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
10 #include <afsconfig.h>
11 #include <afs/param.h>
16 #include <WINNT/afsevent.h>
20 #include <afs/afsutil.h>
26 /* Read a VLDB file and verify it for correctness */
28 #define VL 0x001 /* good volume entry */
29 #define FR 0x002 /* free volume entry */
30 #define MH 0x004 /* multi-homed entry */
32 #define RWH 0x010 /* on rw hash chain */
33 #define ROH 0x020 /* on ro hash chain */
34 #define BKH 0x040 /* on bk hash chain */
35 #define NH 0x080 /* on name hash chain */
37 #define MHC 0x100 /* on multihomed chain */
38 #define FRC 0x200 /* on free chain */
40 #define REFRW 0x1000 /* linked from something (RW) */
41 #define REFRO 0x2000 /* linked from something (RO) */
42 #define REFBK 0x4000 /* linked from something (BK) */
43 #define REFN 0x8000 /* linked from something (name) */
45 #define MULTRW 0x10000 /* multiply-chained (RW) */
46 #define MULTRO 0x20000 /* multiply-chained (RO) */
47 #define MULTBK 0x40000 /* multiply-chained (BK) */
48 #define MULTN 0x80000 /* multiply-chained (name) */
50 #define MISRWH 0x100000 /* mischained (RW) */
51 #define MISROH 0x200000 /* mischained (RO) */
52 #define MISBKH 0x400000 /* mischained (BK) */
53 #define MISNH 0x800000 /* mischained (name) */
55 #define VLDB_CHECK_NO_VLDB_CHECK_ERROR 0
56 #define VLDB_CHECK_WARNING 1
57 #define VLDB_CHECK_ERROR 2
58 #define VLDB_CHECK_FATAL 4
59 #define vldbread(x,y,z) vldbio(x,y,z,0)
60 #define vldbwrite(x,y,z) vldbio(x,y,z,1)
62 #define ADDR(x) (x/sizeof(struct nvlentry))
65 int listentries, listservers, listheader, listuheader, verbose, quiet;
69 /* if quiet, don't send anything to stdout */
71 /* error level. 0 = no error, 1 = warning, 2 = error, 4 = fatal */
79 int serveraddrs[MAXSERVERID + 2];
80 u_char serverxref[MAXSERVERID + 2]; /**< to resolve cross-linked mh entries */
81 int serverref[MAXSERVERID + 2]; /**< which addrs are referenced by vl entries */
84 afs_uint32 addr; /**< vldb file record */
85 char orphan[VL_MHSRV_PERBLK]; /**< unreferenced mh enties */
86 } mhinfo[VL_MAX_ADDREXTBLKS];
89 /* Used to control what goes to stdout based on quiet flag */
91 quiet_println(const char *fmt,...) {
95 vfprintf(stdout, fmt, args);
100 /* Used to set the error level and ship messages to stderr */
102 log_error(int eval, const char *fmt, ...)
105 if (error_level < eval) error_level = eval ; /* bump up the severity */
107 vfprintf(stderr, fmt, args);
110 if (error_level == VLDB_CHECK_FATAL) exit(VLDB_CHECK_FATAL);
119 struct ubik_hdr uheader;
121 offset = lseek(fd, 0, 0);
123 log_error(VLDB_CHECK_FATAL,"error: lseek to 0 failed: %d %d\n", offset, errno);
124 return (VLDB_CHECK_FATAL);
127 /* now read the info */
128 r = read(fd, &uheader, sizeof(uheader));
129 if (r != sizeof(uheader)) {
130 log_error(VLDB_CHECK_FATAL,"error: read of %lu bytes failed: %d %d\n", sizeof(uheader), r,
132 return (VLDB_CHECK_FATAL);
135 uheader.magic = ntohl(uheader.magic);
136 uheader.size = ntohs(uheader.size);
137 uheader.version.epoch = ntohl(uheader.version.epoch);
138 uheader.version.counter = ntohl(uheader.version.counter);
141 quiet_println("Ubik Header\n");
142 quiet_println(" Magic = 0x%x\n", uheader.magic);
143 quiet_println(" Size = %u\n", uheader.size);
144 quiet_println(" Version.epoch = %u\n", uheader.version.epoch);
145 quiet_println(" Version.counter = %u\n", uheader.version.counter);
148 if (uheader.size != HDRSIZE)
149 log_error(VLDB_CHECK_WARNING,"VLDB_CHECK_WARNING: Ubik header size is %u (should be %u)\n", uheader.size,
151 if (uheader.magic != UBIK_MAGIC)
152 log_error(VLDB_CHECK_ERROR,"Ubik header magic is 0x%x (should be 0x%x)\n", uheader.magic,
159 vldbio(int position, void *buffer, int size, int rdwr)
163 /* seek to the correct spot. skip ubik stuff */
164 p = position + HDRSIZE;
165 offset = lseek(fd, p, 0);
167 log_error(VLDB_CHECK_FATAL,"error: lseek to %d failed: %d %d\n", p, offset, errno);
172 r = write(fd, buffer, size);
174 r = read(fd, buffer, size);
177 log_error(VLDB_CHECK_FATAL,"error: %s of %d bytes failed: %d %d\n", rdwr==1?"write":"read",
201 NameHash(char *volname)
207 for (vchar = volname + strlen(volname) - 1; vchar >= volname; vchar--)
208 hash = (hash * 63) + (*((unsigned char *)vchar) - 63);
209 return (hash % HASHSIZE);
213 IdHash(afs_uint32 volid)
215 return ((abs(volid)) % HASHSIZE);
218 #define LEGALCHARS ".ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"
220 InvalidVolname(char *volname)
226 slen = strlen(volname);
227 if (slen >= VL_MAXNAMELEN)
231 return (slen != strspn(volname, map));
235 validVolumeAddr(afs_uint32 fileOffset)
237 if (ADDR(fileOffset) >= maxentries) {
238 /* Are we in range */
242 * We cannot test whether the offset is aligned
243 * since the vl entries are not in a regular array
249 readheader(struct vlheader *headerp)
253 vldbread(0, (char *)headerp, sizeof(*headerp));
255 headerp->vital_header.vldbversion =
256 ntohl(headerp->vital_header.vldbversion);
257 headerp->vital_header.headersize =
258 ntohl(headerp->vital_header.headersize);
259 headerp->vital_header.freePtr = ntohl(headerp->vital_header.freePtr);
260 headerp->vital_header.eofPtr = ntohl(headerp->vital_header.eofPtr);
261 headerp->vital_header.allocs = ntohl(headerp->vital_header.allocs);
262 headerp->vital_header.frees = ntohl(headerp->vital_header.frees);
263 headerp->vital_header.MaxVolumeId =
264 ntohl(headerp->vital_header.MaxVolumeId);
265 headerp->vital_header.totalEntries[0] =
266 ntohl(headerp->vital_header.totalEntries[0]);
