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 #include <afs/afsint.h>
104 #if !defined(AFS_SGI_ENV) && !defined(AFS_NT40_ENV)
105 #if defined(AFS_VFSINCL_ENV)
106 #include <sys/vnode.h>
108 #include <sys/fs/ufs_inode.h>
110 #if defined(AFS_DARWIN_ENV) || defined(AFS_XBSD_ENV)
111 #include <ufs/ufs/dinode.h>
112 #include <ufs/ffs/fs.h>
114 #include <ufs/inode.h>
117 #else /* AFS_VFSINCL_ENV */
119 #include <ufs/inode.h>
120 #else /* AFS_OSF_ENV */
121 #if !defined(AFS_LINUX20_ENV) && !defined(AFS_XBSD_ENV) && !defined(AFS_DARWIN_ENV)
122 #include <sys/inode.h>
125 #endif /* AFS_VFSINCL_ENV */
126 #endif /* AFS_SGI_ENV */
129 #include <sys/lockf.h>
132 #include <checklist.h>
134 #if defined(AFS_SGI_ENV)
137 #if defined(AFS_SUN_ENV) || defined(AFS_SUN5_ENV)
139 #include <sys/mnttab.h>
140 #include <sys/mntent.h>
145 #endif /* AFS_SGI_ENV */
146 #endif /* AFS_HPUX_ENV */
150 #include <afs/osi_inode.h>
154 #include <afs/afsutil.h>
155 #include <afs/fileutil.h>
160 #include <afs/afssyscalls.h>
164 #include "partition.h"
165 #include "daemon_com.h"
166 #include "daemon_com_inline.h"
168 #include "fssync_inline.h"
169 #include "volume_inline.h"
170 #include "salvsync.h"
171 #include "viceinode.h"
173 #include "volinodes.h" /* header magic number, etc. stuff */
174 #include "vol-salvage.h"
176 #include "vol_internal.h"
178 #include <afs/prs_fs.h>
180 #ifdef FSSYNC_BUILD_CLIENT
181 #include "vg_cache.h"
189 extern void *calloc();
191 static char *TimeStamp(time_t clock, int precision);
194 int debug; /* -d flag */
195 extern int Testing; /* -n flag */
196 int ListInodeOption; /* -i flag */
197 int ShowRootFiles; /* -r flag */
198 int RebuildDirs; /* -sal flag */
199 int Parallel = 4; /* -para X flag */
200 int PartsPerDisk = 8; /* Salvage up to 8 partitions on same disk sequentially */
201 int forceR = 0; /* -b flag */
202 int ShowLog = 0; /* -showlog flag */
203 int ShowSuid = 0; /* -showsuid flag */
204 int ShowMounts = 0; /* -showmounts flag */
205 int orphans = ORPH_IGNORE; /* -orphans option */
210 int useSyslog = 0; /* -syslog flag */
211 int useSyslogFacility = LOG_DAEMON; /* -syslogfacility option */
220 #define MAXPARALLEL 32
222 int OKToZap; /* -o flag */
223 int ForceSalvage; /* If salvage should occur despite the DONT_SALVAGE flag
224 * in the volume header */
226 FILE *logFile = 0; /* one of {/usr/afs/logs,/vice/file}/SalvageLog */
228 #define ROOTINODE 2 /* Root inode of a 4.2 Unix file system
231 * information that is 'global' to a particular salvage job.
234 Device fileSysDevice; /**< The device number of the current partition
236 char fileSysPath[9]; /**< The path of the mounted partition currently
237 * being salvaged, i.e. the directory containing
238 * the volume headers */
239 char *fileSysPathName; /**< NT needs this to make name pretty log. */
240 IHandle_t *VGLinkH; /**< Link handle for current volume group. */
241 int VGLinkH_cnt; /**< # of references to lnk handle. */
242 struct DiskPartition64 *fileSysPartition; /**< Partition being salvaged */
245 char *fileSysDeviceName; /**< The block device where the file system being
246 * salvaged was mounted */
247 char *filesysfulldev;
249 int VolumeChanged; /**< Set by any routine which would change the
250 * volume in a way which would require callbacks
251 * to be broken if the volume was put back on
252 * on line by an active file server */
254 VolumeDiskData VolInfo; /**< A copy of the last good or salvaged volume
255 * header dealt with */
257 int nVolumesInInodeFile; /**< Number of read-write volumes summarized */
258 FD_t inodeFd; /**< File descriptor for inode file */
260 struct VolumeSummary *volumeSummaryp; /**< Holds all the volumes in a part */
261 int nVolumes; /**< Number of volumes (read-write and read-only)
262 * in volume summary */
263 struct InodeSummary *inodeSummary; /**< contains info on all the relevant
266 struct VnodeInfo vnodeInfo[nVNODECLASSES]; /**< contains info on all of the
267 * vnodes in the volume that
268 * we are currently looking
270 int useFSYNC; /**< 0 if the fileserver is unavailable; 1 if we should try
271 * to contact the fileserver over FSYNC */
278 /* Forward declarations */
279 static int IsVnodeOrphaned(struct SalvInfo *salvinfo, VnodeId vnode);
280 static int AskVolumeSummary(struct SalvInfo *salvinfo,
281 VolumeId singleVolumeNumber);
282 static void MaybeAskOnline(struct SalvInfo *salvinfo, VolumeId volumeId);
283 static void AskError(struct SalvInfo *salvinfo, VolumeId volumeId);
285 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
286 static int LockVolume(struct SalvInfo *salvinfo, VolumeId volumeId);
287 #endif /* AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL */
289 /* Uniquifier stored in the Inode */
294 return (u & 0x3fffff);
296 #if defined(AFS_SGI_EXMAG)
297 return (u & SGI_UNIQMASK);
300 #endif /* AFS_SGI_EXMAG */
307 if (aerror == EPERM || aerror == ENXIO || aerror == ENOENT)
309 return 0; /* otherwise may be transient, e.g. EMFILE */
314 char *save_args[MAX_ARGS];
316 extern pthread_t main_thread;
317 childJob_t myjob = { SALVAGER_MAGIC, NOT_CHILD, "" };
321 * Get the salvage lock if not already held. Hold until process exits.
323 * @param[in] locktype READ_LOCK or WRITE_LOCK
326 _ObtainSalvageLock(int locktype)
328 struct VLockFile salvageLock;
333 VLockFileInit(&salvageLock, AFSDIR_SERVER_SLVGLOCK_FILEPATH);
335 code = VLockFileLock(&salvageLock, offset, locktype, nonblock);
338 "salvager: There appears to be another salvager running! "
343 "salvager: Error %d trying to acquire salvage lock! "
349 ObtainSalvageLock(void)
351 _ObtainSalvageLock(WRITE_LOCK);
354 ObtainSharedSalvageLock(void)
356 _ObtainSalvageLock(READ_LOCK);
360 #ifdef AFS_SGI_XFS_IOPS_ENV
361 /* Check if the given partition is mounted. For XFS, the root inode is not a
362 * constant. So we check the hard way.
365 IsPartitionMounted(char *part)
368 struct mntent *mntent;
370 osi_Assert(mntfp = setmntent(MOUNTED, "r"));
371 while (mntent = getmntent(mntfp)) {
372 if (!strcmp(part, mntent->mnt_dir))
377 return mntent ? 1 : 1;
380 /* Check if the given inode is the root of the filesystem. */
381 #ifndef AFS_SGI_XFS_IOPS_ENV
383 IsRootInode(struct afs_stat_st *status)
386 * The root inode is not a fixed value in XFS partitions. So we need to
387 * see if the partition is in the list of mounted partitions. This only
388 * affects the SalvageFileSys path, so we check there.
390 return (status->st_ino == ROOTINODE);
395 #ifndef AFS_NAMEI_ENV
396 /* We don't want to salvage big files filesystems, since we can't put volumes on
400 CheckIfBigFilesFS(char *mountPoint, char *devName)
402 struct superblock fs;
405 if (strncmp(devName, "/dev/", 5)) {
406 (void)sprintf(name, "/dev/%s", devName);
408 (void)strcpy(name, devName);
411 if (ReadSuper(&fs, name) < 0) {
412 Log("Unable to read superblock. Not salvaging partition %s.\n",
416 if (IsBigFilesFileSystem(&fs)) {
417 Log("Partition %s is a big files filesystem, not salvaging.\n",
427 #define HDSTR "\\Device\\Harddisk"
428 #define HDLEN (sizeof(HDSTR)-1) /* Length of "\Device\Harddisk" */
430 SameDisk(struct DiskPartition64 *p1, struct DiskPartition64 *p2)
436 static int dowarn = 1;
438 if (!QueryDosDevice(p1->devName, res1, RES_LEN - 1))
440 if (strncmp(res1, HDSTR, HDLEN)) {
443 Log("WARNING: QueryDosDevice is returning %s, not %s for %s\n",
444 res1, HDSTR, p1->devName);
447 if (!QueryDosDevice(p2->devName, res2, RES_LEN - 1))
449 if (strncmp(res2, HDSTR, HDLEN)) {
452 Log("WARNING: QueryDosDevice is returning %s, not %s for %s\n",
453 res2, HDSTR, p2->devName);
457 return (0 == _strnicmp(res1, res2, RES_LEN - 1));
460 #define SameDisk(P1, P2) ((P1)->device/PartsPerDisk == (P2)->device/PartsPerDisk)
463 /* This assumes that two partitions with the same device number divided by
464 * PartsPerDisk are on the same disk.
467 SalvageFileSysParallel(struct DiskPartition64 *partP)
470 struct DiskPartition64 *partP;
471 int pid; /* Pid for this job */
472 int jobnumb; /* Log file job number */
473 struct job *nextjob; /* Next partition on disk to salvage */
475 static struct job *jobs[MAXPARALLEL] = { 0 }; /* Need to zero this */
476 struct job *thisjob = 0;
477 static int numjobs = 0;
478 static int jobcount = 0;
484 char logFileName[256];
488 /* We have a partition to salvage. Copy it into thisjob */
489 thisjob = (struct job *)malloc(sizeof(struct job));
491 Log("Can't salvage '%s'. Not enough memory\n", partP->name);
494 memset(thisjob, 0, sizeof(struct job));
495 thisjob->partP = partP;
496 thisjob->jobnumb = jobcount;
498 } else if (jobcount == 0) {
499 /* We are asking to wait for all jobs (partp == 0), yet we never
502 Log("No file system partitions named %s* found; not salvaged\n",
503 VICE_PARTITION_PREFIX);
507 if (debug || Parallel == 1) {
509 SalvageFileSys(thisjob->partP, 0);
516 /* Check to see if thisjob is for a disk that we are already
517 * salvaging. If it is, link it in as the next job to do. The
518 * jobs array has 1 entry per disk being salvages. numjobs is
519 * the total number of disks currently being salvaged. In
520 * order to keep thejobs array compact, when a disk is
521 * completed, the hightest element in the jobs array is moved
522 * down to now open slot.
524 for (j = 0; j < numjobs; j++) {
525 if (SameDisk(jobs[j]->partP, thisjob->partP)) {
526 /* On same disk, add it to this list and return */
527 thisjob->nextjob = jobs[j]->nextjob;
528 jobs[j]->nextjob = thisjob;
535 /* Loop until we start thisjob or until all existing jobs are finished */
536 while (thisjob || (!partP && (numjobs > 0))) {
537 startjob = -1; /* No new job to start */
539 if ((numjobs >= Parallel) || (!partP && (numjobs > 0))) {
540 /* Either the max jobs are running or we have to wait for all
541 * the jobs to finish. In either case, we wait for at least one
542 * job to finish. When it's done, clean up after it.
544 pid = wait(&wstatus);
545 osi_Assert(pid != -1);
546 for (j = 0; j < numjobs; j++) { /* Find which job it is */
547 if (pid == jobs[j]->pid)
550 osi_Assert(j < numjobs);
551 if (WCOREDUMP(wstatus)) { /* Say if the job core dumped */
552 Log("Salvage of %s core dumped!\n", jobs[j]->partP->name);
555 numjobs--; /* job no longer running */
556 oldjob = jobs[j]; /* remember */
557 jobs[j] = jobs[j]->nextjob; /* Step to next part on same disk */
558 free(oldjob); /* free the old job */
560 /* If there is another partition on the disk to salvage, then
561 * say we will start it (startjob). If not, then put thisjob there
562 * and say we will start it.
564 if (jobs[j]) { /* Another partitions to salvage */
565 startjob = j; /* Will start it */
566 } else { /* There is not another partition to salvage */
568 jobs[j] = thisjob; /* Add thisjob */
570 startjob = j; /* Will start it */
572 jobs[j] = jobs[numjobs]; /* Move last job up to this slot */
573 startjob = -1; /* Don't start it - already running */
577 /* We don't have to wait for a job to complete */
579 jobs[numjobs] = thisjob; /* Add this job */
581 startjob = numjobs; /* Will start it */
585 /* Start up a new salvage job on a partition in job slot "startjob" */
586 if (startjob != -1) {
588 Log("Starting salvage of file system partition %s\n",
589 jobs[startjob]->partP->name);
591 /* For NT, we not only fork, but re-exec the salvager. Pass in the
592 * commands and pass the child job number via the data path.
595 nt_SalvagePartition(jobs[startjob]->partP->name,
596 jobs[startjob]->jobnumb);
597 jobs[startjob]->pid = pid;
602 jobs[startjob]->pid = pid;
608 for (fd = 0; fd < 16; fd++)
615 openlog("salvager", LOG_PID, useSyslogFacility);
619 snprintf(logFileName, sizeof logFileName, "%s.%d",
620 AFSDIR_SERVER_SLVGLOG_FILEPATH,
621 jobs[startjob]->jobnumb);
622 logFile = afs_fopen(logFileName, "w");
627 SalvageFileSys1(jobs[startjob]->partP, 0);
632 } /* while ( thisjob || (!partP && numjobs > 0) ) */
634 /* If waited for all jobs to complete, now collect log files and return */
636 if (!useSyslog) /* if syslogging - no need to collect */
639 for (i = 0; i < jobcount; i++) {
640 snprintf(logFileName, sizeof logFileName, "%s.%d",
641 AFSDIR_SERVER_SLVGLOG_FILEPATH, i);
642 if ((passLog = afs_fopen(logFileName, "r"))) {
643 while (fgets(buf, sizeof(buf), passLog)) {
648 (void)unlink(logFileName);
657 SalvageFileSys(struct DiskPartition64 *partP, VolumeId singleVolumeNumber)
659 if (!canfork || debug || Fork() == 0) {
660 SalvageFileSys1(partP, singleVolumeNumber);
661 if (canfork && !debug) {
666 Wait("SalvageFileSys");
670 get_DevName(char *pbuffer, char *wpath)
672 char pbuf[128], *ptr;
673 strcpy(pbuf, pbuffer);
674 ptr = (char *)strrchr(pbuf, OS_DIRSEPC);
680 ptr = (char *)strrchr(pbuffer, OS_DIRSEPC);
682 strcpy(pbuffer, ptr + 1);
689 SalvageFileSys1(struct DiskPartition64 *partP, VolumeId singleVolumeNumber)
692 char inodeListPath[256];
693 FD_t inodeFile = INVALID_FD;
694 static char tmpDevName[100];
695 static char wpath[100];
696 struct VolumeSummary *vsp, *esp;
700 struct SalvInfo l_salvinfo;
701 struct SalvInfo *salvinfo = &l_salvinfo;
704 memset(salvinfo, 0, sizeof(*salvinfo));
707 if (inodeFile != INVALID_FD) {
709 inodeFile = INVALID_FD;
711 if (tries > VOL_MAX_CHECKOUT_RETRIES) {
712 Abort("Raced too many times with fileserver restarts while trying to "
713 "checkout/lock volumes; Aborted\n");
715 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
717 /* unlock all previous volume locks, since we're about to lock them
719 VLockFileReinit(&partP->volLockFile);
721 #endif /* AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL */
723 salvinfo->fileSysPartition = partP;
724 salvinfo->fileSysDevice = salvinfo->fileSysPartition->device;
725 salvinfo->fileSysPathName = VPartitionPath(salvinfo->fileSysPartition);
728 /* Opendir can fail on "C:" but not on "C:\" if C is empty! */
729 (void)sprintf(salvinfo->fileSysPath, "%s" OS_DIRSEP, salvinfo->fileSysPathName);
730 name = partP->devName;
732 strlcpy(salvinfo->fileSysPath, salvinfo->fileSysPathName, sizeof(salvinfo->fileSysPath));
733 strcpy(tmpDevName, partP->devName);
734 name = get_DevName(tmpDevName, wpath);
735 salvinfo->fileSysDeviceName = name;
736 salvinfo->filesysfulldev = wpath;
739 if (singleVolumeNumber) {
740 #if !(defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL))
741 /* only non-DAFS locks the partition when salvaging a single volume;
742 * DAFS will lock the individual volumes in the VG */
743 VLockPartition(partP->name);
744 #endif /* !(AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL) */
748 /* salvageserver already setup fssync conn for us */
749 if ((programType != salvageServer) && !VConnectFS()) {
750 Abort("Couldn't connect to file server\n");
753 salvinfo->useFSYNC = 1;
754 AskOffline(salvinfo, singleVolumeNumber);
755 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
756 if (LockVolume(salvinfo, singleVolumeNumber)) {
759 #endif /* AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL */
762 salvinfo->useFSYNC = 0;
763 VLockPartition(partP->name);
767 ForceSalvage = UseTheForceLuke(salvinfo->fileSysPath);
770 Log("SALVAGING FILE SYSTEM PARTITION %s (device=%s%s)\n",
771 partP->name, name, (Testing ? "(READONLY mode)" : ""));
773 Log("***Forced salvage of all volumes on this partition***\n");
778 * Remove any leftover /vicepa/salvage.inodes.* or /vicepa/salvage.temp.*
785 osi_Assert((dirp = opendir(salvinfo->fileSysPath)) != NULL);
786 while ((dp = readdir(dirp))) {
787 if (!strncmp(dp->d_name, "salvage.inodes.", 15)
788 || !strncmp(dp->d_name, "salvage.temp.", 13)) {
790 Log("Removing old salvager temp files %s\n", dp->d_name);
791 strcpy(npath, salvinfo->fileSysPath);
792 strcat(npath, OS_DIRSEP);
793 strcat(npath, dp->d_name);
799 tdir = (tmpdir ? tmpdir : salvinfo->fileSysPath);
801 (void)_putenv("TMP="); /* If "TMP" is set, then that overrides tdir. */
802 (void)strncpy(inodeListPath, _tempnam(tdir, "salvage.inodes."), 255);
804 snprintf(inodeListPath, 255, "%s" OS_DIRSEP "salvage.inodes.%s.%d", tdir, name,
808 inodeFile = OS_OPEN(inodeListPath, O_RDWR|O_TRUNC|O_CREAT, 0666);
809 if (inodeFile == INVALID_FD) {
810 Abort("Error %d when creating inode description file %s; not salvaged\n", errno, inodeListPath);
813 /* Using nt_unlink here since we're really using the delete on close
814 * semantics of unlink. In most places in the salvager, we really do
815 * mean to unlink the file at that point. Those places have been
816 * modified to actually do that so that the NT crt can be used there.
818 * jaltman - On NT delete on close cannot be applied to a file while the
819 * process has an open file handle that does not have DELETE file
820 * access and FILE_SHARE_DELETE. fopen() calls CreateFile() without
821 * delete privileges. As a result the nt_unlink() call will always
824 code = nt_unlink(inodeListPath);
826 code = unlink(inodeListPath);
829 Log("Error %d when trying to unlink %s\n", errno, inodeListPath);
832 if (GetInodeSummary(salvinfo, inodeFile, singleVolumeNumber) < 0) {
836 salvinfo->inodeFd = inodeFile;
837 if (salvinfo->inodeFd == INVALID_FD)
838 Abort("Temporary file %s is missing...\n", inodeListPath);
839 OS_SEEK(salvinfo->inodeFd, 0L, SEEK_SET);
840 if (ListInodeOption) {
841 PrintInodeList(salvinfo);
842 if (singleVolumeNumber) {
843 /* We've checked out the volume from the fileserver, and we need
844 * to give it back. We don't know if the volume exists or not,
845 * so we don't know whether to AskOnline or not. Try to determine
846 * if the volume exists by trying to read the volume header, and
847 * AskOnline if it is readable. */
848 MaybeAskOnline(salvinfo, singleVolumeNumber);
852 /* enumerate volumes in the partition.
