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>
26 osi_rwlock_t cm_volumeLock;
29 cm_ValidateVolume(void)
34 for (volp = cm_data.allVolumesp, count = 0; volp; volp=volp->allNextp, count++) {
36 if ( volp < (cm_volume_t *)cm_data.volumeBaseAddress ||
37 volp >= (cm_volume_t *)cm_data.cellBaseAddress) {
38 afsi_log("cm_ValidateVolume failure: out of range cm_volume_t pointers");
39 fprintf(stderr, "cm_ValidateVolume failure: out of range cm_volume_t pointers\n");
43 if ( volp->magic != CM_VOLUME_MAGIC ) {
44 afsi_log("cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC");
45 fprintf(stderr, "cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC\n");
49 if ( volp->cellp < (cm_cell_t *)cm_data.cellBaseAddress ||
50 volp->cellp >= (cm_cell_t *)cm_data.aclBaseAddress) {
51 afsi_log("cm_ValidateVolume failure: out of range cm_cell_t pointers");
52 fprintf(stderr, "cm_ValidateVolume failure: out of range cm_cell_t pointers\n");
56 if ( volp->cellp && volp->cellp->magic != CM_CELL_MAGIC ) {
57 afsi_log("cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC");
58 fprintf(stderr, "cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC\n");
62 if ( volp->allNextp) {
63 if ( volp->allNextp < (cm_volume_t *)cm_data.volumeBaseAddress ||
64 volp->allNextp >= (cm_volume_t *)cm_data.cellBaseAddress) {
65 afsi_log("cm_ValidateVolume failure: out of range cm_volume_t pointers");
66 fprintf(stderr, "cm_ValidateVolume failure: out of range cm_volume_t pointers\n");
70 if ( volp->allNextp->magic != CM_VOLUME_MAGIC ) {
71 afsi_log("cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC");
72 fprintf(stderr, "cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC\n");
77 if ( count != 0 && volp == cm_data.allVolumesp ||
78 count > cm_data.maxVolumes ) {
79 afsi_log("cm_ValidateVolume failure: cm_data.allVolumep loop detected");
80 fprintf(stderr, "cm_ValidateVolume failure: cm_data.allVolumep loop detected\n");
85 if ( count != cm_data.currentVolumes ) {
86 afsi_log("cm_ValidateVolume failure: count != cm_data.currentVolumes");
87 fprintf(stderr, "cm_ValidateVolume failure: count != cm_data.currentVolumes\n");
95 cm_ShutdownVolume(void)
99 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
101 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
102 if (volp->vol[volType].ID)
103 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
105 volp->cbExpiresRO = 0;
106 volp->cbIssuedRO = 0;
107 volp->cbServerpRO = NULL;
108 volp->volumeSizeRO = 0;
109 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_RO_SIZE_VALID);
111 lock_FinalizeRWLock(&volp->rw);
117 void cm_InitVolume(int newFile, long maxVols)
119 static osi_once_t once;
121 if (osi_Once(&once)) {
122 lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock", LOCK_HIERARCHY_VOLUME_GLOBAL);
125 cm_data.allVolumesp = NULL;
126 cm_data.currentVolumes = 0;
127 cm_data.maxVolumes = maxVols;
128 memset(cm_data.volumeNameHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
129 memset(cm_data.volumeRWIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
130 memset(cm_data.volumeROIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
131 memset(cm_data.volumeBKIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
132 cm_data.volumeLRUFirstp = cm_data.volumeLRULastp = NULL;
136 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
139 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
140 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
141 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_UPDATING_VL);
142 volp->lastUpdateTime = 0;
143 for (volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
144 volp->vol[volType].state = vl_unknown;
145 volp->vol[volType].serversp = NULL;
146 if (volp->vol[volType].ID)
147 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, vl_unknown, volp->vol[volType].state);
149 volp->cbExpiresRO = 0;
150 volp->cbIssuedRO = 0;
151 volp->cbServerpRO = NULL;
152 volp->volumeSizeRO = 0;
153 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_RO_SIZE_VALID);
161 /* returns true if the id is a decimal integer, in which case we interpret it
162 * as an id. make the cache manager much simpler.
163 * Stolen from src/volser/vlprocs.c */
165 cm_VolNameIsID(char *aname)
168 while (tc = *aname++) {
169 if (tc > '9' || tc < '0')
177 * Update a volume. Caller holds a write lock on the volume (volp->rw).
180 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
181 * Yes, we support multihomed fileservers.
182 * Since before we got the code from IBM.
183 * But to find out about multiple addresses on a multihomed server, you need
184 * to use VL_GetEntryByNameU and VL_GetAddrsU. If you use
185 * VL_GetEntryByNameO or VL_GetEntryByNameN, the vlserver just gives you one
186 * address per server.
187 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:39 (JHutz)
188 * see src/afs/afs_volume.c, paying particular attention to
189 * afs_NewVolumeByName, afs_SetupVolume, and InstallUVolumeEntry
190 * shadow / openafs / jaltman {ANDREW.CMU.EDU} 01:40 (Jeffrey Altman)
191 * thanks. The windows client calls the 0 versions.
192 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:51 (JHutz)
194 * By not using the N versions, you only get up to 8 sites instead of 13.
