionPath(salvinfo->fileSysPartition);
732 /* Opendir can fail on "C:" but not on "C:\" if C is empty! */
733 (void)sprintf(salvinfo->fileSysPath, "%s" OS_DIRSEP, salvinfo->fileSysPathName);
734 name = partP->devName;
736 strlcpy(salvinfo->fileSysPath, salvinfo->fileSysPathName, sizeof(salvinfo->fileSysPath));
737 strcpy(tmpDevName, partP->devName);
738 name = get_DevName(tmpDevName, wpath);
739 salvinfo->fileSysDeviceName = name;
740 salvinfo->filesysfulldev = wpath;
743 if (singleVolumeNumber) {
744 #if !(defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL))
745 /* only non-DAFS locks the partition when salvaging a single volume;
746 * DAFS will lock the individual volumes in the VG */
747 VLockPartition(partP->name);
748 #endif /* !(AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL) */
752 /* salvageserver already setup fssync conn for us */
753 if ((programType != salvageServer) && !VConnectFS()) {
754 Abort("Couldn't connect to file server\n");
757 salvinfo->useFSYNC = 1;
758 AskOffline(salvinfo, singleVolumeNumber);
759 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
760 if (LockVolume(salvinfo, singleVolumeNumber)) {
763 #endif /* AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL */
766 salvinfo->useFSYNC = 0;
767 VLockPartition(partP->name);
771 ForceSalvage = UseTheForceLuke(salvinfo->fileSysPath);
774 Log("SALVAGING FILE SYSTEM PARTITION %s (device=%s%s)\n",
775 partP->name, name, (Testing ? "(READONLY mode)" : ""));
777 Log("***Forced salvage of all volumes on this partition***\n");
782 * Remove any leftover /vicepa/salvage.inodes.* or /vicepa/salvage.temp.*
789 opr_Verify((dirp = opendir(salvinfo->fileSysPath)) != NULL);
790 while ((dp = readdir(dirp))) {
791 if (!strncmp(dp->d_name, "salvage.inodes.", 15)
792 || !strncmp(dp->d_name, "salvage.temp.", 13)) {
794 Log("Removing old salvager temp files %s\n", dp->d_name);
795 strcpy(npath, salvinfo->fileSysPath);
796 strcat(npath, OS_DIRSEP);
797 strcat(npath, dp->d_name);
803 tdir = (tmpdir ? tmpdir : salvinfo->fileSysPath);
805 (void)_putenv("TMP="); /* If "TMP" is set, then that overrides tdir. */
806 (void)strncpy(inodeListPath, _tempnam(tdir, "salvage.inodes."), 255);
808 snprintf(inodeListPath, 255, "%s" OS_DIRSEP "salvage.inodes.%s.%d", tdir, name,
812 inodeFile = OS_OPEN(inodeListPath, O_RDWR|O_TRUNC|O_CREAT, 0666);
813 if (inodeFile == INVALID_FD) {
814 Abort("Error %d when creating inode description file %s; not salvaged\n", errno, inodeListPath);
817 /* Using nt_unlink here since we're really using the delete on close
818 * semantics of unlink. In most places in the salvager, we really do
819 * mean to unlink the file at that point. Those places have been
820 * modified to actually do that so that the NT crt can be used there.
822 * jaltman - On NT delete on close cannot be applied to a file while the
823 * process has an open file handle that does not have DELETE file
824 * access and FILE_SHARE_DELETE. fopen() calls CreateFile() without
825 * delete privileges. As a result the nt_unlink() call will always
828 code = nt_unlink(inodeListPath);
830 code = unlink(inodeListPath);
833 Log("Error %d when trying to unlink %s\n", errno, inodeListPath);
836 if (GetInodeSummary(salvinfo, inodeFile, singleVolumeNumber) < 0) {
840 salvinfo->inodeFd = inodeFile;
841 if (salvinfo->inodeFd == INVALID_FD)
842 Abort("Temporary file %s is missing...\n", inodeListPath);
843 OS_SEEK(salvinfo->inodeFd, 0L, SEEK_SET);
844 if (ListInodeOption) {
845 PrintInodeList(salvinfo);
846 if (singleVolumeNumber) {
847 /* We've checked out the volume from the fileserver, and we need
848 * to give it back. We don't know if the volume exists or not,
849 * so we don't know whether to AskOnline or not. Try to determine
850 * if the volume exists by trying to read the volume header, and
851 * AskOnline if it is readable. */
852 MaybeAskOnline(salvinfo, singleVolumeNumber);
856 /* enumerate volumes in the partition.
857 * figure out sets of read-only + rw volumes.
858 * salvage each set, read-only volumes first, then read-write.
859 * Fix up inodes on last volume in set (whether it is read-write
862 if (GetVolumeSummary(salvinfo, singleVolumeNumber)) {
866 if (singleVolumeNumber) {
867 /* If we delete a volume during the salvage, we indicate as such by
868 * setting the volsummary->deleted field. We need to know if we
869 * deleted a volume or not in order to know which volumes to bring
870 * back online after the salvage. If we fork, we will lose this
871 * information, since volsummary->deleted will not get set in the
872 * parent. So, don't fork. */
876 for (i = j = 0, vsp = salvinfo->volumeSummaryp, esp = vsp + salvinfo->nVolumes;
877 i < salvinfo->nVolumesInInodeFile; i = j) {
878 VolumeId rwvid = salvinfo->inodeSummary[i].RWvolumeId;
880 j < salvinfo->nVolumesInInodeFile && salvinfo->inodeSummary[j].RWvolumeId == rwvid;
882 VolumeId vid = salvinfo->inodeSummary[j].volumeId;
883 struct VolumeSummary *tsp;
884 /* Scan volume list (from partition root directory) looking for the
885 * current rw volume number in the volume list from the inode scan.
886 * If there is one here that is not in the inode volume list,
888 for (; vsp < esp && (vsp->header.parent < rwvid); vsp++) {
890 DeleteExtraVolumeHeaderFile(salvinfo, vsp);
892 /* Now match up the volume summary info from the root directory with the
893 * entry in the volume list obtained from scanning inodes */
894 salvinfo->inodeSummary[j].volSummary = NULL;
895 for (tsp = vsp; tsp < esp && (tsp->header.parent == rwvid); tsp++) {
896 if (tsp->header.id == vid) {
897 salvinfo->inodeSummary[j].volSummary = tsp;
903 /* Salvage the group of volumes (several read-only + 1 read/write)
904 * starting with the current read-only volume we're looking at.
907 nt_SalvageVolumeGroup(salvinfo, &salvinfo->inodeSummary[i], j - i);
909 DoSalvageVolumeGroup(salvinfo, &salvinfo->inodeSummary[i], j - i);
910 #endif /* AFS_NT40_ENV */
914 /* Delete any additional volumes that were listed in the partition but which didn't have any corresponding inodes */
915 for (; vsp < esp; vsp++) {
917 DeleteExtraVolumeHeaderFile(salvinfo, vsp);
920 if (!singleVolumeNumber) /* Remove the FORCESALVAGE file */
921 RemoveTheForce(salvinfo->fileSysPath);
923 if (!Testing && singleVolumeNumber) {
925 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
926 /* unlock vol headers so the fs can attach them when we AskOnline */
927 VLockFileReinit(&salvinfo->fileSysPartition->volLockFile);
928 #endif /* AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL */
930 /* Step through the volumeSummary list and set all volumes on-line.
931 * Most volumes were taken off-line in GetVolumeSummary.
932 * If a volume was deleted, don't tell the fileserver anything, since
933 * we already told the fileserver the volume was deleted back when we
934 * we destroyed the volume header.
935 * Also, make sure we bring the singleVolumeNumber back online first.
938 for (j = 0; j < salvinfo->nVolumes; j++) {
939 if (salvinfo->volumeSummaryp[j].header.id == singleVolumeNumber) {
941 if (!salvinfo->volumeSummaryp[j].deleted) {
942 AskOnline(salvinfo, singleVolumeNumber);
948 /* If singleVolumeNumber is not in our volumeSummary, it means that
949 * at least one other volume in the VG is on the partition, but the
950 * RW volume is not. We've already AskOffline'd it by now, though,
951 * so make sure we don't still have the volume checked out. */
952 AskDelete(salvinfo, singleVolumeNumber);
955 for (j = 0; j < salvinfo->nVolumes; j++) {
956 if (salvinfo->volumeSummaryp[j].header.id != singleVolumeNumber) {
957 if (!salvinfo->volumeSummaryp[j].deleted) {
958 AskOnline(salvinfo, salvinfo->volumeSummaryp[j].header.id);
964 Log("SALVAGING OF PARTITION %s%s COMPLETED\n",
965 salvinfo->fileSysPartition->name, (Testing ? " (READONLY mode)" : ""));
968 OS_CLOSE(inodeFile); /* SalvageVolumeGroup was the last which needed it. */
972 DeleteExtraVolumeHeaderFile(struct SalvInfo *salvinfo, struct VolumeSummary *vsp)
975 char filename[VMAXPATHLEN];
981 VolumeExternalName_r(vsp->header.id, filename, sizeof(filename));
982 sprintf(path, "%s" OS_DIRSEP "%s", salvinfo->fileSysPath, filename);
985 Log("The volume header file %s is not associated with any actual data (%sdeleted)\n", path, (Testing ? "would have been " : ""));
988 code = VDestroyVolumeDiskHeader(salvinfo->fileSysPartition, vsp->header.id, vsp->header.parent);
990 Log("Error %ld destroying volume disk header for volume %" AFS_VOLID_FMT "\n",
991 afs_printable_int32_ld(code),
992 afs_printable_VolumeId_lu(vsp->header.id));
995 /* make sure we actually delete the header file; ENOENT
996 * is fine, since VDestroyVolumeDiskHeader probably already
998 if (unlink(path) && errno != ENOENT) {
999 Log("Unable to unlink %s (errno = %d)\n", path, errno);
1001 if (salvinfo->useFSYNC) {
1002 AskDelete(salvinfo, vsp->header.id);
1009 CompareInodes(const void *_p1, const void *_p2)
1011 const struct ViceInodeInfo *p1 = _p1;
1012 const struct ViceInodeInfo *p2 = _p2;
1013 if (p1->u.vnode.vnodeNumber == INODESPECIAL
1014 || p2->u.vnode.vnodeNumber == INODESPECIAL) {
1015 VolumeId p1rwid, p2rwid;
1017 (p1->u.vnode.vnodeNumber ==
1018 INODESPECIAL ? p1->u.special.parentId : p1->u.vnode.volumeId);
1020 (p2->u.vnode.vnodeNumber ==
1021 INODESPECIAL ? p2->u.special.parentId : p2->u.vnode.volumeId);
1022 if (p1rwid < p2rwid)
1024 if (p1rwid > p2rwid)
1026 if (p1->u.vnode.vnodeNumber == INODESPECIAL
1027 && p2->u.vnode.vnodeNumber == INODESPECIAL) {
1028 if (p1->u.vnode.volumeId == p2->u.vnode.volumeId)
1029 return (p1->u.special.type < p2->u.special.type ? -1 : 1);
1030 if (p1->u.vnode.volumeId == p1rwid)
1032 if (p2->u.vnode.volumeId == p2rwid)
1034 return (p1->u.vnode.volumeId < p2->u.vnode.volumeId ? -1 : 1);
1036 if (p1->u.vnode.vnodeNumber != INODESPECIAL)
1037 return (p2->u.vnode.volumeId == p2rwid ? 1 : -1);
1038 return (p1->u.vnode.volumeId == p1rwid ? -1 : 1);
1040 if (p1->u.vnode.volumeId < p2->u.vnode.volumeId)
1042 if (p1->u.vnode.volumeId > p2->u.vnode.volumeId)
1044 if (p1->u.vnode.vnodeNumber < p2->u.vnode.vnodeNumber)
1046 if (p1->u.vnode.vnodeNumber > p2->u.vnode.vnodeNumber)
1048 /* The following tests are reversed, so that the most desirable
1049 * of several similar inodes comes first */
1050 if (p1->u.vnode.vnodeUniquifier > p2->u.vnode.vnodeUniquifier) {
1051 #ifdef AFS_3DISPARES
1052 if (p1->u.vnode.vnodeUniquifier > 3775414 /* 90% of 4.2M */ &&
1053 p2->u.vnode.vnodeUniquifier < 419490 /* 10% of 4.2M */ )
1056 #ifdef AFS_SGI_EXMAG
1057 if (p1->u.vnode.vnodeUniquifier > 15099494 /* 90% of 16M */ &&
1058 p2->u.vnode.vnodeUniquifier < 1677721 /* 10% of 16M */ )
1063 if (p1->u.vnode.vnodeUniquifier < p2->u.vnode.vnodeUniquifier) {
1064 #ifdef AFS_3DISPARES
1065 if (p2->u.vnode.vnodeUniquifier > 3775414 /* 90% of 4.2M */ &&
1066 p1->u.vnode.vnodeUniquifier < 419490 /* 10% of 4.2M */ )
1069 #ifdef AFS_SGI_EXMAG
1070 if (p2->u.vnode.vnodeUniquifier > 15099494 /* 90% of 16M */ &&
1071 p1->u.vnode.vnodeUniquifier < 1677721 /* 10% of 16M */ )
1076 if (p1->u.vnode.inodeDataVersion > p2->u.vnode.inodeDataVersion) {
1077 #ifdef AFS_3DISPARES
1078 if (p1->u.vnode.inodeDataVersion > 1887437 /* 90% of 2.1M */ &&
1079 p2->u.vnode.inodeDataVersion < 209716 /* 10% of 2.1M */ )
1082 #ifdef AFS_SGI_EXMAG
1083 if (p1->u.vnode.inodeDataVersion > 15099494 /* 90% of 16M */ &&
1084 p2->u.vnode.inodeDataVersion < 1677721 /* 10% of 16M */ )
1089 if (p1->u.vnode.inodeDataVersion < p2->u.vnode.inodeDataVersion) {
1090 #ifdef AFS_3DISPARES
1091 if (p2->u.vnode.inodeDataVersion > 1887437 /* 90% of 2.1M */ &&
1092 p1->u.vnode.inodeDataVersion < 209716 /* 10% of 2.1M */ )
1095 #ifdef AFS_SGI_EXMAG
1096 if (p2->u.vnode.inodeDataVersion > 15099494 /* 90% of 16M */ &&
1097 p1->u.vnode.inodeDataVersion < 1677721 /* 10% of 16M */ )
1106 CountVolumeInodes(struct ViceInodeInfo *ip, int maxInodes,
1107 struct InodeSummary *summary)
1109 VolumeId volume = ip->u.vnode.volumeId;
1110 VolumeId rwvolume = volume;
1115 while (maxInodes-- && volume == ip->u.vnode.volumeId) {
1117 if (ip->u.vnode.vnodeNumber == INODESPECIAL) {
1119 rwvolume = ip->u.special.parentId;
1120 /* This isn't quite right, as there could (in error) be different
1121 * parent inodes in different special vnodes */
1123 if (maxunique < ip->u.vnode.vnodeUniquifier)
1124 maxunique = ip->u.vnode.vnodeUniquifier;
1128 summary->volumeId = volume;
1129 summary->RWvolumeId = rwvolume;
1130 summary->nInodes = n;
1131 summary->nSpecialInodes = nSpecial;
1132 summary->maxUniquifier = maxunique;
1136 OnlyOneVolume(struct ViceInodeInfo *inodeinfo, VolumeId singleVolumeNumber, void *rock)
1138 if (inodeinfo->u.vnode.vnodeNumber == INODESPECIAL)
1139 return (inodeinfo->u.special.parentId == singleVolumeNumber);
1140 return (inodeinfo->u.vnode.volumeId == singleVolumeNumber);
1145 * Collect list of inodes in file named by path. If a truly fatal error,
1146 * unlink the file and abort. For lessor errors, return -1. The file will
1147 * be unlinked by the caller.
1150 GetInodeSummary(struct SalvInfo *salvinfo, FD_t inodeFile, VolumeId singleVolumeNumber)
1154 struct ViceInodeInfo *ip, *ip_save;
1155 struct InodeSummary summary;
1156 char summaryFileName[50];
1157 FD_t summaryFile = INVALID_FD;
1159 char *dev = salvinfo->fileSysPath;
1160 char *wpath = salvinfo->fileSysPath;
1162 char *dev = salvinfo->fileSysDeviceName;
1163 char *wpath = salvinfo->filesysfulldev;
1165 char *part = salvinfo->fileSysPath;
1170 afs_sfsize_t st_size;
1172 /* This file used to come from vfsck; cobble it up ourselves now... */
1174 ListViceInodes(dev, salvinfo->fileSysPath, inodeFile,
1175 singleVolumeNumber ? OnlyOneVolume : 0,
1176 singleVolumeNumber, &forceSal, forceR, wpath, NULL)) < 0) {
1178 Log("*** I/O error %d when writing a tmp inode file; Not salvaged %s ***\nIncrease space on partition or use '-tmpdir'\n", errno, dev);
1182 Abort("Unable to get inodes for \"%s\"; not salvaged\n", dev);
1184 if (forceSal && !ForceSalvage) {
1185 Log("***Forced salvage of all volumes on this partition***\n");
1188 OS_SEEK(inodeFile, 0L, SEEK_SET);
1189 salvinfo->inodeFd = inodeFile;
1190 if (salvinfo->inodeFd == INVALID_FD ||
1191 (st_size = OS_SIZE(salvinfo->inodeFd)) == -1) {
1192 Abort("No inode description file for \"%s\"; not salvaged\n", dev);
1194 tdir = (tmpdir ? tmpdir : part);
1196 (void)_putenv("TMP="); /* If "TMP" is set, then that overrides tdir. */
1197 (void)strcpy(summaryFileName, _tempnam(tdir, "salvage.temp."));
1199 snprintf(summaryFileName, sizeof summaryFileName,
1200 "%s" OS_DIRSEP "salvage.temp.%d", tdir, getpid());
1202 summaryFile = OS_OPEN(summaryFileName, O_RDWR|O_APPEND|O_CREAT, 0666);
1203 if (summaryFile == INVALID_FD) {
1204 Abort("Unable to create inode summary file\n");
1208 /* Using nt_unlink here since we're really using the delete on close
1209 * semantics of unlink. In most places in the salvager, we really do
1210 * mean to unlink the file at that point. Those places have been
1211 * modified to actually do that so that the NT crt can be used there.
1213 * jaltman - As commented elsewhere, this cannot work because fopen()
1214 * does not open files with DELETE and FILE_SHARE_DELETE.