853 * figure out sets of read-only + rw volumes.
854 * salvage each set, read-only volumes first, then read-write.
855 * Fix up inodes on last volume in set (whether it is read-write
858 if (GetVolumeSummary(salvinfo, singleVolumeNumber)) {
862 if (singleVolumeNumber) {
863 /* If we delete a volume during the salvage, we indicate as such by
864 * setting the volsummary->deleted field. We need to know if we
865 * deleted a volume or not in order to know which volumes to bring
866 * back online after the salvage. If we fork, we will lose this
867 * information, since volsummary->deleted will not get set in the
868 * parent. So, don't fork. */
872 for (i = j = 0, vsp = salvinfo->volumeSummaryp, esp = vsp + salvinfo->nVolumes;
873 i < salvinfo->nVolumesInInodeFile; i = j) {
874 VolumeId rwvid = salvinfo->inodeSummary[i].RWvolumeId;
876 j < salvinfo->nVolumesInInodeFile && salvinfo->inodeSummary[j].RWvolumeId == rwvid;
878 VolumeId vid = salvinfo->inodeSummary[j].volumeId;
879 struct VolumeSummary *tsp;
880 /* Scan volume list (from partition root directory) looking for the
881 * current rw volume number in the volume list from the inode scan.
882 * If there is one here that is not in the inode volume list,
884 for (; vsp < esp && (vsp->header.parent < rwvid); vsp++) {
886 DeleteExtraVolumeHeaderFile(salvinfo, vsp);
888 /* Now match up the volume summary info from the root directory with the
889 * entry in the volume list obtained from scanning inodes */
890 salvinfo->inodeSummary[j].volSummary = NULL;
891 for (tsp = vsp; tsp < esp && (tsp->header.parent == rwvid); tsp++) {
892 if (tsp->header.id == vid) {
893 salvinfo->inodeSummary[j].volSummary = tsp;
899 /* Salvage the group of volumes (several read-only + 1 read/write)
900 * starting with the current read-only volume we're looking at.
903 nt_SalvageVolumeGroup(salvinfo, &salvinfo->inodeSummary[i], j - i);
905 DoSalvageVolumeGroup(salvinfo, &salvinfo->inodeSummary[i], j - i);
906 #endif /* AFS_NT40_ENV */
910 /* Delete any additional volumes that were listed in the partition but which didn't have any corresponding inodes */
911 for (; vsp < esp; vsp++) {
913 DeleteExtraVolumeHeaderFile(salvinfo, vsp);
916 if (!singleVolumeNumber) /* Remove the FORCESALVAGE file */
917 RemoveTheForce(salvinfo->fileSysPath);
919 if (!Testing && singleVolumeNumber) {
921 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
922 /* unlock vol headers so the fs can attach them when we AskOnline */
923 VLockFileReinit(&salvinfo->fileSysPartition->volLockFile);
924 #endif /* AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL */
926 /* Step through the volumeSummary list and set all volumes on-line.
927 * Most volumes were taken off-line in GetVolumeSummary.
928 * If a volume was deleted, don't tell the fileserver anything, since
929 * we already told the fileserver the volume was deleted back when we
930 * we destroyed the volume header.
931 * Also, make sure we bring the singleVolumeNumber back online first.
934 for (j = 0; j < salvinfo->nVolumes; j++) {
935 if (salvinfo->volumeSummaryp[j].header.id == singleVolumeNumber) {
937 if (!salvinfo->volumeSummaryp[j].deleted) {
938 AskOnline(salvinfo, singleVolumeNumber);
944 /* If singleVolumeNumber is not in our volumeSummary, it means that
945 * at least one other volume in the VG is on the partition, but the
946 * RW volume is not. We've already AskOffline'd it by now, though,
947 * so make sure we don't still have the volume checked out. */
948 AskDelete(salvinfo, singleVolumeNumber);
951 for (j = 0; j < salvinfo->nVolumes; j++) {
952 if (salvinfo->volumeSummaryp[j].header.id != singleVolumeNumber) {
953 if (!salvinfo->volumeSummaryp[j].deleted) {
954 AskOnline(salvinfo, salvinfo->volumeSummaryp[j].header.id);
960 Log("SALVAGING OF PARTITION %s%s COMPLETED\n",
961 salvinfo->fileSysPartition->name, (Testing ? " (READONLY mode)" : ""));
964 OS_CLOSE(inodeFile); /* SalvageVolumeGroup was the last which needed it. */
968 DeleteExtraVolumeHeaderFile(struct SalvInfo *salvinfo, struct VolumeSummary *vsp)
971 char filename[VMAXPATHLEN];
977 VolumeExternalName_r(vsp->header.id, filename, sizeof(filename));
978 sprintf(path, "%s" OS_DIRSEP "%s", salvinfo->fileSysPath, filename);
981 Log("The volume header file %s is not associated with any actual data (%sdeleted)\n", path, (Testing ? "would have been " : ""));
984 code = VDestroyVolumeDiskHeader(salvinfo->fileSysPartition, vsp->header.id, vsp->header.parent);
986 Log("Error %ld destroying volume disk header for volume %lu\n",
987 afs_printable_int32_ld(code),
988 afs_printable_uint32_lu(vsp->header.id));
991 /* make sure we actually delete the header file; ENOENT
992 * is fine, since VDestroyVolumeDiskHeader probably already
994 if (unlink(path) && errno != ENOENT) {
995 Log("Unable to unlink %s (errno = %d)\n", path, errno);
997 if (salvinfo->useFSYNC) {
998 AskDelete(salvinfo, vsp->header.id);
1005 CompareInodes(const void *_p1, const void *_p2)
1007 const struct ViceInodeInfo *p1 = _p1;
1008 const struct ViceInodeInfo *p2 = _p2;
1009 if (p1->u.vnode.vnodeNumber == INODESPECIAL
1010 || p2->u.vnode.vnodeNumber == INODESPECIAL) {
1011 VolumeId p1rwid, p2rwid;
1013 (p1->u.vnode.vnodeNumber ==
1014 INODESPECIAL ? p1->u.special.parentId : p1->u.vnode.volumeId);
1016 (p2->u.vnode.vnodeNumber ==
1017 INODESPECIAL ? p2->u.special.parentId : p2->u.vnode.volumeId);
1018 if (p1rwid < p2rwid)
1020 if (p1rwid > p2rwid)
1022 if (p1->u.vnode.vnodeNumber == INODESPECIAL
1023 && p2->u.vnode.vnodeNumber == INODESPECIAL) {
1024 if (p1->u.vnode.volumeId == p2->u.vnode.volumeId)
1025 return (p1->u.special.type < p2->u.special.type ? -1 : 1);
1026 if (p1->u.vnode.volumeId == p1rwid)
1028 if (p2->u.vnode.volumeId == p2rwid)
1030 return (p1->u.vnode.volumeId < p2->u.vnode.volumeId ? -1 : 1);
1032 if (p1->u.vnode.vnodeNumber != INODESPECIAL)
1033 return (p2->u.vnode.volumeId == p2rwid ? 1 : -1);
1034 return (p1->u.vnode.volumeId == p1rwid ? -1 : 1);
1036 if (p1->u.vnode.volumeId < p2->u.vnode.volumeId)
1038 if (p1->u.vnode.volumeId > p2->u.vnode.volumeId)
1040 if (p1->u.vnode.vnodeNumber < p2->u.vnode.vnodeNumber)
1042 if (p1->u.vnode.vnodeNumber > p2->u.vnode.vnodeNumber)
1044 /* The following tests are reversed, so that the most desirable
1045 * of several similar inodes comes first */
1046 if (p1->u.vnode.vnodeUniquifier > p2->u.vnode.vnodeUniquifier) {
1047 #ifdef AFS_3DISPARES
1048 if (p1->u.vnode.vnodeUniquifier > 3775414 /* 90% of 4.2M */ &&
1049 p2->u.vnode.vnodeUniquifier < 419490 /* 10% of 4.2M */ )
1052 #ifdef AFS_SGI_EXMAG
1053 if (p1->u.vnode.vnodeUniquifier > 15099494 /* 90% of 16M */ &&
1054 p2->u.vnode.vnodeUniquifier < 1677721 /* 10% of 16M */ )
1059 if (p1->u.vnode.vnodeUniquifier < p2->u.vnode.vnodeUniquifier) {
1060 #ifdef AFS_3DISPARES
1061 if (p2->u.vnode.vnodeUniquifier > 3775414 /* 90% of 4.2M */ &&
1062 p1->u.vnode.vnodeUniquifier < 419490 /* 10% of 4.2M */ )
1065 #ifdef AFS_SGI_EXMAG
1066 if (p2->u.vnode.vnodeUniquifier > 15099494 /* 90% of 16M */ &&
1067 p1->u.vnode.vnodeUniquifier < 1677721 /* 10% of 16M */ )
1072 if (p1->u.vnode.inodeDataVersion > p2->u.vnode.inodeDataVersion) {
1073 #ifdef AFS_3DISPARES
1074 if (p1->u.vnode.inodeDataVersion > 1887437 /* 90% of 2.1M */ &&
1075 p2->u.vnode.inodeDataVersion < 209716 /* 10% of 2.1M */ )
1078 #ifdef AFS_SGI_EXMAG
1079 if (p1->u.vnode.inodeDataVersion > 15099494 /* 90% of 16M */ &&
1080 p2->u.vnode.inodeDataVersion < 1677721 /* 10% of 16M */ )
1085 if (p1->u.vnode.inodeDataVersion < p2->u.vnode.inodeDataVersion) {
1086 #ifdef AFS_3DISPARES
1087 if (p2->u.vnode.inodeDataVersion > 1887437 /* 90% of 2.1M */ &&
1088 p1->u.vnode.inodeDataVersion < 209716 /* 10% of 2.1M */ )
1091 #ifdef AFS_SGI_EXMAG
1092 if (p2->u.vnode.inodeDataVersion > 15099494 /* 90% of 16M */ &&
1093 p1->u.vnode.inodeDataVersion < 1677721 /* 10% of 16M */ )
1102 CountVolumeInodes(struct ViceInodeInfo *ip, int maxInodes,
1103 struct InodeSummary *summary)
1105 VolumeId volume = ip->u.vnode.volumeId;
1106 VolumeId rwvolume = volume;
1111 while (maxInodes-- && volume == ip->u.vnode.volumeId) {
1113 if (ip->u.vnode.vnodeNumber == INODESPECIAL) {
1115 rwvolume = ip->u.special.parentId;
1116 /* This isn't quite right, as there could (in error) be different
1117 * parent inodes in different special vnodes */
1119 if (maxunique < ip->u.vnode.vnodeUniquifier)
1120 maxunique = ip->u.vnode.vnodeUniquifier;
1124 summary->volumeId = volume;
1125 summary->RWvolumeId = rwvolume;
1126 summary->nInodes = n;
1127 summary->nSpecialInodes = nSpecial;
1128 summary->maxUniquifier = maxunique;
1132 OnlyOneVolume(struct ViceInodeInfo *inodeinfo, afs_uint32 singleVolumeNumber, void *rock)
1134 if (inodeinfo->u.vnode.vnodeNumber == INODESPECIAL)
1135 return (inodeinfo->u.special.parentId == singleVolumeNumber);
1136 return (inodeinfo->u.vnode.volumeId == singleVolumeNumber);
1141 * Collect list of inodes in file named by path. If a truly fatal error,
1142 * unlink the file and abort. For lessor errors, return -1. The file will
1143 * be unlinked by the caller.
1146 GetInodeSummary(struct SalvInfo *salvinfo, FD_t inodeFile, VolumeId singleVolumeNumber)
1150 struct ViceInodeInfo *ip, *ip_save;
1151 struct InodeSummary summary;
1152 char summaryFileName[50];
1153 FD_t summaryFile = INVALID_FD;
1155 char *dev = salvinfo->fileSysPath;
1156 char *wpath = salvinfo->fileSysPath;
1158 char *dev = salvinfo->fileSysDeviceName;
1159 char *wpath = salvinfo->filesysfulldev;
1161 char *part = salvinfo->fileSysPath;
1166 afs_sfsize_t st_size;
1168 /* This file used to come from vfsck; cobble it up ourselves now... */
1170 ListViceInodes(dev, salvinfo->fileSysPath, inodeFile,
1171 singleVolumeNumber ? OnlyOneVolume : 0,
1172 singleVolumeNumber, &forceSal, forceR, wpath, NULL)) < 0) {
1174 Log("*** I/O error %d when writing a tmp inode file; Not salvaged %s ***\nIncrease space on partition or use '-tmpdir'\n", errno, dev);
1178 Abort("Unable to get inodes for \"%s\"; not salvaged\n", dev);
1180 if (forceSal && !ForceSalvage) {
1181 Log("***Forced salvage of all volumes on this partition***\n");
1184 OS_SEEK(inodeFile, 0L, SEEK_SET);
1185 salvinfo->inodeFd = inodeFile;
1186 if (salvinfo->inodeFd == INVALID_FD ||
1187 (st_size = OS_SIZE(salvinfo->inodeFd)) == -1) {
1188 Abort("No inode description file for \"%s\"; not salvaged\n", dev);
1190 tdir = (tmpdir ? tmpdir : part);
1192 (void)_putenv("TMP="); /* If "TMP" is set, then that overrides tdir. */
1193 (void)strcpy(summaryFileName, _tempnam(tdir, "salvage.temp."));
1195 snprintf(summaryFileName, sizeof summaryFileName,
1196 "%s" OS_DIRSEP "salvage.temp.%d", tdir, getpid());
1198 summaryFile = OS_OPEN(summaryFileName, O_RDWR|O_APPEND|O_CREAT, 0666);
1199 if (summaryFile == INVALID_FD) {
1200 Abort("Unable to create inode summary file\n");
1204 /* Using nt_unlink here since we're really using the delete on close
1205 * semantics of unlink. In most places in the salvager, we really do
1206 * mean to unlink the file at that point. Those places have been
1207 * modified to actually do that so that the NT crt can be used there.
1209 * jaltman - As commented elsewhere, this cannot work because fopen()
1210 * does not open files with DELETE and FILE_SHARE_DELETE.
1212 code = nt_unlink(summaryFileName);
1214 code = unlink(summaryFileName);
1217 Log("Error %d when trying to unlink %s\n", errno, summaryFileName);
1220 if (!canfork || debug || Fork() == 0) {
1221 int nInodes = st_size / sizeof(struct ViceInodeInfo);
1223 OS_CLOSE(summaryFile);
1224 if (!singleVolumeNumber) /* Remove the FORCESALVAGE file */
1225 RemoveTheForce(salvinfo->fileSysPath);
1227 struct VolumeSummary *vsp;
1231 GetVolumeSummary(salvinfo, singleVolumeNumber);
1233 for (i = 0, vsp = salvinfo->volumeSummaryp; i < salvinfo->nVolumes; i++) {
1235 if (vsp->header.id == singleVolumeNumber) {
1238 DeleteExtraVolumeHeaderFile(salvinfo, vsp);
1244 MaybeAskOnline(salvinfo, singleVolumeNumber);
1246 /* make sure we get rid of stray .vol headers, even if
1247 * they're not in our volume summary (might happen if
1248 * e.g. something else created them and they're not in the
1249 * fileserver VGC) */
1250 VDestroyVolumeDiskHeader(salvinfo->fileSysPartition,
1251 singleVolumeNumber, 0 /*parent*/);
1252 AskDelete(salvinfo, singleVolumeNumber);
1256 Log("%s vice inodes on %s; not salvaged\n",
1257 singleVolumeNumber ? "No applicable" : "No", dev);
1262 ip = (struct ViceInodeInfo *)malloc(nInodes*sizeof(struct ViceInodeInfo));
1264 OS_CLOSE(summaryFile);
1266 ("Unable to allocate enough space to read inode table; %s not salvaged\n",
1269 if (OS_READ(salvinfo->inodeFd, ip, st_size) != st_size) {
1270 OS_CLOSE(summaryFile);
1271 Abort("Unable to read inode table; %s not salvaged\n", dev);
1273 qsort(ip, nInodes, sizeof(struct ViceInodeInfo), CompareInodes);
1274 if (OS_SEEK(salvinfo->inodeFd, 0, SEEK_SET) == -1
1275 || OS_WRITE(salvinfo->inodeFd, ip, st_size) != st_size) {
1276 OS_CLOSE(summaryFile);
1277 Abort("Unable to rewrite inode table; %s not salvaged\n", dev);
1282 CountVolumeInodes(ip, nInodes, &summary);
1283 if (OS_WRITE(summaryFile, &summary, sizeof(summary)) != sizeof(summary)) {
1284 Log("Difficulty writing summary file (errno = %d); %s not salvaged\n", errno, dev);
1285 OS_CLOSE(summaryFile);
1289 summary.index += (summary.nInodes);
1290 nInodes -= summary.nInodes;
1291 ip += summary.nInodes;
1294 ip = ip_save = NULL;
1295 /* Following fflush is not fclose, because if it was debug mode would not work */
1296 if (OS_SYNC(summaryFile) == -1) {
1297 Log("Unable to write summary file (errno = %d); %s not salvaged\n", errno, dev);
1298 OS_CLOSE(summaryFile);
1302 if (canfork && !debug) {
1307 if (Wait("Inode summary") == -1) {
1308 OS_CLOSE(summaryFile);
1309 Exit(1); /* salvage of this partition aborted */
1313 st_size = OS_SIZE(summaryFile);
1314 osi_Assert(st_size >= 0);
1317 salvinfo->inodeSummary = (struct InodeSummary *)malloc(st_size);
1318 osi_Assert(salvinfo->inodeSummary != NULL);
1319 /* For GNU we need to do lseek to get the file pointer moved. */
1320 osi_Assert(OS_SEEK(summaryFile, 0, SEEK_SET) == 0);
1321 ret = OS_READ(summaryFile, salvinfo->inodeSummary, st_size);
1322 osi_Assert(ret == st_size);
1324 salvinfo->nVolumesInInodeFile = st_size / sizeof(struct InodeSummary);
1325 for (i = 0; i < salvinfo->nVolumesInInodeFile; i++) {
1326 salvinfo->inodeSummary[i].volSummary = NULL;
1328 Log("%d nVolumesInInodeFile %lu \n",salvinfo->nVolumesInInodeFile,(unsigned long)st_size);
1329 OS_CLOSE(summaryFile);
1332 if (retcode && singleVolumeNumber && !deleted) {
1333 AskError(salvinfo, singleVolumeNumber);
1339 /* Comparison routine for volume sort.
1340 This is setup so that a read-write volume comes immediately before
1341 any read-only clones of that volume */
1343 CompareVolumes(const void *_p1, const void *_p2)
1345 const struct VolumeSummary *p1 = _p1;
1346 const struct VolumeSummary *p2 = _p2;
1347 if (p1->header.parent != p2->header.parent)
1348 return p1->header.parent < p2->header.parent ? -1 : 1;
1349 if (p1->header.id == p1->header.parent) /* p1 is rw volume */
1351 if (p2->header.id == p2->header.parent) /* p2 is rw volume */
1353 return p1->header.id < p2->header.id ? -1 : 1; /* Both read-only */
1357 * Gleans volumeSummary information by asking the fileserver
1359 * @param[in] singleVolumeNumber the volume we're salvaging. 0 if we're
1360 * salvaging a whole partition
1362 * @return whether we obtained the volume summary information or not
1363 * @retval 0 success; we obtained the volume summary information
1364 * @retval -1 we raced with a fileserver restart; volume locks and checkout
1366 * @retval 1 we did not get the volume summary information; either the
1367 * fileserver responded with an error, or we are not supposed to
1368 * ask the fileserver for the information (e.g. we are salvaging
1369 * the entire partition or we are not the salvageserver)
1371 * @note for non-DAFS, always returns 1
1374 AskVolumeSummary(struct SalvInfo *salvinfo, VolumeId singleVolumeNumber)
1377 #if defined(FSSYNC_BUILD_CLIENT) && defined(AFS_DEMAND_ATTACH_FS)
1378 if (programType == salvageServer) {
1379 if (singleVolumeNumber) {
1380 FSSYNC_VGQry_response_t q_res;
1382 struct VolumeSummary *vsp;
1384 struct VolumeDiskHeader diskHdr;
1386 memset(&res, 0, sizeof(res));
1388 code = FSYNC_VGCQuery(salvinfo->fileSysPartition->name, singleVolumeNumber, &q_res, &res);
1391 * We must wait for the partition to finish scanning before
1392 * can continue, since we will not know if we got the entire
1393 * VG membership unless the partition is fully scanned.