267 for (i = 0; i < MAXTYPES; i++)
268 headerp->vital_header.totalEntries[i] =
269 ntohl(headerp->vital_header.totalEntries[1]);
271 headerp->SIT = ntohl(headerp->SIT);
272 for (i = 0; i <= MAXSERVERID; i++)
273 headerp->IpMappedAddr[i] = ntohl(headerp->IpMappedAddr[i]);
274 for (i = 0; i < HASHSIZE; i++)
275 headerp->VolnameHash[i] = ntohl(headerp->VolnameHash[i]);
276 for (i = 0; i < MAXTYPES; i++)
277 for (j = 0; j < HASHSIZE; j++)
278 headerp->VolidHash[i][j] = ntohl(headerp->VolidHash[i][j]);
281 quiet_println("vldb header\n");
282 quiet_println(" vldbversion = %u\n",
283 headerp->vital_header.vldbversion);
284 quiet_println(" headersize = %u [actual=%lu]\n",
285 headerp->vital_header.headersize, sizeof(*headerp));
286 quiet_println(" freePtr = 0x%x\n", headerp->vital_header.freePtr);
287 quiet_println(" eofPtr = %u\n", headerp->vital_header.eofPtr);
288 quiet_println(" allocblock calls = %10u\n", headerp->vital_header.allocs);
289 quiet_println(" freeblock calls = %10u\n", headerp->vital_header.frees);
290 quiet_println(" MaxVolumeId = %u\n",
291 headerp->vital_header.MaxVolumeId);
292 quiet_println(" rw vol entries = %u\n",
293 headerp->vital_header.totalEntries[0]);
294 quiet_println(" ro vol entries = %u\n",
295 headerp->vital_header.totalEntries[1]);
296 quiet_println(" bk vol entries = %u\n",
297 headerp->vital_header.totalEntries[2]);
298 quiet_println(" multihome info = 0x%x (%u)\n", headerp->SIT,
300 quiet_println(" server ip addr table: size = %d entries\n",
302 quiet_println(" volume name hash table: size = %d buckets\n", HASHSIZE);
303 quiet_println(" volume id hash table: %d tables with %d buckets each\n",
307 /* Check the header size */
308 if (headerp->vital_header.headersize != sizeof(*headerp))
309 log_error(VLDB_CHECK_WARNING,"Header reports its size as %d (should be %lu)\n",
310 headerp->vital_header.headersize, sizeof(*headerp));
315 writeheader(struct vlheader *headerp)
319 headerp->vital_header.vldbversion =
320 htonl(headerp->vital_header.vldbversion);
321 headerp->vital_header.headersize =
322 htonl(headerp->vital_header.headersize);
323 headerp->vital_header.freePtr = htonl(headerp->vital_header.freePtr);
324 headerp->vital_header.eofPtr = htonl(headerp->vital_header.eofPtr);
325 headerp->vital_header.allocs = htonl(headerp->vital_header.allocs);
326 headerp->vital_header.frees = htonl(headerp->vital_header.frees);
327 headerp->vital_header.MaxVolumeId =
328 htonl(headerp->vital_header.MaxVolumeId);
329 headerp->vital_header.totalEntries[0] =
330 htonl(headerp->vital_header.totalEntries[0]);
331 for (i = 0; i < MAXTYPES; i++)
332 headerp->vital_header.totalEntries[i] =
333 htonl(headerp->vital_header.totalEntries[1]);
335 headerp->SIT = htonl(headerp->SIT);
336 for (i = 0; i <= MAXSERVERID; i++)
337 headerp->IpMappedAddr[i] = htonl(headerp->IpMappedAddr[i]);
338 for (i = 0; i < HASHSIZE; i++)
339 headerp->VolnameHash[i] = htonl(headerp->VolnameHash[i]);
340 for (i = 0; i < MAXTYPES; i++)
341 for (j = 0; j < HASHSIZE; j++)
342 headerp->VolidHash[i][j] = htonl(headerp->VolidHash[i][j]);
344 vldbwrite(0, (char *)headerp, sizeof(*headerp));
348 readMH(afs_uint32 addr, int block, struct extentaddr *mhblockP)
351 struct extentaddr *e;
353 vldbread(addr, (char *)mhblockP, VL_ADDREXTBLK_SIZE);
356 mhblockP->ex_count = ntohl(mhblockP->ex_count);
357 mhblockP->ex_hdrflags = ntohl(mhblockP->ex_hdrflags);
358 for (i = 0; i < VL_MAX_ADDREXTBLKS; i++) {
359 mhblockP->ex_contaddrs[i] = ntohl(mhblockP->ex_contaddrs[i]);
362 for (i = 1; i < VL_MHSRV_PERBLK; i++) {
365 /* won't convert hostuuid */
366 e->ex_uniquifier = ntohl(e->ex_uniquifier);
367 for (j = 0; j < VL_MAXIPADDRS_PERMH; j++)
368 e->ex_addrs[j] = ntohl(e->ex_addrs[j]);
374 readentry(afs_int32 addr, struct nvlentry *vlentryp, afs_int32 *type)
378 vldbread(addr, (char *)vlentryp, sizeof(*vlentryp));
380 for (i = 0; i < MAXTYPES; i++)
381 vlentryp->volumeId[i] = ntohl(vlentryp->volumeId[i]);
382 vlentryp->flags = ntohl(vlentryp->flags);
383 vlentryp->LockAfsId = ntohl(vlentryp->LockAfsId);
384 vlentryp->LockTimestamp = ntohl(vlentryp->LockTimestamp);
385 vlentryp->cloneId = ntohl(vlentryp->cloneId);
386 for (i = 0; i < MAXTYPES; i++)
387 vlentryp->nextIdHash[i] = ntohl(vlentryp->nextIdHash[i]);
388 vlentryp->nextNameHash = ntohl(vlentryp->nextNameHash);
389 for (i = 0; i < NMAXNSERVERS; i++) {
390 /* make sure not to ntohl these, as they're chars, not ints */
391 vlentryp->serverNumber[i] = vlentryp->serverNumber[i];
392 vlentryp->serverPartition[i] = vlentryp->serverPartition[i];
393 vlentryp->serverFlags[i] = vlentryp->serverFlags[i];
396 if (vlentryp->flags == VLCONTBLOCK) {
398 } else if (vlentryp->flags == VLFREE) {
405 quiet_println("address %u: ", addr);
406 if (vlentryp->flags == VLCONTBLOCK) {
407 quiet_println("mh extension block\n");
408 } else if (vlentryp->flags == VLFREE) {
409 quiet_println("free vlentry\n");
411 quiet_println("vlentry %s\n", vlentryp->name);
412 quiet_println(" rw id = %u ; ro id = %u ; bk id = %u\n",
413 vlentryp->volumeId[0], vlentryp->volumeId[1],
414 vlentryp->volumeId[2]);
415 quiet_println(" flags =");
416 if (vlentryp->flags & VLF_RWEXISTS)
417 quiet_println(" rw");
418 if (vlentryp->flags & VLF_ROEXISTS)
419 quiet_println(" ro");
420 if (vlentryp->flags & VLF_BACKEXISTS)
421 quiet_println(" bk");
422 if (vlentryp->flags & VLOP_MOVE)
423 quiet_println(" lock_move");
424 if (vlentryp->flags & VLOP_RELEASE)
425 quiet_println(" lock_release");