1216 code = nt_unlink(summaryFileName);
1218 code = unlink(summaryFileName);
1221 Log("Error %d when trying to unlink %s\n", errno, summaryFileName);
1224 if (!canfork || debug || Fork() == 0) {
1225 int nInodes = st_size / sizeof(struct ViceInodeInfo);
1227 OS_CLOSE(summaryFile);
1228 if (!singleVolumeNumber) /* Remove the FORCESALVAGE file */
1229 RemoveTheForce(salvinfo->fileSysPath);
1231 struct VolumeSummary *vsp;
1235 GetVolumeSummary(salvinfo, singleVolumeNumber);
1237 for (i = 0, vsp = salvinfo->volumeSummaryp; i < salvinfo->nVolumes; i++) {
1239 if (vsp->header.id == singleVolumeNumber) {
1242 DeleteExtraVolumeHeaderFile(salvinfo, vsp);
1248 MaybeAskOnline(salvinfo, singleVolumeNumber);
1250 /* make sure we get rid of stray .vol headers, even if
1251 * they're not in our volume summary (might happen if
1252 * e.g. something else created them and they're not in the
1253 * fileserver VGC) */
1254 VDestroyVolumeDiskHeader(salvinfo->fileSysPartition,
1255 singleVolumeNumber, 0 /*parent*/);
1256 AskDelete(salvinfo, singleVolumeNumber);
1260 Log("%s vice inodes on %s; not salvaged\n",
1261 singleVolumeNumber ? "No applicable" : "No", dev);
1266 ip = malloc(nInodes*sizeof(struct ViceInodeInfo));
1268 OS_CLOSE(summaryFile);
1270 ("Unable to allocate enough space to read inode table; %s not salvaged\n",
1273 if (OS_READ(salvinfo->inodeFd, ip, st_size) != st_size) {
1274 OS_CLOSE(summaryFile);
1275 Abort("Unable to read inode table; %s not salvaged\n", dev);
1277 qsort(ip, nInodes, sizeof(struct ViceInodeInfo), CompareInodes);
1278 if (OS_SEEK(salvinfo->inodeFd, 0, SEEK_SET) == -1
1279 || OS_WRITE(salvinfo->inodeFd, ip, st_size) != st_size) {
1280 OS_CLOSE(summaryFile);
1281 Abort("Unable to rewrite inode table; %s not salvaged\n", dev);
1286 CountVolumeInodes(ip, nInodes, &summary);
1287 if (OS_WRITE(summaryFile, &summary, sizeof(summary)) != sizeof(summary)) {
1288 Log("Difficulty writing summary file (errno = %d); %s not salvaged\n", errno, dev);
1289 OS_CLOSE(summaryFile);
1293 summary.index += (summary.nInodes);
1294 nInodes -= summary.nInodes;
1295 ip += summary.nInodes;
1298 ip = ip_save = NULL;
1299 /* Following fflush is not fclose, because if it was debug mode would not work */
1300 if (OS_SYNC(summaryFile) == -1) {
1301 Log("Unable to write summary file (errno = %d); %s not salvaged\n", errno, dev);
1302 OS_CLOSE(summaryFile);
1306 if (canfork && !debug) {
1311 if (Wait("Inode summary") == -1) {
1312 OS_CLOSE(summaryFile);
1313 Exit(1); /* salvage of this partition aborted */
1317 st_size = OS_SIZE(summaryFile);
1318 opr_Assert(st_size >= 0);
1321 salvinfo->inodeSummary = malloc(st_size);
1322 opr_Assert(salvinfo->inodeSummary != NULL);
1323 /* For GNU we need to do lseek to get the file pointer moved. */
1324 opr_Assert(OS_SEEK(summaryFile, 0, SEEK_SET) == 0);
1325 ret = OS_READ(summaryFile, salvinfo->inodeSummary, st_size);
1326 opr_Assert(ret == st_size);
1328 salvinfo->nVolumesInInodeFile = st_size / sizeof(struct InodeSummary);
1329 for (i = 0; i < salvinfo->nVolumesInInodeFile; i++) {
1330 salvinfo->inodeSummary[i].volSummary = NULL;
1332 Log("%d nVolumesInInodeFile %lu \n",salvinfo->nVolumesInInodeFile,(unsigned long)st_size);
1333 OS_CLOSE(summaryFile);
1336 if (retcode && singleVolumeNumber && !deleted) {
1337 AskError(salvinfo, singleVolumeNumber);
1343 /* Comparison routine for volume sort.
1344 This is setup so that a read-write volume comes immediately before
1345 any read-only clones of that volume */
1347 CompareVolumes(const void *_p1, const void *_p2)
1349 const struct VolumeSummary *p1 = _p1;
1350 const struct VolumeSummary *p2 = _p2;
1351 if (p1->header.parent != p2->header.parent)
1352 return p1->header.parent < p2->header.parent ? -1 : 1;
1353 if (p1->header.id == p1->header.parent) /* p1 is rw volume */
1355 if (p2->header.id == p2->header.parent) /* p2 is rw volume */
1357 return p1->header.id < p2->header.id ? -1 : 1; /* Both read-only */
1361 * Gleans volumeSummary information by asking the fileserver
1363 * @param[in] singleVolumeNumber the volume we're salvaging. 0 if we're
1364 * salvaging a whole partition
1366 * @return whether we obtained the volume summary information or not
1367 * @retval 0 success; we obtained the volume summary information
1368 * @retval -1 we raced with a fileserver restart; volume locks and checkout
1370 * @retval 1 we did not get the volume summary information; either the
1371 * fileserver responded with an error, or we are not supposed to
1372 * ask the fileserver for the information (e.g. we are salvaging
1373 * the entire partition or we are not the salvageserver)
1375 * @note for non-DAFS, always returns 1
1378 AskVolumeSummary(struct SalvInfo *salvinfo, VolumeId singleVolumeNumber)
1381 #if defined(FSSYNC_BUILD_CLIENT) && defined(AFS_DEMAND_ATTACH_FS)
1382 if (programType == salvageServer) {
1383 if (singleVolumeNumber) {
1384 FSSYNC_VGQry_response_t q_res;
1386 struct VolumeSummary *vsp;
1388 struct VolumeDiskHeader diskHdr;
1390 memset(&res, 0, sizeof(res));
1392 code = FSYNC_VGCQuery(salvinfo->fileSysPartition->name, singleVolumeNumber, &q_res, &res);
1395 * We must wait for the partition to finish scanning before
1396 * can continue, since we will not know if we got the entire
1397 * VG membership unless the partition is fully scanned.
1398 * We could, in theory, just scan the partition ourselves if
1399 * the VG cache is not ready, but we would be doing the exact
1400 * same scan the fileserver is doing; it will almost always
1401 * be faster to wait for the fileserver. The only exceptions
1402 * are if the partition does not take very long to scan, and
1403 * in that case it's fast either way, so who cares?
1405 if (code == SYNC_FAILED && res.hdr.reason == FSYNC_PART_SCANNING) {
1406 Log("waiting for fileserver to finish scanning partition %s...\n",
1407 salvinfo->fileSysPartition->name);
1409 for (i = 1; code == SYNC_FAILED && res.hdr.reason == FSYNC_PART_SCANNING; i++) {
1410 /* linearly ramp up from 1 to 10 seconds; nothing fancy,
1411 * just so small partitions don't need to wait over 10
1412 * seconds every time, and large partitions are generally
1413 * polled only once every ten seconds. */
1414 sleep((i > 10) ? (i = 10) : i);
1416 code = FSYNC_VGCQuery(salvinfo->fileSysPartition->name, singleVolumeNumber, &q_res, &res);
1420 if (code == SYNC_FAILED && res.hdr.reason == FSYNC_UNKNOWN_VOLID) {
1421 /* This can happen if there's no header for the volume
1422 * we're salvaging, or no headers exist for the VG (if
1423 * we're salvaging an RW). Act as if we got a response
1424 * with no VG members. The headers may be created during
1425 * salvaging, if there are inodes in this VG. */
1427 memset(&q_res, 0, sizeof(q_res));
1428 q_res.rw = singleVolumeNumber;
1432 Log("fileserver refused VGCQuery request for volume %" AFS_VOLID_FMT " on "
1433 "partition %s, code %ld reason %ld\n",
1434 afs_printable_VolumeId_lu(singleVolumeNumber),
1435 salvinfo->fileSysPartition->name,
1436 afs_printable_int32_ld(code),
1437 afs_printable_int32_ld(res.hdr.reason));
1441 if (q_res.rw != singleVolumeNumber) {
1442 Log("fileserver requested salvage of clone %" AFS_VOLID_FMT "; scheduling salvage of volume group %" AFS_VOLID_FMT "...\n",
1443 afs_printable_VolumeId_lu(singleVolumeNumber),
1444 afs_printable_VolumeId_lu(q_res.rw));
1445 #ifdef SALVSYNC_BUILD_CLIENT
1446 if (SALVSYNC_LinkVolume(q_res.rw,
1448 salvinfo->fileSysPartition->name,
1450 Log("schedule request failed\n");
1452 #endif /* SALVSYNC_BUILD_CLIENT */
1453 Exit(SALSRV_EXIT_VOLGROUP_LINK);
1456 salvinfo->volumeSummaryp = calloc(VOL_VG_MAX_VOLS, sizeof(struct VolumeSummary));
1457 opr_Assert(salvinfo->volumeSummaryp != NULL);
1459 salvinfo->nVolumes = 0;
1460 vsp = salvinfo->volumeSummaryp;
1462 for (i = 0; i < VOL_VG_MAX_VOLS; i++) {
1463 char name[VMAXPATHLEN];
1465 if (!q_res.children[i]) {
1469 /* AskOffline for singleVolumeNumber was called much earlier */
1470 if (q_res.children[i] != singleVolumeNumber) {
1471 AskOffline(salvinfo, q_res.children[i]);
1472 if (LockVolume(salvinfo, q_res.children[i])) {
1478 code = VReadVolumeDiskHeader(q_res.children[i], salvinfo->fileSysPartition, &diskHdr);
1480 Log("Cannot read header for %lu; trying to salvage group anyway\n",
1481 afs_printable_uint32_lu(q_res.children[i]));
1486 DiskToVolumeHeader(&vsp->header, &diskHdr);
1487 VolumeExternalName_r(q_res.children[i], name, sizeof(name));
1489 salvinfo->nVolumes++;
1493 qsort(salvinfo->volumeSummaryp, salvinfo->nVolumes, sizeof(struct VolumeSummary),
1498 Log("Cannot get volume summary from fileserver; falling back to scanning "
1499 "entire partition\n");
1502 #endif /* FSSYNC_BUILD_CLIENT && AFS_DEMAND_ATTACH_FS */
1507 * count how many volume headers are found by VWalkVolumeHeaders.
1509 * @param[in] dp the disk partition (unused)
1510 * @param[in] name full path to the .vol header (unused)
1511 * @param[in] hdr the header data (unused)
1512 * @param[in] last whether this is the last try or not (unused)
1513 * @param[in] rock actually an afs_int32*; the running count of how many
1514 * volumes we have found
1519 CountHeader(struct DiskPartition64 *dp, const char *name,
1520 struct VolumeDiskHeader *hdr, int last, void *rock)
1522 afs_int32 *nvols = (afs_int32 *)rock;
1528 * parameters to pass to the VWalkVolumeHeaders callbacks when recording volume
1531 struct SalvageScanParams {
1532 VolumeId singleVolumeNumber; /**< 0 for a partition-salvage, otherwise the
1533 * vol id of the VG we're salvaging */
1534 struct VolumeSummary *vsp; /**< ptr to the current volume summary object
1535 * we're filling in */
1536 afs_int32 nVolumes; /**< # of vols we've encountered */
1537 afs_int32 totalVolumes; /**< max # of vols we should encounter (the
1538 * # of vols we've alloc'd memory for) */
1539 int retry; /**< do we need to retry vol lock/checkout? */
1540 struct SalvInfo *salvinfo; /**< salvage job info */
1544 * records volume summary info found from VWalkVolumeHeaders.
1546 * Found volumes are also taken offline if they are in the specific volume
1547 * group we are looking for.
1549 * @param[in] dp the disk partition
1550 * @param[in] name full path to the .vol header
1551 * @param[in] hdr the header data
1552 * @param[in] last 1 if this is the last try to read the header, 0 otherwise
1553 * @param[in] rock actually a struct SalvageScanParams*, containing the
1554 * information needed to record the volume summary data
1556 * @return operation status
1558 * @retval -1 volume locking raced with fileserver restart; checking out
1559 * and locking volumes needs to be retried
1560 * @retval 1 volume header is mis-named and should be deleted
1563 RecordHeader(struct DiskPartition64 *dp, const char *name,
1564 struct VolumeDiskHeader *hdr, int last, void *rock)
1566 char nameShouldBe[64];
1567 struct SalvageScanParams *params;
1568 struct VolumeSummary summary;
1569 VolumeId singleVolumeNumber;
1570 struct SalvInfo *salvinfo;
1572 params = (struct SalvageScanParams *)rock;
1574 memset(&summary, 0, sizeof(summary));
1576 singleVolumeNumber = params->singleVolumeNumber;
1577 salvinfo = params->salvinfo;
1579 DiskToVolumeHeader(&summary.header, hdr);
1581 if (singleVolumeNumber && summary.header.id == singleVolumeNumber
1582 && summary.header.parent != singleVolumeNumber) {
1584 if (programType == salvageServer) {
1585 #ifdef SALVSYNC_BUILD_CLIENT
1586 Log("fileserver requested salvage of clone %" AFS_VOLID_FMT "; scheduling salvage of volume group %" AFS_VOLID_FMT "...\n",
1587 afs_printable_VolumeId_lu(summary.header.id),
1588 afs_printable_VolumeId_lu(summary.header.parent));
1589 if (SALVSYNC_LinkVolume(summary.header.parent,
1593 Log("schedule request failed\n");
1596 Exit(SALSRV_EXIT_VOLGROUP_LINK);
1599 Log("%" AFS_VOLID_FMT " is a read-only volume; not salvaged\n",
1600 afs_printable_VolumeId_lu(singleVolumeNumber));
1605 if (!singleVolumeNumber || summary.header.id == singleVolumeNumber
1606 || summary.header.parent == singleVolumeNumber) {
1608 /* check if the header file is incorrectly named */
1610 const char *base = strrchr(name, OS_DIRSEPC);
1617 snprintf(nameShouldBe, sizeof nameShouldBe,
1618 VFORMAT, afs_printable_VolumeId_lu(summary.header.id));
1621 if (strcmp(nameShouldBe, base)) {
1622 /* .vol file has wrong name; retry/delete */
1626 if (!badname || last) {
1627 /* only offline the volume if the header is good, or if this is
1628 * the last try looking at it; avoid AskOffline'ing the same vol
1631 if (singleVolumeNumber
1632 && summary.header.id != singleVolumeNumber) {
1633 /* don't offline singleVolumeNumber; we already did that
1636 AskOffline(salvinfo, summary.header.id);
1638 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
1640 /* don't lock the volume if the header is bad, since we're
1641 * about to delete it anyway. */
1642 if (LockVolume(salvinfo, summary.header.id)) {
1647 #endif /* AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL */
1651 if (last && !Showmode) {
1652 Log("Volume header file %s is incorrectly named (should be %s "
1653 "not %s); %sdeleted (it will be recreated later, if "
1654 "necessary)\n", name, nameShouldBe, base,
1655 (Testing ? "it would have been " : ""));
1663 if (params->nVolumes > params->totalVolumes) {
1664 /* We found more volumes than we found on the first partition walk;
1665 * apparently something created a volume while we were
1666 * partition-salvaging, or we found more than 20 vols when salvaging a
1667 * particular volume. Abort if we detect this, since other programs
1668 * supposed to not touch the partition while it is partition-salvaging,
1669 * and we shouldn't find more than 20 vols in a VG.
1671 Abort("Found %ld vol headers, but should have found at most %ld! "
1672 "Make sure the volserver/fileserver are not running at the "
1673 "same time as a partition salvage\n",
1674 afs_printable_int32_ld(params->nVolumes),
1675 afs_printable_int32_ld(params->totalVolumes));
1678 memcpy(params->vsp, &summary, sizeof(summary));
1686 * possibly unlinks bad volume headers found from VWalkVolumeHeaders.
1688 * If the header could not be read in at all, the header is always unlinked.
1689 * If instead RecordHeader said the header was bad (that is, the header file
1690 * is mis-named), we only unlink if we are doing a partition salvage, as
1691 * opposed to salvaging a specific volume group.
1693 * @param[in] dp the disk partition
1694 * @param[in] name full path to the .vol header
1695 * @param[in] hdr header data, or NULL if the header could not be read
1696 * @param[in] rock actually a struct SalvageScanParams*, with some information
1700 UnlinkHeader(struct DiskPartition64 *dp, const char *name,
1701 struct VolumeDiskHeader *hdr, void *rock)
1703 struct SalvageScanParams *params;
1706 params = (struct SalvageScanParams *)rock;
1709 /* no header; header is too bogus to read in at all */
1711 Log("%s is not a legitimate volume header file; %sdeleted\n", name, (Testing ? "it would have been " : ""));
1717 } else if (!params->singleVolumeNumber) {
1718 /* We were able to read in a header, but RecordHeader said something
1719 * was wrong with it. We only unlink those if we are doing a partition
1726 if (dounlink && unlink(name)) {
1727 Log("Error %d while trying to unlink %s\n", errno, name);
1732 * Populates salvinfo->volumeSummaryp with volume summary information, either by asking
1733 * the fileserver for VG information, or by scanning the /vicepX partition.
1735 * @param[in] singleVolumeNumber the volume ID of the single volume group we
1736 * are salvaging, or 0 if this is a partition
1739 * @return operation status
1741 * @retval -1 we raced with a fileserver restart; checking out and locking
1742 * volumes must be retried
1745 GetVolumeSummary(struct SalvInfo *salvinfo, VolumeId singleVolumeNumber)
1747 afs_int32 nvols = 0;
1748 struct SalvageScanParams params;
1751 code = AskVolumeSummary(salvinfo, singleVolumeNumber);
1753 /* we successfully got the vol information from the fileserver; no
1754 * need to scan the partition */
1758 /* we need to retry volume checkout */
1762 if (!singleVolumeNumber) {
1763 /* Count how many volumes we have in /vicepX */
1764 code = VWalkVolumeHeaders(salvinfo->fileSysPartition, salvinfo->fileSysPath, CountHeader,
1767 Abort("Can't read directory %s; not salvaged\n", salvinfo->fileSysPath);
1772 nvols = VOL_VG_MAX_VOLS;
1775 salvinfo->volumeSummaryp = calloc(nvols, sizeof(struct VolumeSummary));
1776 opr_Assert(salvinfo->volumeSummaryp != NULL);
1778 params.singleVolumeNumber = singleVolumeNumber;
1779 params.vsp = salvinfo->volumeSummaryp;
1780 params.nVolumes = 0;
1781 params.totalVolumes = nvols;
1783 params.salvinfo = salvinfo;
1785 /* walk the partition directory of volume headers and record the info
1786 * about them; unlinking invalid headers */
1787 code = VWalkVolumeHeaders(salvinfo->fileSysPartition, salvinfo->fileSysPath, RecordHeader,
1788 UnlinkHeader, ¶ms);
1790 /* we apparently need to retry checking-out/locking volumes */
1794 Abort("Failed to get volume header summary\n");
1796 salvinfo->nVolumes = params.nVolumes;
1798 qsort(salvinfo->volumeSummaryp, salvinfo->nVolumes, sizeof(struct VolumeSummary),
1804 /* Find the link table. This should be associated with the RW volume or, if
1805 * a RO only site, then the RO volume. For now, be cautious and hunt carefully.