1394 * We could, in theory, just scan the partition ourselves if
1395 * the VG cache is not ready, but we would be doing the exact
1396 * same scan the fileserver is doing; it will almost always
1397 * be faster to wait for the fileserver. The only exceptions
1398 * are if the partition does not take very long to scan, and
1399 * in that case it's fast either way, so who cares?
1401 if (code == SYNC_FAILED && res.hdr.reason == FSYNC_PART_SCANNING) {
1402 Log("waiting for fileserver to finish scanning partition %s...\n",
1403 salvinfo->fileSysPartition->name);
1405 for (i = 1; code == SYNC_FAILED && res.hdr.reason == FSYNC_PART_SCANNING; i++) {
1406 /* linearly ramp up from 1 to 10 seconds; nothing fancy,
1407 * just so small partitions don't need to wait over 10
1408 * seconds every time, and large partitions are generally
1409 * polled only once every ten seconds. */
1410 sleep((i > 10) ? (i = 10) : i);
1412 code = FSYNC_VGCQuery(salvinfo->fileSysPartition->name, singleVolumeNumber, &q_res, &res);
1416 if (code == SYNC_FAILED && res.hdr.reason == FSYNC_UNKNOWN_VOLID) {
1417 /* This can happen if there's no header for the volume
1418 * we're salvaging, or no headers exist for the VG (if
1419 * we're salvaging an RW). Act as if we got a response
1420 * with no VG members. The headers may be created during
1421 * salvaging, if there are inodes in this VG. */
1423 memset(&q_res, 0, sizeof(q_res));
1424 q_res.rw = singleVolumeNumber;
1428 Log("fileserver refused VGCQuery request for volume %lu on "
1429 "partition %s, code %ld reason %ld\n",
1430 afs_printable_uint32_lu(singleVolumeNumber),
1431 salvinfo->fileSysPartition->name,
1432 afs_printable_int32_ld(code),
1433 afs_printable_int32_ld(res.hdr.reason));
1437 if (q_res.rw != singleVolumeNumber) {
1438 Log("fileserver requested salvage of clone %lu; scheduling salvage of volume group %lu...\n",
1439 afs_printable_uint32_lu(singleVolumeNumber),
1440 afs_printable_uint32_lu(q_res.rw));
1441 #ifdef SALVSYNC_BUILD_CLIENT
1442 if (SALVSYNC_LinkVolume(q_res.rw,
1444 salvinfo->fileSysPartition->name,
1446 Log("schedule request failed\n");
1448 #endif /* SALVSYNC_BUILD_CLIENT */
1449 Exit(SALSRV_EXIT_VOLGROUP_LINK);
1452 salvinfo->volumeSummaryp = calloc(VOL_VG_MAX_VOLS, sizeof(struct VolumeSummary));
1453 osi_Assert(salvinfo->volumeSummaryp != NULL);
1455 salvinfo->nVolumes = 0;
1456 vsp = salvinfo->volumeSummaryp;
1458 for (i = 0; i < VOL_VG_MAX_VOLS; i++) {
1459 char name[VMAXPATHLEN];
1461 if (!q_res.children[i]) {
1465 /* AskOffline for singleVolumeNumber was called much earlier */
1466 if (q_res.children[i] != singleVolumeNumber) {
1467 AskOffline(salvinfo, q_res.children[i]);
1468 if (LockVolume(salvinfo, q_res.children[i])) {
1474 code = VReadVolumeDiskHeader(q_res.children[i], salvinfo->fileSysPartition, &diskHdr);
1476 Log("Cannot read header for %lu; trying to salvage group anyway\n",
1477 afs_printable_uint32_lu(q_res.children[i]));
1482 DiskToVolumeHeader(&vsp->header, &diskHdr);
1483 VolumeExternalName_r(q_res.children[i], name, sizeof(name));
1485 salvinfo->nVolumes++;
1489 qsort(salvinfo->volumeSummaryp, salvinfo->nVolumes, sizeof(struct VolumeSummary),
1494 Log("Cannot get volume summary from fileserver; falling back to scanning "
1495 "entire partition\n");
1498 #endif /* FSSYNC_BUILD_CLIENT && AFS_DEMAND_ATTACH_FS */
1503 * count how many volume headers are found by VWalkVolumeHeaders.
1505 * @param[in] dp the disk partition (unused)
1506 * @param[in] name full path to the .vol header (unused)
1507 * @param[in] hdr the header data (unused)
1508 * @param[in] last whether this is the last try or not (unused)
1509 * @param[in] rock actually an afs_int32*; the running count of how many
1510 * volumes we have found
1515 CountHeader(struct DiskPartition64 *dp, const char *name,
1516 struct VolumeDiskHeader *hdr, int last, void *rock)
1518 afs_int32 *nvols = (afs_int32 *)rock;
1524 * parameters to pass to the VWalkVolumeHeaders callbacks when recording volume
1527 struct SalvageScanParams {
1528 VolumeId singleVolumeNumber; /**< 0 for a partition-salvage, otherwise the
1529 * vol id of the VG we're salvaging */
1530 struct VolumeSummary *vsp; /**< ptr to the current volume summary object
1531 * we're filling in */
1532 afs_int32 nVolumes; /**< # of vols we've encountered */
1533 afs_int32 totalVolumes; /**< max # of vols we should encounter (the
1534 * # of vols we've alloc'd memory for) */
1535 int retry; /**< do we need to retry vol lock/checkout? */
1536 struct SalvInfo *salvinfo; /**< salvage job info */
1540 * records volume summary info found from VWalkVolumeHeaders.
1542 * Found volumes are also taken offline if they are in the specific volume
1543 * group we are looking for.
1545 * @param[in] dp the disk partition
1546 * @param[in] name full path to the .vol header
1547 * @param[in] hdr the header data
1548 * @param[in] last 1 if this is the last try to read the header, 0 otherwise
1549 * @param[in] rock actually a struct SalvageScanParams*, containing the
1550 * information needed to record the volume summary data
1552 * @return operation status
1554 * @retval -1 volume locking raced with fileserver restart; checking out
1555 * and locking volumes needs to be retried
1556 * @retval 1 volume header is mis-named and should be deleted
1559 RecordHeader(struct DiskPartition64 *dp, const char *name,
1560 struct VolumeDiskHeader *hdr, int last, void *rock)
1562 char nameShouldBe[64];
1563 struct SalvageScanParams *params;
1564 struct VolumeSummary summary;
1565 VolumeId singleVolumeNumber;
1566 struct SalvInfo *salvinfo;
1568 params = (struct SalvageScanParams *)rock;
1570 memset(&summary, 0, sizeof(summary));
1572 singleVolumeNumber = params->singleVolumeNumber;
1573 salvinfo = params->salvinfo;
1575 DiskToVolumeHeader(&summary.header, hdr);
1577 if (singleVolumeNumber && summary.header.id == singleVolumeNumber
1578 && summary.header.parent != singleVolumeNumber) {
1580 if (programType == salvageServer) {
1581 #ifdef SALVSYNC_BUILD_CLIENT
1582 Log("fileserver requested salvage of clone %u; scheduling salvage of volume group %u...\n",
1583 summary.header.id, summary.header.parent);
1584 if (SALVSYNC_LinkVolume(summary.header.parent,
1588 Log("schedule request failed\n");
1591 Exit(SALSRV_EXIT_VOLGROUP_LINK);
1594 Log("%u is a read-only volume; not salvaged\n",
1595 singleVolumeNumber);
1600 if (!singleVolumeNumber || summary.header.id == singleVolumeNumber
1601 || summary.header.parent == singleVolumeNumber) {
1603 /* check if the header file is incorrectly named */
1605 const char *base = strrchr(name, OS_DIRSEPC);
1612 snprintf(nameShouldBe, sizeof nameShouldBe,
1613 VFORMAT, afs_printable_uint32_lu(summary.header.id));
1616 if (strcmp(nameShouldBe, base)) {
1617 /* .vol file has wrong name; retry/delete */
1621 if (!badname || last) {
1622 /* only offline the volume if the header is good, or if this is
1623 * the last try looking at it; avoid AskOffline'ing the same vol
1626 if (singleVolumeNumber
1627 && summary.header.id != singleVolumeNumber) {
1628 /* don't offline singleVolumeNumber; we already did that
1631 AskOffline(salvinfo, summary.header.id);
1633 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
1635 /* don't lock the volume if the header is bad, since we're
1636 * about to delete it anyway. */
1637 if (LockVolume(salvinfo, summary.header.id)) {
1642 #endif /* AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL */
1646 if (last && !Showmode) {
1647 Log("Volume header file %s is incorrectly named (should be %s "
1648 "not %s); %sdeleted (it will be recreated later, if "
1649 "necessary)\n", name, nameShouldBe, base,
1650 (Testing ? "it would have been " : ""));
1658 if (params->nVolumes > params->totalVolumes) {
1659 /* We found more volumes than we found on the first partition walk;
1660 * apparently something created a volume while we were
1661 * partition-salvaging, or we found more than 20 vols when salvaging a
1662 * particular volume. Abort if we detect this, since other programs
1663 * supposed to not touch the partition while it is partition-salvaging,
1664 * and we shouldn't find more than 20 vols in a VG.
1666 Abort("Found %ld vol headers, but should have found at most %ld! "
1667 "Make sure the volserver/fileserver are not running at the "
1668 "same time as a partition salvage\n",
1669 afs_printable_int32_ld(params->nVolumes),
1670 afs_printable_int32_ld(params->totalVolumes));
1673 memcpy(params->vsp, &summary, sizeof(summary));
1681 * possibly unlinks bad volume headers found from VWalkVolumeHeaders.
1683 * If the header could not be read in at all, the header is always unlinked.
1684 * If instead RecordHeader said the header was bad (that is, the header file
1685 * is mis-named), we only unlink if we are doing a partition salvage, as
1686 * opposed to salvaging a specific volume group.
1688 * @param[in] dp the disk partition
1689 * @param[in] name full path to the .vol header
1690 * @param[in] hdr header data, or NULL if the header could not be read
1691 * @param[in] rock actually a struct SalvageScanParams*, with some information
1695 UnlinkHeader(struct DiskPartition64 *dp, const char *name,
1696 struct VolumeDiskHeader *hdr, void *rock)
1698 struct SalvageScanParams *params;
1701 params = (struct SalvageScanParams *)rock;
1704 /* no header; header is too bogus to read in at all */
1706 Log("%s is not a legitimate volume header file; %sdeleted\n", name, (Testing ? "it would have been " : ""));
1712 } else if (!params->singleVolumeNumber) {
1713 /* We were able to read in a header, but RecordHeader said something
1714 * was wrong with it. We only unlink those if we are doing a partition
1721 if (dounlink && unlink(name)) {
1722 Log("Error %d while trying to unlink %s\n", errno, name);
1727 * Populates salvinfo->volumeSummaryp with volume summary information, either by asking
1728 * the fileserver for VG information, or by scanning the /vicepX partition.
1730 * @param[in] singleVolumeNumber the volume ID of the single volume group we
1731 * are salvaging, or 0 if this is a partition
1734 * @return operation status
1736 * @retval -1 we raced with a fileserver restart; checking out and locking
1737 * volumes must be retried
1740 GetVolumeSummary(struct SalvInfo *salvinfo, VolumeId singleVolumeNumber)
1742 afs_int32 nvols = 0;
1743 struct SalvageScanParams params;
1746 code = AskVolumeSummary(salvinfo, singleVolumeNumber);
1748 /* we successfully got the vol information from the fileserver; no
1749 * need to scan the partition */
1753 /* we need to retry volume checkout */
1757 if (!singleVolumeNumber) {
1758 /* Count how many volumes we have in /vicepX */
1759 code = VWalkVolumeHeaders(salvinfo->fileSysPartition, salvinfo->fileSysPath, CountHeader,
1762 Abort("Can't read directory %s; not salvaged\n", salvinfo->fileSysPath);
1767 nvols = VOL_VG_MAX_VOLS;
1770 salvinfo->volumeSummaryp = calloc(nvols, sizeof(struct VolumeSummary));
1771 osi_Assert(salvinfo->volumeSummaryp != NULL);
1773 params.singleVolumeNumber = singleVolumeNumber;
1774 params.vsp = salvinfo->volumeSummaryp;
1775 params.nVolumes = 0;
1776 params.totalVolumes = nvols;
1778 params.salvinfo = salvinfo;
1780 /* walk the partition directory of volume headers and record the info
1781 * about them; unlinking invalid headers */
1782 code = VWalkVolumeHeaders(salvinfo->fileSysPartition, salvinfo->fileSysPath, RecordHeader,
1783 UnlinkHeader, ¶ms);
1785 /* we apparently need to retry checking-out/locking volumes */
1789 Abort("Failed to get volume header summary\n");
1791 salvinfo->nVolumes = params.nVolumes;
1793 qsort(salvinfo->volumeSummaryp, salvinfo->nVolumes, sizeof(struct VolumeSummary),
1799 /* Find the link table. This should be associated with the RW volume or, if
1800 * a RO only site, then the RO volume. For now, be cautious and hunt carefully.
1803 FindLinkHandle(struct InodeSummary *isp, int nVols,
1804 struct ViceInodeInfo *allInodes)
1807 struct ViceInodeInfo *ip;
1809 for (i = 0; i < nVols; i++) {
1810 ip = allInodes + isp[i].index;
1811 for (j = 0; j < isp[i].nSpecialInodes; j++) {
1812 if (ip[j].u.special.type == VI_LINKTABLE)
1813 return ip[j].inodeNumber;
1820 CreateLinkTable(struct SalvInfo *salvinfo, struct InodeSummary *isp, Inode ino)
1822 struct versionStamp version;
1825 if (!VALID_INO(ino))
1827 IH_CREATE(NULL, salvinfo->fileSysDevice, salvinfo->fileSysPath, 0, isp->RWvolumeId,
1828 INODESPECIAL, VI_LINKTABLE, isp->RWvolumeId);
1829 if (!VALID_INO(ino))
1831 ("Unable to allocate link table inode for volume %u (error = %d)\n",
1832 isp->RWvolumeId, errno);
1833 IH_INIT(salvinfo->VGLinkH, salvinfo->fileSysDevice, isp->RWvolumeId, ino);
1834 fdP = IH_OPEN(salvinfo->VGLinkH);
1836 Abort("Can't open link table for volume %u (error = %d)\n",
1837 isp->RWvolumeId, errno);
1839 if (FDH_TRUNC(fdP, sizeof(version) + sizeof(short)) < 0)
1840 Abort("Can't truncate link table for volume %u (error = %d)\n",
1841 isp->RWvolumeId, errno);
1843 version.magic = LINKTABLEMAGIC;
1844 version.version = LINKTABLEVERSION;
1846 if (FDH_PWRITE(fdP, (char *)&version, sizeof(version), 0)
1848 Abort("Can't truncate link table for volume %u (error = %d)\n",
1849 isp->RWvolumeId, errno);
1851 FDH_REALLYCLOSE(fdP);
1853 /* If the volume summary exits (i.e., the V*.vol header file exists),
1854 * then set this inode there as well.
1856 if (isp->volSummary)
1857 isp->volSummary->header.linkTable = ino;
1866 SVGParms_t *parms = (SVGParms_t *) arg;
1867 DoSalvageVolumeGroup(parms->svgp_salvinfo, parms->svgp_inodeSummaryp, parms->svgp_count);
1872 nt_SalvageVolumeGroup(struct SalvInfo *salvinfo, struct InodeSummary *isp, int nVols)
1875 pthread_attr_t tattr;
1879 /* Initialize per volume global variables, even if later code does so */
1880 salvinfo->VolumeChanged = 0;
1881 salvinfo->VGLinkH = NULL;
1882 salvinfo->VGLinkH_cnt = 0;
1883 memset(&salvinfo->VolInfo, 0, sizeof(salvinfo->VolInfo));
1885 parms.svgp_inodeSummaryp = isp;
1886 parms.svgp_count = nVols;
1887 parms.svgp_salvinfo = salvinfo;
1888 code = pthread_attr_init(&tattr);
1890 Log("Failed to salvage volume group %u: pthread_attr_init()\n",
1894 code = pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_JOINABLE);
1896 Log("Failed to salvage volume group %u: pthread_attr_setdetachstate()\n", isp->RWvolumeId);
1899 code = pthread_create(&tid, &tattr, nt_SVG, &parms);
1901 Log("Failed to create thread to salvage volume group %u\n",
1905 (void)pthread_join(tid, NULL);
1907 #endif /* AFS_NT40_ENV */
1910 DoSalvageVolumeGroup(struct SalvInfo *salvinfo, struct InodeSummary *isp, int nVols)
1912 struct ViceInodeInfo *inodes, *allInodes, *ip;
1913 int i, totalInodes, size, salvageTo;
1917 int dec_VGLinkH = 0;
1919 FdHandle_t *fdP = NULL;
1921 salvinfo->VGLinkH_cnt = 0;
1922 haveRWvolume = (isp->volumeId == isp->RWvolumeId
1923 && isp->nSpecialInodes > 0);
1924 if ((!ShowMounts) || (ShowMounts && !haveRWvolume)) {
1925 if (!ForceSalvage && QuickCheck(salvinfo, isp, nVols))
1928 if (ShowMounts && !haveRWvolume)
1930 if (canfork && !debug && Fork() != 0) {
1931 (void)Wait("Salvage volume group");
1934 for (i = 0, totalInodes = 0; i < nVols; i++)
1935 totalInodes += isp[i].nInodes;
1936 size = totalInodes * sizeof(struct ViceInodeInfo);
1937 inodes = (struct ViceInodeInfo *)malloc(size);
1938 allInodes = inodes - isp->index; /* this would the base of all the inodes
1939 * for the partition, if all the inodes
1940 * had been read into memory */
1942 (salvinfo->inodeFd, isp->index * sizeof(struct ViceInodeInfo),
1944 osi_Assert(OS_READ(salvinfo->inodeFd, inodes, size) == size);
1946 /* Don't try to salvage a read write volume if there isn't one on this
1948 salvageTo = haveRWvolume ? 0 : 1;
1950 #ifdef AFS_NAMEI_ENV
1951 ino = FindLinkHandle(isp, nVols, allInodes);
1952 if (VALID_INO(ino)) {
1953 IH_INIT(salvinfo->VGLinkH, salvinfo->fileSysDevice, isp->RWvolumeId, ino);
1954 fdP = IH_OPEN(salvinfo->VGLinkH);
1956 if (VALID_INO(ino) && fdP != NULL) {
1957 struct versionStamp header;
1958 afs_sfsize_t nBytes;
1960 nBytes = FDH_PREAD(fdP, (char *)&header, sizeof(struct versionStamp), 0);
1961 if (nBytes != sizeof(struct versionStamp)
1962 || header.magic != LINKTABLEMAGIC) {
1963 Log("Bad linktable header for volume %u.\n", isp->RWvolumeId);
1964 FDH_REALLYCLOSE(fdP);
1968 if (!VALID_INO(ino) || fdP == NULL) {
1969 Log("%s link table for volume %u.\n",
1970 Testing ? "Would have recreated" : "Recreating", isp->RWvolumeId);
1972 IH_INIT(salvinfo->VGLinkH, salvinfo->fileSysDevice, -1, -1);
1975 struct ViceInodeInfo *ip;
1976 CreateLinkTable(salvinfo, isp, ino);
1977 fdP = IH_OPEN(salvinfo->VGLinkH);
1978 /* Sync fake 1 link counts to the link table, now that it exists */
1980 for (i = 0; i < nVols; i++) {
1981 ip = allInodes + isp[i].index;
1982 for (j = isp[i].nSpecialInodes; j < isp[i].nInodes; j++) {
1983 namei_SetLinkCount(fdP, ip[j].inodeNumber, 1, 1);
1990 FDH_REALLYCLOSE(fdP);
1992 IH_INIT(salvinfo->VGLinkH, salvinfo->fileSysDevice, -1, -1);
1995 /* Salvage in reverse order--read/write volume last; this way any
1996 * Inodes not referenced by the time we salvage the read/write volume
1997 * can be picked up by the read/write volume */
1998 /* ACTUALLY, that's not done right now--the inodes just vanish */
1999 for (i = nVols - 1; i >= salvageTo; i--) {
2001 struct InodeSummary *lisp = &isp[i];
2002 #ifdef AFS_NAMEI_ENV
2003 /* If only the RO is present on this partition, the link table
2004 * shows up as a RW volume special file. Need to make sure the
2005 * salvager doesn't try to salvage the non-existent RW.