426 if (vlentryp->flags & VLOP_BACKUP)
427 quiet_println(" lock_backup");
428 if (vlentryp->flags & VLOP_DELETE)
429 quiet_println(" lock_delete");
430 if (vlentryp->flags & VLOP_DUMP)
431 quiet_println(" lock_dump");
433 /* all bits not covered by VLF_* and VLOP_* constants */
434 if (vlentryp->flags & 0xffff8e0f)
435 quiet_println(" errorflag(0x%x)", vlentryp->flags);
437 quiet_println(" LockAfsId = %d\n", vlentryp->LockAfsId);
438 quiet_println(" LockTimestamp = %d\n", vlentryp->LockTimestamp);
439 quiet_println(" cloneId = %u\n", vlentryp->cloneId);
441 (" next hash for rw = %u ; ro = %u ; bk = %u ; name = %u\n",
442 vlentryp->nextIdHash[0], vlentryp->nextIdHash[1],
443 vlentryp->nextIdHash[2], vlentryp->nextNameHash);
444 for (i = 0; i < NMAXNSERVERS; i++) {
445 if (vlentryp->serverNumber[i] != 255) {
446 quiet_println(" server %d ; partition %d ; flags =",
447 vlentryp->serverNumber[i],
448 vlentryp->serverPartition[i]);
449 if (vlentryp->serverFlags[i] & VLSF_RWVOL)
450 quiet_println(" rw");
451 if (vlentryp->serverFlags[i] & VLSF_ROVOL)
452 quiet_println(" ro");
453 if (vlentryp->serverFlags[i] & VLSF_BACKVOL)
454 quiet_println(" bk");
455 if (vlentryp->serverFlags[i] & VLSF_NEWREPSITE)
456 quiet_println(" newro");
466 writeMH(afs_int32 addr, int block, struct extentaddr *mhblockP)
469 struct extentaddr *e;
472 quiet_println("Writing back MH block % at addr %u\n", block, addr);
475 mhblockP->ex_count = htonl(mhblockP->ex_count);
476 mhblockP->ex_hdrflags = htonl(mhblockP->ex_hdrflags);
477 for (i = 0; i < VL_MAX_ADDREXTBLKS; i++) {
478 mhblockP->ex_contaddrs[i] = htonl(mhblockP->ex_contaddrs[i]);
481 for (i = 1; i < VL_MHSRV_PERBLK; i++) {
483 /* hostuuid was not converted */
484 e->ex_uniquifier = htonl(e->ex_uniquifier);
485 for (j = 0; j < VL_MAXIPADDRS_PERMH; j++) {
486 e->ex_addrs[j] = htonl(e->ex_addrs[j]);
489 vldbwrite(addr, (char *)mhblockP, VL_ADDREXTBLK_SIZE);
493 writeentry(afs_int32 addr, struct nvlentry *vlentryp)
497 if (verbose) quiet_println("Writing back entry at addr %u\n", addr);
498 for (i = 0; i < MAXTYPES; i++)
499 vlentryp->volumeId[i] = htonl(vlentryp->volumeId[i]);
500 vlentryp->flags = htonl(vlentryp->flags);
501 vlentryp->LockAfsId = htonl(vlentryp->LockAfsId);
502 vlentryp->LockTimestamp = htonl(vlentryp->LockTimestamp);
503 vlentryp->cloneId = htonl(vlentryp->cloneId);
504 for (i = 0; i < MAXTYPES; i++)
505 vlentryp->nextIdHash[i] = htonl(vlentryp->nextIdHash[i]);
506 vlentryp->nextNameHash = htonl(vlentryp->nextNameHash);
507 for (i = 0; i < NMAXNSERVERS; i++) {
508 /* make sure not to htonl these, as they're chars, not ints */
509 vlentryp->serverNumber[i] = vlentryp->serverNumber[i] ;
510 vlentryp->serverPartition[i] = vlentryp->serverPartition[i] ;
511 vlentryp->serverFlags[i] = vlentryp->serverFlags[i] ;
513 vldbwrite(addr, (char *)vlentryp, sizeof(*vlentryp));
517 * Read each entry in the database:
518 * Record what type of entry it is and its address in the record array.
519 * Remember what the maximum volume id we found is and check against the header.
522 ReadAllEntries(struct vlheader *header)
524 afs_int32 type, rindex, i, j, e;
525 int freecount = 0, mhcount = 0, vlcount = 0;
526 int rwcount = 0, rocount = 0, bkcount = 0;
527 struct nvlentry vlentry;
529 afs_uint32 entrysize = 0;
530 afs_uint32 maxvolid = 0;
532 if (verbose) quiet_println("Read each entry in the database\n");
533 for (addr = header->vital_header.headersize;
534 addr < header->vital_header.eofPtr; addr += entrysize) {
536 /* Remember the highest volume id */
537 readentry(addr, &vlentry, &type);
539 if (!(vlentry.flags & VLF_RWEXISTS))
540 log_error(VLDB_CHECK_WARNING,"VLDB_CHECK_WARNING: VLDB entry '%s' has no RW volume\n",
543 for (i = 0; i < MAXTYPES; i++)
544 if (maxvolid < vlentry.volumeId[i])
545 maxvolid = vlentry.volumeId[i];
548 for (j = 0; j < NMAXNSERVERS; j++) {
549 if (vlentry.serverNumber[j] == 255)
551 if (vlentry.serverFlags[j] & (VLSF_ROVOL | VLSF_NEWREPSITE)) {
555 if (vlentry.serverFlags[j] & VLSF_RWVOL) {
557 if (vlentry.flags & VLF_BACKEXISTS)
561 if (!vlentry.serverFlags[j]) {
567 (VLDB_CHECK_ERROR,"VLDB entry '%s' contains an unknown RW/RO index serverFlag\n",
572 (" index %d : serverNumber %d : serverPartition %d : serverFlag %d\n",
573 j, vlentry.serverNumber[j], vlentry.serverPartition[j],
574 vlentry.serverFlags[j]);
578 rindex = addr / sizeof(vlentry);
579 if (record[rindex].type) {
580 log_error(VLDB_CHECK_ERROR,"INTERNAL VLDB_CHECK_ERROR: record holder %d already in use\n",
584 record[rindex].addr = addr;
585 record[rindex].type = type;
587 /* Determine entrysize and keep count */
589 entrysize = sizeof(vlentry);
591 } else if (type == FR) {
592 entrysize = sizeof(vlentry);
594 } else if (type == MH) {
595 entrysize = VL_ADDREXTBLK_SIZE;
598 log_error(VLDB_CHECK_ERROR, "Unknown entry at %u. Aborting\n", addr);
603 quiet_println("Found %d entries, %d free entries, %d multihomed blocks\n",
604 vlcount, freecount, mhcount);
605 quiet_println("Found %d RW volumes, %d BK volumes, %d RO volumes\n", rwcount,
609 /* Check the maxmimum volume id in the header */
610 if (maxvolid != header->vital_header.MaxVolumeId - 1)
612 ("Header's maximum volume id is %u and largest id found in VLDB is %u\n",
613 header->vital_header.MaxVolumeId, maxvolid);
617 * Follow each Name hash bucket marking it as read in the record array.
618 * Record we found it in the name hash within the record array.
619 * Check that the name is hashed correctly.