1808 FindLinkHandle(struct InodeSummary *isp, int nVols,
1809 struct ViceInodeInfo *allInodes)
1812 struct ViceInodeInfo *ip;
1814 for (i = 0; i < nVols; i++) {
1815 ip = allInodes + isp[i].index;
1816 for (j = 0; j < isp[i].nSpecialInodes; j++) {
1817 if (ip[j].u.special.type == VI_LINKTABLE)
1818 return ip[j].inodeNumber;
1825 CreateLinkTable(struct SalvInfo *salvinfo, struct InodeSummary *isp, Inode ino)
1827 struct versionStamp version;
1830 if (!VALID_INO(ino))
1832 IH_CREATE(NULL, salvinfo->fileSysDevice, salvinfo->fileSysPath, 0, isp->RWvolumeId,
1833 INODESPECIAL, VI_LINKTABLE, isp->RWvolumeId);
1834 if (!VALID_INO(ino))
1836 ("Unable to allocate link table inode for volume %" AFS_VOLID_FMT " (error = %d)\n",
1837 afs_printable_VolumeId_lu(isp->RWvolumeId), errno);
1838 IH_INIT(salvinfo->VGLinkH, salvinfo->fileSysDevice, isp->RWvolumeId, ino);
1839 fdP = IH_OPEN(salvinfo->VGLinkH);
1841 Abort("Can't open link table for volume %" AFS_VOLID_FMT " (error = %d)\n",
1842 afs_printable_VolumeId_lu(isp->RWvolumeId), errno);
1844 if (FDH_TRUNC(fdP, sizeof(version) + sizeof(short)) < 0)
1845 Abort("Can't truncate link table for volume %" AFS_VOLID_FMT " (error = %d)\n",
1846 afs_printable_VolumeId_lu(isp->RWvolumeId), errno);
1848 version.magic = LINKTABLEMAGIC;
1849 version.version = LINKTABLEVERSION;
1851 if (FDH_PWRITE(fdP, (char *)&version, sizeof(version), 0)
1853 Abort("Can't truncate link table for volume %" AFS_VOLID_FMT " (error = %d)\n",
1854 afs_printable_VolumeId_lu(isp->RWvolumeId), errno);
1856 FDH_REALLYCLOSE(fdP);
1858 /* If the volume summary exits (i.e., the V*.vol header file exists),
1859 * then set this inode there as well.
1861 if (isp->volSummary)
1862 isp->volSummary->header.linkTable = ino;
1871 SVGParms_t *parms = (SVGParms_t *) arg;
1872 DoSalvageVolumeGroup(parms->svgp_salvinfo, parms->svgp_inodeSummaryp, parms->svgp_count);
1877 nt_SalvageVolumeGroup(struct SalvInfo *salvinfo, struct InodeSummary *isp, int nVols)
1880 pthread_attr_t tattr;
1884 /* Initialize per volume global variables, even if later code does so */
1885 salvinfo->VolumeChanged = 0;
1886 salvinfo->VGLinkH = NULL;
1887 salvinfo->VGLinkH_cnt = 0;
1888 memset(&salvinfo->VolInfo, 0, sizeof(salvinfo->VolInfo));
1890 parms.svgp_inodeSummaryp = isp;
1891 parms.svgp_count = nVols;
1892 parms.svgp_salvinfo = salvinfo;
1893 code = pthread_attr_init(&tattr);
1895 Log("Failed to salvage volume group %u: pthread_attr_init()\n",
1899 code = pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_JOINABLE);
1901 Log("Failed to salvage volume group %u: pthread_attr_setdetachstate()\n", isp->RWvolumeId);
1904 code = pthread_create(&tid, &tattr, nt_SVG, &parms);
1906 Log("Failed to create thread to salvage volume group %u\n",
1910 (void)pthread_join(tid, NULL);
1912 #endif /* AFS_NT40_ENV */
1915 DoSalvageVolumeGroup(struct SalvInfo *salvinfo, struct InodeSummary *isp, int nVols)
1917 struct ViceInodeInfo *inodes, *allInodes, *ip;
1918 int i, totalInodes, size, salvageTo;
1922 int dec_VGLinkH = 0;
1924 FdHandle_t *fdP = NULL;
1926 salvinfo->VGLinkH_cnt = 0;
1927 haveRWvolume = (isp->volumeId == isp->RWvolumeId
1928 && isp->nSpecialInodes > 0);
1929 if ((!ShowMounts) || (ShowMounts && !haveRWvolume)) {
1930 if (!ForceSalvage && QuickCheck(salvinfo, isp, nVols))
1933 if (ShowMounts && !haveRWvolume)
1935 if (canfork && !debug && Fork() != 0) {
1936 (void)Wait("Salvage volume group");
1939 for (i = 0, totalInodes = 0; i < nVols; i++)
1940 totalInodes += isp[i].nInodes;
1941 size = totalInodes * sizeof(struct ViceInodeInfo);
1942 inodes = malloc(size);
1943 allInodes = inodes - isp->index; /* this would the base of all the inodes
1944 * for the partition, if all the inodes
1945 * had been read into memory */
1947 (salvinfo->inodeFd, isp->index * sizeof(struct ViceInodeInfo),
1949 opr_Verify(OS_READ(salvinfo->inodeFd, inodes, size) == size);
1951 /* Don't try to salvage a read write volume if there isn't one on this
1953 salvageTo = haveRWvolume ? 0 : 1;
1955 #ifdef AFS_NAMEI_ENV
1956 ino = FindLinkHandle(isp, nVols, allInodes);
1957 if (VALID_INO(ino)) {
1958 IH_INIT(salvinfo->VGLinkH, salvinfo->fileSysDevice, isp->RWvolumeId, ino);
1959 fdP = IH_OPEN(salvinfo->VGLinkH);
1961 if (VALID_INO(ino) && fdP != NULL) {
1962 struct versionStamp header;
1963 afs_sfsize_t nBytes;
1965 nBytes = FDH_PREAD(fdP, (char *)&header, sizeof(struct versionStamp), 0);
1966 if (nBytes != sizeof(struct versionStamp)
1967 || header.magic != LINKTABLEMAGIC) {
1968 Log("Bad linktable header for volume %" AFS_VOLID_FMT ".\n", afs_printable_VolumeId_lu(isp->RWvolumeId));
1969 FDH_REALLYCLOSE(fdP);
1973 if (!VALID_INO(ino) || fdP == NULL) {
1974 Log("%s link table for volume %" AFS_VOLID_FMT ".\n",
1975 Testing ? "Would have recreated" : "Recreating", afs_printable_VolumeId_lu(isp->RWvolumeId));
1977 IH_INIT(salvinfo->VGLinkH, salvinfo->fileSysDevice, -1, -1);
1980 struct ViceInodeInfo *ip;
1981 CreateLinkTable(salvinfo, isp, ino);
1982 fdP = IH_OPEN(salvinfo->VGLinkH);
1983 /* Sync fake 1 link counts to the link table, now that it exists */
1985 for (i = 0; i < nVols; i++) {
1986 ip = allInodes + isp[i].index;
1987 for (j = isp[i].nSpecialInodes; j < isp[i].nInodes; j++) {
1988 namei_SetLinkCount(fdP, ip[j].inodeNumber, 1, 1);
1995 FDH_REALLYCLOSE(fdP);
1997 IH_INIT(salvinfo->VGLinkH, salvinfo->fileSysDevice, -1, -1);
2000 /* Salvage in reverse order--read/write volume last; this way any
2001 * Inodes not referenced by the time we salvage the read/write volume
2002 * can be picked up by the read/write volume */
2003 /* ACTUALLY, that's not done right now--the inodes just vanish */
2004 for (i = nVols - 1; i >= salvageTo; i--) {
2006 struct InodeSummary *lisp = &isp[i];
2007 #ifdef AFS_NAMEI_ENV
2008 /* If only the RO is present on this partition, the link table
2009 * shows up as a RW volume special file. Need to make sure the
2010 * salvager doesn't try to salvage the non-existent RW.
2012 if (rw && nVols > 1 && isp[i].nSpecialInodes == 1) {
2013 /* If this only special inode is the link table, continue */
2014 if (inodes->u.special.type == VI_LINKTABLE) {
2021 Log("%s VOLUME %" AFS_VOLID_FMT "%s.\n", rw ? "SALVAGING" : "CHECKING CLONED",
2022 afs_printable_VolumeId_lu(lisp->volumeId), (Testing ? "(READONLY mode)" : ""));
2023 /* Check inodes twice. The second time do things seriously. This
2024 * way the whole RO volume can be deleted, below, if anything goes wrong */
2025 for (check = 1; check >= 0; check--) {
2027 if (SalvageVolumeHeaderFile(salvinfo, lisp, allInodes, rw, check, &deleteMe)
2029 MaybeZapVolume(salvinfo, lisp, "Volume header", deleteMe, check);
2030 if (rw && deleteMe) {
2031 haveRWvolume = 0; /* This will cause its inodes to be deleted--since salvage
2032 * volume won't be called */
2038 if (rw && check == 1)
2040 if (SalvageVnodes(salvinfo, isp, lisp, allInodes, check) == -1) {
2041 MaybeZapVolume(salvinfo, lisp, "Vnode index", 0, check);
2047 /* Fix actual inode counts */
2050 Log("totalInodes %d\n",totalInodes);
2051 for (ip = inodes; totalInodes; ip++, totalInodes--) {
2052 static int TraceBadLinkCounts = 0;
2053 #ifdef AFS_NAMEI_ENV
2054 if (salvinfo->VGLinkH->ih_ino == ip->inodeNumber) {
2055 dec_VGLinkH = ip->linkCount - salvinfo->VGLinkH_cnt;
2056 VGLinkH_p1 = ip->u.param[0];
2057 continue; /* Deal with this last. */
2060 if (ip->linkCount != 0 && TraceBadLinkCounts) {
2061 TraceBadLinkCounts--; /* Limit reports, per volume */
2062 Log("#### DEBUG #### Link count incorrect by %d; inode %s, size %llu, p=(%u,%u,%u,%u)\n", ip->linkCount, PrintInode(stmp, ip->inodeNumber), (afs_uintmax_t) ip->byteCount, ip->u.param[0], ip->u.param[1], ip->u.param[2], ip->u.param[3]); /* VolumeId in param */
2064 while (ip->linkCount > 0) {
2065 /* below used to assert, not break */
2067 if (IH_DEC(salvinfo->VGLinkH, ip->inodeNumber, ip->u.param[0])) {
2068 Log("idec failed. inode %s errno %d\n",
2069 PrintInode(stmp, ip->inodeNumber), errno);
2075 while (ip->linkCount < 0) {
2076 /* these used to be asserts */
2078 if (IH_INC(salvinfo->VGLinkH, ip->inodeNumber, ip->u.param[0])) {
2079 Log("iinc failed. inode %s errno %d\n",
2080 PrintInode(stmp, ip->inodeNumber), errno);
2087 #ifdef AFS_NAMEI_ENV
2088 while (dec_VGLinkH > 0) {
2089 if (IH_DEC(salvinfo->VGLinkH, salvinfo->VGLinkH->ih_ino, VGLinkH_p1) < 0) {
2090 Log("idec failed on link table, errno = %d\n", errno);
2094 while (dec_VGLinkH < 0) {
2095 if (IH_INC(salvinfo->VGLinkH, salvinfo->VGLinkH->ih_ino, VGLinkH_p1) < 0) {
2096 Log("iinc failed on link table, errno = %d\n", errno);
2103 /* Directory consistency checks on the rw volume */
2105 SalvageVolume(salvinfo, isp, salvinfo->VGLinkH);
2106 IH_RELEASE(salvinfo->VGLinkH);
2108 if (canfork && !debug) {
2115 QuickCheck(struct SalvInfo *salvinfo, struct InodeSummary *isp, int nVols)
2117 /* Check headers BEFORE forking */
2121 for (i = 0; i < nVols; i++) {
2122 struct VolumeSummary *vs = isp[i].volSummary;
2123 VolumeDiskData volHeader;
2125 /* Don't salvage just because phantom rw volume is there... */
2126 /* (If a read-only volume exists, read/write inodes must also exist) */
2127 if (i == 0 && isp->nSpecialInodes == 0 && nVols > 1)
2131 IH_INIT(h, salvinfo->fileSysDevice, vs->header.parent, vs->header.volumeInfo);
2132 if (IH_IREAD(h, 0, (char *)&volHeader, sizeof(volHeader))
2133 == sizeof(volHeader)
2134 && volHeader.stamp.magic == VOLUMEINFOMAGIC
2135 && volHeader.dontSalvage == DONT_SALVAGE
2136 && volHeader.needsSalvaged == 0 && volHeader.destroyMe == 0) {
2137 if (volHeader.inUse != 0) {
2138 volHeader.inUse = 0;
2139 volHeader.inService = 1;
2141 if (IH_IWRITE(h, 0, (char *)&volHeader, sizeof(volHeader))
2142 != sizeof(volHeader)) {
2158 /* SalvageVolumeHeaderFile
2160 * Salvage the top level V*.vol header file. Make sure the special files
2161 * exist and that there are no duplicates.
2163 * Calls SalvageHeader for each possible type of volume special file.
2167 SalvageVolumeHeaderFile(struct SalvInfo *salvinfo, struct InodeSummary *isp,
2168 struct ViceInodeInfo *inodes, int RW,
2169 int check, int *deleteMe)
2172 struct ViceInodeInfo *ip;
2173 int allinodesobsolete = 1;
2174 struct VolumeDiskHeader diskHeader;
2175 afs_int32 (*writefunc)(VolumeDiskHeader_t *, struct DiskPartition64 *) = NULL;
2177 struct VolumeHeader tempHeader;
2178 struct afs_inode_info stuff[MAXINODETYPE];
2180 /* keeps track of special inodes that are probably 'good'; they are
2181 * referenced in the vol header, and are included in the given inodes
2186 } goodspecial[MAXINODETYPE];
2191 memset(goodspecial, 0, sizeof(goodspecial));
2193 skip = calloc(isp->nSpecialInodes, sizeof(*skip));
2195 Log("cannot allocate memory for inode skip array when salvaging "
2196 "volume %lu; not performing duplicate special inode recovery\n",
2197 afs_printable_uint32_lu(isp->volumeId));
2198 /* still try to perform the salvage; the skip array only does anything
2199 * if we detect duplicate special inodes */
2202 init_inode_info(&tempHeader, stuff);
2205 * First, look at the special inodes and see if any are referenced by
2206 * the existing volume header. If we find duplicate special inodes, we
2207 * can use this information to use the referenced inode (it's more
2208 * likely to be the 'good' one), and throw away the duplicates.
2210 if (isp->volSummary && skip) {
2211 /* use tempHeader, so we can use the stuff[] array to easily index
2212 * into the isp->volSummary special inodes */
2213 memcpy(&tempHeader, &isp->volSummary->header, sizeof(struct VolumeHeader));
2215 for (i = 0; i < isp->nSpecialInodes; i++) {
2216 ip = &inodes[isp->index + i];
2217 if (ip->u.special.type <= 0 || ip->u.special.type > MAXINODETYPE) {
2218 /* will get taken care of in a later loop */
2221 if (ip->inodeNumber == *(stuff[ip->u.special.type - 1].inode)) {
2222 goodspecial[ip->u.special.type-1].valid = 1;
2223 goodspecial[ip->u.special.type-1].inode = ip->inodeNumber;
2228 memset(&tempHeader, 0, sizeof(tempHeader));
2229 tempHeader.stamp.magic = VOLUMEHEADERMAGIC;
2230 tempHeader.stamp.version = VOLUMEHEADERVERSION;
2231 tempHeader.id = isp->volumeId;
2232 tempHeader.parent = isp->RWvolumeId;
2234 /* Check for duplicates (inodes are sorted by type field) */
2235 for (i = 0; i < isp->nSpecialInodes - 1; i++) {
2236 ip = &inodes[isp->index + i];
2237 if (ip->u.special.type == (ip + 1)->u.special.type) {
2238 afs_ino_str_t stmp1, stmp2;
2240 if (ip->u.special.type <= 0 || ip->u.special.type > MAXINODETYPE) {
2241 /* Will be caught in the loop below */
2245 Log("Duplicate special %d inodes for volume %" AFS_VOLID_FMT " found (%s, %s);\n",
2246 ip->u.special.type, afs_printable_VolumeId_lu(isp->volumeId),
2247 PrintInode(stmp1, ip->inodeNumber),
2248 PrintInode(stmp2, (ip+1)->inodeNumber));
2250 if (skip && goodspecial[ip->u.special.type-1].valid) {
2251 Inode gi = goodspecial[ip->u.special.type-1].inode;
2254 Log("using special inode referenced by vol header (%s)\n",
2255 PrintInode(stmp1, gi));
2258 /* the volume header references some special inode of
2259 * this type in the inodes array; are we it? */
2260 if (ip->inodeNumber != gi) {
2262 } else if ((ip+1)->inodeNumber != gi) {
2263 /* in case this is the last iteration; we need to
2264 * make sure we check ip+1, too */
2269 Log("cannot determine which is correct; salvage of volume %" AFS_VOLID_FMT " aborted\n", afs_printable_VolumeId_lu(isp->volumeId));
2277 for (i = 0; i < isp->nSpecialInodes; i++) {
2279 ip = &inodes[isp->index + i];
2280 if (ip->u.special.type <= 0 || ip->u.special.type > MAXINODETYPE) {
2282 Log("Rubbish header inode %s of type %d\n",
2283 PrintInode(stmp, ip->inodeNumber),
2284 ip->u.special.type);
2290 Log("Rubbish header inode %s of type %d; deleted\n",
2291 PrintInode(stmp, ip->inodeNumber),
2292 ip->u.special.type);
2293 } else if (!stuff[ip->u.special.type - 1].obsolete) {
2294 if (skip && skip[i]) {
2295 if (orphans == ORPH_REMOVE) {
2296 Log("Removing orphan special inode %s of type %d\n",
2297 PrintInode(stmp, ip->inodeNumber), ip->u.special.type);
2300 Log("Ignoring orphan special inode %s of type %d\n",
2301 PrintInode(stmp, ip->inodeNumber), ip->u.special.type);
2302 /* fall through to the ip->linkCount--; line below */
2305 *(stuff[ip->u.special.type - 1].inode) = ip->inodeNumber;
2306 allinodesobsolete = 0;
2308 if (!check && ip->u.special.type != VI_LINKTABLE)
2309 ip->linkCount--; /* Keep the inode around */
2317 if (allinodesobsolete) {
2324 salvinfo->VGLinkH_cnt++; /* one for every header. */
2326 if (!RW && !check && isp->volSummary) {
2327 ClearROInUseBit(isp->volSummary);
2331 for (i = 0; i < MAXINODETYPE; i++) {
2332 if (stuff[i].inodeType == VI_LINKTABLE) {
2333 /* Gross hack: SalvageHeader does a bcmp on the volume header.