195 * By not using the U versions, you don't get to know about multihomed serve
196 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:52 (JHutz)
197 * Of course, you probably want to support the older versions for backward
198 * compatibility. If you do that, you need to call the newest interface
199 * first, and fall back to successively older versions if you get
203 cm_GetEntryByName( struct cm_cell *cellp, const char *name,
204 struct vldbentry *vldbEntryp,
205 struct nvldbentry *nvldbEntryp,
206 struct uvldbentry *uvldbEntryp,
214 struct rx_connection * rxconnp;
216 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
217 osi_LogSaveString(afsd_logp,cellp->name),
218 osi_LogSaveString(afsd_logp,name));
221 code = cm_ConnByMServers(cellp->vlServersp, FALSE, userp, reqp, &connp);
225 rxconnp = cm_GetRxConn(connp);
226 code = VL_GetEntryByNameU(rxconnp, name, uvldbEntryp);
228 if ( code == RXGEN_OPCODE )
230 code = VL_GetEntryByNameN(rxconnp, name, nvldbEntryp);
233 if ( code == RXGEN_OPCODE ) {
234 code = VL_GetEntryByNameO(rxconnp, name, vldbEntryp);
237 rx_PutConnection(rxconnp);
238 } while (cm_Analyze(connp, userp, reqp, NULL, cellp, 0, NULL, NULL, &cellp->vlServersp, NULL, code));
239 code = cm_MapVLRPCError(code, reqp);
241 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
242 osi_LogSaveString(afsd_logp,cellp->name),
243 osi_LogSaveString(afsd_logp,name), code);
245 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
246 osi_LogSaveString(afsd_logp,cellp->name),
247 osi_LogSaveString(afsd_logp,name));
252 cm_GetEntryByID( struct cm_cell *cellp, afs_uint32 id,
253 struct vldbentry *vldbEntryp,
254 struct nvldbentry *nvldbEntryp,
255 struct uvldbentry *uvldbEntryp,
263 StringCbPrintf(name, sizeof(name), "%u", id);
265 return cm_GetEntryByName(cellp, name, vldbEntryp, nvldbEntryp, uvldbEntryp, methodp, userp, reqp);
268 long cm_UpdateVolumeLocation(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
271 struct rx_connection *rxconnp;
275 cm_serverRef_t *tsrp;
277 struct sockaddr_in tsockAddr;
280 struct vldbentry vldbEntry;
281 struct nvldbentry nvldbEntry;
282 struct uvldbentry uvldbEntry;
287 enum volstatus rwNewstate = vl_online;
288 enum volstatus roNewstate = vl_online;
289 enum volstatus bkNewstate = vl_online;
290 #ifdef AFS_FREELANCE_CLIENT
296 lock_AssertWrite(&volp->rw);
299 * If the last volume update was in the last five
300 * minutes and it did not exist, then avoid the RPC
301 * and return No Such Volume immediately.
304 if ((volp->flags & CM_VOLUMEFLAG_NOEXIST) &&
305 (now < volp->lastUpdateTime + 600))
307 return CM_ERROR_NOSUCHVOLUME;
310 #ifdef AFS_FREELANCE_CLIENT
311 if (cellp->cellID == AFS_FAKE_ROOT_CELL_ID)
314 memset(&vldbEntry, 0, sizeof(vldbEntry));
315 vldbEntry.flags |= VLF_RWEXISTS;
316 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
322 while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
323 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation sleeping name %s:%s flags 0x%x",
324 volp->cellp->name, volp->namep, volp->flags);
325 osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
326 lock_ObtainWrite(&volp->rw);
327 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation awake name %s:%s flags 0x%x",
328 volp->cellp->name, volp->namep, volp->flags);
329 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
330 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation nothing to do, waking others name %s:%s flags 0x%x",
331 volp->cellp->name, volp->namep, volp->flags);
332 osi_Wakeup((LONG_PTR) &volp->flags);
338 /* Do not query again if the last update attempt failed in the last 60 seconds */
339 if ((volp->flags & CM_VOLUMEFLAG_RESET) && (volp->lastUpdateTime > now - 60))
341 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation unsuccessful update in last 60 seconds -- name %s:%s flags 0x%x",
342 volp->cellp->name, volp->namep, volp->flags);
343 return(CM_ERROR_ALLDOWN);
346 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_UPDATING_VL);
348 /* Do not hold the volume lock across the RPC calls */
349 lock_ReleaseWrite(&volp->rw);
351 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
352 cm_UpdateCell(cellp, 0);
354 /* now we have volume structure locked and held; make RPC to fill it */
355 code = cm_GetEntryByName(cellp, volp->namep, &vldbEntry, &nvldbEntry,
357 &method, userp, reqp);
359 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
360 * does not exist and is not a numeric string but there might exist a .readonly volume.
361 * If the base name doesn't exist we will not care about the .backup that might be left
362 * behind since there should be no method to access it.
364 if (code == CM_ERROR_NOSUCHVOLUME &&
365 _atoi64(volp->namep) == 0 &&
366 volp->vol[RWVOL].ID == 0 &&
367 strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
368 char name[VL_MAXNAMELEN];
370 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
372 /* now we have volume structure locked and held; make RPC to fill it */
373 code = cm_GetEntryByName(cellp, name, &vldbEntry, &nvldbEntry,
375 &method, userp, reqp);
379 * What if there was a volume rename? The volume name no longer exists but the
380 * volume id might. Try to refresh the volume location information based one
381 * of the readwrite or readonly volume id.