2007 if (rw && nVols > 1 && isp[i].nSpecialInodes == 1) {
2008 /* If this only special inode is the link table, continue */
2009 if (inodes->u.special.type == VI_LINKTABLE) {
2016 Log("%s VOLUME %u%s.\n", rw ? "SALVAGING" : "CHECKING CLONED",
2017 lisp->volumeId, (Testing ? "(READONLY mode)" : ""));
2018 /* Check inodes twice. The second time do things seriously. This
2019 * way the whole RO volume can be deleted, below, if anything goes wrong */
2020 for (check = 1; check >= 0; check--) {
2022 if (SalvageVolumeHeaderFile(salvinfo, lisp, allInodes, rw, check, &deleteMe)
2024 MaybeZapVolume(salvinfo, lisp, "Volume header", deleteMe, check);
2025 if (rw && deleteMe) {
2026 haveRWvolume = 0; /* This will cause its inodes to be deleted--since salvage
2027 * volume won't be called */
2033 if (rw && check == 1)
2035 if (SalvageVnodes(salvinfo, isp, lisp, allInodes, check) == -1) {
2036 MaybeZapVolume(salvinfo, lisp, "Vnode index", 0, check);
2042 /* Fix actual inode counts */
2045 Log("totalInodes %d\n",totalInodes);
2046 for (ip = inodes; totalInodes; ip++, totalInodes--) {
2047 static int TraceBadLinkCounts = 0;
2048 #ifdef AFS_NAMEI_ENV
2049 if (salvinfo->VGLinkH->ih_ino == ip->inodeNumber) {
2050 dec_VGLinkH = ip->linkCount - salvinfo->VGLinkH_cnt;
2051 VGLinkH_p1 = ip->u.param[0];
2052 continue; /* Deal with this last. */
2055 if (ip->linkCount != 0 && TraceBadLinkCounts) {
2056 TraceBadLinkCounts--; /* Limit reports, per volume */
2057 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]);
2059 while (ip->linkCount > 0) {
2060 /* below used to assert, not break */
2062 if (IH_DEC(salvinfo->VGLinkH, ip->inodeNumber, ip->u.param[0])) {
2063 Log("idec failed. inode %s errno %d\n",
2064 PrintInode(stmp, ip->inodeNumber), errno);
2070 while (ip->linkCount < 0) {
2071 /* these used to be asserts */
2073 if (IH_INC(salvinfo->VGLinkH, ip->inodeNumber, ip->u.param[0])) {
2074 Log("iinc failed. inode %s errno %d\n",
2075 PrintInode(stmp, ip->inodeNumber), errno);
2082 #ifdef AFS_NAMEI_ENV
2083 while (dec_VGLinkH > 0) {
2084 if (IH_DEC(salvinfo->VGLinkH, salvinfo->VGLinkH->ih_ino, VGLinkH_p1) < 0) {
2085 Log("idec failed on link table, errno = %d\n", errno);
2089 while (dec_VGLinkH < 0) {
2090 if (IH_INC(salvinfo->VGLinkH, salvinfo->VGLinkH->ih_ino, VGLinkH_p1) < 0) {
2091 Log("iinc failed on link table, errno = %d\n", errno);
2098 /* Directory consistency checks on the rw volume */
2100 SalvageVolume(salvinfo, isp, salvinfo->VGLinkH);
2101 IH_RELEASE(salvinfo->VGLinkH);
2103 if (canfork && !debug) {
2110 QuickCheck(struct SalvInfo *salvinfo, struct InodeSummary *isp, int nVols)
2112 /* Check headers BEFORE forking */
2116 for (i = 0; i < nVols; i++) {
2117 struct VolumeSummary *vs = isp[i].volSummary;
2118 VolumeDiskData volHeader;
2120 /* Don't salvage just because phantom rw volume is there... */
2121 /* (If a read-only volume exists, read/write inodes must also exist) */
2122 if (i == 0 && isp->nSpecialInodes == 0 && nVols > 1)
2126 IH_INIT(h, salvinfo->fileSysDevice, vs->header.parent, vs->header.volumeInfo);
2127 if (IH_IREAD(h, 0, (char *)&volHeader, sizeof(volHeader))
2128 == sizeof(volHeader)
2129 && volHeader.stamp.magic == VOLUMEINFOMAGIC
2130 && volHeader.dontSalvage == DONT_SALVAGE
2131 && volHeader.needsSalvaged == 0 && volHeader.destroyMe == 0) {
2132 if (volHeader.inUse != 0) {
2133 volHeader.inUse = 0;
2134 volHeader.inService = 1;
2136 if (IH_IWRITE(h, 0, (char *)&volHeader, sizeof(volHeader))
2137 != sizeof(volHeader)) {
2153 /* SalvageVolumeHeaderFile
2155 * Salvage the top level V*.vol header file. Make sure the special files
2156 * exist and that there are no duplicates.
2158 * Calls SalvageHeader for each possible type of volume special file.
2162 SalvageVolumeHeaderFile(struct SalvInfo *salvinfo, struct InodeSummary *isp,
2163 struct ViceInodeInfo *inodes, int RW,
2164 int check, int *deleteMe)
2167 struct ViceInodeInfo *ip;
2168 int allinodesobsolete = 1;
2169 struct VolumeDiskHeader diskHeader;
2170 afs_int32 (*writefunc)(VolumeDiskHeader_t *, struct DiskPartition64 *) = NULL;
2172 struct VolumeHeader tempHeader;
2173 struct afs_inode_info stuff[MAXINODETYPE];
2175 /* keeps track of special inodes that are probably 'good'; they are
2176 * referenced in the vol header, and are included in the given inodes
2181 } goodspecial[MAXINODETYPE];
2186 memset(goodspecial, 0, sizeof(goodspecial));
2188 skip = malloc(isp->nSpecialInodes * sizeof(*skip));
2190 memset(skip, 0, isp->nSpecialInodes * sizeof(*skip));
2192 Log("cannot allocate memory for inode skip array when salvaging "
2193 "volume %lu; not performing duplicate special inode recovery\n",
2194 afs_printable_uint32_lu(isp->volumeId));
2195 /* still try to perform the salvage; the skip array only does anything
2196 * if we detect duplicate special inodes */
2199 init_inode_info(&tempHeader, stuff);
2202 * First, look at the special inodes and see if any are referenced by
2203 * the existing volume header. If we find duplicate special inodes, we
2204 * can use this information to use the referenced inode (it's more
2205 * likely to be the 'good' one), and throw away the duplicates.
2207 if (isp->volSummary && skip) {
2208 /* use tempHeader, so we can use the stuff[] array to easily index
2209 * into the isp->volSummary special inodes */
2210 memcpy(&tempHeader, &isp->volSummary->header, sizeof(struct VolumeHeader));
2212 for (i = 0; i < isp->nSpecialInodes; i++) {
2213 ip = &inodes[isp->index + i];
2214 if (ip->u.special.type <= 0 || ip->u.special.type > MAXINODETYPE) {
2215 /* will get taken care of in a later loop */
2218 if (ip->inodeNumber == *(stuff[ip->u.special.type - 1].inode)) {
2219 goodspecial[ip->u.special.type-1].valid = 1;
2220 goodspecial[ip->u.special.type-1].inode = ip->inodeNumber;
2225 memset(&tempHeader, 0, sizeof(tempHeader));
2226 tempHeader.stamp.magic = VOLUMEHEADERMAGIC;
2227 tempHeader.stamp.version = VOLUMEHEADERVERSION;
2228 tempHeader.id = isp->volumeId;
2229 tempHeader.parent = isp->RWvolumeId;
2231 /* Check for duplicates (inodes are sorted by type field) */
2232 for (i = 0; i < isp->nSpecialInodes - 1; i++) {
2233 ip = &inodes[isp->index + i];
2234 if (ip->u.special.type == (ip + 1)->u.special.type) {
2235 afs_ino_str_t stmp1, stmp2;
2237 if (ip->u.special.type <= 0 || ip->u.special.type > MAXINODETYPE) {
2238 /* Will be caught in the loop below */
2242 Log("Duplicate special %d inodes for volume %u found (%s, %s);\n",
2243 ip->u.special.type, isp->volumeId,
2244 PrintInode(stmp1, ip->inodeNumber),
2245 PrintInode(stmp2, (ip+1)->inodeNumber));
2247 if (skip && goodspecial[ip->u.special.type-1].valid) {
2248 Inode gi = goodspecial[ip->u.special.type-1].inode;
2251 Log("using special inode referenced by vol header (%s)\n",
2252 PrintInode(stmp1, gi));
2255 /* the volume header references some special inode of
2256 * this type in the inodes array; are we it? */
2257 if (ip->inodeNumber != gi) {
2259 } else if ((ip+1)->inodeNumber != gi) {
2260 /* in case this is the last iteration; we need to
2261 * make sure we check ip+1, too */
2266 Log("cannot determine which is correct; salvage of volume %u aborted\n", isp->volumeId);
2274 for (i = 0; i < isp->nSpecialInodes; i++) {
2276 ip = &inodes[isp->index + i];
2277 if (ip->u.special.type <= 0 || ip->u.special.type > MAXINODETYPE) {
2279 Log("Rubbish header inode %s of type %d\n",
2280 PrintInode(stmp, ip->inodeNumber),
2281 ip->u.special.type);
2287 Log("Rubbish header inode %s of type %d; deleted\n",
2288 PrintInode(stmp, ip->inodeNumber),
2289 ip->u.special.type);
2290 } else if (!stuff[ip->u.special.type - 1].obsolete) {
2291 if (skip && skip[i]) {
2292 if (orphans == ORPH_REMOVE) {
2293 Log("Removing orphan special inode %s of type %d\n",
2294 PrintInode(stmp, ip->inodeNumber), ip->u.special.type);
2297 Log("Ignoring orphan special inode %s of type %d\n",
2298 PrintInode(stmp, ip->inodeNumber), ip->u.special.type);
2299 /* fall through to the ip->linkCount--; line below */
2302 *(stuff[ip->u.special.type - 1].inode) = ip->inodeNumber;
2303 allinodesobsolete = 0;
2305 if (!check && ip->u.special.type != VI_LINKTABLE)
2306 ip->linkCount--; /* Keep the inode around */
2314 if (allinodesobsolete) {
2321 salvinfo->VGLinkH_cnt++; /* one for every header. */
2323 if (!RW && !check && isp->volSummary) {
2324 ClearROInUseBit(isp->volSummary);
2328 for (i = 0; i < MAXINODETYPE; i++) {
2329 if (stuff[i].inodeType == VI_LINKTABLE) {
2330 /* Gross hack: SalvageHeader does a bcmp on the volume header.
2331 * And we may have recreated the link table earlier, so set the
2332 * RW header as well. The header magic was already checked.
2334 if (VALID_INO(salvinfo->VGLinkH->ih_ino)) {
2335 *stuff[i].inode = salvinfo->VGLinkH->ih_ino;
2339 if (SalvageHeader(salvinfo, &stuff[i], isp, check, deleteMe) == -1 && check)
2343 if (isp->volSummary == NULL) {
2345 char headerName[64];
2346 snprintf(headerName, sizeof headerName, VFORMAT,
2347 afs_printable_uint32_lu(isp->volumeId));
2348 snprintf(path, sizeof path, "%s" OS_DIRSEP "%s",
2349 salvinfo->fileSysPath, headerName);
2351 Log("No header file for volume %u\n", isp->volumeId);
2355 Log("No header file for volume %u; %screating %s\n",
2356 isp->volumeId, (Testing ? "it would have been " : ""),
2358 isp->volSummary = calloc(1, sizeof(struct VolumeSummary));
2360 writefunc = VCreateVolumeDiskHeader;
2363 char headerName[64];
2364 /* hack: these two fields are obsolete... */
2365 isp->volSummary->header.volumeAcl = 0;
2366 isp->volSummary->header.volumeMountTable = 0;
2369 (&isp->volSummary->header, &tempHeader,
2370 sizeof(struct VolumeHeader))) {
2371 VolumeExternalName_r(isp->volumeId, headerName, sizeof(headerName));
2372 snprintf(path, sizeof path, "%s" OS_DIRSEP "%s",
2373 salvinfo->fileSysPath, headerName);
2375 Log("Header file %s is damaged or no longer valid%s\n", path,
2376 (check ? "" : "; repairing"));
2380 writefunc = VWriteVolumeDiskHeader;
2384 memcpy(&isp->volSummary->header, &tempHeader,
2385 sizeof(struct VolumeHeader));
2388 Log("It would have written a new header file for volume %u\n",
2392 VolumeHeaderToDisk(&diskHeader, &tempHeader);
2393 code = (*writefunc)(&diskHeader, salvinfo->fileSysPartition);
2395 Log("Error %ld writing volume header file for volume %lu\n",
2396 afs_printable_int32_ld(code),
2397 afs_printable_uint32_lu(diskHeader.id));
2402 IH_INIT(isp->volSummary->volumeInfoHandle, salvinfo->fileSysDevice, isp->RWvolumeId,
2403 isp->volSummary->header.volumeInfo);
2408 SalvageHeader(struct SalvInfo *salvinfo, struct afs_inode_info *sp,
2409 struct InodeSummary *isp, int check, int *deleteMe)
2412 VolumeDiskData volumeInfo;
2413 struct versionStamp fileHeader;
2422 #ifndef AFS_NAMEI_ENV
2423 if (sp->inodeType == VI_LINKTABLE)
2424 return 0; /* header magic was already checked */
2426 if (*(sp->inode) == 0) {
2428 Log("Missing inode in volume header (%s)\n", sp->description);
2432 Log("Missing inode in volume header (%s); %s\n", sp->description,
2433 (Testing ? "it would have recreated it" : "recreating"));
2436 IH_CREATE(NULL, salvinfo->fileSysDevice, salvinfo->fileSysPath, 0, isp->volumeId,
2437 INODESPECIAL, sp->inodeType, isp->RWvolumeId);
2438 if (!VALID_INO(*(sp->inode)))
2440 ("Unable to allocate inode (%s) for volume header (error = %d)\n",
2441 sp->description, errno);
2446 IH_INIT(specH, salvinfo->fileSysDevice, isp->RWvolumeId, *(sp->inode));
2447 fdP = IH_OPEN(specH);
2448 if (OKToZap && (fdP == NULL) && BadError(errno)) {
2449 /* bail out early and destroy the volume */
2451 Log("Still can't open volume header inode (%s), destroying volume\n", sp->description);
2458 Abort("Unable to open inode (%s) of volume header (error = %d)\n",
2459 sp->description, errno);
2462 && (FDH_PREAD(fdP, (char *)&header, sp->size, 0) != sp->size
2463 || header.fileHeader.magic != sp->stamp.magic)) {
2465 Log("Part of the header (%s) is corrupted\n", sp->description);
2466 FDH_REALLYCLOSE(fdP);
2470 Log("Part of the header (%s) is corrupted; recreating\n",
2473 /* header can be garbage; make sure we don't read garbage data from
2475 memset(&header, 0, sizeof(header));
2477 if (sp->inodeType == VI_VOLINFO
2478 && header.volumeInfo.destroyMe == DESTROY_ME) {
2481 FDH_REALLYCLOSE(fdP);
2485 if (recreate && !Testing) {
2488 ("Internal error: recreating volume header (%s) in check mode\n",
2490 nBytes = FDH_TRUNC(fdP, 0);
2492 Abort("Unable to truncate volume header file (%s) (error = %d)\n",
2493 sp->description, errno);
2495 /* The following code should be moved into vutil.c */
2496 if (sp->inodeType == VI_VOLINFO) {
2498 memset(&header.volumeInfo, 0, sizeof(header.volumeInfo));
2499 header.volumeInfo.stamp = sp->stamp;
2500 header.volumeInfo.id = isp->volumeId;
2501 header.volumeInfo.parentId = isp->RWvolumeId;
2502 sprintf(header.volumeInfo.name, "bogus.%u", isp->volumeId);
2503 Log("Warning: the name of volume %u is now \"bogus.%u\"\n",
2504 isp->volumeId, isp->volumeId);
2505 header.volumeInfo.inService = 0;
2506 header.volumeInfo.blessed = 0;
2507 /* The + 1000 is a hack in case there are any files out in venus caches */
2508 header.volumeInfo.uniquifier = (isp->maxUniquifier + 1) + 1000;
2509 header.volumeInfo.type = (isp->volumeId == isp->RWvolumeId ? readwriteVolume : readonlyVolume); /* XXXX */
2510 header.volumeInfo.needsCallback = 0;
2511 gettimeofday(&tp, NULL);
2512 header.volumeInfo.creationDate = tp.tv_sec;
2514 FDH_PWRITE(fdP, (char *)&header.volumeInfo,
2515 sizeof(header.volumeInfo), 0);
2516 if (nBytes != sizeof(header.volumeInfo)) {
2519 ("Unable to write volume header file (%s) (errno = %d)\n",
2520 sp->description, errno);
2521 Abort("Unable to write entire volume header file (%s)\n",
2525 nBytes = FDH_PWRITE(fdP, (char *)&sp->stamp, sizeof(sp->stamp), 0);
2526 if (nBytes != sizeof(sp->stamp)) {
2529 ("Unable to write version stamp in volume header file (%s) (errno = %d)\n",
2530 sp->description, errno);
2532 ("Unable to write entire version stamp in volume header file (%s)\n",
2537 FDH_REALLYCLOSE(fdP);
2539 if (sp->inodeType == VI_VOLINFO) {
2540 salvinfo->VolInfo = header.volumeInfo;
2544 if (salvinfo->VolInfo.updateDate) {
2545 strcpy(update, TimeStamp(salvinfo->VolInfo.updateDate, 0));
2547 Log("%s (%u) %supdated %s\n", salvinfo->VolInfo.name,
2548 salvinfo->VolInfo.id,
2549 (Testing ? "it would have been " : ""), update);
2551 strcpy(update, TimeStamp(salvinfo->VolInfo.creationDate, 0));
2553 Log("%s (%u) not updated (created %s)\n",
2554 salvinfo->VolInfo.name, salvinfo->VolInfo.id, update);
2564 SalvageVnodes(struct SalvInfo *salvinfo,
2565 struct InodeSummary *rwIsp,
2566 struct InodeSummary *thisIsp,
2567 struct ViceInodeInfo *inodes, int check)
2569 int ilarge, ismall, ioffset, RW, nInodes;
2570 ioffset = rwIsp->index + rwIsp->nSpecialInodes; /* first inode */
2573 RW = (rwIsp == thisIsp);
2574 nInodes = (rwIsp->nInodes - rwIsp->nSpecialInodes);
2576 SalvageIndex(salvinfo, thisIsp->volSummary->header.smallVnodeIndex, vSmall, RW,
2577 &inodes[ioffset], nInodes, thisIsp->volSummary, check);
2578 if (check && ismall == -1)
2581 SalvageIndex(salvinfo, thisIsp->volSummary->header.largeVnodeIndex, vLarge, RW,
2582 &inodes[ioffset], nInodes, thisIsp->volSummary, check);
2583 return (ilarge == 0 && ismall == 0 ? 0 : -1);
2587 SalvageIndex(struct SalvInfo *salvinfo, Inode ino, VnodeClass class, int RW,
2588 struct ViceInodeInfo *ip, int nInodes,
2589 struct VolumeSummary *volSummary, int check)
2591 char buf[SIZEOF_LARGEDISKVNODE];
2592 struct VnodeDiskObject *vnode = (struct VnodeDiskObject *)buf;
2594 StreamHandle_t *file;
2595 struct VnodeClassInfo *vcp;
2597 afs_sfsize_t nVnodes;
2598 afs_fsize_t vnodeLength;
2600 afs_ino_str_t stmp1, stmp2;
2604 IH_INIT(handle, salvinfo->fileSysDevice, volSummary->header.parent, ino);
2605 fdP = IH_OPEN(handle);
2606 osi_Assert(fdP != NULL);
2607 file = FDH_FDOPEN(fdP, "r+");
2608 osi_Assert(file != NULL);
2609 vcp = &VnodeClassInfo[class];
2610 size = OS_SIZE(fdP->fd_fd);
2611 osi_Assert(size != -1);
2612 nVnodes = (size / vcp->diskSize) - 1;
2614 osi_Assert((nVnodes + 1) * vcp->diskSize == size);
2615 osi_Assert(STREAM_ASEEK(file, vcp->diskSize) == 0);
2619 for (vnodeIndex = 0;
2620 nVnodes && STREAM_READ(vnode, vcp->diskSize, 1, file) == 1;
2621 nVnodes--, vnodeIndex++) {
2622 if (vnode->type != vNull) {
2623 int vnodeChanged = 0;
2624 int vnodeNumber = bitNumberToVnodeNumber(vnodeIndex, class);
2625 if (VNDISK_GET_INO(vnode) == 0) {
2627 /* Log("### DEBUG ### Deleted Vnode with 0 inode (vnode %d)\n", vnodeNumber); */
2628 memset(vnode, 0, vcp->diskSize);
2632 if (vcp->magic != vnode->vnodeMagic) {
2633 /* bad magic #, probably partially created vnode */
2635 Log("Partially allocated vnode %d: bad magic (is %lx should be %lx)\n",
2636 vnodeNumber, afs_printable_uint32_lu(vnode->vnodeMagic),
2637 afs_printable_uint32_lu(vcp->magic));
2638 memset(vnode, 0, vcp->diskSize);
2642 Log("Partially allocated vnode %d deleted.\n",
2644 memset(vnode, 0, vcp->diskSize);
2648 /* ****** Should do a bit more salvage here: e.g. make sure
2649 * vnode type matches what it should be given the index */
2650 while (nInodes && ip->u.vnode.vnodeNumber < vnodeNumber) {
2651 /* if (vnodeIdToClass(ip->u.vnode.vnodeNumber) == class && RW) {
2652 * Log("Inode %d: says it belongs to non-existing vnode %d\n",
2653 * ip->inodeNumber, ip->u.vnode.vnodeNumber);
2660 while (nInodes && ip->u.vnode.vnodeNumber == vnodeNumber) {
2661 /* The following doesn't work, because the version number
2662 * is not maintained correctly by the file server */
2663 /*if (vnode->uniquifier == ip->u.vnode.vnodeUniquifier &&
2664 * vnode->dataVersion == ip->u.vnode.inodeDataVersion)
2666 if (VNDISK_GET_INO(vnode) == ip->inodeNumber)
2672 /* For RW volume, look for vnode with matching inode number;
2673 * if no such match, take the first determined by our sort
2675 struct ViceInodeInfo *lip = ip;
2676 int lnInodes = nInodes;
2678 && lip->u.vnode.vnodeNumber == vnodeNumber) {
2679 if (VNDISK_GET_INO(vnode) == lip->inodeNumber) {
2688 if (nInodes && ip->u.vnode.vnodeNumber == vnodeNumber) {
2689 /* "Matching" inode */
2693 vu = vnode->uniquifier;
2694 iu = ip->u.vnode.vnodeUniquifier;
2695 vd = vnode->dataVersion;
2696 id = ip->u.vnode.inodeDataVersion;
2698 * Because of the possibility of the uniquifier overflows (> 4M)
2699 * we compare them modulo the low 22-bits; we shouldn't worry
2700 * about mismatching since they shouldn't to many old
2701 * uniquifiers of the same vnode...