2334 * And we may have recreated the link table earlier, so set the
2335 * RW header as well. The header magic was already checked.
2337 if (VALID_INO(salvinfo->VGLinkH->ih_ino)) {
2338 *stuff[i].inode = salvinfo->VGLinkH->ih_ino;
2342 if (SalvageHeader(salvinfo, &stuff[i], isp, check, deleteMe) == -1 && check)
2346 if (isp->volSummary == NULL) {
2348 char headerName[64];
2349 snprintf(headerName, sizeof headerName, VFORMAT,
2350 afs_printable_VolumeId_lu(isp->volumeId));
2351 snprintf(path, sizeof path, "%s" OS_DIRSEP "%s",
2352 salvinfo->fileSysPath, headerName);
2354 Log("No header file for volume %" AFS_VOLID_FMT "\n", afs_printable_VolumeId_lu(isp->volumeId));
2358 Log("No header file for volume %" AFS_VOLID_FMT "; %screating %s\n",
2359 afs_printable_VolumeId_lu(isp->volumeId), (Testing ? "it would have been " : ""),
2361 isp->volSummary = calloc(1, sizeof(struct VolumeSummary));
2363 writefunc = VCreateVolumeDiskHeader;
2366 char headerName[64];
2367 /* hack: these two fields are obsolete... */
2368 isp->volSummary->header.volumeAcl = 0;
2369 isp->volSummary->header.volumeMountTable = 0;
2372 (&isp->volSummary->header, &tempHeader,
2373 sizeof(struct VolumeHeader))) {
2374 VolumeExternalName_r(isp->volumeId, headerName, sizeof(headerName));
2375 snprintf(path, sizeof path, "%s" OS_DIRSEP "%s",
2376 salvinfo->fileSysPath, headerName);
2378 Log("Header file %s is damaged or no longer valid%s\n", path,
2379 (check ? "" : "; repairing"));
2383 writefunc = VWriteVolumeDiskHeader;
2387 memcpy(&isp->volSummary->header, &tempHeader,
2388 sizeof(struct VolumeHeader));
2391 Log("It would have written a new header file for volume %" AFS_VOLID_FMT "\n",
2392 afs_printable_VolumeId_lu(isp->volumeId));
2395 VolumeHeaderToDisk(&diskHeader, &tempHeader);
2396 code = (*writefunc)(&diskHeader, salvinfo->fileSysPartition);
2398 Log("Error %ld writing volume header file for volume %" AFS_VOLID_FMT "\n",
2399 afs_printable_int32_ld(code),
2400 afs_printable_VolumeId_lu(diskHeader.id));
2405 IH_INIT(isp->volSummary->volumeInfoHandle, salvinfo->fileSysDevice, isp->RWvolumeId,
2406 isp->volSummary->header.volumeInfo);
2411 SalvageHeader(struct SalvInfo *salvinfo, struct afs_inode_info *sp,
2412 struct InodeSummary *isp, int check, int *deleteMe)
2415 VolumeDiskData volumeInfo;
2416 struct versionStamp fileHeader;
2425 #ifndef AFS_NAMEI_ENV
2426 if (sp->inodeType == VI_LINKTABLE)
2427 return 0; /* header magic was already checked */
2429 if (*(sp->inode) == 0) {
2431 Log("Missing inode in volume header (%s)\n", sp->description);
2435 Log("Missing inode in volume header (%s); %s\n", sp->description,
2436 (Testing ? "it would have recreated it" : "recreating"));
2439 IH_CREATE(NULL, salvinfo->fileSysDevice, salvinfo->fileSysPath, 0, isp->volumeId,
2440 INODESPECIAL, sp->inodeType, isp->RWvolumeId);
2441 if (!VALID_INO(*(sp->inode)))
2443 ("Unable to allocate inode (%s) for volume header (error = %d)\n",
2444 sp->description, errno);
2449 IH_INIT(specH, salvinfo->fileSysDevice, isp->RWvolumeId, *(sp->inode));
2450 fdP = IH_OPEN(specH);
2451 if (OKToZap && (fdP == NULL) && BadError(errno)) {
2452 /* bail out early and destroy the volume */
2454 Log("Still can't open volume header inode (%s), destroying volume\n", sp->description);
2461 Abort("Unable to open inode (%s) of volume header (error = %d)\n",
2462 sp->description, errno);
2465 && (FDH_PREAD(fdP, (char *)&header, sp->size, 0) != sp->size
2466 || header.fileHeader.magic != sp->stamp.magic)) {
2468 Log("Part of the header (%s) is corrupted\n", sp->description);
2469 FDH_REALLYCLOSE(fdP);
2473 Log("Part of the header (%s) is corrupted; recreating\n",
2476 /* header can be garbage; make sure we don't read garbage data from
2478 memset(&header, 0, sizeof(header));
2480 #ifdef AFS_NAMEI_ENV
2481 if (namei_FixSpecialOGM(fdP, check)) {
2482 Log("Error with namei header OGM data (%s)\n", sp->description);
2483 FDH_REALLYCLOSE(fdP);
2488 if (sp->inodeType == VI_VOLINFO
2489 && header.volumeInfo.destroyMe == DESTROY_ME) {
2492 FDH_REALLYCLOSE(fdP);
2496 if (recreate && !Testing) {
2499 ("Internal error: recreating volume header (%s) in check mode\n",
2501 nBytes = FDH_TRUNC(fdP, 0);
2503 Abort("Unable to truncate volume header file (%s) (error = %d)\n",
2504 sp->description, errno);
2506 /* The following code should be moved into vutil.c */
2507 if (sp->inodeType == VI_VOLINFO) {
2509 memset(&header.volumeInfo, 0, sizeof(header.volumeInfo));
2510 header.volumeInfo.stamp = sp->stamp;
2511 header.volumeInfo.id = isp->volumeId;
2512 header.volumeInfo.parentId = isp->RWvolumeId;
2513 sprintf(header.volumeInfo.name, "bogus.%" AFS_VOLID_FMT, afs_printable_VolumeId_lu(isp->volumeId));
2514 Log("Warning: the name of volume %" AFS_VOLID_FMT " is now \"bogus.%" AFS_VOLID_FMT "\"\n",
2515 afs_printable_VolumeId_lu(isp->volumeId), afs_printable_VolumeId_lu(isp->volumeId));
2516 header.volumeInfo.inService = 0;
2517 header.volumeInfo.blessed = 0;
2518 /* The + 1000 is a hack in case there are any files out in venus caches */
2519 header.volumeInfo.uniquifier = (isp->maxUniquifier + 1) + 1000;
2520 header.volumeInfo.type = (isp->volumeId == isp->RWvolumeId ? readwriteVolume : readonlyVolume); /* XXXX */
2521 header.volumeInfo.needsCallback = 0;
2522 gettimeofday(&tp, NULL);
2523 header.volumeInfo.creationDate = tp.tv_sec;
2525 FDH_PWRITE(fdP, (char *)&header.volumeInfo,
2526 sizeof(header.volumeInfo), 0);
2527 if (nBytes != sizeof(header.volumeInfo)) {
2530 ("Unable to write volume header file (%s) (errno = %d)\n",
2531 sp->description, errno);
2532 Abort("Unable to write entire volume header file (%s)\n",
2536 nBytes = FDH_PWRITE(fdP, (char *)&sp->stamp, sizeof(sp->stamp), 0);
2537 if (nBytes != sizeof(sp->stamp)) {
2540 ("Unable to write version stamp in volume header file (%s) (errno = %d)\n",
2541 sp->description, errno);
2543 ("Unable to write entire version stamp in volume header file (%s)\n",
2548 FDH_REALLYCLOSE(fdP);
2550 if (sp->inodeType == VI_VOLINFO) {
2551 salvinfo->VolInfo = header.volumeInfo;
2555 if (salvinfo->VolInfo.updateDate) {
2556 strcpy(update, TimeStamp(salvinfo->VolInfo.updateDate, 0));
2558 Log("%s (%" AFS_VOLID_FMT ") %supdated %s\n", salvinfo->VolInfo.name,
2559 afs_printable_VolumeId_lu(salvinfo->VolInfo.id),
2560 (Testing ? "it would have been " : ""), update);
2562 strcpy(update, TimeStamp(salvinfo->VolInfo.creationDate, 0));
2564 Log("%s (%" AFS_VOLID_FMT ") not updated (created %s)\n",
2565 salvinfo->VolInfo.name, afs_printable_VolumeId_lu(salvinfo->VolInfo.id), update);
2575 SalvageVnodes(struct SalvInfo *salvinfo,
2576 struct InodeSummary *rwIsp,
2577 struct InodeSummary *thisIsp,
2578 struct ViceInodeInfo *inodes, int check)
2580 int ilarge, ismall, ioffset, RW, nInodes;
2581 ioffset = rwIsp->index + rwIsp->nSpecialInodes; /* first inode */
2584 RW = (rwIsp == thisIsp);
2585 nInodes = (rwIsp->nInodes - rwIsp->nSpecialInodes);
2587 SalvageIndex(salvinfo, thisIsp->volSummary->header.smallVnodeIndex, vSmall, RW,
2588 &inodes[ioffset], nInodes, thisIsp->volSummary, check);
2589 if (check && ismall == -1)
2592 SalvageIndex(salvinfo, thisIsp->volSummary->header.largeVnodeIndex, vLarge, RW,
2593 &inodes[ioffset], nInodes, thisIsp->volSummary, check);
2594 return (ilarge == 0 && ismall == 0 ? 0 : -1);
2598 SalvageIndex(struct SalvInfo *salvinfo, Inode ino, VnodeClass class, int RW,
2599 struct ViceInodeInfo *ip, int nInodes,
2600 struct VolumeSummary *volSummary, int check)
2602 char buf[SIZEOF_LARGEDISKVNODE];
2603 struct VnodeDiskObject *vnode = (struct VnodeDiskObject *)buf;
2605 StreamHandle_t *file;
2606 struct VnodeClassInfo *vcp;
2608 afs_sfsize_t nVnodes;
2609 afs_fsize_t vnodeLength;
2611 afs_ino_str_t stmp1, stmp2;
2615 IH_INIT(handle, salvinfo->fileSysDevice, volSummary->header.parent, ino);
2616 fdP = IH_OPEN(handle);
2617 opr_Assert(fdP != NULL);
2618 file = FDH_FDOPEN(fdP, "r+");
2619 opr_Assert(file != NULL);
2620 vcp = &VnodeClassInfo[class];
2621 size = OS_SIZE(fdP->fd_fd);
2622 opr_Assert(size != -1);
2623 nVnodes = (size / vcp->diskSize) - 1;
2625 opr_Assert((nVnodes + 1) * vcp->diskSize == size);
2626 opr_Verify(STREAM_ASEEK(file, vcp->diskSize) == 0);
2630 for (vnodeIndex = 0;
2631 nVnodes && STREAM_READ(vnode, vcp->diskSize, 1, file) == 1;
2632 nVnodes--, vnodeIndex++) {
2633 if (vnode->type != vNull) {
2634 int vnodeChanged = 0;
2635 int vnodeNumber = bitNumberToVnodeNumber(vnodeIndex, class);
2636 if (VNDISK_GET_INO(vnode) == 0) {
2638 /* Log("### DEBUG ### Deleted Vnode with 0 inode (vnode %d)\n", vnodeNumber); */
2639 memset(vnode, 0, vcp->diskSize);
2643 if (vcp->magic != vnode->vnodeMagic) {
2644 /* bad magic #, probably partially created vnode */
2646 Log("Partially allocated vnode %d: bad magic (is %lx should be %lx)\n",
2647 vnodeNumber, afs_printable_uint32_lu(vnode->vnodeMagic),
2648 afs_printable_uint32_lu(vcp->magic));
2649 memset(vnode, 0, vcp->diskSize);
2653 Log("Partially allocated vnode %d deleted.\n",
2655 memset(vnode, 0, vcp->diskSize);
2659 /* ****** Should do a bit more salvage here: e.g. make sure
2660 * vnode type matches what it should be given the index */
2661 while (nInodes && ip->u.vnode.vnodeNumber < vnodeNumber) {
2662 /* if (vnodeIdToClass(ip->u.vnode.vnodeNumber) == class && RW) {
2663 * Log("Inode %d: says it belongs to non-existing vnode %d\n",
2664 * ip->inodeNumber, ip->u.vnode.vnodeNumber);
2671 while (nInodes && ip->u.vnode.vnodeNumber == vnodeNumber) {
2672 /* The following doesn't work, because the version number
2673 * is not maintained correctly by the file server */
2674 /*if (vnode->uniquifier == ip->u.vnode.vnodeUniquifier &&
2675 * vnode->dataVersion == ip->u.vnode.inodeDataVersion)
2677 if (VNDISK_GET_INO(vnode) == ip->inodeNumber)
2683 /* For RW volume, look for vnode with matching inode number;
2684 * if no such match, take the first determined by our sort
2686 struct ViceInodeInfo *lip = ip;
2687 int lnInodes = nInodes;
2689 && lip->u.vnode.vnodeNumber == vnodeNumber) {
2690 if (VNDISK_GET_INO(vnode) == lip->inodeNumber) {
2699 if (nInodes && ip->u.vnode.vnodeNumber == vnodeNumber) {
2700 /* "Matching" inode */
2704 vu = vnode->uniquifier;
2705 iu = ip->u.vnode.vnodeUniquifier;
2706 vd = vnode->dataVersion;
2707 id = ip->u.vnode.inodeDataVersion;
2709 * Because of the possibility of the uniquifier overflows (> 4M)
2710 * we compare them modulo the low 22-bits; we shouldn't worry
2711 * about mismatching since they shouldn't to many old
2712 * uniquifiers of the same vnode...
2714 if (IUnique(vu) != IUnique(iu)) {
2716 Log("Vnode %u: vnode.unique, %u, does not match inode unique, %u; fixed, but status will be wrong\n", vnodeNumber, IUnique(vu), IUnique(iu));
2719 vnode->uniquifier = iu;
2720 #ifdef AFS_3DISPARES
2721 vnode->dataVersion = (id >= vd ?
2724 1887437 ? vd : id) :
2727 1887437 ? id : vd));
2729 #if defined(AFS_SGI_EXMAG)
2730 vnode->dataVersion = (id >= vd ?
2733 15099494 ? vd : id) :
2736 15099494 ? id : vd));
2738 vnode->dataVersion = (id > vd ? id : vd);
2739 #endif /* AFS_SGI_EXMAG */
2740 #endif /* AFS_3DISPARES */
2743 /* don't bother checking for vd > id any more, since
2744 * partial file transfers always result in this state,
2745 * and you can't do much else anyway (you've already
2746 * found the best data you can) */
2747 #ifdef AFS_3DISPARES
2748 if (!vnodeIsDirectory(vnodeNumber)
2749 && ((vd < id && (id - vd) < 1887437)
2750 || ((vd > id && (vd - id) > 1887437)))) {
2752 #if defined(AFS_SGI_EXMAG)
2753 if (!vnodeIsDirectory(vnodeNumber)
2754 && ((vd < id && (id - vd) < 15099494)
2755 || ((vd > id && (vd - id) > 15099494)))) {
2757 if (!vnodeIsDirectory(vnodeNumber) && vd < id) {
2758 #endif /* AFS_SGI_EXMAG */
2761 Log("Vnode %d: version < inode version; fixed (old status)\n", vnodeNumber);
2762 vnode->dataVersion = id;
2767 if (ip->inodeNumber != VNDISK_GET_INO(vnode)) {
2770 Log("Vnode %d: inode number incorrect (is %s should be %s). FileSize=%llu\n", vnodeNumber, PrintInode(stmp1, VNDISK_GET_INO(vnode)), PrintInode(stmp2, ip->inodeNumber), (afs_uintmax_t) ip->byteCount);
2772 VNDISK_SET_INO(vnode, ip->inodeNumber);
2777 Log("Vnode %d: inode number incorrect; changed from %s to %s. FileSize=%llu\n", vnodeNumber, PrintInode(stmp1, VNDISK_GET_INO(vnode)), PrintInode(stmp2, ip->inodeNumber), (afs_uintmax_t) ip->byteCount);
2779 VNDISK_SET_INO(vnode, ip->inodeNumber);
2782 VNDISK_GET_LEN(vnodeLength, vnode);
2783 if (ip->byteCount != vnodeLength) {
2786 Log("Vnode %d: length incorrect; (is %llu should be %llu)\n", vnodeNumber, (afs_uintmax_t) vnodeLength, (afs_uintmax_t) ip->byteCount);
2791 Log("Vnode %d: length incorrect; changed from %llu to %llu\n", vnodeNumber, (afs_uintmax_t) vnodeLength, (afs_uintmax_t) ip->byteCount);
2792 VNDISK_SET_LEN(vnode, ip->byteCount);
2796 ip->linkCount--; /* Keep the inode around */
2799 } else { /* no matching inode */
2801 if (VNDISK_GET_INO(vnode) != 0
2802 || vnode->type == vDirectory) {
2803 /* No matching inode--get rid of the vnode */
2805 if (VNDISK_GET_INO(vnode)) {
2807 Log("Vnode %d (unique %u): corresponding inode %s is missing\n", vnodeNumber, vnode->uniquifier, PrintInode(stmp, VNDISK_GET_INO(vnode)));
2811 Log("Vnode %d (unique %u): bad directory vnode (no inode number listed)\n", vnodeNumber, vnode->uniquifier);
2816 if (VNDISK_GET_INO(vnode)) {
2818 time_t serverModifyTime = vnode->serverModifyTime;
2819 Log("Vnode %d (unique %u): corresponding inode %s is missing; vnode deleted, vnode mod time=%s", vnodeNumber, vnode->uniquifier, PrintInode(stmp, VNDISK_GET_INO(vnode)), ctime(&serverModifyTime));
2823 time_t serverModifyTime = vnode->serverModifyTime;
2824 Log("Vnode %d (unique %u): bad directory vnode (no inode number listed); vnode deleted, vnode mod time=%s", vnodeNumber, vnode->uniquifier, ctime(&serverModifyTime));
2827 memset(vnode, 0, vcp->diskSize);
2830 /* Should not reach here becuase we checked for
2831 * (inodeNumber == 0) above. And where we zero the vnode,
2832 * we also goto vnodeDone.
