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)
229 return (slen != strspn(volname, map));
233 validVolumeAddr(afs_uint32 fileOffset)
235 if (ADDR(fileOffset) >= maxentries) {
236 /* Are we in range */
240 * We cannot test whether the offset is aligned
241 * since the vl entries are not in a regular array
247 readheader(struct vlheader *headerp)
251 vldbread(0, (char *)headerp, sizeof(*headerp));
253 headerp->vital_header.vldbversion =
254 ntohl(headerp->vital_header.vldbversion);
255 headerp->vital_header.headersize =
256 ntohl(headerp->vital_header.headersize);
257 headerp->vital_header.freePtr = ntohl(headerp->vital_header.freePtr);
258 headerp->vital_header.eofPtr = ntohl(headerp->vital_header.eofPtr);
259 headerp->vital_header.allocs = ntohl(headerp->vital_header.allocs);
260 headerp->vital_header.frees = ntohl(headerp->vital_header.frees);
261 headerp->vital_header.MaxVolumeId =
262 ntohl(headerp->vital_header.MaxVolumeId);
263 headerp->vital_header.totalEntries[0] =
264 ntohl(headerp->vital_header.totalEntries[0]);
265 for (i = 0; i < MAXTYPES; i++)
266 headerp->vital_header.totalEntries[i] =
267 ntohl(headerp->vital_header.totalEntries[1]);
269 headerp->SIT = ntohl(headerp->SIT);
270 for (i = 0; i <= MAXSERVERID; i++)
271 headerp->IpMappedAddr[i] = ntohl(headerp->IpMappedAddr[i]);
272 for (i = 0; i < HASHSIZE; i++)
273 headerp->VolnameHash[i] = ntohl(headerp->VolnameHash[i]);
274 for (i = 0; i < MAXTYPES; i++)
275 for (j = 0; j < HASHSIZE; j++)
276 headerp->VolidHash[i][j] = ntohl(headerp->VolidHash[i][j]);
279 quiet_println("vldb header\n");
280 quiet_println(" vldbversion = %u\n",
281 headerp->vital_header.vldbversion);
282 quiet_println(" headersize = %u [actual=%lu]\n",
283 headerp->vital_header.headersize, sizeof(*headerp));
284 quiet_println(" freePtr = 0x%x\n", headerp->vital_header.freePtr);
285 quiet_println(" eofPtr = %u\n", headerp->vital_header.eofPtr);
286 quiet_println(" allocblock calls = %10u\n", headerp->vital_header.allocs);
287 quiet_println(" freeblock calls = %10u\n", headerp->vital_header.frees);
288 quiet_println(" MaxVolumeId = %u\n",
289 headerp->vital_header.MaxVolumeId);
290 quiet_println(" rw vol entries = %u\n",
291 headerp->vital_header.totalEntries[0]);
292 quiet_println(" ro vol entries = %u\n",
293 headerp->vital_header.totalEntries[1]);
294 quiet_println(" bk vol entries = %u\n",
295 headerp->vital_header.totalEntries[2]);
296 quiet_println(" multihome info = 0x%x (%u)\n", headerp->SIT,
298 quiet_println(" server ip addr table: size = %d entries\n",
300 quiet_println(" volume name hash table: size = %d buckets\n", HASHSIZE);
301 quiet_println(" volume id hash table: %d tables with %d buckets each\n",
305 /* Check the header size */
306 if (headerp->vital_header.headersize != sizeof(*headerp))
307 log_error(VLDB_CHECK_WARNING,"Header reports its size as %d (should be %lu)\n",
308 headerp->vital_header.headersize, sizeof(*headerp));
313 writeheader(struct vlheader *headerp)
317 headerp->vital_header.vldbversion =
318 htonl(headerp->vital_header.vldbversion);
319 headerp->vital_header.headersize =
320 htonl(headerp->vital_header.headersize);
321 headerp->vital_header.freePtr = htonl(headerp->vital_header.freePtr);
322 headerp->vital_header.eofPtr = htonl(headerp->vital_header.eofPtr);
323 headerp->vital_header.allocs = htonl(headerp->vital_header.allocs);
324 headerp->vital_header.frees = htonl(headerp->vital_header.frees);
325 headerp->vital_header.MaxVolumeId =
326 htonl(headerp->vital_header.MaxVolumeId);
327 headerp->vital_header.totalEntries[0] =
328 htonl(headerp->vital_header.totalEntries[0]);
329 for (i = 0; i < MAXTYPES; i++)
330 headerp->vital_header.totalEntries[i] =
331 htonl(headerp->vital_header.totalEntries[1]);
333 headerp->SIT = htonl(headerp->SIT);
334 for (i = 0; i <= MAXSERVERID; i++)
335 headerp->IpMappedAddr[i] = htonl(headerp->IpMappedAddr[i]);
336 for (i = 0; i < HASHSIZE; i++)
337 headerp->VolnameHash[i] = htonl(headerp->VolnameHash[i]);
338 for (i = 0; i < MAXTYPES; i++)
339 for (j = 0; j < HASHSIZE; j++)
340 headerp->VolidHash[i][j] = htonl(headerp->VolidHash[i][j]);
342 vldbwrite(0, (char *)headerp, sizeof(*headerp));
346 readMH(afs_uint32 addr, int block, struct extentaddr *mhblockP)
349 struct extentaddr *e;
351 vldbread(addr, (char *)mhblockP, VL_ADDREXTBLK_SIZE);
354 mhblockP->ex_count = ntohl(mhblockP->ex_count);
355 mhblockP->ex_hdrflags = ntohl(mhblockP->ex_hdrflags);
356 for (i = 0; i < VL_MAX_ADDREXTBLKS; i++) {
357 mhblockP->ex_contaddrs[i] = ntohl(mhblockP->ex_contaddrs[i]);
360 for (i = 1; i < VL_MHSRV_PERBLK; i++) {
363 /* won't convert hostuuid */
364 e->ex_uniquifier = ntohl(e->ex_uniquifier);
365 for (j = 0; j < VL_MAXIPADDRS_PERMH; j++)
366 e->ex_addrs[j] = ntohl(e->ex_addrs[j]);