2703 if (IUnique(vu) != IUnique(iu)) {
2705 Log("Vnode %u: vnode.unique, %u, does not match inode unique, %u; fixed, but status will be wrong\n", vnodeNumber, IUnique(vu), IUnique(iu));
2708 vnode->uniquifier = iu;
2709 #ifdef AFS_3DISPARES
2710 vnode->dataVersion = (id >= vd ?
2713 1887437 ? vd : id) :
2716 1887437 ? id : vd));
2718 #if defined(AFS_SGI_EXMAG)
2719 vnode->dataVersion = (id >= vd ?
2722 15099494 ? vd : id) :
2725 15099494 ? id : vd));
2727 vnode->dataVersion = (id > vd ? id : vd);
2728 #endif /* AFS_SGI_EXMAG */
2729 #endif /* AFS_3DISPARES */
2732 /* don't bother checking for vd > id any more, since
2733 * partial file transfers always result in this state,
2734 * and you can't do much else anyway (you've already
2735 * found the best data you can) */
2736 #ifdef AFS_3DISPARES
2737 if (!vnodeIsDirectory(vnodeNumber)
2738 && ((vd < id && (id - vd) < 1887437)
2739 || ((vd > id && (vd - id) > 1887437)))) {
2741 #if defined(AFS_SGI_EXMAG)
2742 if (!vnodeIsDirectory(vnodeNumber)
2743 && ((vd < id && (id - vd) < 15099494)
2744 || ((vd > id && (vd - id) > 15099494)))) {
2746 if (!vnodeIsDirectory(vnodeNumber) && vd < id) {
2747 #endif /* AFS_SGI_EXMAG */
2750 Log("Vnode %d: version < inode version; fixed (old status)\n", vnodeNumber);
2751 vnode->dataVersion = id;
2756 if (ip->inodeNumber != VNDISK_GET_INO(vnode)) {
2759 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);
2761 VNDISK_SET_INO(vnode, ip->inodeNumber);
2766 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);
2768 VNDISK_SET_INO(vnode, ip->inodeNumber);
2771 VNDISK_GET_LEN(vnodeLength, vnode);
2772 if (ip->byteCount != vnodeLength) {
2775 Log("Vnode %d: length incorrect; (is %llu should be %llu)\n", vnodeNumber, (afs_uintmax_t) vnodeLength, (afs_uintmax_t) ip->byteCount);
2780 Log("Vnode %d: length incorrect; changed from %llu to %llu\n", vnodeNumber, (afs_uintmax_t) vnodeLength, (afs_uintmax_t) ip->byteCount);
2781 VNDISK_SET_LEN(vnode, ip->byteCount);
2785 ip->linkCount--; /* Keep the inode around */
2788 } else { /* no matching inode */
2790 if (VNDISK_GET_INO(vnode) != 0
2791 || vnode->type == vDirectory) {
2792 /* No matching inode--get rid of the vnode */
2794 if (VNDISK_GET_INO(vnode)) {
2796 Log("Vnode %d (unique %u): corresponding inode %s is missing\n", vnodeNumber, vnode->uniquifier, PrintInode(stmp, VNDISK_GET_INO(vnode)));
2800 Log("Vnode %d (unique %u): bad directory vnode (no inode number listed)\n", vnodeNumber, vnode->uniquifier);
2805 if (VNDISK_GET_INO(vnode)) {
2807 time_t serverModifyTime = vnode->serverModifyTime;
2808 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));
2812 time_t serverModifyTime = vnode->serverModifyTime;
2813 Log("Vnode %d (unique %u): bad directory vnode (no inode number listed); vnode deleted, vnode mod time=%s", vnodeNumber, vnode->uniquifier, ctime(&serverModifyTime));
2816 memset(vnode, 0, vcp->diskSize);
2819 /* Should not reach here becuase we checked for
2820 * (inodeNumber == 0) above. And where we zero the vnode,
2821 * we also goto vnodeDone.
2825 while (nInodes && ip->u.vnode.vnodeNumber == vnodeNumber) {
2829 } /* VNDISK_GET_INO(vnode) != 0 */
2831 osi_Assert(!(vnodeChanged && check));
2832 if (vnodeChanged && !Testing) {
2833 osi_Assert(IH_IWRITE
2834 (handle, vnodeIndexOffset(vcp, vnodeNumber),
2835 (char *)vnode, vcp->diskSize)
2837 salvinfo->VolumeChanged = 1; /* For break call back */
2848 struct VnodeEssence *
2849 CheckVnodeNumber(struct SalvInfo *salvinfo, VnodeId vnodeNumber)
2852 struct VnodeInfo *vip;
2855 class = vnodeIdToClass(vnodeNumber);
2856 vip = &salvinfo->vnodeInfo[class];
2857 offset = vnodeIdToBitNumber(vnodeNumber);
2858 return (offset >= vip->nVnodes ? NULL : &vip->vnodes[offset]);
2862 CopyOnWrite(struct SalvInfo *salvinfo, struct DirSummary *dir)
2864 /* Copy the directory unconditionally if we are going to change it:
2865 * not just if was cloned.
2867 struct VnodeDiskObject vnode;
2868 struct VnodeClassInfo *vcp = &VnodeClassInfo[vLarge];
2869 Inode oldinode, newinode;
2872 if (dir->copied || Testing)
2874 DFlush(); /* Well justified paranoia... */
2877 IH_IREAD(salvinfo->vnodeInfo[vLarge].handle,
2878 vnodeIndexOffset(vcp, dir->vnodeNumber), (char *)&vnode,
2880 osi_Assert(code == sizeof(vnode));
2881 oldinode = VNDISK_GET_INO(&vnode);
2882 /* Increment the version number by a whole lot to avoid problems with
2883 * clients that were promised new version numbers--but the file server
2884 * crashed before the versions were written to disk.
2887 IH_CREATE(dir->ds_linkH, salvinfo->fileSysDevice, salvinfo->fileSysPath, 0, dir->rwVid,
2888 dir->vnodeNumber, vnode.uniquifier, vnode.dataVersion +=
2890 osi_Assert(VALID_INO(newinode));
2891 osi_Assert(CopyInode(salvinfo->fileSysDevice, oldinode, newinode, dir->rwVid) == 0);
2893 VNDISK_SET_INO(&vnode, newinode);
2895 IH_IWRITE(salvinfo->vnodeInfo[vLarge].handle,
2896 vnodeIndexOffset(vcp, dir->vnodeNumber), (char *)&vnode,
2898 osi_Assert(code == sizeof(vnode));
2900 SetSalvageDirHandle(&dir->dirHandle, dir->dirHandle.dirh_handle->ih_vid,
2901 salvinfo->fileSysDevice, newinode,
2902 &salvinfo->VolumeChanged);
2903 /* Don't delete the original inode right away, because the directory is
2904 * still being scanned.
2910 * This function should either successfully create a new dir, or give up
2911 * and leave things the way they were. In particular, if it fails to write
2912 * the new dir properly, it should return w/o changing the reference to the
2916 CopyAndSalvage(struct SalvInfo *salvinfo, struct DirSummary *dir)
2918 struct VnodeDiskObject vnode;
2919 struct VnodeClassInfo *vcp = &VnodeClassInfo[vLarge];
2920 Inode oldinode, newinode;
2925 afs_int32 parentUnique = 1;
2926 struct VnodeEssence *vnodeEssence;
2931 Log("Salvaging directory %u...\n", dir->vnodeNumber);
2933 IH_IREAD(salvinfo->vnodeInfo[vLarge].handle,
2934 vnodeIndexOffset(vcp, dir->vnodeNumber), (char *)&vnode,
2936 osi_Assert(lcode == sizeof(vnode));
2937 oldinode = VNDISK_GET_INO(&vnode);
2938 /* Increment the version number by a whole lot to avoid problems with
2939 * clients that were promised new version numbers--but the file server
2940 * crashed before the versions were written to disk.
2943 IH_CREATE(dir->ds_linkH, salvinfo->fileSysDevice, salvinfo->fileSysPath, 0, dir->rwVid,
2944 dir->vnodeNumber, vnode.uniquifier, vnode.dataVersion +=
2946 osi_Assert(VALID_INO(newinode));
2947 SetSalvageDirHandle(&newdir, dir->rwVid, salvinfo->fileSysDevice, newinode,
2948 &salvinfo->VolumeChanged);
2950 /* Assign . and .. vnode numbers from dir and vnode.parent.
2951 * The uniquifier for . is in the vnode.
2952 * The uniquifier for .. might be set to a bogus value of 1 and
2953 * the salvager will later clean it up.
2955 if (vnode.parent && (vnodeEssence = CheckVnodeNumber(salvinfo, vnode.parent))) {
2956 parentUnique = (vnodeEssence->unique ? vnodeEssence->unique : 1);
2959 DirSalvage(&dir->dirHandle, &newdir, dir->vnodeNumber,
2961 (vnode.parent ? vnode.parent : dir->vnodeNumber),
2966 /* didn't really build the new directory properly, let's just give up. */
2967 code = IH_DEC(dir->ds_linkH, newinode, dir->rwVid);
2968 Log("Directory salvage returned code %d, continuing.\n", code);
2970 Log("also failed to decrement link count on new inode");
2974 Log("Checking the results of the directory salvage...\n");
2975 if (!DirOK(&newdir)) {
2976 Log("Directory salvage failed!!!; restoring old version of the directory.\n");
2977 code = IH_DEC(dir->ds_linkH, newinode, dir->rwVid);
2978 osi_Assert(code == 0);
2982 VNDISK_SET_INO(&vnode, newinode);
2983 length = afs_dir_Length(&newdir);
2984 VNDISK_SET_LEN(&vnode, length);
2986 IH_IWRITE(salvinfo->vnodeInfo[vLarge].handle,
2987 vnodeIndexOffset(vcp, dir->vnodeNumber), (char *)&vnode,
2989 osi_Assert(lcode == sizeof(vnode));
2992 nt_sync(salvinfo->fileSysDevice);
2994 sync(); /* this is slow, but hopefully rarely called. We don't have
2995 * an open FD on the file itself to fsync.
2999 salvinfo->vnodeInfo[vLarge].handle->ih_synced = 1;
3001 /* make sure old directory file is really closed */
3002 fdP = IH_OPEN(dir->dirHandle.dirh_handle);
3003 FDH_REALLYCLOSE(fdP);
3005 code = IH_DEC(dir->ds_linkH, oldinode, dir->rwVid);
3006 osi_Assert(code == 0);
3007 dir->dirHandle = newdir;
3011 * arguments for JudgeEntry.
3013 struct judgeEntry_params {
3014 struct DirSummary *dir; /**< directory we're examining entries in */
3015 struct SalvInfo *salvinfo; /**< SalvInfo for the current salvage job */
3019 JudgeEntry(void *arock, char *name, afs_int32 vnodeNumber,
3022 struct judgeEntry_params *params = arock;
3023 struct DirSummary *dir = params->dir;
3024 struct SalvInfo *salvinfo = params->salvinfo;
3025 struct VnodeEssence *vnodeEssence;
3026 afs_int32 dirOrphaned, todelete;
3028 dirOrphaned = IsVnodeOrphaned(salvinfo, dir->vnodeNumber);
3030 vnodeEssence = CheckVnodeNumber(salvinfo, vnodeNumber);
3031 if (vnodeEssence == NULL) {
3033 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);
3036 CopyOnWrite(salvinfo, dir);
3037 osi_Assert(afs_dir_Delete(&dir->dirHandle, name) == 0);
3042 #ifndef AFS_NAMEI_ENV
3043 /* On AIX machines, don't allow entries to point to inode 0. That is a special
3044 * mount inode for the partition. If this inode were deleted, it would crash
3047 if (vnodeEssence->InodeNumber == 0) {
3048 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"));
3050 CopyOnWrite(salvinfo, dir);
3051 osi_Assert(Delete(&dir->dirHandle, name) == 0);
3058 if (!(vnodeNumber & 1) && !Showmode
3059 && !(vnodeEssence->count || vnodeEssence->unique
3060 || vnodeEssence->modeBits)) {
3061 Log("dir vnode %u: invalid entry: %s" OS_DIRSEP "%s (vnode %u, unique %u)%s\n",
3062 dir->vnodeNumber, (dir->name ? dir->name : "??"), name,
3063 vnodeNumber, unique,
3064 ((!unique) ? (Testing ? "-- would have deleted" : " -- deleted") :
3068 CopyOnWrite(salvinfo, dir);
3069 osi_Assert(afs_dir_Delete(&dir->dirHandle, name) == 0);
3075 /* Check if the Uniquifiers match. If not, change the directory entry
3076 * so its unique matches the vnode unique. Delete if the unique is zero
3077 * or if the directory is orphaned.
3079 if (!vnodeEssence->unique || (vnodeEssence->unique) != unique) {
3080 if (!vnodeEssence->unique
3081 && ((strcmp(name, "..") == 0) || (strcmp(name, ".") == 0))) {
3082 /* This is an orphaned directory. Don't delete the . or ..
3083 * entry. Otherwise, it will get created in the next
3084 * salvage and deleted again here. So Just skip it.
