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>
23 #include "cm_getaddrs.h"
27 osi_rwlock_t cm_volumeLock;
30 cm_ValidateVolume(void)
35 for (volp = cm_data.allVolumesp, count = 0; volp; volp=volp->allNextp, count++) {
37 if ( volp < (cm_volume_t *)cm_data.volumeBaseAddress ||
38 volp >= (cm_volume_t *)cm_data.cellBaseAddress) {
39 afsi_log("cm_ValidateVolume failure: out of range cm_volume_t pointers");
40 fprintf(stderr, "cm_ValidateVolume failure: out of range cm_volume_t pointers\n");
44 if ( volp->magic != CM_VOLUME_MAGIC ) {
45 afsi_log("cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC");
46 fprintf(stderr, "cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC\n");
50 if ( volp->cellp < (cm_cell_t *)cm_data.cellBaseAddress ||
51 volp->cellp >= (cm_cell_t *)cm_data.aclBaseAddress) {
52 afsi_log("cm_ValidateVolume failure: out of range cm_cell_t pointers");
53 fprintf(stderr, "cm_ValidateVolume failure: out of range cm_cell_t pointers\n");
57 if ( volp->cellp && volp->cellp->magic != CM_CELL_MAGIC ) {
58 afsi_log("cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC");
59 fprintf(stderr, "cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC\n");
63 if ( volp->allNextp) {
64 if ( volp->allNextp < (cm_volume_t *)cm_data.volumeBaseAddress ||
65 volp->allNextp >= (cm_volume_t *)cm_data.cellBaseAddress) {
66 afsi_log("cm_ValidateVolume failure: out of range cm_volume_t pointers");
67 fprintf(stderr, "cm_ValidateVolume failure: out of range cm_volume_t pointers\n");
71 if ( volp->allNextp->magic != CM_VOLUME_MAGIC ) {
72 afsi_log("cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC");
73 fprintf(stderr, "cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC\n");
78 if ( count != 0 && volp == cm_data.allVolumesp ||
79 count > cm_data.maxVolumes ) {
80 afsi_log("cm_ValidateVolume failure: cm_data.allVolumep loop detected");
81 fprintf(stderr, "cm_ValidateVolume failure: cm_data.allVolumep loop detected\n");
86 if ( count != cm_data.currentVolumes ) {
87 afsi_log("cm_ValidateVolume failure: count != cm_data.currentVolumes");
88 fprintf(stderr, "cm_ValidateVolume failure: count != cm_data.currentVolumes\n");
96 cm_ShutdownVolume(void)
100 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
102 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
103 if (volp->vol[volType].ID)
104 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
106 volp->cbExpiresRO = 0;
107 volp->cbIssuedRO = 0;
108 volp->cbServerpRO = NULL;
109 volp->volumeSizeRO = 0;
110 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_RO_SIZE_VALID);
112 lock_FinalizeRWLock(&volp->rw);
115 cm_getaddrsShutdown();
120 void cm_InitVolume(int newFile, long maxVols)
122 static osi_once_t once;
124 if (osi_Once(&once)) {
125 lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock", LOCK_HIERARCHY_VOLUME_GLOBAL);
128 cm_data.allVolumesp = NULL;
129 cm_data.currentVolumes = 0;
130 cm_data.maxVolumes = maxVols;
131 memset(cm_data.volumeNameHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
132 memset(cm_data.volumeRWIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
133 memset(cm_data.volumeROIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
134 memset(cm_data.volumeBKIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
135 cm_data.volumeLRUFirstp = cm_data.volumeLRULastp = NULL;
139 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
142 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
143 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
144 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_UPDATING_VL);
145 volp->lastUpdateTime = 0;
146 for (volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
147 volp->vol[volType].state = vl_unknown;
148 volp->vol[volType].serversp = NULL;
149 if (volp->vol[volType].ID)
150 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, vl_unknown, volp->vol[volType].state);
152 volp->cbExpiresRO = 0;
153 volp->cbIssuedRO = 0;
154 volp->cbServerpRO = NULL;
155 volp->volumeSizeRO = 0;
156 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_RO_SIZE_VALID);
167 /* returns true if the id is a decimal integer, in which case we interpret it
168 * as an id. make the cache manager much simpler.