372 readentry(afs_int32 addr, struct nvlentry *vlentryp, afs_int32 *type)
376 vldbread(addr, (char *)vlentryp, sizeof(*vlentryp));
378 for (i = 0; i < MAXTYPES; i++)
379 vlentryp->volumeId[i] = ntohl(vlentryp->volumeId[i]);
380 vlentryp->flags = ntohl(vlentryp->flags);
381 vlentryp->LockAfsId = ntohl(vlentryp->LockAfsId);
382 vlentryp->LockTimestamp = ntohl(vlentryp->LockTimestamp);
383 vlentryp->cloneId = ntohl(vlentryp->cloneId);
384 for (i = 0; i < MAXTYPES; i++)
385 vlentryp->nextIdHash[i] = ntohl(vlentryp->nextIdHash[i]);
386 vlentryp->nextNameHash = ntohl(vlentryp->nextNameHash);
387 for (i = 0; i < NMAXNSERVERS; i++) {
388 /* make sure not to ntohl these, as they're chars, not ints */
389 vlentryp->serverNumber[i] = vlentryp->serverNumber[i];
390 vlentryp->serverPartition[i] = vlentryp->serverPartition[i];
391 vlentryp->serverFlags[i] = vlentryp->serverFlags[i];
394 if (vlentryp->flags == VLCONTBLOCK) {
396 } else if (vlentryp->flags == VLFREE) {
403 quiet_println("address %u: ", addr);
404 if (vlentryp->flags == VLCONTBLOCK) {
405 quiet_println("mh extension block\n");
406 } else if (vlentryp->flags == VLFREE) {
407 quiet_println("free vlentry\n");
409 quiet_println("vlentry %s\n", vlentryp->name);
410 quiet_println(" rw id = %u ; ro id = %u ; bk id = %u\n",
411 vlentryp->volumeId[0], vlentryp->volumeId[1],
412 vlentryp->volumeId[2]);
413 quiet_println(" flags =");
414 if (vlentryp->flags & VLF_RWEXISTS)
415 quiet_println(" rw");
416 if (vlentryp->flags & VLF_ROEXISTS)
417 quiet_println(" ro");
418 if (vlentryp->flags & VLF_BACKEXISTS)
419 quiet_println(" bk");
420 if (vlentryp->flags & VLOP_MOVE)
421 quiet_println(" lock_move");
422 if (vlentryp->flags & VLOP_RELEASE)
423 quiet_println(" lock_release");
424 if (vlentryp->flags & VLOP_BACKUP)
425 quiet_println(" lock_backup");
426 if (vlentryp->flags & VLOP_DELETE)
427 quiet_println(" lock_delete");
428 if (vlentryp->flags & VLOP_DUMP)
429 quiet_println(" lock_dump");
431 /* all bits not covered by VLF_* and VLOP_* constants */
432 if (vlentryp->flags & 0xffff8e0f)
433 quiet_println(" errorflag(0x%x)", vlentryp->flags);
435 quiet_println(" LockAfsId = %d\n", vlentryp->LockAfsId);
436 quiet_println(" LockTimestamp = %d\n", vlentryp->LockTimestamp);
437 quiet_println(" cloneId = %u\n", vlentryp->cloneId);
439 (" next hash for rw = %u ; ro = %u ; bk = %u ; name = %u\n",
440 vlentryp->nextIdHash[0], vlentryp->nextIdHash[1],
441 vlentryp->nextIdHash[2], vlentryp->nextNameHash);
442 for (i = 0; i < NMAXNSERVERS; i++) {
443 if (vlentryp->serverNumber[i] != 255) {
444 quiet_println(" server %d ; partition %d ; flags =",
445 vlentryp->serverNumber[i],
446 vlentryp->serverPartition[i]);
447 if (vlentryp->serverFlags[i] & VLSF_RWVOL)
448 quiet_println(" rw");
449 if (vlentryp->serverFlags[i] & VLSF_ROVOL)
450 quiet_println(" ro");
451 if (vlentryp->serverFlags[i] & VLSF_BACKVOL)
452 quiet_println(" bk");
453 if (vlentryp->serverFlags[i] & VLSF_NEWREPSITE)
454 quiet_println(" newro");
464 writeMH(afs_int32 addr, int block, struct extentaddr *mhblockP)
467 struct extentaddr *e;
470 quiet_println("Writing back MH block % at addr %u\n", block, addr);
473 mhblockP->ex_count = htonl(mhblockP->ex_count);
474 mhblockP->ex_hdrflags = htonl(mhblockP->ex_hdrflags);
475 for (i = 0; i < VL_MAX_ADDREXTBLKS; i++) {
476 mhblockP->ex_contaddrs[i] = htonl(mhblockP->ex_contaddrs[i]);
479 for (i = 1; i < VL_MHSRV_PERBLK; i++) {
481 /* hostuuid was not converted */
482 e->ex_uniquifier = htonl(e->ex_uniquifier);
483 for (j = 0; j < VL_MAXIPADDRS_PERMH; j++) {
484 e->ex_addrs[j] = htonl(e->ex_addrs[j]);
487 vldbwrite(addr, (char *)mhblockP, VL_ADDREXTBLK_SIZE);
491 writeentry(afs_int32 addr, struct nvlentry *vlentryp)
495 if (verbose) quiet_println("Writing back entry at addr %u\n", addr);
496 for (i = 0; i < MAXTYPES; i++)
497 vlentryp->volumeId[i] = htonl(vlentryp->volumeId[i]);
498 vlentryp->flags = htonl(vlentryp->flags);
499 vlentryp->LockAfsId = htonl(vlentryp->LockAfsId);
500 vlentryp->LockTimestamp = htonl(vlentryp->LockTimestamp);
501 vlentryp->cloneId = htonl(vlentryp->cloneId);
502 for (i = 0; i < MAXTYPES; i++)
503 vlentryp->nextIdHash[i] = htonl(vlentryp->nextIdHash[i]);
504 vlentryp->nextNameHash = htonl(vlentryp->nextNameHash);
505 for (i = 0; i < NMAXNSERVERS; i++) {
506 /* make sure not to htonl these, as they're chars, not ints */
507 vlentryp->serverNumber[i] = vlentryp->serverNumber[i] ;
508 vlentryp->serverPartition[i] = vlentryp->serverPartition[i] ;
509 vlentryp->serverFlags[i] = vlentryp->serverFlags[i] ;
511 vldbwrite(addr, (char *)vlentryp, sizeof(*vlentryp));
515 * Read each entry in the database:
516 * Record what type of entry it is and its address in the record array.
517 * Remember what the maximum volume id we found is and check against the header.