3089 todelete = ((!vnodeEssence->unique || dirOrphaned) ? 1 : 0);
3092 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")));
3096 fid.Vnode = vnodeNumber;
3097 fid.Unique = vnodeEssence->unique;
3098 CopyOnWrite(salvinfo, dir);
3099 osi_Assert(afs_dir_Delete(&dir->dirHandle, name) == 0);
3101 osi_Assert(afs_dir_Create(&dir->dirHandle, name, &fid) == 0);
3104 return 0; /* no need to continue */
3107 if (strcmp(name, ".") == 0) {
3108 if (dir->vnodeNumber != vnodeNumber || (dir->unique != unique)) {
3110 Log("directory vnode %u.%u: bad '.' entry (was %u.%u); fixed\n", dir->vnodeNumber, dir->unique, vnodeNumber, unique);
3113 CopyOnWrite(salvinfo, dir);
3114 osi_Assert(afs_dir_Delete(&dir->dirHandle, ".") == 0);
3115 fid.Vnode = dir->vnodeNumber;
3116 fid.Unique = dir->unique;
3117 osi_Assert(afs_dir_Create(&dir->dirHandle, ".", &fid) == 0);
3118 vnodeNumber = fid.Vnode; /* Get the new Essence */
3119 unique = fid.Unique;
3120 vnodeEssence = CheckVnodeNumber(salvinfo, vnodeNumber);
3124 } else if (strcmp(name, "..") == 0) {
3127 struct VnodeEssence *dotdot;
3128 pa.Vnode = dir->parent;
3129 dotdot = CheckVnodeNumber(salvinfo, pa.Vnode);
3130 osi_Assert(dotdot != NULL); /* XXX Should not be assert */
3131 pa.Unique = dotdot->unique;
3133 pa.Vnode = dir->vnodeNumber;
3134 pa.Unique = dir->unique;
3136 if ((pa.Vnode != vnodeNumber) || (pa.Unique != unique)) {
3138 Log("directory vnode %u.%u: bad '..' entry (was %u.%u); fixed\n", dir->vnodeNumber, dir->unique, vnodeNumber, unique);
3140 CopyOnWrite(salvinfo, dir);
3141 osi_Assert(afs_dir_Delete(&dir->dirHandle, "..") == 0);
3142 osi_Assert(afs_dir_Create(&dir->dirHandle, "..", &pa) == 0);
3145 vnodeNumber = pa.Vnode; /* Get the new Essence */
3147 vnodeEssence = CheckVnodeNumber(salvinfo, vnodeNumber);
3149 dir->haveDotDot = 1;
3150 } else if (strncmp(name, ".__afs", 6) == 0) {
3152 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);
3155 CopyOnWrite(salvinfo, dir);
3156 osi_Assert(afs_dir_Delete(&dir->dirHandle, name) == 0);
3158 vnodeEssence->claimed = 0; /* Not claimed: Orphaned */
3159 vnodeEssence->todelete = 1; /* Will later delete vnode and decr inode */
3162 if (ShowSuid && (vnodeEssence->modeBits & 06000))
3163 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);
3164 if (/* ShowMounts && */ (vnodeEssence->type == vSymlink)
3165 && !(vnodeEssence->modeBits & 0111)) {
3166 afs_sfsize_t nBytes;
3172 IH_INIT(ihP, salvinfo->fileSysDevice, dir->dirHandle.dirh_handle->ih_vid,
3173 vnodeEssence->InodeNumber);
3176 Log("ERROR %s could not open mount point vnode %u\n", dir->vname, vnodeNumber);
3180 size = FDH_SIZE(fdP);
3182 Log("ERROR %s mount point has invalid size %d, vnode %u\n", dir->vname, (int)size, vnodeNumber);
3183 FDH_REALLYCLOSE(fdP);
3190 nBytes = FDH_PREAD(fdP, buf, size, 0);
3191 if (nBytes == size) {
3193 if ( (*buf != '#' && *buf != '%') || buf[strlen(buf)-1] != '.' ) {
3194 Log("Volume %u (%s) mount point %s" OS_DIRSEP "%s to '%s' invalid, %s to symbolic link\n",
3195 dir->dirHandle.dirh_handle->ih_vid, dir->vname, dir->name ? dir->name : "??", name, buf,
3196 Testing ? "would convert" : "converted");
3197 vnodeEssence->modeBits |= 0111;
3198 vnodeEssence->changed = 1;
3199 } else if (ShowMounts) Log("In volume %u (%s) found mountpoint %s" OS_DIRSEP "%s to '%s'\n",
3200 dir->dirHandle.dirh_handle->ih_vid, dir->vname,
3201 dir->name ? dir->name : "??", name, buf);
3203 Log("Volume %s cound not read mount point vnode %u size %d code %d\n",
3204 dir->vname, vnodeNumber, (int)size, (int)nBytes);
3206 FDH_REALLYCLOSE(fdP);
3209 if (ShowRootFiles && vnodeEssence->owner == 0 && vnodeNumber != 1)
3210 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);
3211 if (vnodeIdToClass(vnodeNumber) == vLarge
3212 && vnodeEssence->name == NULL) {
3214 if ((n = (char *)malloc(strlen(name) + 1)))
3216 vnodeEssence->name = n;
3219 /* The directory entry points to the vnode. Check to see if the
3220 * vnode points back to the directory. If not, then let the
3221 * directory claim it (else it might end up orphaned). Vnodes
3222 * already claimed by another directory are deleted from this
3223 * directory: hardlinks to the same vnode are not allowed
3224 * from different directories.
3226 if (vnodeEssence->parent != dir->vnodeNumber) {
3227 if (!vnodeEssence->claimed && !dirOrphaned && vnodeNumber != 1) {
3228 /* Vnode does not point back to this directory.
3229 * Orphaned dirs cannot claim a file (it may belong to
3230 * another non-orphaned dir).
3233 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);
3235 vnodeEssence->parent = dir->vnodeNumber;
3236 vnodeEssence->changed = 1;
3238 /* Vnode was claimed by another directory */
3241 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 " : ""));
3242 } else if (vnodeNumber == 1) {
3243 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 " : ""));
3245 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 " : ""));
3249 CopyOnWrite(salvinfo, dir);
3250 osi_Assert(afs_dir_Delete(&dir->dirHandle, name) == 0);
3255 /* This directory claims the vnode */
3256 vnodeEssence->claimed = 1;
3258 vnodeEssence->count--;
3263 DistilVnodeEssence(struct SalvInfo *salvinfo, VolumeId rwVId,
3264 VnodeClass class, Inode ino, Unique * maxu)
3266 struct VnodeInfo *vip = &salvinfo->vnodeInfo[class];
3267 struct VnodeClassInfo *vcp = &VnodeClassInfo[class];
3268 char buf[SIZEOF_LARGEDISKVNODE];
3269 struct VnodeDiskObject *vnode = (struct VnodeDiskObject *)buf;
3271 StreamHandle_t *file;
3276 IH_INIT(vip->handle, salvinfo->fileSysDevice, rwVId, ino);
3277 fdP = IH_OPEN(vip->handle);
3278 osi_Assert(fdP != NULL);
3279 file = FDH_FDOPEN(fdP, "r+");
3280 osi_Assert(file != NULL);
3281 size = OS_SIZE(fdP->fd_fd);
3282 osi_Assert(size != -1);
3283 vip->nVnodes = (size / vcp->diskSize) - 1;
3284 if (vip->nVnodes > 0) {
3285 osi_Assert((vip->nVnodes + 1) * vcp->diskSize == size);
3286 osi_Assert(STREAM_ASEEK(file, vcp->diskSize) == 0);
3287 osi_Assert((vip->vnodes = (struct VnodeEssence *)
3288 calloc(vip->nVnodes, sizeof(struct VnodeEssence))) != NULL);
3289 if (class == vLarge) {
3290 osi_Assert((vip->inodes = (Inode *)
3291 calloc(vip->nVnodes, sizeof(Inode))) != NULL);
3300 vip->volumeBlockCount = vip->nAllocatedVnodes = 0;
3301 for (vnodeIndex = 0, nVnodes = vip->nVnodes;
3302 nVnodes && STREAM_READ(vnode, vcp->diskSize, 1, file) == 1;
3303 nVnodes--, vnodeIndex++) {
3304 if (vnode->type != vNull) {
3305 struct VnodeEssence *vep = &vip->vnodes[vnodeIndex];
3306 afs_fsize_t vnodeLength;
3307 vip->nAllocatedVnodes++;
3308 vep->count = vnode->linkCount;
3309 VNDISK_GET_LEN(vnodeLength, vnode);
3310 vep->blockCount = nBlocks(vnodeLength);
3311 vip->volumeBlockCount += vep->blockCount;
3312 vep->parent = vnode->parent;
3313 vep->unique = vnode->uniquifier;
3314 if (*maxu < vnode->uniquifier)
3315 *maxu = vnode->uniquifier;
3316 vep->modeBits = vnode->modeBits;
3317 vep->InodeNumber = VNDISK_GET_INO(vnode);
3318 vep->type = vnode->type;
3319 vep->author = vnode->author;
3320 vep->owner = vnode->owner;
3321 vep->group = vnode->group;
3322 if (vnode->type == vDirectory) {
3323 if (class != vLarge) {
3324 VnodeId vnodeNumber = bitNumberToVnodeNumber(vnodeIndex, class);
3325 vip->nAllocatedVnodes--;
3326 memset(vnode, 0, sizeof(*vnode));
3327 IH_IWRITE(salvinfo->vnodeInfo[vSmall].handle,
3328 vnodeIndexOffset(vcp, vnodeNumber),
3329 (char *)&vnode, sizeof(vnode));
3330 salvinfo->VolumeChanged = 1;
3332 vip->inodes[vnodeIndex] = VNDISK_GET_INO(vnode);
3341 GetDirName(struct SalvInfo *salvinfo, VnodeId vnode, struct VnodeEssence *vp,
3344 struct VnodeEssence *parentvp;
3350 if (vp->parent && vp->name && (parentvp = CheckVnodeNumber(salvinfo, vp->parent))
3351 && GetDirName(salvinfo, vp->parent, parentvp, path)) {
3352 strcat(path, OS_DIRSEP);
3353 strcat(path, vp->name);
3359 /* To determine if a vnode is orhpaned or not, the vnode and all its parent
3360 * vnodes must be "claimed". The vep->claimed flag is set in JudgeEntry().
3363 IsVnodeOrphaned(struct SalvInfo *salvinfo, VnodeId vnode)
3365 struct VnodeEssence *vep;
3368 return (1); /* Vnode zero does not exist */
3370 return (0); /* The root dir vnode is always claimed */
3371 vep = CheckVnodeNumber(salvinfo, vnode); /* Get the vnode essence */
3372 if (!vep || !vep->claimed)
3373 return (1); /* Vnode is not claimed - it is orphaned */
3375 return (IsVnodeOrphaned(salvinfo, vep->parent));
3379 SalvageDir(struct SalvInfo *salvinfo, char *name, VolumeId rwVid,
3380 struct VnodeInfo *dirVnodeInfo, IHandle_t * alinkH, int i,
3381 struct DirSummary *rootdir, int *rootdirfound)
3383 static struct DirSummary dir;
3384 static struct DirHandle dirHandle;
3385 struct VnodeEssence *parent;
3386 static char path[MAXPATHLEN];
3389 if (dirVnodeInfo->vnodes[i].salvaged)
3390 return; /* already salvaged */
3393 dirVnodeInfo->vnodes[i].salvaged = 1;
3395 if (dirVnodeInfo->inodes[i] == 0)
3396 return; /* Not allocated to a directory */
3398 if (bitNumberToVnodeNumber(i, vLarge) == 1) {
3399 if (dirVnodeInfo->vnodes[i].parent) {
3400 Log("Bad parent, vnode 1; %s...\n",
3401 (Testing ? "skipping" : "salvaging"));
3402 dirVnodeInfo->vnodes[i].parent = 0;
3403 dirVnodeInfo->vnodes[i].changed = 1;
3406 parent = CheckVnodeNumber(salvinfo, dirVnodeInfo->vnodes[i].parent);
3407 if (parent && parent->salvaged == 0)
3408 SalvageDir(salvinfo, name, rwVid, dirVnodeInfo, alinkH,
3409 vnodeIdToBitNumber(dirVnodeInfo->vnodes[i].parent),
3410 rootdir, rootdirfound);
3413 dir.vnodeNumber = bitNumberToVnodeNumber(i, vLarge);
3414 dir.unique = dirVnodeInfo->vnodes[i].unique;
3417 dir.parent = dirVnodeInfo->vnodes[i].parent;
3418 dir.haveDot = dir.haveDotDot = 0;
3419 dir.ds_linkH = alinkH;
3420 SetSalvageDirHandle(&dir.dirHandle, dir.rwVid, salvinfo->fileSysDevice,
3421 dirVnodeInfo->inodes[i], &salvinfo->VolumeChanged);
3423 dirok = ((RebuildDirs && !Testing) ? 0 : DirOK(&dir.dirHandle));
3426 Log("Directory bad, vnode %u; %s...\n", dir.vnodeNumber,
3427 (Testing ? "skipping" : "salvaging"));
3430 CopyAndSalvage(salvinfo, &dir);
3432 dirVnodeInfo->inodes[i] = dir.dirHandle.dirh_inode;
3435 dirHandle = dir.dirHandle;
3438 GetDirName(salvinfo, bitNumberToVnodeNumber(i, vLarge),
3439 &dirVnodeInfo->vnodes[i], path);
3442 /* If enumeration failed for random reasons, we will probably delete
3443 * too much stuff, so we guard against this instead.
3445 struct judgeEntry_params judge_params;
3446 judge_params.salvinfo = salvinfo;
3447 judge_params.dir = &dir;
3449 osi_Assert(afs_dir_EnumerateDir(&dirHandle, JudgeEntry,
3450 &judge_params) == 0);
3453 /* Delete the old directory if it was copied in order to salvage.
3454 * CopyOnWrite has written the new inode # to the disk, but we still
3455 * have the old one in our local structure here. Thus, we idec the
3459 if (dir.copied && !Testing) {
3460 code = IH_DEC(dir.ds_linkH, dirHandle.dirh_handle->ih_ino, rwVid);
3461 osi_Assert(code == 0);
3462 dirVnodeInfo->inodes[i] = dir.dirHandle.dirh_inode;
3465 /* Remember rootdir DirSummary _after_ it has been judged */
3466 if (dir.vnodeNumber == 1 && dir.unique == 1) {
3467 memcpy(rootdir, &dir, sizeof(struct DirSummary));
3475 * Get a new FID that can be used to create a new file.
3477 * @param[in] volHeader vol header for the volume
3478 * @param[in] class what type of vnode we'll be creating (vLarge or vSmall)
3479 * @param[out] afid the FID that we can use (only Vnode and Unique are set)
3480 * @param[inout] maxunique max uniquifier for all vnodes in the volume;
3481 * updated to the new max unique if we create a new
3485 GetNewFID(struct SalvInfo *salvinfo, VolumeDiskData *volHeader,
3486 VnodeClass class, AFSFid *afid, Unique *maxunique)
3489 for (i = 0; i < salvinfo->vnodeInfo[class].nVnodes; i++) {
3490 if (salvinfo->vnodeInfo[class].vnodes[i].type == vNull) {
3494 if (i == salvinfo->vnodeInfo[class].nVnodes) {
3495 /* no free vnodes; make a new one */
3496 salvinfo->vnodeInfo[class].nVnodes++;
3497 salvinfo->vnodeInfo[class].vnodes =
3498 realloc(salvinfo->vnodeInfo[class].vnodes,
3499 sizeof(struct VnodeEssence) * (i+1));
3501 salvinfo->vnodeInfo[class].vnodes[i].type = vNull;
3504 afid->Vnode = bitNumberToVnodeNumber(i, class);
3506 if (volHeader->uniquifier < (*maxunique + 1)) {
3507 /* header uniq is bad; it will get bumped by 2000 later */
3508 afid->Unique = *maxunique + 1 + 2000;
3511 /* header uniq seems okay; just use that */
3512 afid->Unique = *maxunique = volHeader->uniquifier++;
3517 * Create a vnode for a README file explaining not to use a recreated-root vol.
3519 * @param[in] volHeader vol header for the volume
3520 * @param[in] alinkH ihandle for i/o for the volume
3521 * @param[in] vid volume id
3522 * @param[inout] maxunique max uniquifier for all vnodes in the volume;
3523 * updated to the new max unique if we create a new
3525 * @param[out] afid FID for the new readme vnode
3526 * @param[out] ainode the inode for the new readme file
3528 * @return operation status
3533 CreateReadme(struct SalvInfo *salvinfo, VolumeDiskData *volHeader,
3534 IHandle_t *alinkH, VolumeId vid, Unique *maxunique, AFSFid *afid,
3538 struct VnodeDiskObject *rvnode = NULL;
3540 IHandle_t *readmeH = NULL;
3541 struct VnodeEssence *vep;
3543 time_t now = time(NULL);
3545 /* Try to make the note brief, but informative. Only administrators should
3546 * be able to read this file at first, so we can hopefully assume they
3547 * know what AFS is, what a volume is, etc. */
3549 "This volume has been salvaged, but has lost its original root directory.\n"
3550 "The root directory that exists now has been recreated from orphan files\n"
3551 "from the rest of the volume. This recreated root directory may interfere\n"
3552 "with old cached data on clients, and there is no way the salvager can\n"
3553 "reasonably prevent that. So, it is recommended that you do not continue to\n"
3554 "use this volume, but only copy the salvaged data to a new volume.\n"
3555 "Continuing to use this volume as it exists now may cause some clients to\n"
3556 "behave oddly when accessing this volume.\n"
3557 "\n\t -- Your friendly neighborhood OpenAFS salvager\n";
3558 /* ^ the person reading this probably just lost some data, so they could
3559 * use some cheering up. */
3561 /* -1 for the trailing NUL */
3562 length = sizeof(readme) - 1;
3564 GetNewFID(salvinfo, volHeader, vSmall, afid, maxunique);
3566 vep = &salvinfo->vnodeInfo[vSmall].vnodes[vnodeIdToBitNumber(afid->Vnode)];
3568 /* create the inode and write the contents */
3569 readmeinode = IH_CREATE(alinkH, salvinfo->fileSysDevice,
3570 salvinfo->fileSysPath, 0, vid,
3571 afid->Vnode, afid->Unique, 1);
3572 if (!VALID_INO(readmeinode)) {
3573 Log("CreateReadme: readme IH_CREATE failed\n");
3577 IH_INIT(readmeH, salvinfo->fileSysDevice, vid, readmeinode);
3578 bytes = IH_IWRITE(readmeH, 0, readme, length);
3579 IH_RELEASE(readmeH);
3581 if (bytes != length) {
3582 Log("CreateReadme: IWRITE failed (%d/%d)\n", (int)bytes,
3583 (int)sizeof(readme));
3587 /* create the vnode and write it out */
3588 rvnode = calloc(1, SIZEOF_SMALLDISKVNODE);
3590 Log("CreateRootDir: error alloc'ing memory\n");
3594 rvnode->type = vFile;
3596 rvnode->modeBits = 0777;
3597 rvnode->linkCount = 1;
3598 VNDISK_SET_LEN(rvnode, length);
3599 rvnode->uniquifier = afid->Unique;
3600 rvnode->dataVersion = 1;
3601 VNDISK_SET_INO(rvnode, readmeinode);
3602 rvnode->unixModifyTime = rvnode->serverModifyTime = now;
3607 rvnode->vnodeMagic = VnodeClassInfo[vSmall].magic;
3609 bytes = IH_IWRITE(salvinfo->vnodeInfo[vSmall].handle,
3610 vnodeIndexOffset(&VnodeClassInfo[vSmall], afid->Vnode),
3611 (char*)rvnode, SIZEOF_SMALLDISKVNODE);
3613 if (bytes != SIZEOF_SMALLDISKVNODE) {
3614 Log("CreateReadme: IH_IWRITE failed (%d/%d)\n", (int)bytes,
3615 (int)SIZEOF_SMALLDISKVNODE);
3619 /* update VnodeEssence for new readme vnode */
3620 salvinfo->vnodeInfo[vSmall].nAllocatedVnodes++;
3622 vep->blockCount = nBlocks(length);
3623 salvinfo->vnodeInfo[vSmall].volumeBlockCount += vep->blockCount;
3624 vep->parent = rvnode->parent;
3625 vep->unique = rvnode->uniquifier;
3626 vep->modeBits = rvnode->modeBits;
3627 vep->InodeNumber = VNDISK_GET_INO(rvnode);
3628 vep->type = rvnode->type;
3629 vep->author = rvnode->author;
3630 vep->owner = rvnode->owner;
3631 vep->group = rvnode->group;
3641 *ainode = readmeinode;
3646 if (IH_DEC(alinkH, readmeinode, vid)) {
3647 Log("CreateReadme (recovery): IH_DEC failed\n");
3659 * create a root dir for a volume that lacks one.