169 * Stolen from src/volser/vlprocs.c */
171 cm_VolNameIsID(char *aname)
174 while (tc = *aname++) {
175 if (tc > '9' || tc < '0')
183 * Update a volume. Caller holds a write lock on the volume (volp->rw).
186 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
187 * Yes, we support multihomed fileservers.
188 * Since before we got the code from IBM.
189 * But to find out about multiple addresses on a multihomed server, you need
190 * to use VL_GetEntryByNameU and VL_GetAddrsU. If you use
191 * VL_GetEntryByNameO or VL_GetEntryByNameN, the vlserver just gives you one
192 * address per server.
193 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:39 (JHutz)
194 * see src/afs/afs_volume.c, paying particular attention to
195 * afs_NewVolumeByName, afs_SetupVolume, and InstallUVolumeEntry
196 * shadow / openafs / jaltman {ANDREW.CMU.EDU} 01:40 (Jeffrey Altman)
197 * thanks. The windows client calls the 0 versions.
198 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:51 (JHutz)
200 * By not using the N versions, you only get up to 8 sites instead of 13.
201 * By not using the U versions, you don't get to know about multihomed serve
202 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:52 (JHutz)
203 * Of course, you probably want to support the older versions for backward
204 * compatibility. If you do that, you need to call the newest interface
205 * first, and fall back to successively older versions if you get
209 cm_GetEntryByName( struct cm_cell *cellp, const char *name,
210 struct vldbentry *vldbEntryp,
211 struct nvldbentry *nvldbEntryp,
212 struct uvldbentry *uvldbEntryp,
220 struct rx_connection * rxconnp;
222 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
223 osi_LogSaveString(afsd_logp,cellp->name),
224 osi_LogSaveString(afsd_logp,name));
227 code = cm_ConnByMServers(cellp->vlServersp, FALSE, userp, reqp, &connp);
231 rxconnp = cm_GetRxConn(connp);
232 code = VL_GetEntryByNameU(rxconnp, name, uvldbEntryp);
234 if ( code == RXGEN_OPCODE )
236 code = VL_GetEntryByNameN(rxconnp, name, nvldbEntryp);
239 if ( code == RXGEN_OPCODE ) {
240 code = VL_GetEntryByNameO(rxconnp, name, vldbEntryp);
243 rx_PutConnection(rxconnp);
244 } while (cm_Analyze(connp, userp, reqp, NULL, cellp, 0, NULL, NULL, &cellp->vlServersp, NULL, code));
245 code = cm_MapVLRPCError(code, reqp);
247 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
248 osi_LogSaveString(afsd_logp,cellp->name),
249 osi_LogSaveString(afsd_logp,name), code);
251 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
252 osi_LogSaveString(afsd_logp,cellp->name),
253 osi_LogSaveString(afsd_logp,name));
258 cm_GetEntryByID( struct cm_cell *cellp, afs_uint32 id,
259 struct vldbentry *vldbEntryp,
260 struct nvldbentry *nvldbEntryp,
261 struct uvldbentry *uvldbEntryp,
269 StringCbPrintf(name, sizeof(name), "%u", id);
271 return cm_GetEntryByName(cellp, name, vldbEntryp, nvldbEntryp, uvldbEntryp, methodp, userp, reqp);
274 long cm_UpdateVolumeLocation(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
279 cm_serverRef_t *tsrp;
281 struct sockaddr_in tsockAddr;
284 struct vldbentry vldbEntry;
285 struct nvldbentry nvldbEntry;
286 struct uvldbentry uvldbEntry;
291 enum volstatus rwNewstate = vl_online;
292 enum volstatus roNewstate = vl_online;
293 enum volstatus bkNewstate = vl_online;
294 #ifdef AFS_FREELANCE_CLIENT
300 lock_AssertWrite(&volp->rw);
303 * If the last volume update was in the last five
304 * minutes and it did not exist, then avoid the RPC
305 * and return No Such Volume immediately.