622 FollowNameHash(struct vlheader *header)
624 int count = 0, longest = 0, shortest = -1, chainlength;
625 struct nvlentry vlentry;
627 afs_int32 i, type, rindex;
629 /* Now follow the Name Hash Table */
630 if (verbose) quiet_println("Check Volume Name Hash\n");
631 for (i = 0; i < HASHSIZE; i++) {
634 if (!validVolumeAddr(header->VolnameHash[i])) {
635 log_error(VLDB_CHECK_ERROR,"Name Hash %d: Bad entry %u is out of range\n",
636 i, header->VolnameHash[i]);
640 for (addr = header->VolnameHash[i]; addr; addr = vlentry.nextNameHash) {
641 readentry(addr, &vlentry, &type);
643 log_error(VLDB_CHECK_ERROR,"Name Hash %d: Bad entry at %u: Not a valid vlentry\n",
651 * we know that the address is valid because we
652 * checked it either above or below
654 if (record[rindex].addr != addr && record[rindex].addr) {
656 (VLDB_CHECK_ERROR,"INTERNAL VLDB_CHECK_ERROR: addresses %ld and %u use same record slot %d\n",
657 record[rindex].addr, addr, rindex);
659 if (record[rindex].type & NH) {
661 (VLDB_CHECK_ERROR,"Name Hash %d: Bad entry '%s': Already in the name hash\n",
663 record[rindex].type |= MULTN;
667 if (!validVolumeAddr(vlentry.nextNameHash)) {
668 log_error(VLDB_CHECK_ERROR,"Name Hash forward link of '%s' is out of range\n",
670 record[rindex].type |= MULTN;
674 record[rindex].type |= NH;
675 record[rindex].type |= REFN;
680 /* Hash the name and check if in correct hash table */
681 if (NameHash(vlentry.name) != i) {
683 (VLDB_CHECK_ERROR,"Name Hash %d: Bad entry '%s': Incorrect name hash chain (should be in %d)\n",
684 i, vlentry.name, NameHash(vlentry.name));
685 record[rindex].type |= MULTN;
688 if (chainlength > longest)
689 longest = chainlength;
690 if ((shortest == -1) || (chainlength < shortest))
691 shortest = chainlength;
695 ("%d entries in name hash, longest is %d, shortest is %d, average length is %f\n",
696 count, longest, shortest, ((float)count / (float)HASHSIZE));
702 * Follow the ID hash chains for the RW, RO, and BK hash tables.
703 * Record we found it in the id hash within the record array.
704 * Check that the ID is hashed correctly.
707 FollowIdHash(struct vlheader *header)
709 int count = 0, longest = 0, shortest = -1, chainlength;
710 struct nvlentry vlentry;
712 afs_int32 i, j, hash, type, rindex, ref, badref, badhash;
714 /* Now follow the RW, RO, and BK Hash Tables */
715 if (verbose) quiet_println("Check RW, RO, and BK id Hashes\n");
716 for (i = 0; i < MAXTYPES; i++) {
717 hash = ((i == 0) ? RWH : ((i == 1) ? ROH : BKH));
718 ref = ((i == 0) ? REFRW : ((i == 1) ? REFRO : REFBK));
719 badref = ((i == 0) ? MULTRW : ((i == 1) ? MULTRO : MULTBK));
720 badhash = ((i == 0) ? MULTRW : ((i == 1) ? MULTRO : MULTBK));
724 for (j = 0; j < HASHSIZE; j++) {
726 if (!validVolumeAddr(header->VolidHash[i][j])) {
727 log_error(VLDB_CHECK_ERROR,"%s Hash %d: Bad entry %u is out of range\n",
728 vtype(i), j, header->VolidHash[i][j]);
732 for (addr = header->VolidHash[i][j]; addr;
733 addr = vlentry.nextIdHash[i]) {
734 readentry(addr, &vlentry, &type);
737 (VLDB_CHECK_ERROR,"%s Id Hash %d: Bad entry at %u: Not a valid vlentry\n",
743 if (record[rindex].addr != addr && record[rindex].addr) {
745 (VLDB_CHECK_ERROR,"INTERNAL VLDB_CHECK_ERROR: addresses %ld and %u use same record slot %d\n",
746 record[rindex].addr, addr, rindex);
748 if (record[rindex].type & hash) {
750 (VLDB_CHECK_ERROR,"%s Id Hash %d: Bad entry '%s': Already in the hash table\n",
751 vtype(i), j, vlentry.name);
752 record[rindex].type |= badref;
756 if (!validVolumeAddr(vlentry.nextIdHash[i])) {
757 log_error(VLDB_CHECK_ERROR,"%s Id Hash forward link of '%s' is out of range\n",
758 vtype(i), vlentry.name);
759 record[rindex].type |= badref;
763 record[rindex].type |= hash;
764 record[rindex].type |= ref;
769 /* Hash the id and check if in correct hash table */
770 if (IdHash(vlentry.volumeId[i]) != j) {
772 (VLDB_CHECK_ERROR,"%s Id Hash %d: Bad entry '%s': Incorrect Id hash chain (should be in %d)\n",
773 vtype(i), j, vlentry.name,
774 IdHash(vlentry.volumeId[i]));
775 record[rindex].type |= badhash;
779 if (chainlength > longest)
780 longest = chainlength;
781 if ((shortest == -1) || (chainlength < shortest))
782 shortest = chainlength;
786 ("%d entries in %s hash, longest is %d, shortest is %d, average length is %f\n",
787 count, vtype(i), longest, shortest,((float)count / (float)HASHSIZE));
794 * Follow the free chain.
795 * Record we found it in the free chain within the record array.
798 FollowFreeChain(struct vlheader *header)
801 struct nvlentry vlentry;
803 afs_int32 type, rindex;
805 /* Now follow the Free Chain */
806 if (verbose) quiet_println("Check Volume Free Chain\n");
807 for (addr = header->vital_header.freePtr; addr;
808 addr = vlentry.nextIdHash[0]) {
809 readentry(addr, &vlentry, &type);
812 (VLDB_CHECK_ERROR,"Free Chain %d: Bad entry at %u: Not a valid free vlentry (0x%x)\n",
817 rindex = addr / sizeof(vlentry);
818 if (record[rindex].addr != addr && record[rindex].addr) {
820 (VLDB_CHECK_ERROR,"INTERNAL VLDB_CHECK_ERROR: addresses %u and %ld use same record slot %d\n",
821 record[rindex].addr, addr, rindex);
823 if (record[rindex].type & FRC) {
824 log_error(VLDB_CHECK_ERROR,"Free Chain: Bad entry at %u: Already in the free chain\n",
828 record[rindex].type |= FRC;
833 quiet_println("%d entries on free chain\n", count);
838 * Read each multihomed block and mark it as found in the record.
839 * Read each entry in each multihomed block and mark the serveraddrs
840 * array with the number of ip addresses found for this entry.
842 * Then read the IpMappedAddr array in the header.
843 * Verify that multihomed entries base and index are valid and points to
844 * a good multhomed entry.
845 * Mark the serveraddrs array with 1 ip address for regular entries.
847 * By the end, the severaddrs array will have a 0 if the entry has no
848 * IP addresses in it or the count of the number of IP addresses.
850 * The code does not verify if there are duplicate IP addresses in the
851 * list. The vlserver does this when a fileserver registeres itself.