3661 * @param[in] volHeader vol header for the volume
3662 * @param[in] alinkH ihandle for disk access for this volume group
3663 * @param[in] vid volume id we're dealing with
3664 * @param[out] rootdir populated with info about the new root dir
3665 * @param[inout] maxunique max uniquifier for all vnodes in the volume;
3666 * updated to the new max unique if we create a new
3669 * @return operation status
3674 CreateRootDir(struct SalvInfo *salvinfo, VolumeDiskData *volHeader,
3675 IHandle_t *alinkH, VolumeId vid, struct DirSummary *rootdir,
3679 int decroot = 0, decreadme = 0;
3680 AFSFid did, readmeid;
3683 struct VnodeDiskObject *rootvnode = NULL;
3684 struct acl_accessList *ACL;
3687 struct VnodeEssence *vep;
3688 Inode readmeinode = 0;
3689 time_t now = time(NULL);
3691 if (!salvinfo->vnodeInfo[vLarge].vnodes && !salvinfo->vnodeInfo[vSmall].vnodes) {
3692 Log("Not creating new root dir; volume appears to lack any vnodes\n");
3696 if (!salvinfo->vnodeInfo[vLarge].vnodes) {
3697 /* We don't have any large vnodes in the volume; allocate room
3698 * for one so we can recreate the root dir */
3699 salvinfo->vnodeInfo[vLarge].nVnodes = 1;
3700 salvinfo->vnodeInfo[vLarge].vnodes = calloc(1, sizeof(struct VnodeEssence));
3701 salvinfo->vnodeInfo[vLarge].inodes = calloc(1, sizeof(Inode));
3703 osi_Assert(salvinfo->vnodeInfo[vLarge].vnodes);
3704 osi_Assert(salvinfo->vnodeInfo[vLarge].inodes);
3707 vep = &salvinfo->vnodeInfo[vLarge].vnodes[vnodeIdToBitNumber(1)];
3708 ip = &salvinfo->vnodeInfo[vLarge].inodes[vnodeIdToBitNumber(1)];
3709 if (vep->type != vNull) {
3710 Log("Not creating new root dir; existing vnode 1 is non-null\n");
3714 if (CreateReadme(salvinfo, volHeader, alinkH, vid, maxunique, &readmeid,
3715 &readmeinode) != 0) {
3720 /* set the DV to a very high number, so it is unlikely that we collide
3721 * with a cached DV */
3724 rootinode = IH_CREATE(alinkH, salvinfo->fileSysDevice, salvinfo->fileSysPath,
3726 if (!VALID_INO(rootinode)) {
3727 Log("CreateRootDir: IH_CREATE failed\n");
3732 SetSalvageDirHandle(&rootdir->dirHandle, vid, salvinfo->fileSysDevice,
3733 rootinode, &salvinfo->VolumeChanged);
3737 if (afs_dir_MakeDir(&rootdir->dirHandle, (afs_int32*)&did, (afs_int32*)&did)) {
3738 Log("CreateRootDir: MakeDir failed\n");
3741 if (afs_dir_Create(&rootdir->dirHandle, "README.ROOTDIR", &readmeid)) {
3742 Log("CreateRootDir: Create failed\n");
3746 length = afs_dir_Length(&rootdir->dirHandle);
3747 DZap(&rootdir->dirHandle);
3749 /* create the new root dir vnode */
3750 rootvnode = calloc(1, SIZEOF_LARGEDISKVNODE);
3752 Log("CreateRootDir: malloc failed\n");
3756 /* only give 'rl' permissions to 'system:administrators'. We do this to
3757 * try to catch the attention of an administrator, that they should not
3758 * be writing to this directory or continue to use it. */
3759 ACL = VVnodeDiskACL(rootvnode);
3760 ACL->size = sizeof(struct acl_accessList);
3761 ACL->version = ACL_ACLVERSION;
3765 ACL->entries[0].id = -204; /* system:administrators */
3766 ACL->entries[0].rights = PRSFS_READ | PRSFS_LOOKUP;
3768 rootvnode->type = vDirectory;
3769 rootvnode->cloned = 0;
3770 rootvnode->modeBits = 0777;
3771 rootvnode->linkCount = 2;
3772 VNDISK_SET_LEN(rootvnode, length);
3773 rootvnode->uniquifier = 1;
3774 rootvnode->dataVersion = dv;
3775 VNDISK_SET_INO(rootvnode, rootinode);
3776 rootvnode->unixModifyTime = rootvnode->serverModifyTime = now;
3777 rootvnode->author = 0;
3778 rootvnode->owner = 0;
3779 rootvnode->parent = 0;
3780 rootvnode->group = 0;
3781 rootvnode->vnodeMagic = VnodeClassInfo[vLarge].magic;
3783 /* write it out to disk */
3784 bytes = IH_IWRITE(salvinfo->vnodeInfo[vLarge].handle,
3785 vnodeIndexOffset(&VnodeClassInfo[vLarge], 1),
3786 (char*)rootvnode, SIZEOF_LARGEDISKVNODE);
3788 if (bytes != SIZEOF_LARGEDISKVNODE) {
3789 /* just cast to int and don't worry about printing real 64-bit ints;
3790 * a large disk vnode isn't anywhere near the 32-bit limit */
3791 Log("CreateRootDir: IH_IWRITE failed (%d/%d)\n", (int)bytes,
3792 (int)SIZEOF_LARGEDISKVNODE);
3796 /* update VnodeEssence for the new root vnode */
3797 salvinfo->vnodeInfo[vLarge].nAllocatedVnodes++;
3799 vep->blockCount = nBlocks(length);
3800 salvinfo->vnodeInfo[vLarge].volumeBlockCount += vep->blockCount;
3801 vep->parent = rootvnode->parent;
3802 vep->unique = rootvnode->uniquifier;
3803 vep->modeBits = rootvnode->modeBits;
3804 vep->InodeNumber = VNDISK_GET_INO(rootvnode);
3805 vep->type = rootvnode->type;
3806 vep->author = rootvnode->author;
3807 vep->owner = rootvnode->owner;
3808 vep->group = rootvnode->group;
3818 /* update DirSummary for the new root vnode */
3819 rootdir->vnodeNumber = 1;
3820 rootdir->unique = 1;
3821 rootdir->haveDot = 1;
3822 rootdir->haveDotDot = 1;
3823 rootdir->rwVid = vid;
3824 rootdir->copied = 0;
3825 rootdir->parent = 0;
3826 rootdir->name = strdup(".");
3827 rootdir->vname = volHeader->name;
3828 rootdir->ds_linkH = alinkH;
3835 if (decroot && IH_DEC(alinkH, rootinode, vid)) {
3836 Log("CreateRootDir (recovery): IH_DEC (root) failed\n");
3838 if (decreadme && IH_DEC(alinkH, readmeinode, vid)) {
3839 Log("CreateRootDir (recovery): IH_DEC (readme) failed\n");
3849 * salvage a volume group.
3851 * @param[in] salvinfo information for the curent salvage job
3852 * @param[in] rwIsp inode summary for rw volume
3853 * @param[in] alinkH link table inode handle
3855 * @return operation status
3859 SalvageVolume(struct SalvInfo *salvinfo, struct InodeSummary *rwIsp, IHandle_t * alinkH)
3861 /* This routine, for now, will only be called for read-write volumes */
3863 int BlocksInVolume = 0, FilesInVolume = 0;
3865 struct DirSummary rootdir, oldrootdir;
3866 struct VnodeInfo *dirVnodeInfo;
3867 struct VnodeDiskObject vnode;
3868 VolumeDiskData volHeader;
3870 int orphaned, rootdirfound = 0;
3871 Unique maxunique = 0; /* the maxUniquifier from the vnodes */
3872 afs_int32 ofiles = 0, oblocks = 0; /* Number of orphaned files/blocks */
3873 struct VnodeEssence *vep;
3876 afs_sfsize_t nBytes;
3878 VnodeId LFVnode, ThisVnode;
3879 Unique LFUnique, ThisUnique;
3883 vid = rwIsp->volSummary->header.id;
3884 IH_INIT(h, salvinfo->fileSysDevice, vid, rwIsp->volSummary->header.volumeInfo);
3885 nBytes = IH_IREAD(h, 0, (char *)&volHeader, sizeof(volHeader));
3886 osi_Assert(nBytes == sizeof(volHeader));
3887 osi_Assert(volHeader.stamp.magic == VOLUMEINFOMAGIC);
3888 osi_Assert(volHeader.destroyMe != DESTROY_ME);
3889 /* (should not have gotten this far with DESTROY_ME flag still set!) */
3891 DistilVnodeEssence(salvinfo, vid, vLarge,
3892 rwIsp->volSummary->header.largeVnodeIndex, &maxunique);
3893 DistilVnodeEssence(salvinfo, vid, vSmall,
3894 rwIsp->volSummary->header.smallVnodeIndex, &maxunique);
3896 dirVnodeInfo = &salvinfo->vnodeInfo[vLarge];
3897 for (i = 0; i < dirVnodeInfo->nVnodes; i++) {
3898 SalvageDir(salvinfo, volHeader.name, vid, dirVnodeInfo, alinkH, i,
3899 &rootdir, &rootdirfound);
3902 nt_sync(salvinfo->fileSysDevice);
3904 sync(); /* This used to be done lower level, for every dir */
3911 if (!rootdirfound && (orphans == ORPH_ATTACH) && !Testing) {
3913 Log("Cannot find root directory for volume %lu; attempting to create "
3914 "a new one\n", afs_printable_uint32_lu(vid));
3916 code = CreateRootDir(salvinfo, &volHeader, alinkH, vid, &rootdir,
3921 salvinfo->VolumeChanged = 1;
3925 /* Parse each vnode looking for orphaned vnodes and
3926 * connect them to the tree as orphaned (if requested).
3928 oldrootdir = rootdir;
3929 for (class = 0; class < nVNODECLASSES; class++) {
3930 for (v = 0; v < salvinfo->vnodeInfo[class].nVnodes; v++) {
3931 vep = &(salvinfo->vnodeInfo[class].vnodes[v]);
3932 ThisVnode = bitNumberToVnodeNumber(v, class);
3933 ThisUnique = vep->unique;
3935 if ((vep->type == 0) || vep->claimed || ThisVnode == 1)
3936 continue; /* Ignore unused, claimed, and root vnodes */
3938 /* This vnode is orphaned. If it is a directory vnode, then the '..'
3939 * entry in this vnode had incremented the parent link count (In
3940 * JudgeEntry()). We need to go to the parent and decrement that
3941 * link count. But if the parent's unique is zero, then the parent
3942 * link count was not incremented in JudgeEntry().
3944 if (class == vLarge) { /* directory vnode */
3945 pv = vnodeIdToBitNumber(vep->parent);
3946 if (salvinfo->vnodeInfo[vLarge].vnodes[pv].unique != 0) {
3947 if (vep->parent == 1 && newrootdir) {
3948 /* this vnode's parent was the volume root, and
3949 * we just created the volume root. So, the parent
3950 * dir didn't exist during JudgeEntry, so the link
3951 * count was not inc'd there, so don't dec it here.
3957 salvinfo->vnodeInfo[vLarge].vnodes[pv].count++;
3963 continue; /* If no rootdir, can't attach orphaned files */
3965 /* Here we attach orphaned files and directories into the
3966 * root directory, LVVnode, making sure link counts stay correct.
3968 if ((orphans == ORPH_ATTACH) && !vep->todelete && !Testing) {
3969 LFVnode = rootdir.vnodeNumber; /* Lost+Found vnode number */
3970 LFUnique = rootdir.unique; /* Lost+Found uniquifier */
3972 /* Update this orphaned vnode's info. Its parent info and
3973 * link count (do for orphaned directories and files).
3975 vep->parent = LFVnode; /* Parent is the root dir */
3976 vep->unique = LFUnique;
3979 vep->count--; /* Inc link count (root dir will pt to it) */
3981 /* If this orphaned vnode is a directory, change '..'.
3982 * The name of the orphaned dir/file is unknown, so we
3983 * build a unique name. No need to CopyOnWrite the directory
3984 * since it is not connected to tree in BK or RO volume and
3985 * won't be visible there.
3987 if (class == vLarge) {
3991 /* Remove and recreate the ".." entry in this orphaned directory */
3992 SetSalvageDirHandle(&dh, vid, salvinfo->fileSysDevice,
3993 salvinfo->vnodeInfo[class].inodes[v],
3994 &salvinfo->VolumeChanged);
3996 pa.Unique = LFUnique;
3997 osi_Assert(afs_dir_Delete(&dh, "..") == 0);
3998 osi_Assert(afs_dir_Create(&dh, "..", &pa) == 0);
4000 /* The original parent's link count was decremented above.
4001 * Here we increment the new parent's link count.
4003 pv = vnodeIdToBitNumber(LFVnode);
4004 salvinfo->vnodeInfo[vLarge].vnodes[pv].count--;
4008 /* Go to the root dir and add this entry. The link count of the
4009 * root dir was incremented when ".." was created. Try 10 times.
4011 for (j = 0; j < 10; j++) {
4012 pa.Vnode = ThisVnode;
4013 pa.Unique = ThisUnique;
4015 snprintf(npath, sizeof npath, "%s.%u.%u",
4016 ((class == vLarge) ? "__ORPHANDIR__"
4017 : "__ORPHANFILE__"),
4018 ThisVnode, ThisUnique);
4020 CopyOnWrite(salvinfo, &rootdir);
4021 code = afs_dir_Create(&rootdir.dirHandle, npath, &pa);
4025 ThisUnique += 50; /* Try creating a different file */
4027 osi_Assert(code == 0);
4028 Log("Attaching orphaned %s to volume's root dir as %s\n",
4029 ((class == vLarge) ? "directory" : "file"), npath);
4031 } /* for each vnode in the class */
4032 } /* for each class of vnode */
4034 /* Delete the old rootinode directory if the rootdir was CopyOnWrite */
4036 if (rootdirfound && !oldrootdir.copied && rootdir.copied) {
4038 IH_DEC(oldrootdir.ds_linkH, oldrootdir.dirHandle.dirh_inode,
4040 osi_Assert(code == 0);
4041 /* dirVnodeInfo->inodes[?] is not updated with new inode number */
4044 DFlush(); /* Flush the changes */
4045 if (!rootdirfound && (orphans == ORPH_ATTACH)) {
4046 Log("Cannot attach orphaned files and directories: Root directory not found\n");
4047 orphans = ORPH_IGNORE;
4050 /* Write out all changed vnodes. Orphaned files and directories
4051 * will get removed here also (if requested).
4053 for (class = 0; class < nVNODECLASSES; class++) {
4054 afs_sfsize_t nVnodes = salvinfo->vnodeInfo[class].nVnodes;
4055 struct VnodeClassInfo *vcp = &VnodeClassInfo[class];
4056 struct VnodeEssence *vnodes = salvinfo->vnodeInfo[class].vnodes;
4057 FilesInVolume += salvinfo->vnodeInfo[class].nAllocatedVnodes;
4058 BlocksInVolume += salvinfo->vnodeInfo[class].volumeBlockCount;
4059 for (i = 0; i < nVnodes; i++) {
4060 struct VnodeEssence *vnp = &vnodes[i];
4061 VnodeId vnodeNumber = bitNumberToVnodeNumber(i, class);
4063 /* If the vnode is good but is unclaimed (not listed in
4064 * any directory entries), then it is orphaned.
4067 if ((vnp->type != 0) && (orphaned = IsVnodeOrphaned(salvinfo, vnodeNumber))) {
4068 vnp->claimed = 0; /* Makes IsVnodeOrphaned calls faster */
4072 if (vnp->changed || vnp->count) {
4075 IH_IREAD(salvinfo->vnodeInfo[class].handle,
4076 vnodeIndexOffset(vcp, vnodeNumber),
4077 (char *)&vnode, sizeof(vnode));
4078 osi_Assert(nBytes == sizeof(vnode));
4080 vnode.parent = vnp->parent;
4081 oldCount = vnode.linkCount;
4082 vnode.linkCount = vnode.linkCount - vnp->count;
4085 orphaned = IsVnodeOrphaned(salvinfo, vnodeNumber);
4087 if (!vnp->todelete) {
4088 /* Orphans should have already been attached (if requested) */
4089 osi_Assert(orphans != ORPH_ATTACH);
4090 oblocks += vnp->blockCount;
4093 if (((orphans == ORPH_REMOVE) || vnp->todelete)
4095 BlocksInVolume -= vnp->blockCount;
4097 if (VNDISK_GET_INO(&vnode)) {
4099 IH_DEC(alinkH, VNDISK_GET_INO(&vnode), vid);
4100 osi_Assert(code == 0);
4102 memset(&vnode, 0, sizeof(vnode));
4104 } else if (vnp->count) {
4106 Log("Vnode %u: link count incorrect (was %d, %s %d)\n", vnodeNumber, oldCount, (Testing ? "would have changed to" : "now"), vnode.linkCount);
4109 vnode.modeBits = vnp->modeBits;
4112 vnode.dataVersion++;
4115 IH_IWRITE(salvinfo->vnodeInfo[class].handle,
4116 vnodeIndexOffset(vcp, vnodeNumber),
4117 (char *)&vnode, sizeof(vnode));
4118 osi_Assert(nBytes == sizeof(vnode));
4120 salvinfo->VolumeChanged = 1;
4124 if (!Showmode && ofiles) {
4125 Log("%s %d orphaned files and directories (approx. %u KB)\n",
4127 && (orphans == ORPH_REMOVE)) ? "Removed" : "Found", ofiles,
4131 for (class = 0; class < nVNODECLASSES; class++) {
4132 struct VnodeInfo *vip = &salvinfo->vnodeInfo[class];
4133 for (i = 0; i < vip->nVnodes; i++)
4134 if (vip->vnodes[i].name)
4135 free(vip->vnodes[i].name);
4142 /* Set correct resource utilization statistics */
4143 volHeader.filecount = FilesInVolume;
4144 volHeader.diskused = BlocksInVolume;
4146 /* Make sure the uniquifer is big enough: maxunique is the real maxUniquifier */
4147 if (volHeader.uniquifier < (maxunique + 1)) {
4149 Log("Volume uniquifier is too low; fixed\n");
4150 /* Plus 2,000 in case there are workstations out there with
4151 * cached vnodes that have since been deleted
4153 volHeader.uniquifier = (maxunique + 1 + 2000);
4157 Log("*** WARNING: Root directory recreated, but volume is fragile! "
4158 "Only use this salvaged volume to copy data to another volume; "
4159 "do not continue to use this volume (%lu) as-is.\n",
4160 afs_printable_uint32_lu(vid));
4163 if (!Testing && salvinfo->VolumeChanged) {
4164 #ifdef FSSYNC_BUILD_CLIENT
4165 if (salvinfo->useFSYNC) {
4166 afs_int32 fsync_code;
4168 fsync_code = FSYNC_VolOp(vid, NULL, FSYNC_VOL_BREAKCBKS, FSYNC_SALVAGE, NULL);
4170 Log("Error trying to tell the fileserver to break callbacks for "
4171 "changed volume %lu; error code %ld\n",
4172 afs_printable_uint32_lu(vid),
4173 afs_printable_int32_ld(fsync_code));
4175 salvinfo->VolumeChanged = 0;
4178 #endif /* FSSYNC_BUILD_CLIENT */
4180 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
4181 if (!salvinfo->useFSYNC) {
4182 /* A volume's contents have changed, but the fileserver will not
4183 * break callbacks on the volume until it tries to load the vol
4184 * header. So, to reduce the amount of time a client could have
4185 * stale data, remove fsstate.dat, so the fileserver will init
4186 * callback state with all clients. This is a very coarse hammer,
4187 * and in the future we should just record which volumes have
4189 code = unlink(AFSDIR_SERVER_FSSTATE_FILEPATH);
4190 if (code && errno != ENOENT) {
4191 Log("Error %d when trying to unlink FS state file %s\n", errno,
4192 AFSDIR_SERVER_FSSTATE_FILEPATH);
4198 /* Turn off the inUse bit; the volume's been salvaged! */
4199 volHeader.inUse = 0; /* clear flag indicating inUse@last crash */
4200 volHeader.needsSalvaged = 0; /* clear 'damaged' flag */
4201 volHeader.inService = 1; /* allow service again */
4202 volHeader.needsCallback = (salvinfo->VolumeChanged != 0);
4203 volHeader.dontSalvage = DONT_SALVAGE;
4204 salvinfo->VolumeChanged = 0;
4206 nBytes = IH_IWRITE(h, 0, (char *)&volHeader, sizeof(volHeader));
4207 osi_Assert(nBytes == sizeof(volHeader));
4210 Log("%sSalvaged %s (%u): %d files, %d blocks\n",
4211 (Testing ? "It would have " : ""), volHeader.name, volHeader.id,
4212 FilesInVolume, BlocksInVolume);
4215 IH_RELEASE(salvinfo->vnodeInfo[vSmall].handle);
4216 IH_RELEASE(salvinfo->vnodeInfo[vLarge].handle);
4222 ClearROInUseBit(struct VolumeSummary *summary)
4224 IHandle_t *h = summary->volumeInfoHandle;
4225 afs_sfsize_t nBytes;
4227 VolumeDiskData volHeader;
4229 nBytes = IH_IREAD(h, 0, (char *)&volHeader, sizeof(volHeader));
4230 osi_Assert(nBytes == sizeof(volHeader));
4231 osi_Assert(volHeader.stamp.magic == VOLUMEINFOMAGIC);
4232 volHeader.inUse = 0;
4233 volHeader.needsSalvaged = 0;
4234 volHeader.inService = 1;
4235 volHeader.dontSalvage = DONT_SALVAGE;
4237 nBytes = IH_IWRITE(h, 0, (char *)&volHeader, sizeof(volHeader));
4238 osi_Assert(nBytes == sizeof(volHeader));
4243 * Possible delete the volume.