308 if ((volp->flags & CM_VOLUMEFLAG_NOEXIST) &&
309 (now < volp->lastUpdateTime + 600))
311 return CM_ERROR_NOSUCHVOLUME;
314 #ifdef AFS_FREELANCE_CLIENT
315 if (cellp->cellID == AFS_FAKE_ROOT_CELL_ID)
318 memset(&vldbEntry, 0, sizeof(vldbEntry));
319 vldbEntry.flags |= VLF_RWEXISTS;
320 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
326 while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
327 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation sleeping name %s:%s flags 0x%x",
328 volp->cellp->name, volp->namep, volp->flags);
329 osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
330 lock_ObtainWrite(&volp->rw);
331 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation awake name %s:%s flags 0x%x",
332 volp->cellp->name, volp->namep, volp->flags);
333 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
334 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation nothing to do, waking others name %s:%s flags 0x%x",
335 volp->cellp->name, volp->namep, volp->flags);
336 osi_Wakeup((LONG_PTR) &volp->flags);
342 /* Do not query again if the last update attempt failed in the last 60 seconds */
343 if ((volp->flags & CM_VOLUMEFLAG_RESET) && (volp->lastUpdateTime > now - 60))
345 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation unsuccessful update in last 60 seconds -- name %s:%s flags 0x%x",
346 volp->cellp->name, volp->namep, volp->flags);
347 return(CM_ERROR_ALLDOWN);
350 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_UPDATING_VL);
352 /* Do not hold the volume lock across the RPC calls */
353 lock_ReleaseWrite(&volp->rw);
355 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
356 cm_UpdateCell(cellp, 0);
358 /* now we have volume structure locked and held; make RPC to fill it */
359 code = cm_GetEntryByName(cellp, volp->namep, &vldbEntry, &nvldbEntry,
361 &method, userp, reqp);
363 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
364 * does not exist and is not a numeric string but there might exist a .readonly volume.
365 * If the base name doesn't exist we will not care about the .backup that might be left
366 * behind since there should be no method to access it.
368 if (code == CM_ERROR_NOSUCHVOLUME &&
369 _atoi64(volp->namep) == 0 &&
370 volp->vol[RWVOL].ID == 0 &&
371 strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
372 char name[VL_MAXNAMELEN];
374 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
376 /* now we have volume structure locked and held; make RPC to fill it */
377 code = cm_GetEntryByName(cellp, name, &vldbEntry, &nvldbEntry,
379 &method, userp, reqp);
383 * What if there was a volume rename? The volume name no longer exists but the
384 * volume id might. Try to refresh the volume location information based one
385 * of the readwrite or readonly volume id.