383 if (code == CM_ERROR_NOSUCHVOLUME) {
384 if (volp->vol[RWVOL].ID != 0) {
385 code = cm_GetEntryByID(cellp, volp->vol[RWVOL].ID, &vldbEntry, &nvldbEntry,
387 &method, userp, reqp);
388 } else if (volp->vol[ROVOL].ID != 0) {
389 code = cm_GetEntryByID(cellp, volp->vol[ROVOL].ID, &vldbEntry, &nvldbEntry,
391 &method, userp, reqp);
394 lock_ObtainWrite(&volp->rw);
403 afs_int32 serverNumber[NMAXNSERVERS];
404 afs_int32 serverFlags[NMAXNSERVERS];
405 afsUUID serverUUID[NMAXNSERVERS];
406 afs_int32 rwServers_alldown = 1;
407 afs_int32 roServers_alldown = 1;
408 afs_int32 bkServers_alldown = 1;
409 char name[VL_MAXNAMELEN];
411 #ifdef AFS_FREELANCE_CLIENT
413 rwServers_alldown = 0;
416 /* clear out old bindings */
417 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
418 if (volp->vol[volType].serversp)
419 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
422 memset(serverUUID, 0, sizeof(serverUUID));
426 flags = vldbEntry.flags;
427 nServers = vldbEntry.nServers;
428 rwID = vldbEntry.volumeId[0];
429 roID = vldbEntry.volumeId[1];
430 bkID = vldbEntry.volumeId[2];
431 for ( i=0; i<nServers; i++ ) {
432 serverFlags[i] = vldbEntry.serverFlags[i];
433 serverNumber[i] = vldbEntry.serverNumber[i];
435 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
436 name[VL_MAXNAMELEN - 1] = '\0';
439 flags = nvldbEntry.flags;
440 nServers = nvldbEntry.nServers;
441 rwID = nvldbEntry.volumeId[0];
442 roID = nvldbEntry.volumeId[1];
443 bkID = nvldbEntry.volumeId[2];
444 for ( i=0; i<nServers; i++ ) {
445 serverFlags[i] = nvldbEntry.serverFlags[i];
446 serverNumber[i] = nvldbEntry.serverNumber[i];
448 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
449 name[VL_MAXNAMELEN - 1] = '\0';
452 flags = uvldbEntry.flags;
453 nServers = uvldbEntry.nServers;
454 rwID = uvldbEntry.volumeId[0];
455 roID = uvldbEntry.volumeId[1];
456 bkID = uvldbEntry.volumeId[2];
457 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
458 if ( !(uvldbEntry.serverFlags[i] & VLSF_UUID) ) {
459 serverFlags[j] = uvldbEntry.serverFlags[i];
460 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
463 afs_uint32 * addrp, nentries, code, unique;
465 ListAddrByAttributes attrs;
468 memset(&attrs, 0, sizeof(attrs));
469 attrs.Mask = VLADDR_UUID;
470 attrs.uuid = uvldbEntry.serverNumber[i];
471 memset(&uuid, 0, sizeof(uuid));
472 memset(&addrs, 0, sizeof(addrs));
475 code = cm_ConnByMServers(cellp->vlServersp, FALSE, userp, reqp, &connp);
479 rxconnp = cm_GetRxConn(connp);
480 code = VL_GetAddrsU(rxconnp, &attrs, &uuid, &unique, &nentries, &addrs);
481 rx_PutConnection(rxconnp);
482 } while (cm_Analyze(connp, userp, reqp, NULL, cellp, 0, NULL, NULL, &cellp->vlServersp, NULL, code));
485 code = cm_MapVLRPCError(code, reqp);
486 osi_Log2(afsd_logp, "CALL VL_GetAddrsU serverNumber %u FAILURE, code 0x%x",
490 osi_Log1(afsd_logp, "CALL VL_GetAddrsU serverNumber %u SUCCESS", i);
492 addrp = addrs.bulkaddrs_val;
493 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
494 serverFlags[j] = uvldbEntry.serverFlags[i];
495 serverNumber[j] = addrp[k];
496 serverUUID[j] = uuid;
499 xdr_free((xdrproc_t) xdr_bulkaddrs, &addrs);
502 code = CM_ERROR_INVAL;
505 nServers = j; /* update the server count */
506 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
507 name[VL_MAXNAMELEN - 1] = '\0';
511 /* decode the response */
512 lock_ObtainWrite(&cm_volumeLock);
513 if (!cm_VolNameIsID(volp->namep)) {
518 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
519 name[len - 7] = '\0';
520 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
521 name[len - 9] = '\0';
524 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
525 osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
527 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
528 cm_RemoveVolumeFromNameHashTable(volp);
530 strcpy(volp->namep, name);
532 cm_AddVolumeToNameHashTable(volp);
535 if (flags & VLF_DFSFILESET) {
536 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_DFS_VOLUME);
537 osi_Log1(afsd_logp, "cm_UpdateVolume Volume Group '%s' is a DFS File Set. Correct behavior is not implemented.",
538 osi_LogSaveString(afsd_logp, volp->namep));
541 if (flags & VLF_RWEXISTS) {
542 if (volp->vol[RWVOL].ID != rwID) {
543 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
544 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
545 volp->vol[RWVOL].ID = rwID;
546 cm_AddVolumeToIDHashTable(volp, RWVOL);
549 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
550 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
551 volp->vol[RWVOL].ID = 0;
553 if (flags & VLF_ROEXISTS) {
554 if (volp->vol[ROVOL].ID != roID) {
555 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
556 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
557 volp->vol[ROVOL].ID = roID;
558 cm_AddVolumeToIDHashTable(volp, ROVOL);
561 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
562 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
563 volp->vol[ROVOL].ID = 0;
565 if (flags & VLF_BACKEXISTS) {
566 if (volp->vol[BACKVOL].ID != bkID) {
567 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
568 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
569 volp->vol[BACKVOL].ID = bkID;
570 cm_AddVolumeToIDHashTable(volp, BACKVOL);
573 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
574 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
575 volp->vol[BACKVOL].ID = 0;
577 lock_ReleaseWrite(&cm_volumeLock);
579 /* See if the replica sites are mixed versions */
580 for (i=0; i<nServers; i++) {
581 if (serverFlags[i] & VLSF_NEWREPSITE) {
587 for (i=0; i<nServers; i++) {
588 /* create a server entry */
589 tflags = serverFlags[i];
590 if (tflags & VLSF_DONTUSE)
592 tsockAddr.sin_port = htons(7000);
593 tsockAddr.sin_family = AF_INET;
594 tempAddr = htonl(serverNumber[i]);
595 tsockAddr.sin_addr.s_addr = tempAddr;
596 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE, FALSE);
597 if (tsp && (method == 2) && (tsp->flags & CM_SERVERFLAG_UUID)) {
599 * Check to see if the uuid of the server we know at this address
600 * matches the uuid of the server we are being told about by the
601 * vlserver. If not, ...?
603 if (!afs_uuid_equal(&serverUUID[i], &tsp->uuid)) {
604 char uuid1[128], uuid2[128];
607 afsUUID_to_string(&serverUUID[i], uuid1, sizeof(uuid1));
608 afsUUID_to_string(&tsp->uuid, uuid2, sizeof(uuid2));
609 afs_inet_ntoa_r(serverNumber[i], hoststr);
611 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation UUIDs do not match! %s != %s (%s)",
612 osi_LogSaveString(afsd_logp, uuid1),
613 osi_LogSaveString(afsd_logp, uuid2),
614 osi_LogSaveString(afsd_logp, hoststr));
619 * cm_NewServer will probe the file server which in turn will
620 * update the state on the volume group object. Do not probe
621 * in this thread. It will block the thread and can result in
622 * a recursive call to cm_UpdateVolumeLocation().