2836 while (nInodes && ip->u.vnode.vnodeNumber == vnodeNumber) {
2840 } /* VNDISK_GET_INO(vnode) != 0 */
2842 opr_Assert(!(vnodeChanged && check));
2843 if (vnodeChanged && !Testing) {
2844 opr_Verify(IH_IWRITE(handle,
2845 vnodeIndexOffset(vcp, vnodeNumber),
2846 (char *)vnode, vcp->diskSize)
2848 salvinfo->VolumeChanged = 1; /* For break call back */
2859 struct VnodeEssence *
2860 CheckVnodeNumber(struct SalvInfo *salvinfo, VnodeId vnodeNumber)
2863 struct VnodeInfo *vip;
2866 class = vnodeIdToClass(vnodeNumber);
2867 vip = &salvinfo->vnodeInfo[class];
2868 offset = vnodeIdToBitNumber(vnodeNumber);
2869 return (offset >= vip->nVnodes ? NULL : &vip->vnodes[offset]);
2873 CopyOnWrite(struct SalvInfo *salvinfo, struct DirSummary *dir)
2875 /* Copy the directory unconditionally if we are going to change it:
2876 * not just if was cloned.
2878 struct VnodeDiskObject vnode;
2879 struct VnodeClassInfo *vcp = &VnodeClassInfo[vLarge];
2880 Inode oldinode, newinode;
2883 if (dir->copied || Testing)
2885 DFlush(); /* Well justified paranoia... */
2888 IH_IREAD(salvinfo->vnodeInfo[vLarge].handle,
2889 vnodeIndexOffset(vcp, dir->vnodeNumber), (char *)&vnode,
2891 opr_Assert(code == sizeof(vnode));
2892 oldinode = VNDISK_GET_INO(&vnode);
2893 /* Increment the version number by a whole lot to avoid problems with
2894 * clients that were promised new version numbers--but the file server
2895 * crashed before the versions were written to disk.
2898 IH_CREATE(dir->ds_linkH, salvinfo->fileSysDevice, salvinfo->fileSysPath, 0, dir->rwVid,
2899 dir->vnodeNumber, vnode.uniquifier, vnode.dataVersion +=
2901 opr_Assert(VALID_INO(newinode));
2902 opr_Verify(CopyInode(salvinfo->fileSysDevice, oldinode, newinode,
2905 VNDISK_SET_INO(&vnode, newinode);
2907 IH_IWRITE(salvinfo->vnodeInfo[vLarge].handle,
2908 vnodeIndexOffset(vcp, dir->vnodeNumber), (char *)&vnode,
2910 opr_Assert(code == sizeof(vnode));
2912 SetSalvageDirHandle(&dir->dirHandle, dir->dirHandle.dirh_handle->ih_vid,
2913 salvinfo->fileSysDevice, newinode,
2914 &salvinfo->VolumeChanged);
2915 /* Don't delete the original inode right away, because the directory is
2916 * still being scanned.
2922 * This function should either successfully create a new dir, or give up
2923 * and leave things the way they were. In particular, if it fails to write
2924 * the new dir properly, it should return w/o changing the reference to the
2928 CopyAndSalvage(struct SalvInfo *salvinfo, struct DirSummary *dir)
2930 struct VnodeDiskObject vnode;
2931 struct VnodeClassInfo *vcp = &VnodeClassInfo[vLarge];
2932 Inode oldinode, newinode;
2937 afs_int32 parentUnique = 1;
2938 struct VnodeEssence *vnodeEssence;
2943 Log("Salvaging directory %u...\n", dir->vnodeNumber);
2945 IH_IREAD(salvinfo->vnodeInfo[vLarge].handle,
2946 vnodeIndexOffset(vcp, dir->vnodeNumber), (char *)&vnode,
2948 opr_Assert(lcode == sizeof(vnode));
2949 oldinode = VNDISK_GET_INO(&vnode);
2950 /* Increment the version number by a whole lot to avoid problems with
2951 * clients that were promised new version numbers--but the file server
2952 * crashed before the versions were written to disk.
2955 IH_CREATE(dir->ds_linkH, salvinfo->fileSysDevice, salvinfo->fileSysPath, 0, dir->rwVid,
2956 dir->vnodeNumber, vnode.uniquifier, vnode.dataVersion +=
2958 opr_Assert(VALID_INO(newinode));
2959 SetSalvageDirHandle(&newdir, dir->rwVid, salvinfo->fileSysDevice, newinode,
2960 &salvinfo->VolumeChanged);
2962 /* Assign . and .. vnode numbers from dir and vnode.parent.
2963 * The uniquifier for . is in the vnode.
2964 * The uniquifier for .. might be set to a bogus value of 1 and
2965 * the salvager will later clean it up.
2967 if (vnode.parent && (vnodeEssence = CheckVnodeNumber(salvinfo, vnode.parent))) {
2968 parentUnique = (vnodeEssence->unique ? vnodeEssence->unique : 1);
2971 DirSalvage(&dir->dirHandle, &newdir, dir->vnodeNumber,
2973 (vnode.parent ? vnode.parent : dir->vnodeNumber),
2978 /* didn't really build the new directory properly, let's just give up. */
2979 code = IH_DEC(dir->ds_linkH, newinode, dir->rwVid);
2980 Log("Directory salvage returned code %d, continuing.\n", code);
2982 Log("also failed to decrement link count on new inode");
2986 Log("Checking the results of the directory salvage...\n");
2987 if (!DirOK(&newdir)) {
2988 Log("Directory salvage failed!!!; restoring old version of the directory.\n");
2989 code = IH_DEC(dir->ds_linkH, newinode, dir->rwVid);
2990 opr_Assert(code == 0);
2994 VNDISK_SET_INO(&vnode, newinode);
2995 length = afs_dir_Length(&newdir);
2996 VNDISK_SET_LEN(&vnode, length);
2998 IH_IWRITE(salvinfo->vnodeInfo[vLarge].handle,
2999 vnodeIndexOffset(vcp, dir->vnodeNumber), (char *)&vnode,
3001 opr_Assert(lcode == sizeof(vnode));
3004 nt_sync(salvinfo->fileSysDevice);
3006 sync(); /* this is slow, but hopefully rarely called. We don't have
3007 * an open FD on the file itself to fsync.
3011 salvinfo->vnodeInfo[vLarge].handle->ih_synced = 1;
3013 /* make sure old directory file is really closed */
3014 fdP = IH_OPEN(dir->dirHandle.dirh_handle);
3015 FDH_REALLYCLOSE(fdP);
3017 code = IH_DEC(dir->ds_linkH, oldinode, dir->rwVid);
3018 opr_Assert(code == 0);
3019 dir->dirHandle = newdir;
3023 * arguments for JudgeEntry.
3025 struct judgeEntry_params {
3026 struct DirSummary *dir; /**< directory we're examining entries in */
3027 struct SalvInfo *salvinfo; /**< SalvInfo for the current salvage job */
3031 JudgeEntry(void *arock, char *name, afs_int32 vnodeNumber,
3034 struct judgeEntry_params *params = arock;
3035 struct DirSummary *dir = params->dir;
3036 struct SalvInfo *salvinfo = params->salvinfo;
3037 struct VnodeEssence *vnodeEssence;
3038 afs_int32 dirOrphaned, todelete;
3040 dirOrphaned = IsVnodeOrphaned(salvinfo, dir->vnodeNumber);
3042 vnodeEssence = CheckVnodeNumber(salvinfo, vnodeNumber);
3043 if (vnodeEssence == NULL) {
3045 Log("dir vnode %u: invalid entry deleted: %s" OS_DIRSEP "%s (vnode %u, unique %u)\n", dir->vnodeNumber, dir->name ? dir->name : "??", name, vnodeNumber, unique);
3048 CopyOnWrite(salvinfo, dir);
3049 opr_Verify(afs_dir_Delete(&dir->dirHandle, name) == 0);
3054 #ifndef AFS_NAMEI_ENV
3055 /* On AIX machines, don't allow entries to point to inode 0. That is a special
3056 * mount inode for the partition. If this inode were deleted, it would crash
3059 if (vnodeEssence->InodeNumber == 0) {
3060 Log("dir vnode %d: invalid entry: %s" OS_DIRSEP "%s has no inode (vnode %d, unique %d)%s\n", dir->vnodeNumber, (dir->name ? dir->name : "??"), name, vnodeNumber, unique, (Testing ? "-- would have deleted" : " -- deleted"));
3062 CopyOnWrite(salvinfo, dir);
3063 opr_Verify(afs_dir_Delete(&dir->dirHandle, name) == 0);
3070 if (!(vnodeNumber & 1) && !Showmode
3071 && !(vnodeEssence->count || vnodeEssence->unique
3072 || vnodeEssence->modeBits)) {
3073 Log("dir vnode %u: invalid entry: %s" OS_DIRSEP "%s (vnode %u, unique %u)%s\n",
3074 dir->vnodeNumber, (dir->name ? dir->name : "??"), name,
3075 vnodeNumber, unique,
3076 ((!unique) ? (Testing ? "-- would have deleted" : " -- deleted") :
3080 CopyOnWrite(salvinfo, dir);
3081 opr_Verify(afs_dir_Delete(&dir->dirHandle, name) == 0);
3087 /* Check if the Uniquifiers match. If not, change the directory entry
3088 * so its unique matches the vnode unique. Delete if the unique is zero
3089 * or if the directory is orphaned.
3091 if (!vnodeEssence->unique || (vnodeEssence->unique) != unique) {
3092 if (!vnodeEssence->unique
3093 && ((strcmp(name, "..") == 0) || (strcmp(name, ".") == 0))) {
3094 /* This is an orphaned directory. Don't delete the . or ..
3095 * entry. Otherwise, it will get created in the next
3096 * salvage and deleted again here. So Just skip it.
3101 todelete = ((!vnodeEssence->unique || dirOrphaned) ? 1 : 0);
3104 Log("dir vnode %u: %s" OS_DIRSEP "%s (vnode %u): unique changed from %u to %u %s\n", dir->vnodeNumber, (dir->name ? dir->name : "??"), name, vnodeNumber, unique, vnodeEssence->unique, (!todelete ? "" : (Testing ? "-- would have deleted" : "-- deleted")));
3108 fid.Vnode = vnodeNumber;
3109 fid.Unique = vnodeEssence->unique;
3110 CopyOnWrite(salvinfo, dir);
3111 opr_Verify(afs_dir_Delete(&dir->dirHandle, name) == 0);
3113 opr_Verify(afs_dir_Create(&dir->dirHandle, name, &fid) == 0);
3116 return 0; /* no need to continue */
3119 if (strcmp(name, ".") == 0) {
3120 if (dir->vnodeNumber != vnodeNumber || (dir->unique != unique)) {
3122 Log("directory vnode %u.%u: bad '.' entry (was %u.%u); fixed\n", dir->vnodeNumber, dir->unique, vnodeNumber, unique);
3125 CopyOnWrite(salvinfo, dir);
3126 opr_Verify(afs_dir_Delete(&dir->dirHandle, ".") == 0);
3127 fid.Vnode = dir->vnodeNumber;
3128 fid.Unique = dir->unique;
3129 opr_Verify(afs_dir_Create(&dir->dirHandle, ".", &fid) == 0);
3130 vnodeNumber = fid.Vnode; /* Get the new Essence */
3131 unique = fid.Unique;
3132 vnodeEssence = CheckVnodeNumber(salvinfo, vnodeNumber);
3136 } else if (strcmp(name, "..") == 0) {
3139 struct VnodeEssence *dotdot;
3140 pa.Vnode = dir->parent;
3141 dotdot = CheckVnodeNumber(salvinfo, pa.Vnode);
3142 opr_Assert(dotdot != NULL); /* XXX Should not be assert */
3143 pa.Unique = dotdot->unique;
3145 pa.Vnode = dir->vnodeNumber;
3146 pa.Unique = dir->unique;
3148 if ((pa.Vnode != vnodeNumber) || (pa.Unique != unique)) {
3150 Log("directory vnode %u.%u: bad '..' entry (was %u.%u); fixed\n", dir->vnodeNumber, dir->unique, vnodeNumber, unique);
3152 CopyOnWrite(salvinfo, dir);
3153 opr_Verify(afs_dir_Delete(&dir->dirHandle, "..") == 0);
3154 opr_Verify(afs_dir_Create(&dir->dirHandle, "..", &pa) == 0);
3157 vnodeNumber = pa.Vnode; /* Get the new Essence */
3159 vnodeEssence = CheckVnodeNumber(salvinfo, vnodeNumber);
3161 dir->haveDotDot = 1;
3162 } else if (strncmp(name, ".__afs", 6) == 0) {
3164 Log("dir vnode %u: special old unlink-while-referenced file %s %s deleted (vnode %u)\n", dir->vnodeNumber, name, (Testing ? "would have been" : "is"), vnodeNumber);
3167 CopyOnWrite(salvinfo, dir);
3168 opr_Verify(afs_dir_Delete(&dir->dirHandle, name) == 0);
3170 vnodeEssence->claimed = 0; /* Not claimed: Orphaned */
3171 vnodeEssence->todelete = 1; /* Will later delete vnode and decr inode */
3174 if (ShowSuid && (vnodeEssence->modeBits & 06000))
3175 Log("FOUND suid/sgid file: %s" OS_DIRSEP "%s (%u.%u %05o) author %u (vnode %u dir %u)\n", dir->name ? dir->name : "??", name, vnodeEssence->owner, vnodeEssence->group, vnodeEssence->modeBits, vnodeEssence->author, vnodeNumber, dir->vnodeNumber);
3176 if (/* ShowMounts && */ (vnodeEssence->type == vSymlink)
3177 && !(vnodeEssence->modeBits & 0111)) {
3178 afs_sfsize_t nBytes;
3184 IH_INIT(ihP, salvinfo->fileSysDevice, dir->dirHandle.dirh_handle->ih_vid,
3185 vnodeEssence->InodeNumber);
3188 Log("ERROR %s could not open mount point vnode %u\n", dir->vname, vnodeNumber);
3192 size = FDH_SIZE(fdP);
3194 Log("ERROR %s mount point has invalid size %d, vnode %u\n", dir->vname, (int)size, vnodeNumber);
3195 FDH_REALLYCLOSE(fdP);
3202 nBytes = FDH_PREAD(fdP, buf, size, 0);
3203 if (nBytes == size) {
3205 if ( (*buf != '#' && *buf != '%') || buf[strlen(buf)-1] != '.' ) {
3206 Log("Volume %" AFS_VOLID_FMT " (%s) mount point %s" OS_DIRSEP "%s to '%s' invalid, %s to symbolic link\n",
3207 afs_printable_VolumeId_lu(dir->dirHandle.dirh_handle->ih_vid), dir->vname, dir->name ? dir->name : "??", name, buf,
3208 Testing ? "would convert" : "converted");
3209 vnodeEssence->modeBits |= 0111;
3210 vnodeEssence->changed = 1;
3211 } else if (ShowMounts)
3212 Log("In volume %" AFS_VOLID_FMT " (%s) found mountpoint %s" OS_DIRSEP "%s to '%s'\n",
3213 afs_printable_VolumeId_lu(dir->dirHandle.dirh_handle->ih_vid),
3214 dir->vname, dir->name ? dir->name : "??", name, buf);
3216 Log("Volume %s cound not read mount point vnode %u size %d code %d\n",
3217 dir->vname, vnodeNumber, (int)size, (int)nBytes);
3219 FDH_REALLYCLOSE(fdP);
3222 if (ShowRootFiles && vnodeEssence->owner == 0 && vnodeNumber != 1)
3223 Log("FOUND root file: %s" OS_DIRSEP "%s (%u.%u %05o) author %u (vnode %u dir %u)\n", dir->name ? dir->name : "??", name, vnodeEssence->owner, vnodeEssence->group, vnodeEssence->modeBits, vnodeEssence->author, vnodeNumber, dir->vnodeNumber);
3224 if (vnodeIdToClass(vnodeNumber) == vLarge
3225 && vnodeEssence->name == NULL) {
3226 vnodeEssence->name = strdup(name);
3229 /* The directory entry points to the vnode. Check to see if the
3230 * vnode points back to the directory. If not, then let the
3231 * directory claim it (else it might end up orphaned). Vnodes
3232 * already claimed by another directory are deleted from this
3233 * directory: hardlinks to the same vnode are not allowed
3234 * from different directories.
3236 if (vnodeEssence->parent != dir->vnodeNumber) {
3237 if (!vnodeEssence->claimed && !dirOrphaned && vnodeNumber != 1) {
3238 /* Vnode does not point back to this directory.
3239 * Orphaned dirs cannot claim a file (it may belong to
3240 * another non-orphaned dir).