387 if (code == CM_ERROR_NOSUCHVOLUME) {
388 if (volp->vol[RWVOL].ID != 0) {
389 code = cm_GetEntryByID(cellp, volp->vol[RWVOL].ID, &vldbEntry, &nvldbEntry,
391 &method, userp, reqp);
392 } else if (volp->vol[ROVOL].ID != 0) {
393 code = cm_GetEntryByID(cellp, volp->vol[ROVOL].ID, &vldbEntry, &nvldbEntry,
395 &method, userp, reqp);
398 lock_ObtainWrite(&volp->rw);
407 afs_int32 serverNumber[NMAXNSERVERS];
408 afs_int32 serverUnique[NMAXNSERVERS];
409 afs_int32 serverFlags[NMAXNSERVERS];
410 afsUUID serverUUID[NMAXNSERVERS];
411 afs_int32 rwServers_alldown = 1;
412 afs_int32 roServers_alldown = 1;
413 afs_int32 bkServers_alldown = 1;
414 char name[VL_MAXNAMELEN];
416 #ifdef AFS_FREELANCE_CLIENT
418 rwServers_alldown = 0;
421 /* clear out old bindings */
422 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
423 if (volp->vol[volType].serversp)
424 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
427 memset(serverUUID, 0, sizeof(serverUUID));
428 memset(serverUnique, 0, sizeof(serverUnique));
432 flags = vldbEntry.flags;
433 nServers = vldbEntry.nServers;
434 rwID = vldbEntry.volumeId[0];
435 roID = vldbEntry.volumeId[1];
436 bkID = vldbEntry.volumeId[2];
437 for ( i=0; i<nServers; i++ ) {
438 serverFlags[i] = vldbEntry.serverFlags[i];
439 serverNumber[i] = vldbEntry.serverNumber[i];
441 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
442 name[VL_MAXNAMELEN - 1] = '\0';
445 flags = nvldbEntry.flags;
446 nServers = nvldbEntry.nServers;
447 rwID = nvldbEntry.volumeId[0];
448 roID = nvldbEntry.volumeId[1];
449 bkID = nvldbEntry.volumeId[2];
450 for ( i=0; i<nServers; i++ ) {
451 serverFlags[i] = nvldbEntry.serverFlags[i];
452 serverNumber[i] = nvldbEntry.serverNumber[i];
454 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
455 name[VL_MAXNAMELEN - 1] = '\0';
458 flags = uvldbEntry.flags;
459 nServers = uvldbEntry.nServers;
460 rwID = uvldbEntry.volumeId[0];
461 roID = uvldbEntry.volumeId[1];
462 bkID = uvldbEntry.volumeId[2];
463 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
464 if ( !(uvldbEntry.serverFlags[i] & VLSF_UUID) ) {
465 serverFlags[j] = uvldbEntry.serverFlags[i];
466 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
469 code = cm_GetAddrsU(cellp, userp, reqp,
470 &uvldbEntry.serverNumber[i],
471 uvldbEntry.serverUnique[i],
472 uvldbEntry.serverFlags[i], &j,
473 serverFlags, serverNumber,
474 serverUUID, serverUnique);
475 if (code == CM_ERROR_RETRY)
479 nServers = j; /* update the server count */
480 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
481 name[VL_MAXNAMELEN - 1] = '\0';
485 /* decode the response */
486 lock_ObtainWrite(&cm_volumeLock);
487 if (!cm_VolNameIsID(volp->namep)) {
492 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
493 name[len - 7] = '\0';
494 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
495 name[len - 9] = '\0';
498 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
499 osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
501 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
502 cm_RemoveVolumeFromNameHashTable(volp);
504 strcpy(volp->namep, name);
506 cm_AddVolumeToNameHashTable(volp);
509 if (flags & VLF_DFSFILESET) {
510 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_DFS_VOLUME);
511 osi_Log1(afsd_logp, "cm_UpdateVolume Volume Group '%s' is a DFS File Set. Correct behavior is not implemented.",
512 osi_LogSaveString(afsd_logp, volp->namep));
515 if (flags & VLF_RWEXISTS) {
516 if (volp->vol[RWVOL].ID != rwID) {
517 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
518 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
519 volp->vol[RWVOL].ID = rwID;
520 cm_AddVolumeToIDHashTable(volp, RWVOL);
523 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
524 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
525 volp->vol[RWVOL].ID = 0;
527 if (flags & VLF_ROEXISTS) {
528 if (volp->vol[ROVOL].ID != roID) {
529 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
530 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
531 volp->vol[ROVOL].ID = roID;
532 cm_AddVolumeToIDHashTable(volp, ROVOL);
535 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
536 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
537 volp->vol[ROVOL].ID = 0;
539 if (flags & VLF_BACKEXISTS) {
540 if (volp->vol[BACKVOL].ID != bkID) {
541 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
542 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
543 volp->vol[BACKVOL].ID = bkID;
544 cm_AddVolumeToIDHashTable(volp, BACKVOL);
547 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
548 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
549 volp->vol[BACKVOL].ID = 0;
551 lock_ReleaseWrite(&cm_volumeLock);
553 /* See if the replica sites are mixed versions */
554 for (i=0; i<nServers; i++) {
555 if (serverFlags[i] & VLSF_NEWREPSITE) {
561 for (i=0; i<nServers; i++) {
562 /* create a server entry */
563 tflags = serverFlags[i];
564 if (tflags & VLSF_DONTUSE)
566 tsockAddr.sin_port = htons(7000);
567 tsockAddr.sin_family = AF_INET;
568 tempAddr = htonl(serverNumber[i]);
569 tsockAddr.sin_addr.s_addr = tempAddr;
570 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE, FALSE);
571 if (tsp && (method == 2) && (tsp->flags & CM_SERVERFLAG_UUID)) {
573 * Check to see if the uuid of the server we know at this address
574 * matches the uuid of the server we are being told about by the
575 * vlserver. If not, ...?