624 lock_ReleaseWrite(&volp->rw);
625 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, &serverUUID[i], CM_FLAG_NOPROBE);
626 lock_ObtainWrite(&volp->rw);
628 osi_assertx(tsp != NULL, "null cm_server_t");
631 * if this server was created by fs setserverprefs
632 * then it won't have either a cell assignment or
637 if ( (method == 2) && !(tsp->flags & CM_SERVERFLAG_UUID) &&
638 !afs_uuid_is_nil(&serverUUID[i])) {
639 tsp->uuid = serverUUID[i];
640 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_UUID);
643 /* and add it to the list(s). */
645 * Each call to cm_NewServerRef() increments the
646 * ref count of tsp. These reference will be dropped,
647 * if and when the volume is reset; see reset code
648 * earlier in this function.
650 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
651 tsrp = cm_NewServerRef(tsp, rwID);
652 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
653 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
654 rwServers_alldown = 0;
657 * If there are mixed versions of RO releases on the replica
658 * sites, skip the servers with the out of date versions.
660 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS) &&
661 (!isMixed || (tflags & VLSF_NEWREPSITE))) {
662 tsrp = cm_NewServerRef(tsp, roID);
663 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
666 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
667 roServers_alldown = 0;
669 /* We don't use VLSF_BACKVOL !?! */
670 /* Because only the backup on the server holding the RW
671 * volume can be valid. This check prevents errors if a
672 * RW is moved but the old backup is not removed.
674 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
675 tsrp = cm_NewServerRef(tsp, bkID);
676 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
678 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
679 bkServers_alldown = 0;
681 /* Drop the reference obtained by cm_FindServer() */
688 * If the first n servers have the same rank, then we
689 * randomly pick one among them and move it to the beginning.
690 * We don't bother to re-order the whole list because
691 * the rest of the list is used only if the first server is
692 * down. We only do this for the RO list; we assume the other
693 * lists are length 1.
696 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
697 _InterlockedOr(&volp->vol[ROVOL].flags, CM_VOL_STATE_FLAG_REPLICATED);
700 _InterlockedAnd(&volp->vol[ROVOL].flags, ~CM_VOL_STATE_FLAG_REPLICATED);
703 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
704 roNewstate = roServers_alldown ? vl_alldown : vl_online;
705 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
707 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_NOEXIST);
708 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
709 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_NOEXIST);
711 rwNewstate = roNewstate = bkNewstate = vl_alldown;
714 * we are updating lastUpdateTime but didn't get an answer
715 * so clear the no exist flag.
717 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_NOEXIST);
720 if (volp->vol[RWVOL].state != rwNewstate) {
721 if (volp->vol[RWVOL].ID)
722 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
723 volp->vol[RWVOL].state = rwNewstate;
725 if (volp->vol[ROVOL].state != roNewstate) {
726 if (volp->vol[ROVOL].ID)
727 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
728 volp->vol[ROVOL].state = roNewstate;
730 if (volp->vol[BACKVOL].state != bkNewstate) {
731 if (volp->vol[BACKVOL].ID)
732 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
733 volp->vol[BACKVOL].state = bkNewstate;
736 volp->lastUpdateTime = time(NULL);
738 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RO_MIXED);
740 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_RO_MIXED);
743 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_RESET);
745 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_UPDATING_VL);
746 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
747 osi_LogSaveString(afsd_logp,volp->cellp->name),
748 osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
749 osi_Wakeup((LONG_PTR) &volp->flags);
754 /* Requires read or write lock on cm_volumeLock */
755 void cm_GetVolume(cm_volume_t *volp)
757 InterlockedIncrement(&volp->refCount);
760 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
765 lock_ObtainRead(&cm_volumeLock);
766 hash = CM_VOLUME_ID_HASH(fidp->volume);
767 /* The volumeID can be any one of the three types. So we must
768 * search the hash table for all three types until we find it.
769 * We will search in the order of RO, RW, BK.
771 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
772 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
777 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
778 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
784 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
785 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
790 /* hold the volume if we found it */
794 lock_ReleaseRead(&cm_volumeLock);
798 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
799 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
802 #ifdef SEARCH_ALL_VOLUMES
805 char volNameString[VL_MAXNAMELEN];
809 lock_ObtainRead(&cm_volumeLock);
810 #ifdef SEARCH_ALL_VOLUMES
811 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
812 if (cellp == volp->cellp &&
813 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
814 (unsigned) volumeID == volp->vol[ROVOL].ID ||
815 (unsigned) volumeID == volp->vol[BACKVOL].ID))
820 #endif /* SEARCH_ALL_VOLUMES */
822 hash = CM_VOLUME_ID_HASH(volumeID);
823 /* The volumeID can be any one of the three types. So we must
824 * search the hash table for all three types until we find it.
825 * We will search in the order of RO, RW, BK.
827 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
828 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
833 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
834 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
840 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
841 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
846 #ifdef SEARCH_ALL_VOLUMES
847 osi_assertx(volp == volp2, "unexpected cm_vol_t");
850 /* hold the volume if we found it */
854 lock_ReleaseRead(&cm_volumeLock);
858 lock_ObtainWrite(&volp->rw);
861 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
862 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
864 lock_ReleaseWrite(&volp->rw);
868 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
869 lock_ObtainWrite(&cm_volumeLock);
870 cm_AdjustVolumeLRU(volp);
871 lock_ReleaseWrite(&cm_volumeLock);
874 lock_ObtainRead(&cm_volumeLock);
876 lock_ReleaseRead(&cm_volumeLock);
881 /* otherwise, we didn't find it so consult the VLDB */
882 sprintf(volNameString, "%u", volumeID);
883 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
884 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
886 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
887 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
888 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
891 code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp,
892 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
899 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
900 struct cm_user *userp, struct cm_req *reqp,
901 afs_uint32 flags, cm_volume_t **outVolpp)
904 #ifdef SEARCH_ALL_VOLUMES
908 char name[VL_MAXNAMELEN];
913 strncpy(name, volumeNamep, VL_MAXNAMELEN);
914 name[VL_MAXNAMELEN-1] = '\0';
917 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
919 name[len - 7] = '\0';
920 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
922 name[len - 9] = '\0';
927 lock_ObtainRead(&cm_volumeLock);
928 #ifdef SEARCH_ALL_VOLUMES
929 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
930 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
935 #endif /* SEARCH_ALL_VOLUMES */
937 hash = CM_VOLUME_NAME_HASH(name);
938 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
939 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
943 #ifdef SEARCH_ALL_VOLUMES
944 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
947 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
949 /* otherwise, get from VLDB */
952 * Change to a write lock so that we have exclusive use of
953 * the first cm_volume_t with a refCount of 0 so that we
954 * have time to increment it.