854 CheckIpAddrs(struct vlheader *header)
857 afs_int32 i, j, m, rindex;
858 afs_int32 mhentries, regentries;
859 char mhblock[VL_ADDREXTBLK_SIZE];
860 struct extentaddr *MHblock = (struct extentaddr *)mhblock;
861 struct extentaddr *e;
862 int ipindex, ipaddrs;
865 memset(&nulluuid, 0, sizeof(nulluuid));
868 quiet_println("Check Multihomed blocks\n");
871 /* Read the first MH block and from it, gather the
872 * addresses of all the mh blocks.
874 readMH(header->SIT, 0, MHblock);
875 if (MHblock->ex_hdrflags != VLCONTBLOCK) {
877 (VLDB_CHECK_ERROR,"Multihomed Block 0: Bad entry at %u: Not a valid multihomed block\n",
881 for (i = 0; i < VL_MAX_ADDREXTBLKS; i++) {
882 mhinfo[i].addr = MHblock->ex_contaddrs[i];
885 if (header->SIT != mhinfo[0].addr) {
887 (VLDB_CHECK_ERROR,"MH block does not point to self %u in header, %u in block\n",
888 header->SIT, mhinfo[0].addr);
891 /* Now read each MH block and record it in the record array */
892 for (i = 0; i < VL_MAX_ADDREXTBLKS; i++) {
896 readMH(mhinfo[i].addr, i, MHblock);
897 if (MHblock->ex_hdrflags != VLCONTBLOCK) {
899 (VLDB_CHECK_ERROR,"Multihomed Block 0: Bad entry at %u: Not a valid multihomed block\n",
903 rindex = mhinfo[i].addr / sizeof(vlentry);
904 if (record[rindex].addr != mhinfo[i].addr && record[rindex].addr) {
906 (VLDB_CHECK_ERROR,"INTERNAL VLDB_CHECK_ERROR: addresses %u and %u use same record slot %d\n",
907 record[rindex].addr, mhinfo[i].addr, rindex);
909 if (record[rindex].type & FRC) {
911 (VLDB_CHECK_ERROR,"MH Blocks Chain %d: Bad entry at %ld: Already a MH block\n",
912 i, record[rindex].addr);
915 record[rindex].type |= MHC;
919 /* Read each entry in a multihomed block.
920 * Find the pointer to the entry in the IpMappedAddr array and
921 * verify that the entry is good (has IP addresses in it).
924 for (j = 1; j < VL_MHSRV_PERBLK; j++) {
925 int first_ipindex = -1;
926 e = (struct extentaddr *)&(MHblock[j]);
928 /* Search the IpMappedAddr array for all the references to this entry. */
929 /* Use the first reference for checking the ip addresses of this entry. */
930 for (ipindex = 0; ipindex <= MAXSERVERID; ipindex++) {
931 if (((header->IpMappedAddr[ipindex] & 0xff000000) == 0xff000000)
932 && (((header-> IpMappedAddr[ipindex] & 0x00ff0000) >> 16) == i)
933 && ((header->IpMappedAddr[ipindex] & 0x0000ffff) == j)) {
934 if (first_ipindex == -1) {
935 first_ipindex = ipindex;
937 serverxref[ipindex] = first_ipindex;
941 ipindex = first_ipindex;
943 serveraddrs[ipindex] = -1;
945 if (memcmp(&e->ex_hostuuid, &nulluuid, sizeof(afsUUID)) == 0) {
948 (VLDB_CHECK_ERROR,"Server Addrs index %d references null MH block %d, index %d\n",
950 serveraddrs[ipindex] = 0; /* avoids printing 2nd error below */
955 /* Step through each ip address and count the good addresses */
957 for (m = 0; m < VL_MAXIPADDRS_PERMH; m++) {
962 /* If we found any good ip addresses, mark it in the serveraddrs record */
966 mhinfo[i].orphan[j] = 1;
968 (VLDB_CHECK_ERROR,"MH block %d, index %d: Not referenced by server addrs\n",
971 serveraddrs[ipindex] = ipaddrs; /* It is good */
975 if (listservers && ipaddrs) {
976 quiet_println("MH block %d, index %d:", i, j);
977 for (m = 0; m < VL_MAXIPADDRS_PERMH; m++) {
980 quiet_println(" %d.%d.%d.%d",
981 (e->ex_addrs[m] & 0xff000000) >> 24,
982 (e->ex_addrs[m] & 0x00ff0000) >> 16,
983 (e->ex_addrs[m] & 0x0000ff00) >> 8,
984 (e->ex_addrs[m] & 0x000000ff));
990 * if (mhentries != MHblock->ex_count) {
991 * quiet_println("MH blocks says it has %d entries (found %d)\n",
992 * MHblock->ex_count, mhentries);
998 quiet_println("%d multihomed blocks\n", mhblocks);
1000 /* Check the server addresses */
1002 quiet_println("Check server addresses\n");
1003 mhentries = regentries = 0;
1004 for (i = 0; i <= MAXSERVERID; i++) {
1005 if (header->IpMappedAddr[i]) {
1006 if ((header->IpMappedAddr[i] & 0xff000000) == 0xff000000) {
1008 if (((header->IpMappedAddr[i] & 0x00ff0000) >> 16) >
1011 (VLDB_CHECK_ERROR,"IP Addr for entry %d: Multihome block is bad (%d)\n",
1012 i, ((header->IpMappedAddr[i] & 0x00ff0000) >> 16));
1013 if (mhinfo[(header->IpMappedAddr[i] & 0x00ff0000) >> 16].addr == 0)
1014 log_error(VLDB_CHECK_ERROR,"IP Addr for entry %d: No such multihome block (%d)\n",
1015 i, ((header->IpMappedAddr[i] & 0x00ff0000) >> 16));
1016 if (((header->IpMappedAddr[i] & 0x0000ffff) > VL_MHSRV_PERBLK)
1017 || ((header->IpMappedAddr[i] & 0x0000ffff) < 1))
1019 (VLDB_CHECK_ERROR,"IP Addr for entry %d: Multihome index is bad (%d)\n",
1020 i, (header->IpMappedAddr[i] & 0x0000ffff));
1021 if (serveraddrs[i] == -1) {
1023 (VLDB_CHECK_WARNING,"warning: IP Addr for entry %d: Multihome entry has no ip addresses\n",
1027 if (serverxref[i] != BADSERVERID) {
1029 (VLDB_CHECK_WARNING,
1030 "warning: MH block %d, index %d is cross-linked by server numbers %d and %d.\n",
1031 (header->IpMappedAddr[i] & 0x00ff0000) >> 16,
1032 (header->IpMappedAddr[i] & 0x0000ffff),
1034 /* set addresses found/not found for this server number,
1035 * using the first index to the mh we found above. */
1036 serveraddrs[i] = serveraddrs[serverxref[i]];
1039 quiet_println(" Server ip addr %d = MH block %d, index %d\n",
1040 i, (header->IpMappedAddr[i] & 0x00ff0000) >> 16,
1041 (header->IpMappedAddr[i] & 0x0000ffff));
1045 serveraddrs[i] = 1; /* It is good */
1047 quiet_println(" Server ip addr %d = %d.%d.%d.%d\n", i,
1048 (header->IpMappedAddr[i] & 0xff000000) >> 24,
1049 (header->IpMappedAddr[i] & 0x00ff0000) >> 16,
1050 (header->IpMappedAddr[i] & 0x0000ff00) >> 8,
1051 (header->IpMappedAddr[i] & 0x000000ff));
1057 quiet_println("%d simple entries, %d multihomed entries, Total = %d\n",
1058 regentries, mhentries, mhentries + regentries);
1064 nameForAddr(afs_uint32 addr, int hashtype, afs_uint32 *hash, char *buffer)
1067 * We need to simplify the reporting, while retaining
1068 * legible messages. This is a helper function. The return address
1069 * is either a fixed char or the provided buffer - so don't use the
1070 * name after the valid lifetime of the buffer.