3243 Log("dir vnode %u: %s" OS_DIRSEP "%s (vnode %u, unique %u) -- parent vnode %schanged from %u to %u\n", dir->vnodeNumber, (dir->name ? dir->name : "??"), name, vnodeNumber, unique, (Testing ? "would have been " : ""), vnodeEssence->parent, dir->vnodeNumber);
3245 vnodeEssence->parent = dir->vnodeNumber;
3246 vnodeEssence->changed = 1;
3248 /* Vnode was claimed by another directory */
3251 Log("dir vnode %u: %s" OS_DIRSEP "%s parent vnode is %u (vnode %u, unique %u) -- %sdeleted\n", dir->vnodeNumber, (dir->name ? dir->name : "??"), name, vnodeEssence->parent, vnodeNumber, unique, (Testing ? "would have been " : ""));
3252 } else if (vnodeNumber == 1) {
3253 Log("dir vnode %d: %s" OS_DIRSEP "%s is invalid (vnode %d, unique %d) -- %sdeleted\n", dir->vnodeNumber, (dir->name ? dir->name : "??"), name, vnodeNumber, unique, (Testing ? "would have been " : ""));
3255 Log("dir vnode %u: %s" OS_DIRSEP "%s already claimed by directory vnode %u (vnode %u, unique %u) -- %sdeleted\n", dir->vnodeNumber, (dir->name ? dir->name : "??"), name, vnodeEssence->parent, vnodeNumber, unique, (Testing ? "would have been " : ""));
3259 CopyOnWrite(salvinfo, dir);
3260 opr_Verify(afs_dir_Delete(&dir->dirHandle, name) == 0);
3265 /* This directory claims the vnode */
3266 vnodeEssence->claimed = 1;
3268 vnodeEssence->count--;
3273 DistilVnodeEssence(struct SalvInfo *salvinfo, VolumeId rwVId,
3274 VnodeClass class, Inode ino, Unique * maxu)
3276 struct VnodeInfo *vip = &salvinfo->vnodeInfo[class];
3277 struct VnodeClassInfo *vcp = &VnodeClassInfo[class];
3278 char buf[SIZEOF_LARGEDISKVNODE];
3279 struct VnodeDiskObject *vnode = (struct VnodeDiskObject *)buf;
3281 StreamHandle_t *file;
3286 IH_INIT(vip->handle, salvinfo->fileSysDevice, rwVId, ino);
3287 fdP = IH_OPEN(vip->handle);
3288 opr_Assert(fdP != NULL);
3289 file = FDH_FDOPEN(fdP, "r+");
3290 opr_Assert(file != NULL);
3291 size = OS_SIZE(fdP->fd_fd);
3292 opr_Assert(size != -1);
3293 vip->nVnodes = (size / vcp->diskSize) - 1;
3294 if (vip->nVnodes > 0) {
3295 opr_Assert((vip->nVnodes + 1) * vcp->diskSize == size);
3296 opr_Verify(STREAM_ASEEK(file, vcp->diskSize) == 0);
3297 opr_Verify((vip->vnodes = calloc(vip->nVnodes,
3298 sizeof(struct VnodeEssence)))
3300 if (class == vLarge) {
3301 opr_Verify((vip->inodes = calloc(vip->nVnodes, sizeof(Inode)))
3311 vip->volumeBlockCount = vip->nAllocatedVnodes = 0;
3312 for (vnodeIndex = 0, nVnodes = vip->nVnodes;
3313 nVnodes && STREAM_READ(vnode, vcp->diskSize, 1, file) == 1;
3314 nVnodes--, vnodeIndex++) {
3315 if (vnode->type != vNull) {
3316 struct VnodeEssence *vep = &vip->vnodes[vnodeIndex];
3317 afs_fsize_t vnodeLength;
3318 vip->nAllocatedVnodes++;
3319 vep->count = vnode->linkCount;
3320 VNDISK_GET_LEN(vnodeLength, vnode);
3321 vep->blockCount = nBlocks(vnodeLength);
3322 vip->volumeBlockCount += vep->blockCount;
3323 vep->parent = vnode->parent;
3324 vep->unique = vnode->uniquifier;
3325 if (*maxu < vnode->uniquifier)
3326 *maxu = vnode->uniquifier;
3327 vep->modeBits = vnode->modeBits;
3328 vep->InodeNumber = VNDISK_GET_INO(vnode);
3329 vep->type = vnode->type;
3330 vep->author = vnode->author;
3331 vep->owner = vnode->owner;
3332 vep->group = vnode->group;
3333 if (vnode->type == vDirectory) {
3334 if (class != vLarge) {
3335 VnodeId vnodeNumber = bitNumberToVnodeNumber(vnodeIndex, class);
3336 vip->nAllocatedVnodes--;
3337 memset(vnode, 0, sizeof(*vnode));
3338 IH_IWRITE(salvinfo->vnodeInfo[vSmall].handle,
3339 vnodeIndexOffset(vcp, vnodeNumber),
3340 (char *)&vnode, sizeof(vnode));
3341 salvinfo->VolumeChanged = 1;
3343 vip->inodes[vnodeIndex] = VNDISK_GET_INO(vnode);
3352 GetDirName(struct SalvInfo *salvinfo, VnodeId vnode, struct VnodeEssence *vp,
3355 struct VnodeEssence *parentvp;
3361 if (vp->parent && vp->name && (parentvp = CheckVnodeNumber(salvinfo, vp->parent))
3362 && GetDirName(salvinfo, vp->parent, parentvp, path)) {
3363 strcat(path, OS_DIRSEP);
3364 strcat(path, vp->name);
3370 /* To determine if a vnode is orhpaned or not, the vnode and all its parent
3371 * vnodes must be "claimed". The vep->claimed flag is set in JudgeEntry().
3374 IsVnodeOrphaned(struct SalvInfo *salvinfo, VnodeId vnode)
3376 struct VnodeEssence *vep;
3379 return (1); /* Vnode zero does not exist */
3381 return (0); /* The root dir vnode is always claimed */
3382 vep = CheckVnodeNumber(salvinfo, vnode); /* Get the vnode essence */
3383 if (!vep || !vep->claimed)
3384 return (1); /* Vnode is not claimed - it is orphaned */
3386 return (IsVnodeOrphaned(salvinfo, vep->parent));
3390 SalvageDir(struct SalvInfo *salvinfo, char *name, VolumeId rwVid,
3391 struct VnodeInfo *dirVnodeInfo, IHandle_t * alinkH, int i,
3392 struct DirSummary *rootdir, int *rootdirfound)
3394 static struct DirSummary dir;
3395 static struct DirHandle dirHandle;
3396 struct VnodeEssence *parent;
3397 static char path[MAXPATHLEN];
3400 if (dirVnodeInfo->vnodes[i].salvaged)
3401 return; /* already salvaged */
3404 dirVnodeInfo->vnodes[i].salvaged = 1;
3406 if (dirVnodeInfo->inodes[i] == 0)
3407 return; /* Not allocated to a directory */
3409 if (bitNumberToVnodeNumber(i, vLarge) == 1) {
3410 if (dirVnodeInfo->vnodes[i].parent) {
3411 Log("Bad parent, vnode 1; %s...\n",
3412 (Testing ? "skipping" : "salvaging"));
3413 dirVnodeInfo->vnodes[i].parent = 0;
3414 dirVnodeInfo->vnodes[i].changed = 1;
3417 parent = CheckVnodeNumber(salvinfo, dirVnodeInfo->vnodes[i].parent);
3418 if (parent && parent->salvaged == 0)
3419 SalvageDir(salvinfo, name, rwVid, dirVnodeInfo, alinkH,
3420 vnodeIdToBitNumber(dirVnodeInfo->vnodes[i].parent),
3421 rootdir, rootdirfound);
3424 dir.vnodeNumber = bitNumberToVnodeNumber(i, vLarge);
3425 dir.unique = dirVnodeInfo->vnodes[i].unique;
3428 dir.parent = dirVnodeInfo->vnodes[i].parent;
3429 dir.haveDot = dir.haveDotDot = 0;
3430 dir.ds_linkH = alinkH;
3431 SetSalvageDirHandle(&dir.dirHandle, dir.rwVid, salvinfo->fileSysDevice,
3432 dirVnodeInfo->inodes[i], &salvinfo->VolumeChanged);
3434 dirok = ((RebuildDirs && !Testing) ? 0 : DirOK(&dir.dirHandle));
3437 Log("Directory bad, vnode %u; %s...\n", dir.vnodeNumber,
3438 (Testing ? "skipping" : "salvaging"));
3441 CopyAndSalvage(salvinfo, &dir);
3443 dirVnodeInfo->inodes[i] = dir.dirHandle.dirh_inode;
3446 dirHandle = dir.dirHandle;
3449 GetDirName(salvinfo, bitNumberToVnodeNumber(i, vLarge),
3450 &dirVnodeInfo->vnodes[i], path);
3453 /* If enumeration failed for random reasons, we will probably delete
3454 * too much stuff, so we guard against this instead.
3456 struct judgeEntry_params judge_params;
3457 judge_params.salvinfo = salvinfo;
3458 judge_params.dir = &dir;
3460 opr_Verify(afs_dir_EnumerateDir(&dirHandle, JudgeEntry,
3461 &judge_params) == 0);
3464 /* Delete the old directory if it was copied in order to salvage.
3465 * CopyOnWrite has written the new inode # to the disk, but we still
3466 * have the old one in our local structure here. Thus, we idec the
3470 if (dir.copied && !Testing) {
3471 code = IH_DEC(dir.ds_linkH, dirHandle.dirh_handle->ih_ino, rwVid);
3472 opr_Assert(code == 0);
3473 dirVnodeInfo->inodes[i] = dir.dirHandle.dirh_inode;
3476 /* Remember rootdir DirSummary _after_ it has been judged */
3477 if (dir.vnodeNumber == 1 && dir.unique == 1) {
3478 memcpy(rootdir, &dir, sizeof(struct DirSummary));
3486 * Get a new FID that can be used to create a new file.
3488 * @param[in] volHeader vol header for the volume
3489 * @param[in] class what type of vnode we'll be creating (vLarge or vSmall)
3490 * @param[out] afid the FID that we can use (only Vnode and Unique are set)
3491 * @param[inout] maxunique max uniquifier for all vnodes in the volume;
3492 * updated to the new max unique if we create a new
3496 GetNewFID(struct SalvInfo *salvinfo, VolumeDiskData *volHeader,
3497 VnodeClass class, AFSFid *afid, Unique *maxunique)
3500 for (i = 0; i < salvinfo->vnodeInfo[class].nVnodes; i++) {
3501 if (salvinfo->vnodeInfo[class].vnodes[i].type == vNull) {
3505 if (i == salvinfo->vnodeInfo[class].nVnodes) {
3506 /* no free vnodes; make a new one */
3507 salvinfo->vnodeInfo[class].nVnodes++;
3508 salvinfo->vnodeInfo[class].vnodes =
3509 realloc(salvinfo->vnodeInfo[class].vnodes,
3510 sizeof(struct VnodeEssence) * (i+1));
3512 salvinfo->vnodeInfo[class].vnodes[i].type = vNull;
3515 afid->Vnode = bitNumberToVnodeNumber(i, class);
3517 if (volHeader->uniquifier < (*maxunique + 1)) {
3518 /* header uniq is bad; it will get bumped by 2000 later */
3519 afid->Unique = *maxunique + 1 + 2000;
3522 /* header uniq seems okay; just use that */
3523 afid->Unique = *maxunique = volHeader->uniquifier++;
3528 * Create a vnode for a README file explaining not to use a recreated-root vol.
3530 * @param[in] volHeader vol header for the volume
3531 * @param[in] alinkH ihandle for i/o for the volume
3532 * @param[in] vid volume id
3533 * @param[inout] maxunique max uniquifier for all vnodes in the volume;
3534 * updated to the new max unique if we create a new
3536 * @param[out] afid FID for the new readme vnode
3537 * @param[out] ainode the inode for the new readme file
3539 * @return operation status
3544 CreateReadme(struct SalvInfo *salvinfo, VolumeDiskData *volHeader,
3545 IHandle_t *alinkH, VolumeId vid, Unique *maxunique, AFSFid *afid,
3549 struct VnodeDiskObject *rvnode = NULL;
3551 IHandle_t *readmeH = NULL;
3552 struct VnodeEssence *vep;
3554 time_t now = time(NULL);
3556 /* Try to make the note brief, but informative. Only administrators should
3557 * be able to read this file at first, so we can hopefully assume they
3558 * know what AFS is, what a volume is, etc. */
3560 "This volume has been salvaged, but has lost its original root directory.\n"
3561 "The root directory that exists now has been recreated from orphan files\n"
3562 "from the rest of the volume. This recreated root directory may interfere\n"
3563 "with old cached data on clients, and there is no way the salvager can\n"
3564 "reasonably prevent that. So, it is recommended that you do not continue to\n"
3565 "use this volume, but only copy the salvaged data to a new volume.\n"
3566 "Continuing to use this volume as it exists now may cause some clients to\n"
3567 "behave oddly when accessing this volume.\n"
3568 "\n\t -- Your friendly neighborhood OpenAFS salvager\n";
3569 /* ^ the person reading this probably just lost some data, so they could
3570 * use some cheering up. */
3572 /* -1 for the trailing NUL */
3573 length = sizeof(readme) - 1;
3575 GetNewFID(salvinfo, volHeader, vSmall, afid, maxunique);
3577 vep = &salvinfo->vnodeInfo[vSmall].vnodes[vnodeIdToBitNumber(afid->Vnode)];
3579 /* create the inode and write the contents */
3580 readmeinode = IH_CREATE(alinkH, salvinfo->fileSysDevice,
3581 salvinfo->fileSysPath, 0, vid,
3582 afid->Vnode, afid->Unique, 1);
3583 if (!VALID_INO(readmeinode)) {
3584 Log("CreateReadme: readme IH_CREATE failed\n");
3588 IH_INIT(readmeH, salvinfo->fileSysDevice, vid, readmeinode);
3589 bytes = IH_IWRITE(readmeH, 0, readme, length);
3590 IH_RELEASE(readmeH);
3592 if (bytes != length) {
3593 Log("CreateReadme: IWRITE failed (%d/%d)\n", (int)bytes,
3594 (int)sizeof(readme));
3598 /* create the vnode and write it out */
3599 rvnode = calloc(1, SIZEOF_SMALLDISKVNODE);
3601 Log("CreateRootDir: error alloc'ing memory\n");
3605 rvnode->type = vFile;
3607 rvnode->modeBits = 0777;
3608 rvnode->linkCount = 1;
3609 VNDISK_SET_LEN(rvnode, length);
3610 rvnode->uniquifier = afid->Unique;
3611 rvnode->dataVersion = 1;
3612 VNDISK_SET_INO(rvnode, readmeinode);
3613 rvnode->unixModifyTime = rvnode->serverModifyTime = now;
3618 rvnode->vnodeMagic = VnodeClassInfo[vSmall].magic;
3620 bytes = IH_IWRITE(salvinfo->vnodeInfo[vSmall].handle,
3621 vnodeIndexOffset(&VnodeClassInfo[vSmall], afid->Vnode),
3622 (char*)rvnode, SIZEOF_SMALLDISKVNODE);
3624 if (bytes != SIZEOF_SMALLDISKVNODE) {
3625 Log("CreateReadme: IH_IWRITE failed (%d/%d)\n", (int)bytes,
3626 (int)SIZEOF_SMALLDISKVNODE);
3630 /* update VnodeEssence for new readme vnode */
3631 salvinfo->vnodeInfo[vSmall].nAllocatedVnodes++;
3633 vep->blockCount = nBlocks(length);
3634 salvinfo->vnodeInfo[vSmall].volumeBlockCount += vep->blockCount;
3635 vep->parent = rvnode->parent;
3636 vep->unique = rvnode->uniquifier;
3637 vep->modeBits = rvnode->modeBits;
3638 vep->InodeNumber = VNDISK_GET_INO(rvnode);
3639 vep->type = rvnode->type;
3640 vep->author = rvnode->author;
3641 vep->owner = rvnode->owner;
3642 vep->group = rvnode->group;
3652 *ainode = readmeinode;
3657 if (IH_DEC(alinkH, readmeinode, vid)) {
3658 Log("CreateReadme (recovery): IH_DEC failed\n");
3670 * create a root dir for a volume that lacks one.
3672 * @param[in] volHeader vol header for the volume
3673 * @param[in] alinkH ihandle for disk access for this volume group
3674 * @param[in] vid volume id we're dealing with
3675 * @param[out] rootdir populated with info about the new root dir
3676 * @param[inout] maxunique max uniquifier for all vnodes in the volume;
3677 * updated to the new max unique if we create a new
3680 * @return operation status
3685 CreateRootDir(struct SalvInfo *salvinfo, VolumeDiskData *volHeader,
3686 IHandle_t *alinkH, VolumeId vid, struct DirSummary *rootdir,
3690 int decroot = 0, decreadme = 0;
3691 AFSFid did, readmeid;
3694 struct VnodeDiskObject *rootvnode = NULL;
3695 struct acl_accessList *ACL;
3698 struct VnodeEssence *vep;
3699 Inode readmeinode = 0;
3700 time_t now = time(NULL);
3702 if (!salvinfo->vnodeInfo[vLarge].vnodes && !salvinfo->vnodeInfo[vSmall].vnodes) {
3703 Log("Not creating new root dir; volume appears to lack any vnodes\n");
3707 if (!salvinfo->vnodeInfo[vLarge].vnodes) {
3708 /* We don't have any large vnodes in the volume; allocate room
3709 * for one so we can recreate the root dir */
3710 salvinfo->vnodeInfo[vLarge].nVnodes = 1;
3711 salvinfo->vnodeInfo[vLarge].vnodes = calloc(1, sizeof(struct VnodeEssence));
3712 salvinfo->vnodeInfo[vLarge].inodes = calloc(1, sizeof(Inode));
3714 opr_Assert(salvinfo->vnodeInfo[vLarge].vnodes);
3715 opr_Assert(salvinfo->vnodeInfo[vLarge].inodes);
3718 vep = &salvinfo->vnodeInfo[vLarge].vnodes[vnodeIdToBitNumber(1)];
3719 ip = &salvinfo->vnodeInfo[vLarge].inodes[vnodeIdToBitNumber(1)];
3720 if (vep->type != vNull) {
3721 Log("Not creating new root dir; existing vnode 1 is non-null\n");
3725 if (CreateReadme(salvinfo, volHeader, alinkH, vid, maxunique, &readmeid,
3726 &readmeinode) != 0) {
3731 /* set the DV to a very high number, so it is unlikely that we collide
3732 * with a cached DV */
3735 rootinode = IH_CREATE(alinkH, salvinfo->fileSysDevice, salvinfo->fileSysPath,
3737 if (!VALID_INO(rootinode)) {
3738 Log("CreateRootDir: IH_CREATE failed\n");
3743 SetSalvageDirHandle(&rootdir->dirHandle, vid, salvinfo->fileSysDevice,
3744 rootinode, &salvinfo->VolumeChanged);
3748 if (afs_dir_MakeDir(&rootdir->dirHandle, (afs_int32*)&did, (afs_int32*)&did)) {
3749 Log("CreateRootDir: MakeDir failed\n");
3752 if (afs_dir_Create(&rootdir->dirHandle, "README.ROOTDIR", &readmeid)) {
3753 Log("CreateRootDir: Create failed\n");
3757 length = afs_dir_Length(&rootdir->dirHandle);
3758 DZap(&rootdir->dirHandle);
3760 /* create the new root dir vnode */
3761 rootvnode = calloc(1, SIZEOF_LARGEDISKVNODE);
3763 Log("CreateRootDir: malloc failed\n");
3767 /* only give 'rl' permissions to 'system:administrators'. We do this to
3768 * try to catch the attention of an administrator, that they should not
3769 * be writing to this directory or continue to use it. */
3770 ACL = VVnodeDiskACL(rootvnode);
3771 ACL->size = sizeof(struct acl_accessList);
3772 ACL->version = ACL_ACLVERSION;
3776 ACL->entries[0].id = -204; /* system:administrators */
3777 ACL->entries[0].rights = PRSFS_READ | PRSFS_LOOKUP;
3779 rootvnode->type = vDirectory;
3780 rootvnode->cloned = 0;
3781 rootvnode->modeBits = 0777;
3782 rootvnode->linkCount = 2;
3783 VNDISK_SET_LEN(rootvnode, length);
3784 rootvnode->uniquifier = 1;
3785 rootvnode->dataVersion = dv;
3786 VNDISK_SET_INO(rootvnode, rootinode);
3787 rootvnode->unixModifyTime = rootvnode->serverModifyTime = now;
3788 rootvnode->author = 0;
3789 rootvnode->owner = 0;
3790 rootvnode->parent = 0;
3791 rootvnode->group = 0;
3792 rootvnode->vnodeMagic = VnodeClassInfo[vLarge].magic;
3794 /* write it out to disk */
3795 bytes = IH_IWRITE(salvinfo->vnodeInfo[vLarge].handle,
3796 vnodeIndexOffset(&VnodeClassInfo[vLarge], 1),
3797 (char*)rootvnode, SIZEOF_LARGEDISKVNODE);
3799 if (bytes != SIZEOF_LARGEDISKVNODE) {
3800 /* just cast to int and don't worry about printing real 64-bit ints;
3801 * a large disk vnode isn't anywhere near the 32-bit limit */
3802 Log("CreateRootDir: IH_IWRITE failed (%d/%d)\n", (int)bytes,
3803 (int)SIZEOF_LARGEDISKVNODE);
3807 /* update VnodeEssence for the new root vnode */
3808 salvinfo->vnodeInfo[vLarge].nAllocatedVnodes++;
3810 vep->blockCount = nBlocks(length);
3811 salvinfo->vnodeInfo[vLarge].volumeBlockCount += vep->blockCount;
3812 vep->parent = rootvnode->parent;
3813 vep->unique = rootvnode->uniquifier;
3814 vep->modeBits = rootvnode->modeBits;
3815 vep->InodeNumber = VNDISK_GET_INO(rootvnode);
3816 vep->type = rootvnode->type;
3817 vep->author = rootvnode->author;
3818 vep->owner = rootvnode->owner;
3819 vep->group = rootvnode->group;
3829 /* update DirSummary for the new root vnode */
3830 rootdir->vnodeNumber = 1;
3831 rootdir->unique = 1;
3832 rootdir->haveDot = 1;
3833 rootdir->haveDotDot = 1;
3834 rootdir->rwVid = vid;
3835 rootdir->copied = 0;
3836 rootdir->parent = 0;
3837 rootdir->name = strdup(".");
3838 rootdir->vname = volHeader->name;
3839 rootdir->ds_linkH = alinkH;
3846 if (decroot && IH_DEC(alinkH, rootinode, vid)) {
3847 Log("CreateRootDir (recovery): IH_DEC (root) failed\n");
3849 if (decreadme && IH_DEC(alinkH, readmeinode, vid)) {
3850 Log("CreateRootDir (recovery): IH_DEC (readme) failed\n");
3860 * salvage a volume group.