520 ReadAllEntries(struct vlheader *header)
522 afs_int32 type, rindex, i, j, e;
523 int freecount = 0, mhcount = 0, vlcount = 0;
524 int rwcount = 0, rocount = 0, bkcount = 0;
525 struct nvlentry vlentry;
527 afs_uint32 entrysize = 0;
528 afs_uint32 maxvolid = 0;
530 if (verbose) quiet_println("Read each entry in the database\n");
531 for (addr = header->vital_header.headersize;
532 addr < header->vital_header.eofPtr; addr += entrysize) {
534 /* Remember the highest volume id */
535 readentry(addr, &vlentry, &type);
537 if (!(vlentry.flags & VLF_RWEXISTS))
538 log_error(VLDB_CHECK_WARNING,"VLDB_CHECK_WARNING: VLDB entry '%s' has no RW volume\n",
541 for (i = 0; i < MAXTYPES; i++)
542 if (maxvolid < vlentry.volumeId[i])
543 maxvolid = vlentry.volumeId[i];
546 for (j = 0; j < NMAXNSERVERS; j++) {
547 if (vlentry.serverNumber[j] == 255)
549 if (vlentry.serverFlags[j] & (VLSF_ROVOL | VLSF_NEWREPSITE)) {
553 if (vlentry.serverFlags[j] & VLSF_RWVOL) {
555 if (vlentry.flags & VLF_BACKEXISTS)
559 if (!vlentry.serverFlags[j]) {
565 (VLDB_CHECK_ERROR,"VLDB entry '%s' contains an unknown RW/RO index serverFlag\n",
570 (" index %d : serverNumber %d : serverPartition %d : serverFlag %d\n",
571 j, vlentry.serverNumber[j], vlentry.serverPartition[j],
572 vlentry.serverFlags[j]);
576 rindex = addr / sizeof(vlentry);
577 if (record[rindex].type) {
578 log_error(VLDB_CHECK_ERROR,"INTERNAL VLDB_CHECK_ERROR: record holder %d already in use\n",
582 record[rindex].addr = addr;
583 record[rindex].type = type;
585 /* Determine entrysize and keep count */
587 entrysize = sizeof(vlentry);
589 } else if (type == FR) {
590 entrysize = sizeof(vlentry);
592 } else if (type == MH) {
593 entrysize = VL_ADDREXTBLK_SIZE;
596 log_error(VLDB_CHECK_ERROR, "Unknown entry at %u. Aborting\n", addr);
601 quiet_println("Found %d entries, %d free entries, %d multihomed blocks\n",
602 vlcount, freecount, mhcount);
603 quiet_println("Found %d RW volumes, %d BK volumes, %d RO volumes\n", rwcount,
607 /* Check the maxmimum volume id in the header */
608 if (maxvolid != header->vital_header.MaxVolumeId - 1)
610 ("Header's maximum volume id is %u and largest id found in VLDB is %u\n",
611 header->vital_header.MaxVolumeId, maxvolid);
615 * Follow each Name hash bucket marking it as read in the record array.
616 * Record we found it in the name hash within the record array.
617 * Check that the name is hashed correctly.
620 FollowNameHash(struct vlheader *header)
622 int count = 0, longest = 0, shortest = -1, chainlength;
623 struct nvlentry vlentry;
625 afs_int32 i, type, rindex;
627 /* Now follow the Name Hash Table */
628 if (verbose) quiet_println("Check Volume Name Hash\n");
629 for (i = 0; i < HASHSIZE; i++) {
632 if (!validVolumeAddr(header->VolnameHash[i])) {
633 log_error(VLDB_CHECK_ERROR,"Name Hash %d: Bad entry %u is out of range\n",
634 i, header->VolnameHash[i]);
638 for (addr = header->VolnameHash[i]; addr; addr = vlentry.nextNameHash) {
639 readentry(addr, &vlentry, &type);
641 log_error(VLDB_CHECK_ERROR,"Name Hash %d: Bad entry at %u: Not a valid vlentry\n",
649 * we know that the address is valid because we
650 * checked it either above or below
652 if (record[rindex].addr != addr && record[rindex].addr) {
654 (VLDB_CHECK_ERROR,"INTERNAL VLDB_CHECK_ERROR: addresses %ld and %u use same record slot %d\n",
655 record[rindex].addr, addr, rindex);
657 if (record[rindex].type & NH) {
659 (VLDB_CHECK_ERROR,"Name Hash %d: Bad entry '%s': Already in the name hash\n",
661 record[rindex].type |= MULTN;
665 if (!validVolumeAddr(vlentry.nextNameHash)) {
666 log_error(VLDB_CHECK_ERROR,"Name Hash forward link of '%s' is out of range\n",
668 record[rindex].type |= MULTN;
672 record[rindex].type |= NH;
673 record[rindex].type |= REFN;
678 /* Hash the name and check if in correct hash table */
679 if (NameHash(vlentry.name) != i) {
681 (VLDB_CHECK_ERROR,"Name Hash %d: Bad entry '%s': Incorrect name hash chain (should be in %d)\n",
682 i, vlentry.name, NameHash(vlentry.name));
683 record[rindex].type |= MULTN;
686 if (chainlength > longest)
687 longest = chainlength;
688 if ((shortest == -1) || (chainlength < shortest))
689 shortest = chainlength;
693 ("%d entries in name hash, longest is %d, shortest is %d, average length is %f\n",
694 count, longest, shortest, ((float)count / (float)HASHSIZE));
700 * Follow the ID hash chains for the RW, RO, and BK hash tables.
701 * Record we found it in the id hash within the record array.
702 * Check that the ID is hashed correctly.