1073 struct nvlentry entry;
1075 /* Distinguished, invalid, hash */
1078 } else if (!validVolumeAddr(addr)) {
1079 /* Different, invalid, hash */
1083 readentry(addr, &entry, &type);
1088 if (hashtype >= MAXTYPES) {
1089 *hash = NameHash(entry.name);
1091 *hash = IdHash(entry.volumeId[hashtype]);
1093 sprintf(buffer, "for '%s'", entry.name);
1098 reportHashChanges(struct vlheader *header, afs_uint32 oldnamehash[HASHSIZE], afs_uint32 oldidhash[MAXTYPES][HASHSIZE])
1101 afs_uint32 oldhash, newhash;
1102 char oldNameBuffer[10 + VL_MAXNAMELEN];
1103 char newNameBuffer[10 + VL_MAXNAMELEN];
1104 char *oldname, *newname;
1106 * report hash changes
1109 for (i = 0; i < HASHSIZE; i++) {
1110 if (oldnamehash[i] != header->VolnameHash[i]) {
1112 oldname = nameForAddr(oldnamehash[i], MAXTYPES, &oldhash, oldNameBuffer);
1113 newname = nameForAddr(header->VolnameHash[i], MAXTYPES, &newhash, newNameBuffer);
1114 if (verbose || (oldhash != newhash)) {
1115 quiet_println("FIX: Name hash header at %d was %s, is now %s\n", i, oldname, newname);
1118 for (j = 0; j < MAXTYPES; j++) {
1119 if (oldidhash[j][i] != header->VolidHash[j][i]) {
1121 oldname = nameForAddr(oldidhash[j][i], j, &oldhash, oldNameBuffer);
1122 newname = nameForAddr(header->VolidHash[j][i], j, &newhash, newNameBuffer);
1123 if (verbose || (oldhash != newhash)) {
1124 quiet_println("FIX: %s hash header at %d was %s, is now %s\n", vtype(j), i, oldname, newname);
1132 * Remove unreferenced, duplicate multi-home address indices.
1134 * Removes entries from IpMappedAddr which where found to be
1135 * duplicates. Only entries which are not referenced by vl entries
1136 * are removed on this pass.
1138 * @param[inout] header the vldb header to be updated.
1141 removeCrossLinkedAddresses(struct vlheader *header)
1145 for (i = 0; i <= MAXSERVERID; i++) {
1146 if (serverref[i] == 0
1147 && (header->IpMappedAddr[i] & 0xff000000) == 0xff000000
1148 && serverxref[i] != BADSERVERID) {
1149 if (serverxref[i] == i) {
1150 log_error(VLDB_CHECK_ERROR,
1151 "INTERNAL VLDB_CHECK_ERROR: serverxref points to self; index %d\n",
1153 } else if (header->IpMappedAddr[serverxref[i]] == 0) {
1154 log_error(VLDB_CHECK_ERROR,
1155 "INTERNAL VLDB_CHECK_ERROR: serverxref points to empty addr; index %d, value %d\n",
1157 } else if (header->IpMappedAddr[serverxref[i]] != header->IpMappedAddr[i]) {
1158 log_error(VLDB_CHECK_ERROR,
1159 "INTERNAL VLDB_CHECK_ERROR: invalid serverxref; index %d, value %d\n",
1163 ("FIX: Removing unreferenced address index %d, which cross-links MH block %d, index %d\n",
1164 i, (header->IpMappedAddr[i] & 0x00ff0000) >> 16,
1165 (header->IpMappedAddr[i] & 0x0000ffff));
1166 header->IpMappedAddr[i] = 0;
1173 WorkerBee(struct cmd_syndesc *as, void *arock)
1177 struct vlheader header;
1178 struct nvlentry vlentry, vlentry2;
1180 afs_uint32 oldnamehash[HASHSIZE];
1181 afs_uint32 oldidhash[MAXTYPES][HASHSIZE];
1183 error_level = 0; /* start clean with no error status */
1184 dbfile = as->parms[0].items->data; /* -database */
1185 listuheader = (as->parms[1].items ? 1 : 0); /* -uheader */
1186 listheader = (as->parms[2].items ? 1 : 0); /* -vheader */
1187 listservers = (as->parms[3].items ? 1 : 0); /* -servers */
1188 listentries = (as->parms[4].items ? 1 : 0); /* -entries */
1189 verbose = (as->parms[5].items ? 1 : 0); /* -verbose */
1190 quiet = (as->parms[6].items ? 1 : 0); /* -quiet */
1191 fix = (as->parms[7].items ? 1 : 0); /* -fix */
1194 if (quiet && (verbose || listuheader || listheader ||listservers \
1196 log_error(VLDB_CHECK_FATAL," -quiet cannot be used other display flags\n");
1197 return VLDB_CHECK_FATAL;
1201 /* open the vldb database file */
1202 fd = open(dbfile, (fix > 0)?O_RDWR:O_RDONLY, 0);
1204 log_error(VLDB_CHECK_FATAL,"can't open file '%s'. error = %d\n", dbfile, errno);
1208 /* read the ubik header and the vldb database header */
1210 readheader(&header);
1211 if (header.vital_header.vldbversion < 3) {
1212 log_error(VLDB_CHECK_FATAL,"does not support vldb with version less than 3\n");
1213 return VLDB_CHECK_FATAL;
1216 maxentries = (header.vital_header.eofPtr / sizeof(vlentry)) + 1;
1217 record = calloc(maxentries, sizeof(struct er));
1218 memset(serveraddrs, 0, sizeof(serveraddrs));
1219 memset(mhinfo, 0, sizeof(mhinfo));
1220 memset(serverref, 0, sizeof(serverref));
1221 for (i = 0; i <= MAXSERVERID; i++) {
1222 serverxref[i] = BADSERVERID;
1225 /* Will fill in the record array of entries it found */
1226 ReadAllEntries(&header);
1227 listentries = 0; /* Listed all the entries */
1229 /* Check the multihomed blocks for valid entries as well as
1230 * the IpMappedAddrs array in the header for valid entries.
1232 CheckIpAddrs(&header);
1234 /* Follow the hash tables */
1235 FollowNameHash(&header);
1236 FollowIdHash(&header);
1238 /* Follow the chain of free entries */
1239 FollowFreeChain(&header);
1241 /* Now check the record we have been keeping for inconsistencies
1242 * For valid vlentries, also check that the server we point to is
1243 * valid (the serveraddrs array).
1246 quiet_println("Verify each volume entry\n");
1247 for (i = 0; i < maxentries; i++) {
1252 if (record[i].type == 0)
1255 /* If a vlentry, verify that its name is valid, its name and ids are
1256 * on the hash chains, and its server numbers are good.