3862 * @param[in] salvinfo information for the curent salvage job
3863 * @param[in] rwIsp inode summary for rw volume
3864 * @param[in] alinkH link table inode handle
3866 * @return operation status
3870 SalvageVolume(struct SalvInfo *salvinfo, struct InodeSummary *rwIsp, IHandle_t * alinkH)
3872 /* This routine, for now, will only be called for read-write volumes */
3874 int BlocksInVolume = 0, FilesInVolume = 0;
3876 struct DirSummary rootdir, oldrootdir;
3877 struct VnodeInfo *dirVnodeInfo;
3878 struct VnodeDiskObject vnode;
3879 VolumeDiskData volHeader;
3881 int orphaned, rootdirfound = 0;
3882 Unique maxunique = 0; /* the maxUniquifier from the vnodes */
3883 afs_int32 ofiles = 0, oblocks = 0; /* Number of orphaned files/blocks */
3884 struct VnodeEssence *vep;
3887 afs_sfsize_t nBytes;
3889 VnodeId LFVnode, ThisVnode;
3890 Unique LFUnique, ThisUnique;
3894 vid = rwIsp->volSummary->header.id;
3895 IH_INIT(h, salvinfo->fileSysDevice, vid, rwIsp->volSummary->header.volumeInfo);
3896 nBytes = IH_IREAD(h, 0, (char *)&volHeader, sizeof(volHeader));
3897 opr_Assert(nBytes == sizeof(volHeader));
3898 opr_Assert(volHeader.stamp.magic == VOLUMEINFOMAGIC);
3899 opr_Assert(volHeader.destroyMe != DESTROY_ME);
3900 /* (should not have gotten this far with DESTROY_ME flag still set!) */
3902 DistilVnodeEssence(salvinfo, vid, vLarge,
3903 rwIsp->volSummary->header.largeVnodeIndex, &maxunique);
3904 DistilVnodeEssence(salvinfo, vid, vSmall,
3905 rwIsp->volSummary->header.smallVnodeIndex, &maxunique);
3907 dirVnodeInfo = &salvinfo->vnodeInfo[vLarge];
3908 for (i = 0; i < dirVnodeInfo->nVnodes; i++) {
3909 SalvageDir(salvinfo, volHeader.name, vid, dirVnodeInfo, alinkH, i,
3910 &rootdir, &rootdirfound);
3913 nt_sync(salvinfo->fileSysDevice);
3915 sync(); /* This used to be done lower level, for every dir */
3922 if (!rootdirfound && (orphans == ORPH_ATTACH) && !Testing) {
3924 Log("Cannot find root directory for volume %lu; attempting to create "
3925 "a new one\n", afs_printable_uint32_lu(vid));
3927 code = CreateRootDir(salvinfo, &volHeader, alinkH, vid, &rootdir,
3932 salvinfo->VolumeChanged = 1;
3936 /* Parse each vnode looking for orphaned vnodes and
3937 * connect them to the tree as orphaned (if requested).
3939 oldrootdir = rootdir;
3940 for (class = 0; class < nVNODECLASSES; class++) {
3941 for (v = 0; v < salvinfo->vnodeInfo[class].nVnodes; v++) {
3942 vep = &(salvinfo->vnodeInfo[class].vnodes[v]);
3943 ThisVnode = bitNumberToVnodeNumber(v, class);
3944 ThisUnique = vep->unique;
3946 if ((vep->type == 0) || vep->claimed || ThisVnode == 1)
3947 continue; /* Ignore unused, claimed, and root vnodes */
3949 /* This vnode is orphaned. If it is a directory vnode, then the '..'
3950 * entry in this vnode had incremented the parent link count (In
3951 * JudgeEntry()). We need to go to the parent and decrement that
3952 * link count. But if the parent's unique is zero, then the parent
3953 * link count was not incremented in JudgeEntry().
3955 if (class == vLarge) { /* directory vnode */
3956 pv = vnodeIdToBitNumber(vep->parent);
3957 if (salvinfo->vnodeInfo[vLarge].vnodes[pv].unique != 0) {
3958 if (vep->parent == 1 && newrootdir) {
3959 /* this vnode's parent was the volume root, and
3960 * we just created the volume root. So, the parent
3961 * dir didn't exist during JudgeEntry, so the link
3962 * count was not inc'd there, so don't dec it here.
3968 salvinfo->vnodeInfo[vLarge].vnodes[pv].count++;
3974 continue; /* If no rootdir, can't attach orphaned files */
3976 /* Here we attach orphaned files and directories into the
3977 * root directory, LVVnode, making sure link counts stay correct.
3979 if ((orphans == ORPH_ATTACH) && !vep->todelete && !Testing) {
3980 LFVnode = rootdir.vnodeNumber; /* Lost+Found vnode number */
3981 LFUnique = rootdir.unique; /* Lost+Found uniquifier */
3983 /* Update this orphaned vnode's info. Its parent info and
3984 * link count (do for orphaned directories and files).
3986 vep->parent = LFVnode; /* Parent is the root dir */
3987 vep->unique = LFUnique;
3990 vep->count--; /* Inc link count (root dir will pt to it) */
3992 /* If this orphaned vnode is a directory, change '..'.
3993 * The name of the orphaned dir/file is unknown, so we
3994 * build a unique name. No need to CopyOnWrite the directory
3995 * since it is not connected to tree in BK or RO volume and
3996 * won't be visible there.
3998 if (class == vLarge) {
4002 /* Remove and recreate the ".." entry in this orphaned directory */
4003 SetSalvageDirHandle(&dh, vid, salvinfo->fileSysDevice,
4004 salvinfo->vnodeInfo[class].inodes[v],
4005 &salvinfo->VolumeChanged);
4007 pa.Unique = LFUnique;
4008 opr_Verify(afs_dir_Delete(&dh, "..") == 0);
4009 opr_Verify(afs_dir_Create(&dh, "..", &pa) == 0);
4011 /* The original parent's link count was decremented above.
4012 * Here we increment the new parent's link count.
4014 pv = vnodeIdToBitNumber(LFVnode);
4015 salvinfo->vnodeInfo[vLarge].vnodes[pv].count--;
4019 /* Go to the root dir and add this entry. The link count of the
4020 * root dir was incremented when ".." was created. Try 10 times.
4022 for (j = 0; j < 10; j++) {
4023 pa.Vnode = ThisVnode;
4024 pa.Unique = ThisUnique;
4026 snprintf(npath, sizeof npath, "%s.%u.%u",
4027 ((class == vLarge) ? "__ORPHANDIR__"
4028 : "__ORPHANFILE__"),
4029 ThisVnode, ThisUnique);
4031 CopyOnWrite(salvinfo, &rootdir);
4032 code = afs_dir_Create(&rootdir.dirHandle, npath, &pa);
4036 ThisUnique += 50; /* Try creating a different file */
4038 opr_Assert(code == 0);
4039 Log("Attaching orphaned %s to volume's root dir as %s\n",
4040 ((class == vLarge) ? "directory" : "file"), npath);
4042 } /* for each vnode in the class */
4043 } /* for each class of vnode */
4045 /* Delete the old rootinode directory if the rootdir was CopyOnWrite */
4047 if (rootdirfound && !oldrootdir.copied && rootdir.copied) {
4049 IH_DEC(oldrootdir.ds_linkH, oldrootdir.dirHandle.dirh_inode,
4051 opr_Assert(code == 0);
4052 /* dirVnodeInfo->inodes[?] is not updated with new inode number */
4055 DFlush(); /* Flush the changes */
4056 if (!rootdirfound && (orphans == ORPH_ATTACH)) {
4057 Log("Cannot attach orphaned files and directories: Root directory not found\n");
4058 orphans = ORPH_IGNORE;
4061 /* Write out all changed vnodes. Orphaned files and directories
4062 * will get removed here also (if requested).
4064 for (class = 0; class < nVNODECLASSES; class++) {
4065 afs_sfsize_t nVnodes = salvinfo->vnodeInfo[class].nVnodes;
4066 struct VnodeClassInfo *vcp = &VnodeClassInfo[class];
4067 struct VnodeEssence *vnodes = salvinfo->vnodeInfo[class].vnodes;
4068 FilesInVolume += salvinfo->vnodeInfo[class].nAllocatedVnodes;
4069 BlocksInVolume += salvinfo->vnodeInfo[class].volumeBlockCount;
4070 for (i = 0; i < nVnodes; i++) {
4071 struct VnodeEssence *vnp = &vnodes[i];
4072 VnodeId vnodeNumber = bitNumberToVnodeNumber(i, class);
4074 /* If the vnode is good but is unclaimed (not listed in
4075 * any directory entries), then it is orphaned.
4078 if ((vnp->type != 0) && (orphaned = IsVnodeOrphaned(salvinfo, vnodeNumber))) {
4079 vnp->claimed = 0; /* Makes IsVnodeOrphaned calls faster */
4083 if (vnp->changed || vnp->count) {
4086 IH_IREAD(salvinfo->vnodeInfo[class].handle,
4087 vnodeIndexOffset(vcp, vnodeNumber),
4088 (char *)&vnode, sizeof(vnode));
4089 opr_Assert(nBytes == sizeof(vnode));
4091 vnode.parent = vnp->parent;
4092 oldCount = vnode.linkCount;
4093 vnode.linkCount = vnode.linkCount - vnp->count;
4096 orphaned = IsVnodeOrphaned(salvinfo, vnodeNumber);
4098 if (!vnp->todelete) {
4099 /* Orphans should have already been attached (if requested) */
4100 opr_Assert(orphans != ORPH_ATTACH);
4101 oblocks += vnp->blockCount;
4104 if (((orphans == ORPH_REMOVE) || vnp->todelete)
4106 BlocksInVolume -= vnp->blockCount;
4108 if (VNDISK_GET_INO(&vnode)) {
4110 IH_DEC(alinkH, VNDISK_GET_INO(&vnode), vid);
4111 opr_Assert(code == 0);
4113 memset(&vnode, 0, sizeof(vnode));
4115 } else if (vnp->count) {
4117 Log("Vnode %u: link count incorrect (was %d, %s %d)\n", vnodeNumber, oldCount, (Testing ? "would have changed to" : "now"), vnode.linkCount);
4120 vnode.modeBits = vnp->modeBits;
4123 vnode.dataVersion++;
4126 IH_IWRITE(salvinfo->vnodeInfo[class].handle,
4127 vnodeIndexOffset(vcp, vnodeNumber),
4128 (char *)&vnode, sizeof(vnode));
4129 opr_Assert(nBytes == sizeof(vnode));
4131 salvinfo->VolumeChanged = 1;
4135 if (!Showmode && ofiles) {
4136 Log("%s %d orphaned files and directories (approx. %u KB)\n",
4138 && (orphans == ORPH_REMOVE)) ? "Removed" : "Found", ofiles,
4142 for (class = 0; class < nVNODECLASSES; class++) {
4143 struct VnodeInfo *vip = &salvinfo->vnodeInfo[class];
4144 for (i = 0; i < vip->nVnodes; i++)
4145 if (vip->vnodes[i].name)
4146 free(vip->vnodes[i].name);
4153 /* Set correct resource utilization statistics */
4154 volHeader.filecount = FilesInVolume;
4155 volHeader.diskused = BlocksInVolume;
4157 /* Make sure the uniquifer is big enough: maxunique is the real maxUniquifier */
4158 if (volHeader.uniquifier < (maxunique + 1)) {
4160 Log("Volume uniquifier is too low; fixed\n");
4161 /* Plus 2,000 in case there are workstations out there with
4162 * cached vnodes that have since been deleted
4164 volHeader.uniquifier = (maxunique + 1 + 2000);
4168 Log("*** WARNING: Root directory recreated, but volume is fragile! "
4169 "Only use this salvaged volume to copy data to another volume; "
4170 "do not continue to use this volume (%lu) as-is.\n",
4171 afs_printable_uint32_lu(vid));
4174 if (!Testing && salvinfo->VolumeChanged) {
4175 #ifdef FSSYNC_BUILD_CLIENT
4176 if (salvinfo->useFSYNC) {
4177 afs_int32 fsync_code;
4179 fsync_code = FSYNC_VolOp(vid, NULL, FSYNC_VOL_BREAKCBKS, FSYNC_SALVAGE, NULL);
4181 Log("Error trying to tell the fileserver to break callbacks for "
4182 "changed volume %lu; error code %ld\n",
4183 afs_printable_uint32_lu(vid),
4184 afs_printable_int32_ld(fsync_code));
4186 salvinfo->VolumeChanged = 0;
4189 #endif /* FSSYNC_BUILD_CLIENT */
4191 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
4192 if (!salvinfo->useFSYNC) {
4193 /* A volume's contents have changed, but the fileserver will not
4194 * break callbacks on the volume until it tries to load the vol
4195 * header. So, to reduce the amount of time a client could have
4196 * stale data, remove fsstate.dat, so the fileserver will init
4197 * callback state with all clients. This is a very coarse hammer,
4198 * and in the future we should just record which volumes have
4200 code = unlink(AFSDIR_SERVER_FSSTATE_FILEPATH);
4201 if (code && errno != ENOENT) {
4202 Log("Error %d when trying to unlink FS state file %s\n", errno,
4203 AFSDIR_SERVER_FSSTATE_FILEPATH);
4209 /* Turn off the inUse bit; the volume's been salvaged! */
4210 volHeader.inUse = 0; /* clear flag indicating inUse@last crash */
4211 volHeader.needsSalvaged = 0; /* clear 'damaged' flag */
4212 volHeader.inService = 1; /* allow service again */
4213 volHeader.needsCallback = (salvinfo->VolumeChanged != 0);
4214 volHeader.dontSalvage = DONT_SALVAGE;
4215 salvinfo->VolumeChanged = 0;
4217 nBytes = IH_IWRITE(h, 0, (char *)&volHeader, sizeof(volHeader));
4218 opr_Assert(nBytes == sizeof(volHeader));
4221 Log("%sSalvaged %s (%" AFS_VOLID_FMT "): %d files, %d blocks\n",
4222 (Testing ? "It would have " : ""), volHeader.name, afs_printable_VolumeId_lu(volHeader.id),
4223 FilesInVolume, BlocksInVolume);
4226 IH_RELEASE(salvinfo->vnodeInfo[vSmall].handle);
4227 IH_RELEASE(salvinfo->vnodeInfo[vLarge].handle);
4233 ClearROInUseBit(struct VolumeSummary *summary)
4235 IHandle_t *h = summary->volumeInfoHandle;
4236 afs_sfsize_t nBytes;
4238 VolumeDiskData volHeader;
4240 nBytes = IH_IREAD(h, 0, (char *)&volHeader, sizeof(volHeader));
4241 opr_Assert(nBytes == sizeof(volHeader));
4242 opr_Assert(volHeader.stamp.magic == VOLUMEINFOMAGIC);
4243 volHeader.inUse = 0;
4244 volHeader.needsSalvaged = 0;
4245 volHeader.inService = 1;
4246 volHeader.dontSalvage = DONT_SALVAGE;
4248 nBytes = IH_IWRITE(h, 0, (char *)&volHeader, sizeof(volHeader));
4249 opr_Assert(nBytes == sizeof(volHeader));
4254 * Possible delete the volume.
4256 * deleteMe - Always do so, only a partial volume.
4259 MaybeZapVolume(struct SalvInfo *salvinfo, struct InodeSummary *isp,
4260 char *message, int deleteMe, int check)
4262 if (readOnly(isp) || deleteMe) {
4263 if (isp->volSummary && !isp->volSummary->deleted) {
4266 Log("Volume %" AFS_VOLID_FMT " (is only a partial volume--probably an attempt was made to move/restore it when a machine crash occured.\n", afs_printable_VolumeId_lu(isp->volumeId));
4268 Log("It will be deleted on this server (you may find it elsewhere)\n");
4271 Log("Volume %" AFS_VOLID_FMT " needs to be salvaged. Since it is read-only, however,\n", afs_printable_VolumeId_lu(isp->volumeId));
4273 Log("it will be deleted instead. It should be recloned.\n");
4278 char filename[VMAXPATHLEN];
4279 VolumeExternalName_r(isp->volumeId, filename, sizeof(filename));
4280 sprintf(path, "%s" OS_DIRSEP "%s", salvinfo->fileSysPath, filename);
4282 code = VDestroyVolumeDiskHeader(salvinfo->fileSysPartition, isp->volumeId, isp->RWvolumeId);
4284 Log("Error %ld destroying volume disk header for volume %" AFS_VOLID_FMT "\n",
4285 afs_printable_int32_ld(code),
4286 afs_printable_VolumeId_lu(isp->volumeId));
4289 /* make sure we actually delete the header file; ENOENT
4290 * is fine, since VDestroyVolumeDiskHeader probably already
4292 if (unlink(path) && errno != ENOENT) {
4293 Log("Unable to unlink %s (errno = %d)\n", path, errno);
4295 if (salvinfo->useFSYNC) {
4296 AskDelete(salvinfo, isp->volumeId);
4298 isp->volSummary->deleted = 1;
4301 } else if (!check) {
4302 Log("%s salvage was unsuccessful: read-write volume %" AFS_VOLID_FMT "\n", message,
4303 afs_printable_VolumeId_lu(isp->volumeId));
4304 Abort("Salvage of volume %" AFS_VOLID_FMT " aborted\n", afs_printable_VolumeId_lu(isp->volumeId));
4308 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
4310 * Locks a volume on disk for salvaging.