705 FollowIdHash(struct vlheader *header)
707 int count = 0, longest = 0, shortest = -1, chainlength;
708 struct nvlentry vlentry;
710 afs_int32 i, j, hash, type, rindex, ref, badref, badhash;
712 /* Now follow the RW, RO, and BK Hash Tables */
713 if (verbose) quiet_println("Check RW, RO, and BK id Hashes\n");
714 for (i = 0; i < MAXTYPES; i++) {
715 hash = ((i == 0) ? RWH : ((i == 1) ? ROH : BKH));
716 ref = ((i == 0) ? REFRW : ((i == 1) ? REFRO : REFBK));
717 badref = ((i == 0) ? MULTRW : ((i == 1) ? MULTRO : MULTBK));
718 badhash = ((i == 0) ? MULTRW : ((i == 1) ? MULTRO : MULTBK));
722 for (j = 0; j < HASHSIZE; j++) {
724 if (!validVolumeAddr(header->VolidHash[i][j])) {
725 log_error(VLDB_CHECK_ERROR,"%s Hash %d: Bad entry %u is out of range\n",
726 vtype(i), j, header->VolidHash[i][j]);
730 for (addr = header->VolidHash[i][j]; addr;
731 addr = vlentry.nextIdHash[i]) {
732 readentry(addr, &vlentry, &type);
735 (VLDB_CHECK_ERROR,"%s Id Hash %d: Bad entry at %u: Not a valid vlentry\n",
741 if (record[rindex].addr != addr && record[rindex].addr) {
743 (VLDB_CHECK_ERROR,"INTERNAL VLDB_CHECK_ERROR: addresses %ld and %u use same record slot %d\n",
744 record[rindex].addr, addr, rindex);
746 if (record[rindex].type & hash) {
748 (VLDB_CHECK_ERROR,"%s Id Hash %d: Bad entry '%s': Already in the hash table\n",
749 vtype(i), j, vlentry.name);
750 record[rindex].type |= badref;
754 if (!validVolumeAddr(vlentry.nextIdHash[i])) {
755 log_error(VLDB_CHECK_ERROR,"%s Id Hash forward link of '%s' is out of range\n",
756 vtype(i), vlentry.name);
757 record[rindex].type |= badref;
761 record[rindex].type |= hash;
762 record[rindex].type |= ref;
767 /* Hash the id and check if in correct hash table */
768 if (IdHash(vlentry.volumeId[i]) != j) {
770 (VLDB_CHECK_ERROR,"%s Id Hash %d: Bad entry '%s': Incorrect Id hash chain (should be in %d)\n",
771 vtype(i), j, vlentry.name,
772 IdHash(vlentry.volumeId[i]));
773 record[rindex].type |= badhash;
777 if (chainlength > longest)
778 longest = chainlength;
779 if ((shortest == -1) || (chainlength < shortest))
780 shortest = chainlength;
784 ("%d entries in %s hash, longest is %d, shortest is %d, average length is %f\n",
785 count, vtype(i), longest, shortest,((float)count / (float)HASHSIZE));
792 * Follow the free chain.
793 * Record we found it in the free chain within the record array.
796 FollowFreeChain(struct vlheader *header)
799 struct nvlentry vlentry;
801 afs_int32 type, rindex;
803 /* Now follow the Free Chain */
804 if (verbose) quiet_println("Check Volume Free Chain\n");
805 for (addr = header->vital_header.freePtr; addr;
806 addr = vlentry.nextIdHash[0]) {
807 readentry(addr, &vlentry, &type);
810 (VLDB_CHECK_ERROR,"Free Chain %d: Bad entry at %u: Not a valid free vlentry (0x%x)\n",
815 rindex = addr / sizeof(vlentry);
816 if (record[rindex].addr != addr && record[rindex].addr) {
818 (VLDB_CHECK_ERROR,"INTERNAL VLDB_CHECK_ERROR: addresses %u and %ld use same record slot %d\n",
819 record[rindex].addr, addr, rindex);
821 if (record[rindex].type & FRC) {
822 log_error(VLDB_CHECK_ERROR,"Free Chain: Bad entry at %u: Already in the free chain\n",
826 record[rindex].type |= FRC;
831 quiet_println("%d entries on free chain\n", count);
836 * Read each multihomed block and mark it as found in the record.
837 * Read each entry in each multihomed block and mark the serveraddrs
838 * array with the number of ip addresses found for this entry.
840 * Then read the IpMappedAddr array in the header.
841 * Verify that multihomed entries base and index are valid and points to
842 * a good multhomed entry.
843 * Mark the serveraddrs array with 1 ip address for regular entries.
845 * By the end, the severaddrs array will have a 0 if the entry has no
846 * IP addresses in it or the count of the number of IP addresses.
848 * The code does not verify if there are duplicate IP addresses in the
849 * list. The vlserver does this when a fileserver registeres itself.
852 CheckIpAddrs(struct vlheader *header)
855 afs_int32 i, j, m, rindex;
856 afs_int32 mhentries, regentries;
857 char mhblock[VL_ADDREXTBLK_SIZE];
858 struct extentaddr *MHblock = (struct extentaddr *)mhblock;
859 struct extentaddr *e;
860 int ipindex, ipaddrs;
863 memset(&nulluuid, 0, sizeof(nulluuid));
866 quiet_println("Check Multihomed blocks\n");
869 /* Read the first MH block and from it, gather the
870 * addresses of all the mh blocks.
872 readMH(header->SIT, 0, MHblock);
873 if (MHblock->ex_hdrflags != VLCONTBLOCK) {
875 (VLDB_CHECK_ERROR,"Multihomed Block 0: Bad entry at %u: Not a valid multihomed block\n",
879 for (i = 0; i < VL_MAX_ADDREXTBLKS; i++) {
880 mhinfo[i].addr = MHblock->ex_contaddrs[i];
883 if (header->SIT != mhinfo[0].addr) {
885 (VLDB_CHECK_ERROR,"MH block does not point to self %u in header, %u in block\n",
886 header->SIT, mhinfo[0].addr);
889 /* Now read each MH block and record it in the record array */
890 for (i = 0; i < VL_MAX_ADDREXTBLKS; i++) {
894 readMH(mhinfo[i].addr, i, MHblock);
895 if (MHblock->ex_hdrflags != VLCONTBLOCK) {
897 (VLDB_CHECK_ERROR,"Multihomed Block 0: Bad entry at %u: Not a valid multihomed block\n",
901 rindex = mhinfo[i].addr / sizeof(vlentry);
902 if (record[rindex].addr != mhinfo[i].addr && record[rindex].addr) {
904 (VLDB_CHECK_ERROR,"INTERNAL VLDB_CHECK_ERROR: addresses %u and %u use same record slot %d\n",
905 record[rindex].addr, mhinfo[i].addr, rindex);
907 if (record[rindex].type & FRC) {
909 (VLDB_CHECK_ERROR,"MH Blocks Chain %d: Bad entry at %ld: Already a MH block\n",
910 i, record[rindex].addr);
913 record[rindex].type |= MHC;
917 /* Read each entry in a multihomed block.
918 * Find the pointer to the entry in the IpMappedAddr array and
919 * verify that the entry is good (has IP addresses in it).