956 lock_ConvertRToW(&cm_volumeLock);
959 * While the lock was converted it may have been dropped
960 * Search again now that we are exclusive.
962 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
963 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
969 lock_ReleaseWrite(&cm_volumeLock);
970 lock_ObtainWrite(&volp->rw);
972 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
973 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
974 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
975 if ( volp->refCount == 0 ) {
976 /* There is one we can re-use */
981 for ( volp = cm_data.volumeLRULastp;
983 volp = (cm_volume_t *) osi_QPrev(&volp->q))
985 if ( volp->refCount == 0 ) {
986 /* There is one we can re-use */
992 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
994 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
995 volp->cellp->name, volp->namep);
997 /* The volp is removed from the LRU queue in order to
998 * prevent two threads from attempting to recycle the
999 * same object. This volp must be re-inserted back into
1000 * the LRU queue before this function exits.
1002 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1003 cm_RemoveVolumeFromLRU(volp);
1004 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
1005 cm_RemoveVolumeFromNameHashTable(volp);
1007 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1008 if (volp->vol[volType].qflags & CM_VOLUME_QFLAG_IN_HASH)
1009 cm_RemoveVolumeFromIDHashTable(volp, volType);
1010 if (volp->vol[volType].ID)
1011 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
1012 volp->vol[volType].ID = 0;
1013 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
1016 volp = &cm_data.volumeBaseAddress[InterlockedIncrement(&cm_data.currentVolumes) - 1];
1017 memset(volp, 0, sizeof(cm_volume_t));
1018 volp->magic = CM_VOLUME_MAGIC;
1019 volp->allNextp = cm_data.allVolumesp;
1020 cm_data.allVolumesp = volp;
1021 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
1024 * no one else can find this object and we have not dropped
1025 * cm_volumeLock in any case. The object is either new or
1026 * recycled. Initialize its new values and put it into the
1027 * name hash table before dropping cm_volumeLock which makes
1028 * it visible to competing threads.
1030 volp->cellp = cellp;
1031 strncpy(volp->namep, name, VL_MAXNAMELEN);
1032 volp->namep[VL_MAXNAMELEN-1] = '\0';
1033 volp->flags = CM_VOLUMEFLAG_RESET;
1034 volp->lastUpdateTime = 0;
1036 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1037 volp->vol[volType].state = vl_unknown;
1038 volp->vol[volType].nextp = NULL;
1039 volp->vol[volType].flags = 0;
1041 volp->cbExpiresRO = 0;
1042 volp->cbIssuedRO = 0;
1043 volp->cbServerpRO = NULL;
1044 volp->creationDateRO = 0;
1045 cm_AddVolumeToNameHashTable(volp);
1047 lock_ReleaseWrite(&cm_volumeLock);
1048 lock_ObtainWrite(&volp->rw);
1049 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1050 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
1056 lock_ReleaseRead(&cm_volumeLock);
1057 lock_ObtainWrite(&volp->rw);
1059 lock_ReleaseRead(&cm_volumeLock);
1060 return CM_ERROR_NOSUCHVOLUME;
1063 /* if we get here we are holding the mutex */
1064 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
1065 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1067 lock_ReleaseWrite(&volp->rw);
1069 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
1070 type == ROVOL && volp->vol[ROVOL].ID == 0))
1071 code = CM_ERROR_NOSUCHVOLUME;
1076 lock_ObtainWrite(&cm_volumeLock);
1077 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
1078 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
1079 cm_AdjustVolumeLRU(volp);
1080 lock_ReleaseWrite(&cm_volumeLock);
1083 * do not return it to the caller but do insert it in the LRU
1084 * otherwise it will be lost
1086 lock_ObtainWrite(&cm_volumeLock);
1087 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
1088 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
1089 cm_AdjustVolumeLRU(volp);
1091 lock_ReleaseWrite(&cm_volumeLock);
1094 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
1095 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
1096 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
1099 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
1100 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
1107 * Only call this function in response to a VNOVOL or VMOVED error
1108 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
1109 * as that can lead to recursive calls.
1111 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
1115 #ifdef SEARCH_ALL_VOLUMES
1122 return CM_ERROR_INVAL;
1124 cellp = cm_FindCellByID(fidp->cell, 0);
1126 return CM_ERROR_NOSUCHCELL;
1128 /* search for the volume */
1129 lock_ObtainRead(&cm_volumeLock);
1130 #ifdef SEARCH_ALL_VOLUMES
1131 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1132 if (cellp == volp->cellp &&
1133 (fidp->volume == volp->vol[RWVOL].ID ||
1134 fidp->volume == volp->vol[ROVOL].ID ||
1135 fidp->volume == volp->vol[BACKVOL].ID))
1138 #endif /* SEARCH_ALL_VOLUMES */
1140 hash = CM_VOLUME_ID_HASH(fidp->volume);
1141 /* The volumeID can be any one of the three types. So we must
1142 * search the hash table for all three types until we find it.
1143 * We will search in the order of RO, RW, BK.
1145 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
1146 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
1150 /* try RW volumes */
1151 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
1152 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
1157 /* try BK volumes */
1158 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
1159 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1164 #ifdef SEARCH_ALL_VOLUMES
1165 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1167 /* hold the volume if we found it */
1171 lock_ReleaseRead(&cm_volumeLock);
1174 return CM_ERROR_NOSUCHVOLUME;
1177 cm_data.mountRootGen = time(NULL);
1178 lock_ObtainWrite(&volp->rw);
1179 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1180 volp->lastUpdateTime = 0;
1182 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1183 lock_ReleaseWrite(&volp->rw);
1185 lock_ObtainRead(&cm_volumeLock);
1187 lock_ReleaseRead(&cm_volumeLock);
1192 /* find the appropriate servers from a volume */
1193 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volid, cm_user_t *userp, cm_req_t *reqp, afs_uint32 *replicated)
1195 cm_serverRef_t **serverspp;
1196 cm_serverRef_t *current;
1198 cm_vol_state_t *volstatep = NULL;
1201 volstatep = cm_VolumeStateByID(volp, volid);
1203 lock_ObtainWrite(&cm_serverLock);
1206 *replicated = (volstatep->flags & CM_VOL_STATE_FLAG_REPLICATED);
1207 serverspp = &volstatep->serversp;
1209 lock_ReleaseWrite(&cm_serverLock);
1213 lock_ObtainWrite(&volp->rw);
1214 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1215 volp->lastUpdateTime = 0;
1216 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1217 lock_ReleaseWrite(&volp->rw);
1225 * Increment the refCount on deleted items as well.