4245 * deleteMe - Always do so, only a partial volume.
4248 MaybeZapVolume(struct SalvInfo *salvinfo, struct InodeSummary *isp,
4249 char *message, int deleteMe, int check)
4251 if (readOnly(isp) || deleteMe) {
4252 if (isp->volSummary && !isp->volSummary->deleted) {
4255 Log("Volume %u (is only a partial volume--probably an attempt was made to move/restore it when a machine crash occured.\n", isp->volumeId);
4257 Log("It will be deleted on this server (you may find it elsewhere)\n");
4260 Log("Volume %u needs to be salvaged. Since it is read-only, however,\n", isp->volumeId);
4262 Log("it will be deleted instead. It should be recloned.\n");
4267 char filename[VMAXPATHLEN];
4268 VolumeExternalName_r(isp->volumeId, filename, sizeof(filename));
4269 sprintf(path, "%s" OS_DIRSEP "%s", salvinfo->fileSysPath, filename);
4271 code = VDestroyVolumeDiskHeader(salvinfo->fileSysPartition, isp->volumeId, isp->RWvolumeId);
4273 Log("Error %ld destroying volume disk header for volume %lu\n",
4274 afs_printable_int32_ld(code),
4275 afs_printable_uint32_lu(isp->volumeId));
4278 /* make sure we actually delete the header file; ENOENT
4279 * is fine, since VDestroyVolumeDiskHeader probably already
4281 if (unlink(path) && errno != ENOENT) {
4282 Log("Unable to unlink %s (errno = %d)\n", path, errno);
4284 if (salvinfo->useFSYNC) {
4285 AskDelete(salvinfo, isp->volumeId);
4287 isp->volSummary->deleted = 1;
4290 } else if (!check) {
4291 Log("%s salvage was unsuccessful: read-write volume %u\n", message,
4293 Abort("Salvage of volume %u aborted\n", isp->volumeId);
4297 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
4299 * Locks a volume on disk for salvaging.
4301 * @param[in] volumeId volume ID to lock
4303 * @return operation status
4305 * @retval -1 volume lock raced with a fileserver restart; all volumes must
4306 * checked out and locked again
4311 LockVolume(struct SalvInfo *salvinfo, VolumeId volumeId)
4316 /* should always be WRITE_LOCK, but keep the lock-type logic all
4317 * in one place, in VVolLockType. Params will be ignored, but
4318 * try to provide what we're logically doing. */
4319 locktype = VVolLockType(V_VOLUPD, 1);
4321 code = VLockVolumeByIdNB(volumeId, salvinfo->fileSysPartition, locktype);
4323 if (code == EBUSY) {
4324 Abort("Someone else appears to be using volume %lu; Aborted\n",
4325 afs_printable_uint32_lu(volumeId));
4327 Abort("Error %ld trying to lock volume %lu; Aborted\n",
4328 afs_printable_int32_ld(code),
4329 afs_printable_uint32_lu(volumeId));
4332 code = FSYNC_VerifyCheckout(volumeId, salvinfo->fileSysPartition->name, FSYNC_VOL_OFF, FSYNC_SALVAGE);
4333 if (code == SYNC_DENIED) {
4334 /* need to retry checking out volumes */
4337 if (code != SYNC_OK) {
4338 Abort("FSYNC_VerifyCheckout failed for volume %lu with code %ld\n",
4339 afs_printable_uint32_lu(volumeId), afs_printable_int32_ld(code));
4342 /* set inUse = programType in the volume header to ensure that nobody
4343 * tries to use this volume again without salvaging, if we somehow crash
4344 * or otherwise exit before finishing the salvage.
4348 struct VolumeHeader header;
4349 struct VolumeDiskHeader diskHeader;
4350 struct VolumeDiskData volHeader;
4352 code = VReadVolumeDiskHeader(volumeId, salvinfo->fileSysPartition, &diskHeader);
4357 DiskToVolumeHeader(&header, &diskHeader);
4359 IH_INIT(h, salvinfo->fileSysDevice, header.parent, header.volumeInfo);
4360 if (IH_IREAD(h, 0, (char*)&volHeader, sizeof(volHeader)) != sizeof(volHeader) ||
4361 volHeader.stamp.magic != VOLUMEINFOMAGIC) {
4367 volHeader.inUse = programType;
4369 /* If we can't re-write the header, bail out and error. We don't
4370 * assert when reading the header, since it's possible the
4371 * header isn't really there (when there's no data associated
4372 * with the volume; we just delete the vol header file in that
4373 * case). But if it's there enough that we can read it, but
4374 * somehow we cannot write to it to signify we're salvaging it,
4375 * we've got a big problem and we cannot continue. */
4376 osi_Assert(IH_IWRITE(h, 0, (char*)&volHeader, sizeof(volHeader)) == sizeof(volHeader));
4383 #endif /* AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL */
4386 AskError(struct SalvInfo *salvinfo, VolumeId volumeId)
4388 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
4390 code = FSYNC_VolOp(volumeId, salvinfo->fileSysPartition->name,
4391 FSYNC_VOL_FORCE_ERROR, FSYNC_WHATEVER, NULL);
4392 if (code != SYNC_OK) {
4393 Log("AskError: failed to force volume %lu into error state; "
4394 "SYNC error code %ld (%s)\n", (long unsigned)volumeId,
4395 (long)code, SYNC_res2string(code));
4397 #endif /* AFS_DEMAND_ATTACH_FS || AFS_DEMAND_ATTACH_UTIL */
4401 AskOffline(struct SalvInfo *salvinfo, VolumeId volumeId)
4406 memset(&res, 0, sizeof(res));
4408 for (i = 0; i < 3; i++) {
4409 code = FSYNC_VolOp(volumeId, salvinfo->fileSysPartition->name,
4410 FSYNC_VOL_OFF, FSYNC_SALVAGE, &res);
4412 if (code == SYNC_OK) {
4414 } else if (code == SYNC_DENIED) {
4416 Log("AskOffline: file server denied offline request; a general salvage may be required.\n");
4418 Log("AskOffline: file server denied offline request; a general salvage is required.\n");
4419 Abort("Salvage aborted\n");
4420 } else if (code == SYNC_BAD_COMMAND) {
4421 Log("AskOffline: fssync protocol mismatch (bad command word '%d'); salvage aborting.\n",
4424 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
4425 Log("AskOffline: please make sure dafileserver, davolserver, salvageserver and dasalvager binaries are same version.\n");
4427 Log("AskOffline: fileserver is DAFS but we are not.\n");
4430 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
4431 Log("AskOffline: fileserver is not DAFS but we are.\n");
4433 Log("AskOffline: please make sure fileserver, volserver and salvager binaries are same version.\n");
4436 Abort("Salvage aborted\n");
4439 Log("AskOffline: request for fileserver to take volume offline failed; trying again...\n");
4440 FSYNC_clientFinis();
4444 if (code != SYNC_OK) {
4445 Log("AskOffline: request for fileserver to take volume offline failed; salvage aborting.\n");
4446 Abort("Salvage aborted\n");
4450 /* don't want to pass around state; remember it here */
4451 static int isDAFS = -1;
4456 afs_int32 code = 1, i;
4458 /* we don't care if we race. the answer shouldn't change */
4462 memset(&res, 0, sizeof(res));
4464 for (i = 0; code && i < 3; i++) {
4465 code = FSYNC_VolOp(0, NULL, FSYNC_VOL_LISTVOLUMES, FSYNC_SALVAGE, &res);
4467 Log("AskDAFS: FSYNC_VOL_LISTVOLUMES failed with code %ld reason "
4468 "%ld (%s); trying again...\n", (long)code, (long)res.hdr.reason,
4469 FSYNC_reason2string(res.hdr.reason));
4470 FSYNC_clientFinis();
4476 Log("AskDAFS: could not determine DAFS-ness, assuming not DAFS\n");
4480 if ((res.hdr.flags & SYNC_FLAG_DAFS_EXTENSIONS)) {
4490 MaybeAskOnline(struct SalvInfo *salvinfo, VolumeId volumeId)
4492 struct VolumeDiskHeader diskHdr;
4494 code = VReadVolumeDiskHeader(volumeId, salvinfo->fileSysPartition, &diskHdr);
4496 /* volume probably does not exist; no need to bring back online */
4499 AskOnline(salvinfo, volumeId);
4503 AskOnline(struct SalvInfo *salvinfo, VolumeId volumeId)
4507 for (i = 0; i < 3; i++) {
4508 code = FSYNC_VolOp(volumeId, salvinfo->fileSysPartition->name,
4509 FSYNC_VOL_ON, FSYNC_WHATEVER, NULL);
4511 if (code == SYNC_OK) {
4513 } else if (code == SYNC_DENIED) {
4514 Log("AskOnline: file server denied online request to volume %u partition %s; trying again...\n", volumeId, salvinfo->fileSysPartition->name);
4515 } else if (code == SYNC_BAD_COMMAND) {
4516 Log("AskOnline: fssync protocol mismatch (bad command word '%d')\n",
4518 Log("AskOnline: please make sure file server binaries are same version.\n");
4522 Log("AskOnline: request for fileserver to put volume online failed; trying again...\n");
4523 FSYNC_clientFinis();
4530 AskDelete(struct SalvInfo *salvinfo, VolumeId volumeId)
4535 for (i = 0; i < 3; i++) {
4536 memset(&res, 0, sizeof(res));
4537 code = FSYNC_VolOp(volumeId, salvinfo->fileSysPartition->name,
4538 FSYNC_VOL_DONE, FSYNC_SALVAGE, &res);
4540 if (code == SYNC_OK) {
4542 } else if (code == SYNC_DENIED) {
4543 Log("AskOnline: file server denied DONE request to volume %u partition %s; trying again...\n", volumeId, salvinfo->fileSysPartition->name);
4544 } else if (code == SYNC_BAD_COMMAND) {
4545 Log("AskOnline: fssync protocol mismatch (bad command word '%d')\n",
4548 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
4549 Log("AskOnline: please make sure dafileserver, davolserver, salvageserver and dasalvager binaries are same version.\n");
4551 Log("AskOnline: fileserver is DAFS but we are not.\n");
4554 #if defined(AFS_DEMAND_ATTACH_FS) || defined(AFS_DEMAND_ATTACH_UTIL)
4555 Log("AskOnline: fileserver is not DAFS but we are.\n");
4557 Log("AskOnline: please make sure fileserver, volserver and salvager binaries are same version.\n");
4561 } else if (code == SYNC_FAILED &&
4562 (res.hdr.reason == FSYNC_UNKNOWN_VOLID ||
4563 res.hdr.reason == FSYNC_WRONG_PART)) {
4564 /* volume is already effectively 'deleted' */
4568 Log("AskOnline: request for fileserver to delete volume failed; trying again...\n");
4569 FSYNC_clientFinis();
4576 CopyInode(Device device, Inode inode1, Inode inode2, int rwvolume)
4578 /* Volume parameter is passed in case iopen is upgraded in future to
4579 * require a volume Id to be passed
4582 IHandle_t *srcH, *destH;
4583 FdHandle_t *srcFdP, *destFdP;
4585 afs_foff_t size = 0;
4587 IH_INIT(srcH, device, rwvolume, inode1);
4588 srcFdP = IH_OPEN(srcH);
4589 osi_Assert(srcFdP != NULL);
4590 IH_INIT(destH, device, rwvolume, inode2);
4591 destFdP = IH_OPEN(destH);
4592 while ((nBytes = FDH_PREAD(srcFdP, buf, sizeof(buf), size)) > 0) {
4593 osi_Assert(FDH_PWRITE(destFdP, buf, nBytes, size) == nBytes);
4596 osi_Assert(nBytes == 0);
4597 FDH_REALLYCLOSE(srcFdP);
4598 FDH_REALLYCLOSE(destFdP);
4605 PrintInodeList(struct SalvInfo *salvinfo)
4607 struct ViceInodeInfo *ip;
4608 struct ViceInodeInfo *buf;
4611 afs_sfsize_t st_size;
4613 st_size = OS_SIZE(salvinfo->inodeFd);
4614 osi_Assert(st_size >= 0);
4615 buf = (struct ViceInodeInfo *)malloc(st_size);
4616 osi_Assert(buf != NULL);
4617 nInodes = st_size / sizeof(struct ViceInodeInfo);
4618 osi_Assert(OS_READ(salvinfo->inodeFd, buf, st_size) == st_size);
4619 for (ip = buf; nInodes--; ip++) {
4620 Log("Inode:%s, linkCount=%d, size=%#llx, p=(%u,%u,%u,%u)\n",
4621 PrintInode(stmp, ip->inodeNumber), ip->linkCount,
4622 (afs_uintmax_t) ip->byteCount, ip->u.param[0], ip->u.param[1],
4623 ip->u.param[2], ip->u.param[3]);
4629 PrintInodeSummary(struct SalvInfo *salvinfo)
4632 struct InodeSummary *isp;
4634 for (i = 0; i < salvinfo->nVolumesInInodeFile; i++) {
4635 isp = &salvinfo->inodeSummary[i];
4636 Log("VID:%u, RW:%u, index:%d, nInodes:%d, nSpecialInodes:%d, maxUniquifier:%u, volSummary\n", isp->volumeId, isp->RWvolumeId, isp->index, isp->nInodes, isp->nSpecialInodes, isp->maxUniquifier);
4646 osi_Assert(0); /* Fork is never executed in the NT code path */
4650 #ifdef AFS_DEMAND_ATTACH_FS
4651 if ((f == 0) && (programType == salvageServer)) {
4652 /* we are a salvageserver child */
4653 #ifdef FSSYNC_BUILD_CLIENT
4654 VChildProcReconnectFS_r();
4656 #ifdef SALVSYNC_BUILD_CLIENT
4660 #endif /* AFS_DEMAND_ATTACH_FS */
4661 #endif /* !AFS_NT40_ENV */
4671 #ifdef AFS_DEMAND_ATTACH_FS
4672 if (programType == salvageServer) {
4673 #ifdef SALVSYNC_BUILD_CLIENT
4676 #ifdef FSSYNC_BUILD_CLIENT
4680 #endif /* AFS_DEMAND_ATTACH_FS */
4683 if (main_thread != pthread_self())
4684 pthread_exit((void *)code);
4697 pid = wait(&status);
4698 osi_Assert(pid != -1);
4699 if (WCOREDUMP(status))
4700 Log("\"%s\" core dumped!\n", prog);
4701 if (WIFSIGNALED(status) != 0 || WEXITSTATUS(status) != 0)
4707 TimeStamp(time_t clock, int precision)
4710 static char timestamp[20];
4711 lt = localtime(&clock);
4713 (void)strftime(timestamp, 20, "%m/%d/%Y %H:%M:%S", lt);
4715 (void)strftime(timestamp, 20, "%m/%d/%Y %H:%M", lt);
4720 CheckLogFile(char * log_path)
4722 char oldSlvgLog[AFSDIR_PATH_MAX];
4724 #ifndef AFS_NT40_ENV
4731 strcpy(oldSlvgLog, log_path);
4732 strcat(oldSlvgLog, ".old");
4734 renamefile(log_path, oldSlvgLog);
4735 logFile = afs_fopen(log_path, "a");
4737 if (!logFile) { /* still nothing, use stdout */
4741 #ifndef AFS_NAMEI_ENV
4742 AFS_DEBUG_IOPS_LOG(logFile);
4747 #ifndef AFS_NT40_ENV
4749 TimeStampLogFile(char * log_path)
4751 char stampSlvgLog[AFSDIR_PATH_MAX];
4756 lt = localtime(&now);
4757 snprintf(stampSlvgLog, sizeof stampSlvgLog,
4758 "%s.%04d-%02d-%02d.%02d:%02d:%02d", log_path,
4759 lt->tm_year + 1900, lt->tm_mon + 1, lt->tm_mday, lt->tm_hour,
4760 lt->tm_min, lt->tm_sec);
4762 /* try to link the logfile to a timestamped filename */
4763 /* if it fails, oh well, nothing we can do */
4764 link(log_path, stampSlvgLog);
4773 #ifndef AFS_NT40_ENV
4775 printf("Can't show log since using syslog.\n");
4786 logFile = afs_fopen(AFSDIR_SERVER_SLVGLOG_FILEPATH, "r");
4789 printf("Can't read %s, exiting\n", AFSDIR_SERVER_SLVGLOG_FILEPATH);
4792 while (fgets(line, sizeof(line), logFile))
4799 Log(const char *format, ...)
4805 va_start(args, format);
4806 vsnprintf(tmp, sizeof tmp, format, args);
4808 #ifndef AFS_NT40_ENV
4810 syslog(LOG_INFO, "%s", tmp);
4814 gettimeofday(&now, NULL);
4815 fprintf(logFile, "%s %s", TimeStamp(now.tv_sec, 1), tmp);
4821 Abort(const char *format, ...)
4826 va_start(args, format);
4827 vsnprintf(tmp, sizeof tmp, format, args);
4829 #ifndef AFS_NT40_ENV
4831 syslog(LOG_INFO, "%s", tmp);
4835 fprintf(logFile, "%s", tmp);
4847 ToString(const char *s)
4850 p = (char *)malloc(strlen(s) + 1);
4851 osi_Assert(p != NULL);
4856 /* Remove the FORCESALVAGE file */
4858 RemoveTheForce(char *path)
4861 struct afs_stat_st force; /* so we can use afs_stat to find it */
4862 strcpy(target,path);
4863 strcat(target,"/FORCESALVAGE");
4864 if (!Testing && ForceSalvage) {
4865 if (afs_stat(target,&force) == 0) unlink(target);
4869 #ifndef AFS_AIX32_ENV
4871 * UseTheForceLuke - see if we can use the force
4874 UseTheForceLuke(char *path)
4876 struct afs_stat_st force;
4878 strcpy(target,path);
4879 strcat(target,"/FORCESALVAGE");
4881 return (afs_stat(target, &force) == 0);
4885 * UseTheForceLuke - see if we can use the force
4888 * The VRMIX fsck will not muck with the filesystem it is supposedly
4889 * fixing and create a "FORCESALVAGE" file (by design). Instead, we
4890 * muck directly with the root inode, which is within the normal
4892 * ListViceInodes() has a side effect of setting ForceSalvage if
4893 * it detects a need, based on root inode examination.
4896 UseTheForceLuke(char *path)
4899 return 0; /* sorry OB1 */
4904 /* NT support routines */
4906 static char execpathname[MAX_PATH];
4908 nt_SalvagePartition(char *partName, int jobn)
4913 if (!*execpathname) {
4914 n = GetModuleFileName(NULL, execpathname, MAX_PATH - 1);
4915 if (!n || n == 1023)
4918 job.cj_magic = SALVAGER_MAGIC;
4919 job.cj_number = jobn;
4920 (void)strcpy(job.cj_part, partName);
4921 pid = (int)spawnprocveb(execpathname, save_args, NULL, &job, sizeof(job));
4926 nt_SetupPartitionSalvage(void *datap, int len)
4928 childJob_t *jobp = (childJob_t *) datap;
4929 char logname[AFSDIR_PATH_MAX];
4931 if (len != sizeof(childJob_t))
4933 if (jobp->cj_magic != SALVAGER_MAGIC)
4938 (void)sprintf(logname, "%s.%d", AFSDIR_SERVER_SLVGLOG_FILEPATH,
4940 logFile = afs_fopen(logname, "w");
4948 #endif /* AFS_NT40_ENV */