922 for (j = 1; j < VL_MHSRV_PERBLK; j++) {
923 int first_ipindex = -1;
924 e = (struct extentaddr *)&(MHblock[j]);
926 /* Search the IpMappedAddr array for all the references to this entry. */
927 /* Use the first reference for checking the ip addresses of this entry. */
928 for (ipindex = 0; ipindex <= MAXSERVERID; ipindex++) {
929 if (((header->IpMappedAddr[ipindex] & 0xff000000) == 0xff000000)
930 && (((header-> IpMappedAddr[ipindex] & 0x00ff0000) >> 16) == i)
931 && ((header->IpMappedAddr[ipindex] & 0x0000ffff) == j)) {
932 if (first_ipindex == -1) {
933 first_ipindex = ipindex;
935 serverxref[ipindex] = first_ipindex;
939 ipindex = first_ipindex;
941 serveraddrs[ipindex] = -1;
943 if (memcmp(&e->ex_hostuuid, &nulluuid, sizeof(afsUUID)) == 0) {
946 (VLDB_CHECK_ERROR,"Server Addrs index %d references null MH block %d, index %d\n",
948 serveraddrs[ipindex] = 0; /* avoids printing 2nd error below */
953 /* Step through each ip address and count the good addresses */
955 for (m = 0; m < VL_MAXIPADDRS_PERMH; m++) {
960 /* If we found any good ip addresses, mark it in the serveraddrs record */
964 mhinfo[i].orphan[j] = 1;
966 (VLDB_CHECK_ERROR,"MH block %d, index %d: Not referenced by server addrs\n",
969 serveraddrs[ipindex] = ipaddrs; /* It is good */
973 if (listservers && ipaddrs) {
974 quiet_println("MH block %d, index %d:", i, j);
975 for (m = 0; m < VL_MAXIPADDRS_PERMH; m++) {
978 quiet_println(" %d.%d.%d.%d",
979 (e->ex_addrs[m] & 0xff000000) >> 24,
980 (e->ex_addrs[m] & 0x00ff0000) >> 16,
981 (e->ex_addrs[m] & 0x0000ff00) >> 8,
982 (e->ex_addrs[m] & 0x000000ff));
988 * if (mhentries != MHblock->ex_count) {
989 * quiet_println("MH blocks says it has %d entries (found %d)\n",
990 * MHblock->ex_count, mhentries);
996 quiet_println("%d multihomed blocks\n", mhblocks);
998 /* Check the server addresses */
1000 quiet_println("Check server addresses\n");
1001 mhentries = regentries = 0;
1002 for (i = 0; i <= MAXSERVERID; i++) {
1003 if (header->IpMappedAddr[i]) {
1004 if ((header->IpMappedAddr[i] & 0xff000000) == 0xff000000) {
1006 if (((header->IpMappedAddr[i] & 0x00ff0000) >> 16) >
1009 (VLDB_CHECK_ERROR,"IP Addr for entry %d: Multihome block is bad (%d)\n",
1010 i, ((header->IpMappedAddr[i] & 0x00ff0000) >> 16));
1011 if (mhinfo[(header->IpMappedAddr[i] & 0x00ff0000) >> 16].addr == 0)
1012 log_error(VLDB_CHECK_ERROR,"IP Addr for entry %d: No such multihome block (%d)\n",
1013 i, ((header->IpMappedAddr[i] & 0x00ff0000) >> 16));
1014 if (((header->IpMappedAddr[i] & 0x0000ffff) > VL_MHSRV_PERBLK)
1015 || ((header->IpMappedAddr[i] & 0x0000ffff) < 1))
1017 (VLDB_CHECK_ERROR,"IP Addr for entry %d: Multihome index is bad (%d)\n",
1018 i, (header->IpMappedAddr[i] & 0x0000ffff));
1019 if (serveraddrs[i] == -1) {
1021 (VLDB_CHECK_WARNING,"warning: IP Addr for entry %d: Multihome entry has no ip addresses\n",
1025 if (serverxref[i] != BADSERVERID) {
1027 (VLDB_CHECK_WARNING,
1028 "warning: MH block %d, index %d is cross-linked by server numbers %d and %d.\n",
1029 (header->IpMappedAddr[i] & 0x00ff0000) >> 16,
1030 (header->IpMappedAddr[i] & 0x0000ffff),
1032 /* set addresses found/not found for this server number,
1033 * using the first index to the mh we found above. */
1034 serveraddrs[i] = serveraddrs[serverxref[i]];
1037 quiet_println(" Server ip addr %d = MH block %d, index %d\n",
1038 i, (header->IpMappedAddr[i] & 0x00ff0000) >> 16,
1039 (header->IpMappedAddr[i] & 0x0000ffff));
1043 serveraddrs[i] = 1; /* It is good */
1045 quiet_println(" Server ip addr %d = %d.%d.%d.%d\n", i,
1046 (header->IpMappedAddr[i] & 0xff000000) >> 24,
1047 (header->IpMappedAddr[i] & 0x00ff0000) >> 16,
1048 (header->IpMappedAddr[i] & 0x0000ff00) >> 8,
1049 (header->IpMappedAddr[i] & 0x000000ff));
1055 quiet_println("%d simple entries, %d multihomed entries, Total = %d\n",
1056 regentries, mhentries, mhentries + regentries);
1062 nameForAddr(afs_uint32 addr, int hashtype, afs_uint32 *hash, char *buffer)
1065 * We need to simplify the reporting, while retaining
1066 * legible messages. This is a helper function. The return address
1067 * is either a fixed char or the provided buffer - so don't use the
1068 * name after the valid lifetime of the buffer.
1071 struct nvlentry entry;
1073 /* Distinguished, invalid, hash */
1076 } else if (!validVolumeAddr(addr)) {
1077 /* Different, invalid, hash */
1081 readentry(addr, &entry, &type);
1086 if (hashtype >= MAXTYPES) {
1087 *hash = NameHash(entry.name);
1089 *hash = IdHash(entry.volumeId[hashtype]);
1091 sprintf(buffer, "for '%s'", entry.name);
1096 reportHashChanges(struct vlheader *header, afs_uint32 oldnamehash[HASHSIZE], afs_uint32 oldidhash[MAXTYPES][HASHSIZE])
1099 afs_uint32 oldhash, newhash;
1100 char oldNameBuffer[10 + VL_MAXNAMELEN];
1101 char newNameBuffer[10 + VL_MAXNAMELEN];
1102 char *oldname, *newname;
1104 * report hash changes
1107 for (i = 0; i < HASHSIZE; i++) {
1108 if (oldnamehash[i] != header->VolnameHash[i]) {
1110 oldname = nameForAddr(oldnamehash[i], MAXTYPES, &oldhash, oldNameBuffer);
1111 newname = nameForAddr(header->VolnameHash[i], MAXTYPES, &newhash, newNameBuffer);
1112 if (verbose || (oldhash != newhash)) {
1113 quiet_println("FIX: Name hash header at %d was %s, is now %s\n", i, oldname, newname);
1116 for (j = 0; j < MAXTYPES; j++) {
1117 if (oldidhash[j][i] != header->VolidHash[j][i]) {
1119 oldname = nameForAddr(oldidhash[j][i], j, &oldhash, oldNameBuffer);
1120 newname = nameForAddr(header->VolidHash[j][i], j, &newhash, newNameBuffer);
1121 if (verbose || (oldhash != newhash)) {
1122 quiet_println("FIX: %s hash header at %d was %s, is now %s\n", vtype(j), i, oldname, newname);
1130 * Remove unreferenced, duplicate multi-home address indices.