4312 * @param[in] volumeId volume ID to lock
4314 * @return operation status
4316 * @retval -1 volume lock raced with a fileserver restart; all volumes must
4317 * checked out and locked again
4322 LockVolume(struct SalvInfo *salvinfo, VolumeId volumeId)
4327 /* should always be WRITE_LOCK, but keep the lock-type logic all
4328 * in one place, in VVolLockType. Params will be ignored, but
4329 * try to provide what we're logically doing. */
4330 locktype = VVolLockType(V_VOLUPD, 1);
4332 code = VLockVolumeByIdNB(volumeId, salvinfo->fileSysPartition, locktype);
4334 if (code == EBUSY) {
4335 Abort("Someone else appears to be using volume %lu; Aborted\n",
4336 afs_printable_uint32_lu(volumeId));
4338 Abort("Error %ld trying to lock volume %lu; Aborted\n",
4339 afs_printable_int32_ld(code),
4340 afs_printable_uint32_lu(volumeId));
4343 code = FSYNC_VerifyCheckout(volumeId, salvinfo->fileSysPartition->name, FSYNC_VOL_OFF, FSYNC_SALVAGE);
4344 if (code == SYNC_DENIED) {
4345 /* need to retry checking out volumes */
4348 if (code != SYNC_OK) {
4349 Abort("FSYNC_VerifyCheckout failed for volume %lu with code %ld\n",
4350 afs_printable_uint32_lu(volumeId), afs_printable_int32_ld(code));
4353 /* set inUse = programType in the volume header to ensure that nobody
4354 * tries to use this volume again without salvaging, if we somehow crash
4355 * or otherwise exit before finishing the salvage.
4359 struct VolumeHeader header;
4360 struct VolumeDiskHeader diskHeader;
4361 struct VolumeDiskData volHeader;
4363 code = VReadVolumeDiskHeader(volumeId, salvinfo->fileSysPartition, &diskHeader);
4368 DiskToVolumeHeader(&header, &diskHeader);
4370 IH_INIT(h, salvinfo->fileSysDevice, header.parent, header.volumeInfo);
4371 if (IH_IREAD(h, 0, (char*)&volHeader, sizeof(volHeader)) != sizeof(volHeader) ||
4372 volHeader.stamp.magic != VOLUMEINFOMAGIC) {
4378 volHeader.inUse = programType;
4380 /* If we can't re-write the header, bail out and error. We don't
4381 * assert when reading the header, since it's possible the
4382 * header isn't really there (when there's no data associated
4383 * with the volume; we just delete the vol header file in that
4384 * case). But if it's there enough that we can read it, but
4385 * somehow we cannot write to it to signify we're salvaging it,
4386 * we've got a big problem and we cannot continue. */
4387 opr_Verify(IH_IWRITE(h, 0, (char*)&volHeader, sizeof(volHeader))
4388 == sizeof(volHeader));
4395 #endif /* AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL */
4398 AskError(struct SalvInfo *salvinfo, VolumeId volumeId)
4400 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
4402 code = FSYNC_VolOp(volumeId, salvinfo->fileSysPartition->name,
4403 FSYNC_VOL_FORCE_ERROR, FSYNC_WHATEVER, NULL);
4404 if (code != SYNC_OK) {
4405 Log("AskError: failed to force volume %lu into error state; "
4406 "SYNC error code %ld (%s)\n", (long unsigned)volumeId,
4407 (long)code, SYNC_res2string(code));
4409 #endif /* AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL */
4413 AskOffline(struct SalvInfo *salvinfo, VolumeId volumeId)
4418 memset(&res, 0, sizeof(res));
4420 for (i = 0; i < 3; i++) {
4421 code = FSYNC_VolOp(volumeId, salvinfo->fileSysPartition->name,
4422 FSYNC_VOL_OFF, FSYNC_SALVAGE, &res);
4424 if (code == SYNC_OK) {
4426 } else if (code == SYNC_DENIED) {
4428 Log("AskOffline: file server denied offline request; a general salvage may be required.\n");
4430 Log("AskOffline: file server denied offline request; a general salvage is required.\n");
4431 Abort("Salvage aborted\n");
4432 } else if (code == SYNC_BAD_COMMAND) {
4433 Log("AskOffline: fssync protocol mismatch (bad command word '%d'); salvage aborting.\n",
4436 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
4437 Log("AskOffline: please make sure dafileserver, davolserver, salvageserver and dasalvager binaries are same version.\n");
4439 Log("AskOffline: fileserver is DAFS but we are not.\n");
4442 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
4443 Log("AskOffline: fileserver is not DAFS but we are.\n");
4445 Log("AskOffline: please make sure fileserver, volserver and salvager binaries are same version.\n");
4448 Abort("Salvage aborted\n");
4451 Log("AskOffline: request for fileserver to take volume offline failed; trying again...\n");
4452 FSYNC_clientFinis();
4456 if (code != SYNC_OK) {
4457 Log("AskOffline: request for fileserver to take volume offline failed; salvage aborting.\n");
4458 Abort("Salvage aborted\n");
4462 /* don't want to pass around state; remember it here */
4463 static int isDAFS = -1;
4468 afs_int32 code = 1, i;
4470 /* we don't care if we race. the answer shouldn't change */
4474 memset(&res, 0, sizeof(res));
4476 for (i = 0; code && i < 3; i++) {
4477 code = FSYNC_VolOp(0, NULL, FSYNC_VOL_LISTVOLUMES, FSYNC_SALVAGE, &res);
4479 Log("AskDAFS: FSYNC_VOL_LISTVOLUMES failed with code %ld reason "
4480 "%ld (%s); trying again...\n", (long)code, (long)res.hdr.reason,
4481 FSYNC_reason2string(res.hdr.reason));
4482 FSYNC_clientFinis();
4488 Log("AskDAFS: could not determine DAFS-ness, assuming not DAFS\n");
4492 if ((res.hdr.flags & SYNC_FLAG_DAFS_EXTENSIONS)) {
4502 MaybeAskOnline(struct SalvInfo *salvinfo, VolumeId volumeId)
4504 struct VolumeDiskHeader diskHdr;
4506 code = VReadVolumeDiskHeader(volumeId, salvinfo->fileSysPartition, &diskHdr);
4508 /* volume probably does not exist; no need to bring back online */
4511 AskOnline(salvinfo, volumeId);
4515 AskOnline(struct SalvInfo *salvinfo, VolumeId volumeId)
4519 for (i = 0; i < 3; i++) {
4520 code = FSYNC_VolOp(volumeId, salvinfo->fileSysPartition->name,
4521 FSYNC_VOL_ON, FSYNC_WHATEVER, NULL);
4523 if (code == SYNC_OK) {
4525 } else if (code == SYNC_DENIED) {
4526 Log("AskOnline: file server denied online request to volume %" AFS_VOLID_FMT " partition %s; trying again...\n", afs_printable_VolumeId_lu(volumeId), salvinfo->fileSysPartition->name);
4527 } else if (code == SYNC_BAD_COMMAND) {
4528 Log("AskOnline: fssync protocol mismatch (bad command word '%d')\n",
4530 Log("AskOnline: please make sure file server binaries are same version.\n");
4534 Log("AskOnline: request for fileserver to put volume online failed; trying again...\n");
4535 FSYNC_clientFinis();
4542 AskDelete(struct SalvInfo *salvinfo, VolumeId volumeId)
4547 for (i = 0; i < 3; i++) {
4548 memset(&res, 0, sizeof(res));
4549 code = FSYNC_VolOp(volumeId, salvinfo->fileSysPartition->name,
4550 FSYNC_VOL_DONE, FSYNC_SALVAGE, &res);
4552 if (code == SYNC_OK) {
4554 } else if (code == SYNC_DENIED) {
4555 Log("AskOnline: file server denied DONE request to volume %" AFS_VOLID_FMT " partition %s; trying again...\n", afs_printable_VolumeId_lu(volumeId), salvinfo->fileSysPartition->name);
4556 } else if (code == SYNC_BAD_COMMAND) {
4557 Log("AskOnline: fssync protocol mismatch (bad command word '%d')\n",
4560 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
4561 Log("AskOnline: please make sure dafileserver, davolserver, salvageserver and dasalvager binaries are same version.\n");
4563 Log("AskOnline: fileserver is DAFS but we are not.\n");
4566 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
4567 Log("AskOnline: fileserver is not DAFS but we are.\n");
4569 Log("AskOnline: please make sure fileserver, volserver and salvager binaries are same version.\n");
4573 } else if (code == SYNC_FAILED &&
4574 (res.hdr.reason == FSYNC_UNKNOWN_VOLID ||
4575 res.hdr.reason == FSYNC_WRONG_PART)) {
4576 /* volume is already effectively 'deleted' */
4580 Log("AskOnline: request for fileserver to delete volume failed; trying again...\n");
4581 FSYNC_clientFinis();
4588 CopyInode(Device device, Inode inode1, Inode inode2, int rwvolume)
4590 /* Volume parameter is passed in case iopen is upgraded in future to
4591 * require a volume Id to be passed
4594 IHandle_t *srcH, *destH;
4595 FdHandle_t *srcFdP, *destFdP;
4597 afs_foff_t size = 0;
4599 IH_INIT(srcH, device, rwvolume, inode1);
4600 srcFdP = IH_OPEN(srcH);
4601 opr_Assert(srcFdP != NULL);
4602 IH_INIT(destH, device, rwvolume, inode2);
4603 destFdP = IH_OPEN(destH);
4604 while ((nBytes = FDH_PREAD(srcFdP, buf, sizeof(buf), size)) > 0) {
4605 opr_Verify(FDH_PWRITE(destFdP, buf, nBytes, size) == nBytes);
4608 opr_Assert(nBytes == 0);
4609 FDH_REALLYCLOSE(srcFdP);
4610 FDH_REALLYCLOSE(destFdP);
4617 PrintInodeList(struct SalvInfo *salvinfo)
4619 struct ViceInodeInfo *ip;
4620 struct ViceInodeInfo *buf;
4623 afs_sfsize_t st_size;
4625 st_size = OS_SIZE(salvinfo->inodeFd);
4626 opr_Assert(st_size >= 0);
4627 buf = malloc(st_size);
4628 opr_Assert(buf != NULL);
4629 nInodes = st_size / sizeof(struct ViceInodeInfo);
4630 opr_Verify(OS_READ(salvinfo->inodeFd, buf, st_size) == st_size);
4631 for (ip = buf; nInodes--; ip++) {
4632 Log("Inode:%s, linkCount=%d, size=%#llx, p=(%" AFS_VOLID_FMT ",%u,%u,%u)\n", /* VolumeId in param */
4633 PrintInode(stmp, ip->inodeNumber), ip->linkCount,
4634 (afs_uintmax_t) ip->byteCount,
4635 afs_printable_VolumeId_lu(ip->u.param[0]), ip->u.param[1],
4636 ip->u.param[2], ip->u.param[3]);
4642 PrintInodeSummary(struct SalvInfo *salvinfo)
4645 struct InodeSummary *isp;
4647 for (i = 0; i < salvinfo->nVolumesInInodeFile; i++) {
4648 isp = &salvinfo->inodeSummary[i];
4649 Log("VID:%" AFS_VOLID_FMT ", RW:%" AFS_VOLID_FMT ", index:%d, nInodes:%d, nSpecialInodes:%d, maxUniquifier:%u, volSummary\n", afs_printable_VolumeId_lu(isp->volumeId), afs_printable_VolumeId_lu(isp->RWvolumeId), isp->index, isp->nInodes, isp->nSpecialInodes, isp->maxUniquifier);
4659 opr_Assert(0); /* Fork is never executed in the NT code path */
4663 #ifdef AFS_DEMAND_ATTACH_FS
4664 if ((f == 0) && (programType == salvageServer)) {
4665 /* we are a salvageserver child */
4666 #ifdef FSSYNC_BUILD_CLIENT
4667 VChildProcReconnectFS_r();
4669 #ifdef SALVSYNC_BUILD_CLIENT
4673 #endif /* AFS_DEMAND_ATTACH_FS */
4674 #endif /* !AFS_NT40_ENV */
4684 #ifdef AFS_DEMAND_ATTACH_FS
4685 if (programType == salvageServer) {
4686 /* release all volume locks before closing down our SYNC channels.
4687 * the fileserver may try to online volumes we have checked out when
4688 * we close down FSSYNC, so we should make sure we don't have those
4689 * volumes locked when it does */
4690 struct DiskPartition64 *dp;
4692 for (i = 0; i <= VOLMAXPARTS; i++) {
4693 dp = VGetPartitionById(i, 0);
4695 VLockFileReinit(&dp->volLockFile);
4698 # ifdef SALVSYNC_BUILD_CLIENT
4701 # ifdef FSSYNC_BUILD_CLIENT
4705 #endif /* AFS_DEMAND_ATTACH_FS */
4708 if (main_thread != pthread_self())
4709 pthread_exit((void *)code);
4722 pid = wait(&status);
4723 opr_Assert(pid != -1);
4724 if (WCOREDUMP(status))
4725 Log("\"%s\" core dumped!\n", prog);
4726 if (WIFSIGNALED(status) != 0 || WEXITSTATUS(status) != 0)
4732 TimeStamp(time_t clock, int precision)
4735 static char timestamp[20];
4736 lt = localtime(&clock);
4738 (void)strftime(timestamp, 20, "%m/%d/%Y %H:%M:%S", lt);
4740 (void)strftime(timestamp, 20, "%m/%d/%Y %H:%M", lt);
4745 CheckLogFile(char * log_path)
4747 char oldSlvgLog[AFSDIR_PATH_MAX];
4749 #ifndef AFS_NT40_ENV
4756 strcpy(oldSlvgLog, log_path);
4757 strcat(oldSlvgLog, ".old");
4759 rk_rename(log_path, oldSlvgLog);
4760 logFile = afs_fopen(log_path, "a");
4762 if (!logFile) { /* still nothing, use stdout */
4766 #ifndef AFS_NAMEI_ENV
4767 AFS_DEBUG_IOPS_LOG(logFile);
4772 #ifndef AFS_NT40_ENV
4774 TimeStampLogFile(char * log_path)
4776 char stampSlvgLog[AFSDIR_PATH_MAX];
4781 lt = localtime(&now);
4782 snprintf(stampSlvgLog, sizeof stampSlvgLog,
4783 "%s.%04d-%02d-%02d.%02d:%02d:%02d", log_path,
4784 lt->tm_year + 1900, lt->tm_mon + 1, lt->tm_mday, lt->tm_hour,
4785 lt->tm_min, lt->tm_sec);
4787 /* try to link the logfile to a timestamped filename */
4788 /* if it fails, oh well, nothing we can do */
4789 link(log_path, stampSlvgLog);
4798 #ifndef AFS_NT40_ENV
4800 printf("Can't show log since using syslog.\n");
4811 logFile = afs_fopen(AFSDIR_SERVER_SLVGLOG_FILEPATH, "r");
4814 printf("Can't read %s, exiting\n", AFSDIR_SERVER_SLVGLOG_FILEPATH);
4817 while (fgets(line, sizeof(line), logFile))
4824 Log(const char *format, ...)
4830 va_start(args, format);
4831 vsnprintf(tmp, sizeof tmp, format, args);
4833 #ifndef AFS_NT40_ENV
4835 syslog(LOG_INFO, "%s", tmp);
4839 gettimeofday(&now, NULL);
4840 fprintf(logFile, "%s %s", TimeStamp(now.tv_sec, 1), tmp);
4846 Abort(const char *format, ...)
4851 va_start(args, format);
4852 vsnprintf(tmp, sizeof tmp, format, args);
4854 #ifndef AFS_NT40_ENV
4856 syslog(LOG_INFO, "%s", tmp);
4860 fprintf(logFile, "%s", tmp);
4872 ToString(const char *s)
4876 opr_Assert(p != NULL);
4880 /* Remove the FORCESALVAGE file */
4882 RemoveTheForce(char *path)
4885 struct afs_stat_st force; /* so we can use afs_stat to find it */
4886 strcpy(target,path);
4887 strcat(target,"/FORCESALVAGE");
4888 if (!Testing && ForceSalvage) {
4889 if (afs_stat(target,&force) == 0) unlink(target);
4893 #ifndef AFS_AIX32_ENV
4895 * UseTheForceLuke - see if we can use the force
4898 UseTheForceLuke(char *path)
4900 struct afs_stat_st force;
4902 strcpy(target,path);
4903 strcat(target,"/FORCESALVAGE");
4905 return (afs_stat(target, &force) == 0);
4909 * UseTheForceLuke - see if we can use the force
4912 * The VRMIX fsck will not muck with the filesystem it is supposedly
4913 * fixing and create a "FORCESALVAGE" file (by design). Instead, we
4914 * muck directly with the root inode, which is within the normal
4916 * ListViceInodes() has a side effect of setting ForceSalvage if
4917 * it detects a need, based on root inode examination.
4920 UseTheForceLuke(char *path)
4923 return 0; /* sorry OB1 */
4928 /* NT support routines */
4930 static char execpathname[MAX_PATH];
4932 nt_SalvagePartition(char *partName, int jobn)
4937 if (!*execpathname) {
4938 n = GetModuleFileName(NULL, execpathname, MAX_PATH - 1);
4939 if (!n || n == 1023)
4942 job.cj_magic = SALVAGER_MAGIC;
4943 job.cj_number = jobn;
4944 (void)strcpy(job.cj_part, partName);
4945 pid = (int)spawnprocveb(execpathname, save_args, NULL, &job, sizeof(job));
4950 nt_SetupPartitionSalvage(void *datap, int len)
4952 childJob_t *jobp = (childJob_t *) datap;
4953 char logname[AFSDIR_PATH_MAX];
4955 if (len != sizeof(childJob_t))
4957 if (jobp->cj_magic != SALVAGER_MAGIC)
4962 (void)sprintf(logname, "%s.%d", AFSDIR_SERVER_SLVGLOG_FILEPATH,
4964 logFile = afs_fopen(logname, "w");
4972 #endif /* AFS_NT40_ENV */