1226 * They will be freed by cm_FreeServerList when they get to zero
1228 for (current = *serverspp; current; current = current->next)
1229 cm_GetServerRef(current, TRUE);
1231 lock_ReleaseWrite(&cm_serverLock);
1236 void cm_PutVolume(cm_volume_t *volp)
1238 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1239 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1242 /* return the read-only volume, if there is one, or the read-write volume if
1245 long cm_GetROVolumeID(cm_volume_t *volp)
1249 lock_ObtainRead(&volp->rw);
1250 if (volp->vol[ROVOL].ID && !cm_IsServerListEmpty(volp->vol[ROVOL].serversp))
1251 id = volp->vol[ROVOL].ID;
1253 id = volp->vol[RWVOL].ID;
1254 lock_ReleaseRead(&volp->rw);
1259 void cm_RefreshVolumes(int lifetime)
1267 /* force mount point target updates */
1268 if (cm_data.mountRootGen + lifetime <= now)
1269 cm_data.mountRootGen = now;
1272 * force a re-loading of volume data from the vldb
1273 * if the lifetime for the cached data has expired
1275 lock_ObtainRead(&cm_volumeLock);
1276 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1278 lock_ReleaseRead(&cm_volumeLock);
1280 if (!(volp->flags & CM_VOLUMEFLAG_RESET) ||
1281 (volp->flags & CM_VOLUMEFLAG_NOEXIST)) {
1282 lock_ObtainWrite(&volp->rw);
1283 if (volp->flags & CM_VOLUMEFLAG_NOEXIST) {
1284 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_NOEXIST);
1287 if (volp->flags & CM_VOLUMEFLAG_RO_MIXED) {
1288 if (volp->lastUpdateTime + 300 <= now) {
1289 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1290 volp->lastUpdateTime = 0;
1293 if (volp->lastUpdateTime + lifetime <= now) {
1294 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1295 volp->lastUpdateTime = 0;
1298 lock_ReleaseWrite(&volp->rw);
1301 lock_ObtainRead(&cm_volumeLock);
1304 lock_ReleaseRead(&cm_volumeLock);
1308 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1309 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1313 AFSFetchVolumeStatus volStat;
1318 struct rx_connection * rxconnp;
1321 char offLineMsg[256];
1323 long alldown, alldeleted;
1324 cm_serverRef_t *serversp;
1326 cm_scache_t *vscp = NULL;
1329 OfflineMsg = offLineMsg;
1332 volType = cm_VolumeType(volp, volID);
1334 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1335 /* create fid for volume root so that VNOVOL and VMOVED errors can be processed */
1336 cm_SetFid(&vfid, volp->cellp->cellID, statep->ID, 1, 1);
1338 if (!statep->serversp && !(*volumeUpdatedp)) {
1340 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1341 *volumeUpdatedp = 1;
1344 lock_ObtainRead(&cm_serverLock);
1345 if (statep->serversp) {
1348 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1349 if (serversp->status == srv_deleted)
1354 if (!(serversp->server->flags & CM_SERVERFLAG_DOWN))
1357 if (serversp->status == srv_busy || serversp->status == srv_offline)
1358 serversp->status = srv_not_busy;
1360 lock_ReleaseRead(&cm_serverLock);
1362 if (alldeleted && !(*volumeUpdatedp)) {
1364 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1365 *volumeUpdatedp = 1;
1368 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1369 (!alldown && statep->state == vl_alldown)) {
1371 req.flags |= CM_REQ_OFFLINE_VOL_CHK;
1372 lock_ReleaseWrite(&volp->rw);
1374 code = cm_GetSCache(&vfid, NULL, &vscp, cm_rootUserp, &req);
1376 lock_ObtainWrite(&vscp->rw);
1377 code = cm_SyncOp(vscp, NULL, cm_rootUserp, &req, PRSFS_READ,
1378 CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
1379 lock_ReleaseWrite(&vscp->rw);
1382 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1386 rxconnp = cm_GetRxConn(connp);
1387 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1388 &volStat, &Name, &OfflineMsg, &MOTD);
1389 rx_PutConnection(rxconnp);
1390 } while (cm_Analyze(connp, cm_rootUserp, &req, &vfid, NULL, 0, NULL, NULL, NULL, NULL, code));
1391 code = cm_MapRPCError(code, &req);
1393 if (code == 0 && volType == ROVOL)
1396 lock_ObtainWrite(&volp->rw);
1397 volp->volumeSizeRO = volStat.BlocksInUse * 1024;
1398 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RO_SIZE_VALID);
1399 lock_ReleaseWrite(&volp->rw);
1403 lock_ObtainWrite(&vscp->rw);
1404 cm_SyncOpDone(vscp, NULL, CM_SCACHESYNC_NEEDCALLBACK | CM_SCACHESYNC_GETSTATUS);
1405 lock_ReleaseWrite(&vscp->rw);
1406 cm_ReleaseSCache(vscp);
1408 lock_ObtainWrite(&volp->rw);
1409 if (code == 0 && volStat.Online) {
1410 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1411 statep->state = vl_online;
1413 } else if (code == CM_ERROR_NOACCESS) {
1414 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1415 statep->state = vl_unknown;
1418 } else if (alldown && statep->state != vl_alldown) {
1419 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1420 statep->state = vl_alldown;
1423 lock_ReleaseRead(&cm_serverLock);
1424 if (statep->state != vl_alldown) {
1425 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1426 statep->state = vl_alldown;
1432 /* The return code is 0 if the volume is not online and
1433 * 1 if the volume is online
1436 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1440 afs_uint32 online = 0;
1441 afs_uint32 volumeUpdated = 0;
1443 lock_ObtainWrite(&volp->rw);
1445 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1447 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1451 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1452 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1453 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1455 lock_ReleaseWrite(&volp->rw);
1461 * called from the Daemon thread.