1132 * Removes entries from IpMappedAddr which where found to be
1133 * duplicates. Only entries which are not referenced by vl entries
1134 * are removed on this pass.
1136 * @param[inout] header the vldb header to be updated.
1139 removeCrossLinkedAddresses(struct vlheader *header)
1143 for (i = 0; i <= MAXSERVERID; i++) {
1144 if (serverref[i] == 0
1145 && (header->IpMappedAddr[i] & 0xff000000) == 0xff000000
1146 && serverxref[i] != BADSERVERID) {
1147 if (serverxref[i] == i) {
1148 log_error(VLDB_CHECK_ERROR,
1149 "INTERNAL VLDB_CHECK_ERROR: serverxref points to self; index %d\n",
1151 } else if (header->IpMappedAddr[serverxref[i]] == 0) {
1152 log_error(VLDB_CHECK_ERROR,
1153 "INTERNAL VLDB_CHECK_ERROR: serverxref points to empty addr; index %d, value %d\n",
1155 } else if (header->IpMappedAddr[serverxref[i]] != header->IpMappedAddr[i]) {
1156 log_error(VLDB_CHECK_ERROR,
1157 "INTERNAL VLDB_CHECK_ERROR: invalid serverxref; index %d, value %d\n",
1161 ("FIX: Removing unreferenced address index %d, which cross-links MH block %d, index %d\n",
1162 i, (header->IpMappedAddr[i] & 0x00ff0000) >> 16,
1163 (header->IpMappedAddr[i] & 0x0000ffff));
1164 header->IpMappedAddr[i] = 0;
1171 WorkerBee(struct cmd_syndesc *as, void *arock)
1175 struct vlheader header;
1176 struct nvlentry vlentry, vlentry2;
1178 afs_uint32 oldnamehash[HASHSIZE];
1179 afs_uint32 oldidhash[MAXTYPES][HASHSIZE];
1181 error_level = 0; /* start clean with no error status */
1182 dbfile = as->parms[0].items->data; /* -database */
1183 listuheader = (as->parms[1].items ? 1 : 0); /* -uheader */
1184 listheader = (as->parms[2].items ? 1 : 0); /* -vheader */
1185 listservers = (as->parms[3].items ? 1 : 0); /* -servers */
1186 listentries = (as->parms[4].items ? 1 : 0); /* -entries */
1187 verbose = (as->parms[5].items ? 1 : 0); /* -verbose */
1188 quiet = (as->parms[6].items ? 1 : 0); /* -quiet */
1189 fix = (as->parms[7].items ? 1 : 0); /* -fix */
1192 if (quiet && (verbose || listuheader || listheader ||listservers \
1194 log_error(VLDB_CHECK_FATAL," -quiet cannot be used other display flags\n");
1195 return VLDB_CHECK_FATAL;
1199 /* open the vldb database file */
1200 fd = open(dbfile, (fix > 0)?O_RDWR:O_RDONLY, 0);
1202 log_error(VLDB_CHECK_FATAL,"can't open file '%s'. error = %d\n", dbfile, errno);
1206 /* read the ubik header and the vldb database header */
1208 readheader(&header);
1209 if (header.vital_header.vldbversion < 3) {
1210 log_error(VLDB_CHECK_FATAL,"does not support vldb with version less than 3\n");
1211 return VLDB_CHECK_FATAL;
1214 maxentries = (header.vital_header.eofPtr / sizeof(vlentry)) + 1;
1215 record = calloc(maxentries, sizeof(struct er));
1216 memset(serveraddrs, 0, sizeof(serveraddrs));
1217 memset(mhinfo, 0, sizeof(mhinfo));
1218 memset(serverref, 0, sizeof(serverref));
1219 for (i = 0; i <= MAXSERVERID; i++) {
1220 serverxref[i] = BADSERVERID;
1223 /* Will fill in the record array of entries it found */
1224 ReadAllEntries(&header);
1225 listentries = 0; /* Listed all the entries */
1227 /* Check the multihomed blocks for valid entries as well as
1228 * the IpMappedAddrs array in the header for valid entries.
1230 CheckIpAddrs(&header);
1232 /* Follow the hash tables */
1233 FollowNameHash(&header);
1234 FollowIdHash(&header);
1236 /* Follow the chain of free entries */
1237 FollowFreeChain(&header);
1239 /* Now check the record we have been keeping for inconsistencies
1240 * For valid vlentries, also check that the server we point to is
1241 * valid (the serveraddrs array).
1244 quiet_println("Verify each volume entry\n");
1245 for (i = 0; i < maxentries; i++) {
1250 if (record[i].type == 0)
1253 /* If a vlentry, verify that its name is valid, its name and ids are
1254 * on the hash chains, and its server numbers are good.