1258 if (record[i].type & VL) {
1260 int foundbroken = 0;
1263 readentry(record[i].addr, &vlentry, &type);
1265 if (InvalidVolname(vlentry.name))
1266 log_error(VLDB_CHECK_ERROR,"Volume '%s' at addr %ld has an invalid name\n",
1267 vlentry.name, record[i].addr);
1269 if (!(record[i].type & NH)) {
1270 hash = NameHash(vlentry.name);
1276 if (vlentry.volumeId[0] && !(record[i].type & RWH)) {
1277 hash = IdHash(vlentry.volumeId[0]);
1279 sprintf(volidbuf, "id %u ", vlentry.volumeId[0]);
1283 if (vlentry.volumeId[1] && !(record[i].type & ROH)) {
1284 hash = IdHash(vlentry.volumeId[1]);
1286 sprintf(volidbuf, "id %u ", vlentry.volumeId[1]);
1290 if (vlentry.volumeId[2] && !(record[i].type & BKH)) {
1291 hash = IdHash(vlentry.volumeId[2]);
1293 sprintf(volidbuf, "id %u ", vlentry.volumeId[2]);
1297 if (!validVolumeAddr(vlentry.nextNameHash) ||
1298 record[ADDR(vlentry.nextNameHash)].type & MULTN) {
1299 hash = NameHash(vlentry.name);
1302 if (validVolumeAddr(vlentry.nextNameHash)) {
1303 readentry(vlentry.nextNameHash, &vlentry2, &type);
1304 nexthash = NameHash(vlentry2.name);
1306 nexthash = 0xFFFFFFFF;
1308 if (hash != nexthash)
1312 if (!validVolumeAddr(vlentry.nextIdHash[0]) ||
1313 record[ADDR(vlentry.nextIdHash[0])].type & MULTRW) {
1314 hash = IdHash(vlentry.volumeId[0]);
1316 sprintf(volidbuf, "id %u ", vlentry.volumeId[0]);
1317 if (validVolumeAddr(vlentry.nextIdHash[0])) {
1318 readentry(vlentry.nextIdHash[0], &vlentry2, &type);
1319 nexthash = IdHash(vlentry2.volumeId[0]);
1321 nexthash = 0xFFFFFFFF;
1323 if (hash != nexthash)
1327 if (!validVolumeAddr(vlentry.nextIdHash[1]) ||
1328 record[ADDR(vlentry.nextIdHash[1])].type & MULTRO) {
1329 hash = IdHash(vlentry.volumeId[1]);
1331 sprintf(volidbuf, "id %u ", vlentry.volumeId[1]);
1332 if (validVolumeAddr(vlentry.nextIdHash[1])) {
1333 readentry(vlentry.nextIdHash[1], &vlentry2, &type);
1334 nexthash = IdHash(vlentry2.volumeId[1]);
1336 nexthash = 0xFFFFFFFF;
1338 if (hash != nexthash)
1342 if (!validVolumeAddr(vlentry.nextIdHash[2]) ||
1343 record[ADDR(vlentry.nextIdHash[2])].type & MULTBK) {
1344 hash = IdHash(vlentry.volumeId[2]);
1346 sprintf(volidbuf, "id %u ", vlentry.volumeId[2]);
1347 if (validVolumeAddr(vlentry.nextIdHash[2])) {
1348 readentry(vlentry.nextIdHash[2], &vlentry2, &type);
1349 nexthash = IdHash(vlentry2.volumeId[2]);
1351 nexthash = 0xFFFFFFFF;
1353 if (hash != nexthash)
1358 log_error(VLDB_CHECK_ERROR, "%d: Volume '%s' %s forward link in %s hash chain is broken (hash %d != %d)\n", i,
1359 vlentry.name, volidbuf, which, hash, nexthash);
1360 } else if (foundbad) {
1361 log_error(VLDB_CHECK_ERROR, "%d: Volume '%s' %snot found in %s hash %d\n", i,
1362 vlentry.name, volidbuf, which, hash);
1365 for (j = 0; j < NMAXNSERVERS; j++) {
1366 if (vlentry.serverNumber[j] != BADSERVERID) {
1367 serverref[vlentry.serverNumber[j]] = 1;
1368 if (serveraddrs[vlentry.serverNumber[j]] == 0) {
1370 (VLDB_CHECK_ERROR,"Volume '%s', index %d points to empty server entry %d\n",
1371 vlentry.name, j, vlentry.serverNumber[j]);
1372 } else if (serverxref[vlentry.serverNumber[j]] != BADSERVERID) {
1374 (VLDB_CHECK_ERROR,"Volume '%s', index %d points to server entry %d, which is cross-linked by %d\n",
1375 vlentry.name, j, vlentry.serverNumber[j], serverxref[vlentry.serverNumber[j]]);
1380 if (record[i].type & 0xffff0f00)
1382 (VLDB_CHECK_ERROR,"Volume '%s' id %u also found on other chains (0x%x)\n",
1383 vlentry.name, vlentry.volumeId[0], record[i].type);
1386 } else if (record[i].type & FR) {
1387 if (!(record[i].type & FRC))
1388 log_error(VLDB_CHECK_ERROR,"Free vlentry at %ld not on free chain\n",
1391 if (record[i].type & 0xfffffdf0)
1393 (VLDB_CHECK_ERROR,"Free vlentry at %ld also found on other chains (0x%x)\n",
1394 record[i].addr, record[i].type);
1396 /* A multihomed entry */
1397 } else if (record[i].type & MH) {
1398 if (!(record[i].type & MHC))
1399 log_error(VLDB_CHECK_ERROR,"Multihomed block at %ld is orphaned\n",
1402 if (record[i].type & 0xfffffef0)
1404 (VLDB_CHECK_ERROR,"Multihomed block at %ld also found on other chains (0x%x)\n",
1405 record[i].addr, record[i].type);
1408 log_error(VLDB_CHECK_ERROR,"Unknown entry type at %u (0x%x)\n", record[i].addr,
1415 * If we are fixing we will rebuild all the hash lists from the ground up
1417 memcpy(oldnamehash, header.VolnameHash, sizeof(oldnamehash));
1418 memset(header.VolnameHash, 0, sizeof(header.VolnameHash));
1420 memcpy(oldidhash, header.VolidHash, sizeof(oldidhash));
1421 memset(header.VolidHash, 0, sizeof(header.VolidHash));
1422 quiet_println("Rebuilding %u entries\n", maxentries);
1424 quiet_println("Scanning %u entries for possible repairs\n", maxentries);
1426 for (i = 0; i < maxentries; i++) {
1428 if (record[i].type & VL) {
1429 readentry(record[i].addr, &vlentry, &type);
1430 if (!(record[i].type & REFN)) {
1431 log_error(VLDB_CHECK_ERROR,"%d: Record %ld (type 0x%x) not in a name chain\n", i,
1432 record[i].addr, record[i].type);
1434 if (vlentry.volumeId[0] && !(record[i].type & REFRW)) {
1435 log_error(VLDB_CHECK_ERROR,"%d: Record %ld (type 0x%x) not in a RW chain\n", i,
1436 record[i].addr, record[i].type);
1438 if (vlentry.volumeId[1] && !(record[i].type & REFRO)) {
1439 log_error(VLDB_CHECK_ERROR,"%d: Record %ld (type 0x%x) not in a RO chain\n", i,
1440 record[i].addr, record[i].type);
1442 if (vlentry.volumeId[2] && !(record[i].type & REFBK)) {
1443 log_error(VLDB_CHECK_ERROR,"%d: Record %ld (type 0x%x) not in a BK chain\n", i,
1444 record[i].addr, record[i].type);
1447 afs_uint32 oldhash, newhash;
1448 char oldNameBuffer[10 + VL_MAXNAMELEN];
1449 char newNameBuffer[10 + VL_MAXNAMELEN];
1450 char *oldname, *newname;
1452 /* Fix broken names and numbers so entries can be inspected and deleted. */
1453 if (InvalidVolname(vlentry.name)) {
1454 char bogus[VL_MAXNAMELEN];
1455 memset(bogus, 0, sizeof(bogus));
1456 snprintf(bogus, sizeof(bogus)-1, ".bogus.%ld", record[i].addr);
1457 strcpy(vlentry.name, bogus);
1458 quiet_println("FIX: Record %ld invalid volume name set to '%s'\n", record[i].addr, bogus);
1460 if (vlentry.volumeId[0] == 0) {
1461 afs_uint32 next_volid = header.vital_header.MaxVolumeId++;
1462 vlentry.volumeId[0] = next_volid;
1463 quiet_println("FIX: Record %ld invalid volume id set to %ld. New max volid is %ld\n",
1464 record[i].addr, next_volid, header.vital_header.MaxVolumeId);
1468 * Put the current hash table contexts into our 'next'
1469 * and our address into the hash table.