1462 * when checking the offline status, check those of the most recently used volumes first.
1464 void cm_CheckOfflineVolumes(void)
1468 extern int daemon_ShutdownFlag;
1469 extern int powerStateSuspended;
1471 lock_ObtainRead(&cm_volumeLock);
1472 for (volp = cm_data.volumeLRULastp;
1473 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1474 volp=(cm_volume_t *) osi_QPrev(&volp->q)) {
1476 * Skip volume entries that did not exist last time
1477 * the vldb was queried. For those entries wait until
1478 * the next actual request is received for the volume
1479 * before checking its state.
1481 if ((volp->qflags & CM_VOLUME_QFLAG_IN_HASH) &&
1482 !(volp->flags & CM_VOLUMEFLAG_NOEXIST)) {
1484 lock_ReleaseRead(&cm_volumeLock);
1485 cm_CheckOfflineVolume(volp, 0);
1486 lock_ObtainRead(&cm_volumeLock);
1490 lock_ReleaseRead(&cm_volumeLock);
1495 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1497 enum volstatus newStatus;
1498 cm_serverRef_t *tsrp;
1500 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1503 if (!volp || !statep) {
1510 lock_ObtainWrite(&cm_serverLock);
1511 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1513 sprintf(addr, "%d.%d.%d.%d",
1514 ((tsp->addr.sin_addr.s_addr & 0xff)),
1515 ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
1516 ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
1517 ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
1519 if (tsrp->status == srv_deleted) {
1520 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
1521 statep->ID, osi_LogSaveString(afsd_logp,addr));
1525 cm_GetServerNoLock(tsp);
1526 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1528 if (tsrp->status == srv_busy) {
1529 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
1530 statep->ID, osi_LogSaveString(afsd_logp,addr));
1533 } else if (tsrp->status == srv_offline) {
1534 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
1535 statep->ID, osi_LogSaveString(afsd_logp,addr));
1539 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1540 statep->ID, osi_LogSaveString(afsd_logp,addr));
1545 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s down",
1546 statep->ID, osi_LogSaveString(afsd_logp,addr));
1548 cm_PutServerNoLock(tsp);
1551 lock_ReleaseWrite(&cm_serverLock);
1553 osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
1554 allDown, allBusy, someBusy, someOffline, allOffline);
1557 newStatus = vl_alldown;
1558 else if (allBusy || (someBusy && someOffline))
1559 newStatus = vl_busy;
1560 else if (allOffline)
1561 newStatus = vl_offline;
1563 newStatus = vl_online;
1565 if (statep->ID && statep->state != newStatus)
1566 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1568 statep->state = newStatus;
1572 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1575 if (volp->vol[RWVOL].ID == volID) {
1576 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1577 } else if (volp->vol[ROVOL].ID == volID) {
1578 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1579 } else if (volp->vol[BACKVOL].ID == volID) {
1580 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1583 * If we are called with volID == 0 then something has gone wrong.
1584 * Most likely a race occurred in the server volume list maintenance.
1585 * Since we don't know which volume's status should be updated,
1586 * just update all of them that are known to exist. Better to be
1587 * correct than fast.
1590 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1591 if (volp->vol[volType].ID != 0)
1592 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1598 ** Finds all volumes that reside on this server and reorders their
1599 ** RO list according to the changed rank of server.
1601 void cm_ChangeRankVolume(cm_server_t *tsp)
1607 /* find volumes which might have RO copy on server*/
1608 lock_ObtainRead(&cm_volumeLock);
1609 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1611 code = 1 ; /* assume that list is unchanged */
1613 lock_ReleaseRead(&cm_volumeLock);
1614 lock_ObtainWrite(&volp->rw);
1616 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1617 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1619 /* this volume list was changed */
1621 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1623 lock_ReleaseWrite(&volp->rw);
1624 lock_ObtainRead(&cm_volumeLock);
1627 lock_ReleaseRead(&cm_volumeLock);
1630 /* dump all volumes that have reference count > 0 to a file.
1631 * cookie is used to identify this batch for easy parsing,
1632 * and it a string provided by a caller
1634 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1641 lock_ObtainRead(&cm_scacheLock);
1642 lock_ObtainRead(&cm_volumeLock);
1645 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n",
1646 cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1647 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1649 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1652 char *srvStr = NULL;
1653 afs_uint32 srvStrRpc = TRUE;
1657 if (volp->cbServerpRO) {
1658 if (!((volp->cbServerpRO->flags & CM_SERVERFLAG_UUID) &&
1659 UuidToString((UUID *)&volp->cbServerpRO->uuid, &srvStr) == RPC_S_OK)) {
1660 srvStr = malloc(16);
1662 afs_inet_ntoa_r(volp->cbServerpRO->addr.sin_addr.s_addr, srvStr);
1666 if (volp->cbExpiresRO) {
1667 t = volp->cbExpiresRO;
1671 cbt[strlen(cbt)-1] = '\0';
1674 if (volp->creationDateRO) {
1675 t = volp->creationDateRO;
1678 cdrot = strdup(cdrot);
1679 cdrot[strlen(cdrot)-1] = '\0';
1684 "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x:%x "
1685 "cbServerpRO='%s' cbExpiresRO='%s' creationDateRO='%s' refCount=%u\r\n",
1686 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID,
1687 volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags, volp->qflags,
1688 srvStr ? srvStr : "<none>", cbt ? cbt : "<none>", cdrot ? cdrot : "<none>",
1690 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1694 RpcStringFree(&srvStr);
1703 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1704 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1707 lock_ReleaseRead(&cm_volumeLock);
1708 lock_ReleaseRead(&cm_scacheLock);
1715 * String hash function used by SDBM project.