1256 if (record[i].type & VL) {
1258 int foundbroken = 0;
1261 readentry(record[i].addr, &vlentry, &type);
1263 if (InvalidVolname(vlentry.name))
1264 log_error(VLDB_CHECK_ERROR,"Volume '%s' at addr %ld has an invalid name\n",
1265 vlentry.name, record[i].addr);
1267 if (!(record[i].type & NH)) {
1268 hash = NameHash(vlentry.name);
1274 if (vlentry.volumeId[0] && !(record[i].type & RWH)) {
1275 hash = IdHash(vlentry.volumeId[0]);
1277 sprintf(volidbuf, "id %u ", vlentry.volumeId[0]);
1281 if (vlentry.volumeId[1] && !(record[i].type & ROH)) {
1282 hash = IdHash(vlentry.volumeId[1]);
1284 sprintf(volidbuf, "id %u ", vlentry.volumeId[1]);
1288 if (vlentry.volumeId[2] && !(record[i].type & BKH)) {
1289 hash = IdHash(vlentry.volumeId[2]);
1291 sprintf(volidbuf, "id %u ", vlentry.volumeId[2]);
1295 if (!validVolumeAddr(vlentry.nextNameHash) ||
1296 record[ADDR(vlentry.nextNameHash)].type & MULTN) {
1297 hash = NameHash(vlentry.name);
1300 if (validVolumeAddr(vlentry.nextNameHash)) {
1301 readentry(vlentry.nextNameHash, &vlentry2, &type);
1302 nexthash = NameHash(vlentry2.name);
1304 nexthash = 0xFFFFFFFF;
1306 if (hash != nexthash)
1310 if (!validVolumeAddr(vlentry.nextIdHash[0]) ||
1311 record[ADDR(vlentry.nextIdHash[0])].type & MULTRW) {
1312 hash = IdHash(vlentry.volumeId[0]);
1314 sprintf(volidbuf, "id %u ", vlentry.volumeId[0]);
1315 if (validVolumeAddr(vlentry.nextIdHash[0])) {
1316 readentry(vlentry.nextIdHash[0], &vlentry2, &type);
1317 nexthash = IdHash(vlentry2.volumeId[0]);
1319 nexthash = 0xFFFFFFFF;
1321 if (hash != nexthash)
1325 if (!validVolumeAddr(vlentry.nextIdHash[1]) ||
1326 record[ADDR(vlentry.nextIdHash[1])].type & MULTRO) {
1327 hash = IdHash(vlentry.volumeId[1]);
1329 sprintf(volidbuf, "id %u ", vlentry.volumeId[1]);
1330 if (validVolumeAddr(vlentry.nextIdHash[1])) {
1331 readentry(vlentry.nextIdHash[1], &vlentry2, &type);
1332 nexthash = IdHash(vlentry2.volumeId[1]);
1334 nexthash = 0xFFFFFFFF;
1336 if (hash != nexthash)
1340 if (!validVolumeAddr(vlentry.nextIdHash[2]) ||
1341 record[ADDR(vlentry.nextIdHash[2])].type & MULTBK) {
1342 hash = IdHash(vlentry.volumeId[2]);
1344 sprintf(volidbuf, "id %u ", vlentry.volumeId[2]);
1345 if (validVolumeAddr(vlentry.nextIdHash[2])) {
1346 readentry(vlentry.nextIdHash[2], &vlentry2, &type);
1347 nexthash = IdHash(vlentry2.volumeId[2]);
1349 nexthash = 0xFFFFFFFF;
1351 if (hash != nexthash)
1356 log_error(VLDB_CHECK_ERROR, "%d: Volume '%s' %s forward link in %s hash chain is broken (hash %d != %d)\n", i,
1357 vlentry.name, volidbuf, which, hash, nexthash);
1358 } else if (foundbad) {
1359 log_error(VLDB_CHECK_ERROR, "%d: Volume '%s' %snot found in %s hash %d\n", i,
1360 vlentry.name, volidbuf, which, hash);
1363 for (j = 0; j < NMAXNSERVERS; j++) {
1364 if (vlentry.serverNumber[j] != BADSERVERID) {
1365 serverref[vlentry.serverNumber[j]] = 1;
1366 if (serveraddrs[vlentry.serverNumber[j]] == 0) {
1368 (VLDB_CHECK_ERROR,"Volume '%s', index %d points to empty server entry %d\n",
1369 vlentry.name, j, vlentry.serverNumber[j]);
1370 } else if (serverxref[vlentry.serverNumber[j]] != BADSERVERID) {
1372 (VLDB_CHECK_ERROR,"Volume '%s', index %d points to server entry %d, which is cross-linked by %d\n",
1373 vlentry.name, j, vlentry.serverNumber[j], serverxref[vlentry.serverNumber[j]]);
1378 if (record[i].type & 0xffff0f00)
1380 (VLDB_CHECK_ERROR,"Volume '%s' id %u also found on other chains (0x%x)\n",
1381 vlentry.name, vlentry.volumeId[0], record[i].type);
1384 } else if (record[i].type & FR) {
1385 if (!(record[i].type & FRC))
1386 log_error(VLDB_CHECK_ERROR,"Free vlentry at %ld not on free chain\n",
1389 if (record[i].type & 0xfffffdf0)
1391 (VLDB_CHECK_ERROR,"Free vlentry at %ld also found on other chains (0x%x)\n",
1392 record[i].addr, record[i].type);
1394 /* A multihomed entry */
1395 } else if (record[i].type & MH) {
1396 if (!(record[i].type & MHC))
1397 log_error(VLDB_CHECK_ERROR,"Multihomed block at %ld is orphaned\n",
1400 if (record[i].type & 0xfffffef0)
1402 (VLDB_CHECK_ERROR,"Multihomed block at %ld also found on other chains (0x%x)\n",
1403 record[i].addr, record[i].type);
1406 log_error(VLDB_CHECK_ERROR,"Unknown entry type at %u (0x%x)\n", record[i].addr,
1413 * If we are fixing we will rebuild all the hash lists from the ground up
1415 memcpy(oldnamehash, header.VolnameHash, sizeof(oldnamehash));
1416 memset(header.VolnameHash, 0, sizeof(header.VolnameHash));
1418 memcpy(oldidhash, header.VolidHash, sizeof(oldidhash));
1419 memset(header.VolidHash, 0, sizeof(header.VolidHash));
1420 quiet_println("Rebuilding %u entries\n", maxentries);
1422 quiet_println("Scanning %u entries for possible repairs\n", maxentries);
1424 for (i = 0; i < maxentries; i++) {
1426 if (record[i].type & VL) {
1427 readentry(record[i].addr, &vlentry, &type);
1428 if (!(record[i].type & REFN)) {
1429 log_error(VLDB_CHECK_ERROR,"%d: Record %ld (type 0x%x) not in a name chain\n", i,
1430 record[i].addr, record[i].type);
1432 if (vlentry.volumeId[0] && !(record[i].type & REFRW)) {
1433 log_error(VLDB_CHECK_ERROR,"%d: Record %ld (type 0x%x) not in a RW chain\n", i,
1434 record[i].addr, record[i].type);
1436 if (vlentry.volumeId[1] && !(record[i].type & REFRO)) {
1437 log_error(VLDB_CHECK_ERROR,"%d: Record %ld (type 0x%x) not in a RO chain\n", i,
1438 record[i].addr, record[i].type);
1440 if (vlentry.volumeId[2] && !(record[i].type & REFBK)) {
1441 log_error(VLDB_CHECK_ERROR,"%d: Record %ld (type 0x%x) not in a BK chain\n", i,
1442 record[i].addr, record[i].type);
1445 afs_uint32 oldhash, newhash;
1446 char oldNameBuffer[10 + VL_MAXNAMELEN];
1447 char newNameBuffer[10 + VL_MAXNAMELEN];
1448 char *oldname, *newname;
1451 * Put the current hash table contexts into our 'next'
1452 * and our address into the hash table.