1471 hash = NameHash(vlentry.name);
1473 if (vlentry.nextNameHash != header.VolnameHash[hash]) {
1474 oldname = nameForAddr(vlentry.nextNameHash, MAXTYPES, &oldhash, oldNameBuffer);
1475 newname = nameForAddr(header.VolnameHash[hash], MAXTYPES, &newhash, newNameBuffer);
1476 if (verbose || ((oldhash != newhash) &&
1477 (0 != vlentry.nextNameHash) &&
1478 (0 != header.VolnameHash[hash]))) {
1480 * That is, only report if we are verbose
1481 * or the hash is changing (and one side wasn't NULL
1483 quiet_println("FIX: Name hash link for '%s' was %s, is now %s\n",
1484 vlentry.name, oldname, newname);
1488 vlentry.nextNameHash = header.VolnameHash[hash];
1489 header.VolnameHash[hash] = record[i].addr;
1491 for (j = 0; j < MAXTYPES; j++) {
1493 if (0 == vlentry.volumeId[j]) {
1495 * No volume of that type. Continue
1499 hash = IdHash(vlentry.volumeId[j]);
1501 if (vlentry.nextIdHash[j] != header.VolidHash[j][hash]) {
1502 oldname = nameForAddr(vlentry.nextIdHash[j], j, &oldhash, oldNameBuffer);
1503 newname = nameForAddr(header.VolidHash[j][hash], j, &newhash, newNameBuffer);
1504 if (verbose || ((oldhash != newhash) &&
1505 (0 != vlentry.nextIdHash[j]) &&
1506 (0 != header.VolidHash[j][hash]))) {
1507 quiet_println("FIX: %s hash link for '%s' was %s, is now %s\n",
1508 vtype(j), vlentry.name, oldname, newname);
1512 /* Consolidate server numbers which point to the same mh entry.
1513 * The serverref flags are not reset here, since we want to make
1514 * sure the data is actually written before the server number is
1515 * considered unreferenced. */
1516 for (k = 0; k < NMAXNSERVERS; k++) {
1517 if (vlentry.serverNumber[k] != BADSERVERID
1518 && serverxref[vlentry.serverNumber[k]] != BADSERVERID) {
1519 u_char oldsn = vlentry.serverNumber[k];
1520 u_char newsn = serverxref[oldsn];
1521 if (newsn == oldsn) {
1522 log_error(VLDB_CHECK_ERROR,
1523 "INTERNAL VLDB_CHECK_ERROR: serverxref points to self; index %d\n",
1525 } else if (header.IpMappedAddr[oldsn] == 0) {
1526 log_error(VLDB_CHECK_ERROR,
1527 "INTERNAL VLDB_CHECK_ERROR: serverxref; points to empty address; index %d, value %d\n",
1529 } else if (header.IpMappedAddr[newsn] != header.IpMappedAddr[oldsn]) {
1530 log_error(VLDB_CHECK_ERROR,
1531 "INTERNAL VLDB_CHECK_ERROR: invalid serverxref; index %d\n",
1535 ("FIX: Volume '%s', index %d, server number was %d, is now %d\n",
1536 vlentry.name, k, oldsn, newsn);
1537 vlentry.serverNumber[k] = newsn;
1542 vlentry.nextIdHash[j] = header.VolidHash[j][hash];
1543 header.VolidHash[j][hash] = record[i].addr;
1545 writeentry(record[i].addr, &vlentry);
1548 else if (record[i].type & MH) {
1550 char mhblock[VL_ADDREXTBLK_SIZE];
1551 struct extentaddr *MHblock = (struct extentaddr *)mhblock;
1554 for (block = 0; block < VL_MAX_ADDREXTBLKS; block++) {
1555 if (mhinfo[block].addr == record[i].addr)
1558 if (block == VL_MAX_ADDREXTBLKS) {
1559 continue; /* skip orphaned extent block */
1561 readMH(record[i].addr, block, MHblock);
1562 for (index = 0; index < VL_MHSRV_PERBLK; index++) {
1563 if (mhinfo[block].orphan[index]) {
1564 quiet_println("FIX: Removing unreferenced mh entry; block %d, index %d\n",
1566 memset(&(MHblock[index]), 0, sizeof(struct extentaddr));
1569 writeMH(record[i].addr, block, MHblock);
1574 reportHashChanges(&header, oldnamehash, oldidhash);
1575 removeCrossLinkedAddresses(&header);
1576 writeheader(&header);
1585 main(int argc, char **argv)
1587 struct cmd_syndesc *ts;
1591 ts = cmd_CreateSyntax(NULL, WorkerBee, NULL, "vldb check");
1592 cmd_AddParm(ts, "-database", CMD_SINGLE, CMD_REQUIRED, "vldb_file");
1593 cmd_AddParm(ts, "-uheader", CMD_FLAG, CMD_OPTIONAL,
1594 "Display UBIK header");
1595 cmd_AddParm(ts, "-vheader", CMD_FLAG, CMD_OPTIONAL,
1596 "Display VLDB header");
1597 cmd_AddParm(ts, "-servers", CMD_FLAG, CMD_OPTIONAL,
1598 "Display server list");
1599 cmd_AddParm(ts, "-entries", CMD_FLAG, CMD_OPTIONAL, "Display entries");
1600 cmd_AddParm(ts, "-verbose", CMD_FLAG, CMD_OPTIONAL, "verbose");
1601 cmd_AddParm(ts, "-quiet", CMD_FLAG, CMD_OPTIONAL, "quiet");
1602 cmd_AddParm(ts, "-fix", CMD_FLAG, CMD_OPTIONAL, "attempt to patch the database (potentially dangerous)");
1604 return cmd_Dispatch(argc, argv);