1716 * It was chosen because it is fast and provides
1719 afs_uint32 SDBMHash(const char * str)
1721 afs_uint32 hash = 0;
1727 for(i = 0, len = strlen(str); i < len; i++)
1729 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1732 return (hash & 0x7FFFFFFF);
1735 /* call with volume write-locked and mutex held */
1736 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1740 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
1743 i = CM_VOLUME_NAME_HASH(volp->namep);
1745 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1746 cm_data.volumeNameHashTablep[i] = volp;
1747 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_HASH);
1750 /* call with volume write-locked and mutex held */
1751 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1753 cm_volume_t **lvolpp;
1757 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1758 /* hash it out first */
1759 i = CM_VOLUME_NAME_HASH(volp->namep);
1760 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1762 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1763 if (tvolp == volp) {
1764 *lvolpp = volp->nameNextp;
1765 _InterlockedAnd(&volp->qflags, ~CM_VOLUME_QFLAG_IN_HASH);
1766 volp->nameNextp = NULL;
1773 /* call with volume write-locked and mutex held */
1774 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1777 struct cm_vol_state * statep;
1779 statep = cm_VolumeStateByType(volp, volType);
1781 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH)
1784 i = CM_VOLUME_ID_HASH(statep->ID);
1788 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1789 cm_data.volumeRWIDHashTablep[i] = volp;
1792 statep->nextp = cm_data.volumeROIDHashTablep[i];
1793 cm_data.volumeROIDHashTablep[i] = volp;
1796 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1797 cm_data.volumeBKIDHashTablep[i] = volp;
1800 _InterlockedOr(&statep->qflags, CM_VOLUME_QFLAG_IN_HASH);
1804 /* call with volume write-locked and mutex held */
1805 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1807 cm_volume_t **lvolpp;
1809 struct cm_vol_state * statep;
1812 statep = cm_VolumeStateByType(volp, volType);
1814 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1815 /* hash it out first */
1816 i = CM_VOLUME_ID_HASH(statep->ID);
1820 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1821 tvolp = cm_data.volumeRWIDHashTablep[i];
1824 lvolpp = &cm_data.volumeROIDHashTablep[i];
1825 tvolp = cm_data.volumeROIDHashTablep[i];
1828 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1829 tvolp = cm_data.volumeBKIDHashTablep[i];
1832 osi_assertx(0, "invalid volume type");
1835 if (tvolp == volp) {
1836 *lvolpp = statep->nextp;
1837 _InterlockedAnd(&statep->qflags, ~CM_VOLUME_QFLAG_IN_HASH);
1838 statep->nextp = NULL;
1842 lvolpp = &tvolp->vol[volType].nextp;
1843 tvolp = tvolp->vol[volType].nextp;
1848 /* must be called with cm_volumeLock write-locked! */
1849 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1851 lock_AssertWrite(&cm_volumeLock);
1853 if (volp == cm_data.volumeLRUFirstp)
1856 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1857 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1858 osi_QAddH((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1859 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1861 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1864 /* must be called with cm_volumeLock write-locked! */
1865 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1867 lock_AssertWrite(&cm_volumeLock);
1869 if (volp == cm_data.volumeLRULastp)
1872 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1873 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1874 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1875 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1877 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1880 /* must be called with cm_volumeLock write-locked! */
1881 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1883 lock_AssertWrite(&cm_volumeLock);
1885 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) {
1886 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1887 _InterlockedAnd(&volp->qflags, ~CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1890 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1893 static char * volstatus_str(enum volstatus vs)
1909 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1911 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1914 if (volID == volp->vol[RWVOL].ID)
1916 else if (volID == volp->vol[ROVOL].ID)
1918 else if (volID == volp->vol[BACKVOL].ID)
1922 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1924 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1925 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1927 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1930 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1932 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1934 return statep->state;
1939 /* Renew .readonly volume callbacks that are more than
1940 * 30 minutes old. (A volume callback is issued for 2 hours.)
1943 cm_VolumeRenewROCallbacks(void)
1946 time_t minexp = time(NULL) + 90 * 60;
1947 extern int daemon_ShutdownFlag;
1948 extern int powerStateSuspended;
1950 lock_ObtainRead(&cm_volumeLock);
1951 for (volp = cm_data.allVolumesp;
1952 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1953 volp=volp->allNextp) {
1954 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1959 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1963 lock_ReleaseRead(&cm_volumeLock);
1964 if (cm_GetSCache(&fid, NULL, &scp, cm_rootUserp, &req) == 0) {
1965 lock_ObtainWrite(&scp->rw);
1966 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1967 lock_ReleaseWrite(&scp->rw);
1968 cm_ReleaseSCache(scp);
1970 lock_ObtainRead(&cm_volumeLock);
1973 lock_ReleaseRead(&cm_volumeLock);
1977 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1979 return &volp->vol[volType];
1983 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1985 cm_vol_state_t * statep = NULL;
1987 if (id == volp->vol[RWVOL].ID)
1988 statep = &volp->vol[RWVOL];
1989 else if (id == volp->vol[ROVOL].ID)
1990 statep = &volp->vol[ROVOL];
1991 else if (id == volp->vol[BACKVOL].ID)
1992 statep = &volp->vol[BACKVOL];
1998 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
2000 size_t len = strlen(volname);
2001 cm_vol_state_t *statep;
2003 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
2004 statep = &volp->vol[ROVOL];
2005 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
2006 statep = &volp->vol[BACKVOL];
2008 statep = &volp->vol[RWVOL];
2014 cm_VolumeType(cm_volume_t *volp, afs_uint32 id)
2016 if (id == volp->vol[RWVOL].ID)
2018 else if (id == volp->vol[ROVOL].ID)
2020 else if (id == volp->vol[BACKVOL].ID)
2027 cm_ChecksumVolumeServerList(struct cm_fid *fidp, cm_user_t *userp, cm_req_t *reqp)
2031 afs_uint32 replicated;
2032 cm_serverRef_t **serverspp;
2034 code = cm_GetServerList(fidp, userp, reqp, &replicated, &serverspp);
2036 cksum = cm_ChecksumServerList(*serverspp);
2037 cm_FreeServerList(serverspp, 0);
2043 cm_IsVolumeReplicated(cm_fid_t *fidp)
2045 afs_int32 replicated = 0;
2047 cm_vol_state_t * volstatep;
2049 volp = cm_GetVolumeByFID(fidp);
2051 volstatep = cm_VolumeStateByID(volp, fidp->volume);
2052 replicated = (volstatep->flags & CM_VOL_STATE_FLAG_REPLICATED);