1454 hash = NameHash(vlentry.name);
1456 if (vlentry.nextNameHash != header.VolnameHash[hash]) {
1457 oldname = nameForAddr(vlentry.nextNameHash, MAXTYPES, &oldhash, oldNameBuffer);
1458 newname = nameForAddr(header.VolnameHash[hash], MAXTYPES, &newhash, newNameBuffer);
1459 if (verbose || ((oldhash != newhash) &&
1460 (0 != vlentry.nextNameHash) &&
1461 (0 != header.VolnameHash[hash]))) {
1463 * That is, only report if we are verbose
1464 * or the hash is changing (and one side wasn't NULL
1466 quiet_println("FIX: Name hash link for '%s' was %s, is now %s\n",
1467 vlentry.name, oldname, newname);
1471 vlentry.nextNameHash = header.VolnameHash[hash];
1472 header.VolnameHash[hash] = record[i].addr;
1474 for (j = 0; j < MAXTYPES; j++) {
1476 if (0 == vlentry.volumeId[j]) {
1478 * No volume of that type. Continue
1482 hash = IdHash(vlentry.volumeId[j]);
1484 if (vlentry.nextIdHash[j] != header.VolidHash[j][hash]) {
1485 oldname = nameForAddr(vlentry.nextIdHash[j], j, &oldhash, oldNameBuffer);
1486 newname = nameForAddr(header.VolidHash[j][hash], j, &newhash, newNameBuffer);
1487 if (verbose || ((oldhash != newhash) &&
1488 (0 != vlentry.nextIdHash[j]) &&
1489 (0 != header.VolidHash[j][hash]))) {
1490 quiet_println("FIX: %s hash link for '%s' was %s, is now %s\n",
1491 vtype(j), vlentry.name, oldname, newname);
1495 /* Consolidate server numbers which point to the same mh entry.
1496 * The serverref flags are not reset here, since we want to make
1497 * sure the data is actually written before the server number is
1498 * considered unreferenced. */
1499 for (k = 0; k < NMAXNSERVERS; k++) {
1500 if (vlentry.serverNumber[k] != BADSERVERID
1501 && serverxref[vlentry.serverNumber[k]] != BADSERVERID) {
1502 u_char oldsn = vlentry.serverNumber[k];
1503 u_char newsn = serverxref[oldsn];
1504 if (newsn == oldsn) {
1505 log_error(VLDB_CHECK_ERROR,
1506 "INTERNAL VLDB_CHECK_ERROR: serverxref points to self; index %d\n",
1508 } else if (header.IpMappedAddr[oldsn] == 0) {
1509 log_error(VLDB_CHECK_ERROR,
1510 "INTERNAL VLDB_CHECK_ERROR: serverxref; points to empty address; index %d, value %d\n",
1512 } else if (header.IpMappedAddr[newsn] != header.IpMappedAddr[oldsn]) {
1513 log_error(VLDB_CHECK_ERROR,
1514 "INTERNAL VLDB_CHECK_ERROR: invalid serverxref; index %d\n",
1518 ("FIX: Volume '%s', index %d, server number was %d, is now %d\n",
1519 vlentry.name, k, oldsn, newsn);
1520 vlentry.serverNumber[k] = newsn;
1525 vlentry.nextIdHash[j] = header.VolidHash[j][hash];
1526 header.VolidHash[j][hash] = record[i].addr;
1528 writeentry(record[i].addr, &vlentry);
1531 else if (record[i].type & MH) {
1533 char mhblock[VL_ADDREXTBLK_SIZE];
1534 struct extentaddr *MHblock = (struct extentaddr *)mhblock;
1537 for (block = 0; block < VL_MAX_ADDREXTBLKS; block++) {
1538 if (mhinfo[block].addr == record[i].addr)
1541 if (block == VL_MAX_ADDREXTBLKS) {
1542 continue; /* skip orphaned extent block */
1544 readMH(record[i].addr, block, MHblock);
1545 for (index = 0; index < VL_MHSRV_PERBLK; index++) {
1546 if (mhinfo[block].orphan[index]) {
1547 quiet_println("FIX: Removing unreferenced mh entry; block %d, index %d\n",
1549 memset(&(MHblock[index]), 0, sizeof(struct extentaddr));
1552 writeMH(record[i].addr, block, MHblock);
1557 reportHashChanges(&header, oldnamehash, oldidhash);
1558 removeCrossLinkedAddresses(&header);
1559 writeheader(&header);
1568 main(int argc, char **argv)
1570 struct cmd_syndesc *ts;
1574 ts = cmd_CreateSyntax(NULL, WorkerBee, NULL, "vldb check");
1575 cmd_AddParm(ts, "-database", CMD_SINGLE, CMD_REQUIRED, "vldb_file");
1576 cmd_AddParm(ts, "-uheader", CMD_FLAG, CMD_OPTIONAL,
1577 "Display UBIK header");
1578 cmd_AddParm(ts, "-vheader", CMD_FLAG, CMD_OPTIONAL,
1579 "Display VLDB header");
1580 cmd_AddParm(ts, "-servers", CMD_FLAG, CMD_OPTIONAL,
1581 "Display server list");
1582 cmd_AddParm(ts, "-entries", CMD_FLAG, CMD_OPTIONAL, "Display entries");
1583 cmd_AddParm(ts, "-verbose", CMD_FLAG, CMD_OPTIONAL, "verbose");
1584 cmd_AddParm(ts, "-quiet", CMD_FLAG, CMD_OPTIONAL, "quiet");
1585 cmd_AddParm(ts, "-fix", CMD_FLAG, CMD_OPTIONAL, "attempt to patch the database (potentially dangerous)");
1587 return cmd_Dispatch(argc, argv);