577 if (!afs_uuid_equal(&serverUUID[i], &tsp->uuid)) {
578 char uuid1[128], uuid2[128];
581 afsUUID_to_string(&serverUUID[i], uuid1, sizeof(uuid1));
582 afsUUID_to_string(&tsp->uuid, uuid2, sizeof(uuid2));
583 afs_inet_ntoa_r(serverNumber[i], hoststr);
585 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation UUIDs do not match! %s != %s (%s)",
586 osi_LogSaveString(afsd_logp, uuid1),
587 osi_LogSaveString(afsd_logp, uuid2),
588 osi_LogSaveString(afsd_logp, hoststr));
593 * cm_NewServer will probe the file server which in turn will
594 * update the state on the volume group object. Do not probe
595 * in this thread. It will block the thread and can result in
596 * a recursive call to cm_UpdateVolumeLocation().
598 lock_ReleaseWrite(&volp->rw);
599 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, &serverUUID[i], CM_FLAG_NOPROBE);
600 lock_ObtainWrite(&volp->rw);
602 osi_assertx(tsp != NULL, "null cm_server_t");
605 * if this server was created by fs setserverprefs
606 * then it won't have either a cell assignment or
611 if ( (method == 2) && !(tsp->flags & CM_SERVERFLAG_UUID) &&
612 !afs_uuid_is_nil(&serverUUID[i])) {
613 tsp->uuid = serverUUID[i];
614 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_UUID);
617 /* and add it to the list(s). */
619 * Each call to cm_NewServerRef() increments the
620 * ref count of tsp. These reference will be dropped,
621 * if and when the volume is reset; see reset code
622 * earlier in this function.
624 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
625 tsrp = cm_NewServerRef(tsp, rwID);
626 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
627 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
628 rwServers_alldown = 0;
631 * If there are mixed versions of RO releases on the replica
632 * sites, skip the servers with the out of date versions.
634 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS) &&
635 (!isMixed || (tflags & VLSF_NEWREPSITE))) {
636 tsrp = cm_NewServerRef(tsp, roID);
637 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
640 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
641 roServers_alldown = 0;
643 /* We don't use VLSF_BACKVOL !?! */
644 /* Because only the backup on the server holding the RW
645 * volume can be valid. This check prevents errors if a
646 * RW is moved but the old backup is not removed.
648 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
649 tsrp = cm_NewServerRef(tsp, bkID);
650 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
652 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
653 bkServers_alldown = 0;
655 /* Drop the reference obtained by cm_FindServer() */
662 * If the first n servers have the same rank, then we
663 * randomly pick one among them and move it to the beginning.
664 * We don't bother to re-order the whole list because
665 * the rest of the list is used only if the first server is
666 * down. We only do this for the RO list; we assume the other
667 * lists are length 1.
670 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
671 _InterlockedOr(&volp->vol[ROVOL].flags, CM_VOL_STATE_FLAG_REPLICATED);
674 _InterlockedAnd(&volp->vol[ROVOL].flags, ~CM_VOL_STATE_FLAG_REPLICATED);
677 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
678 roNewstate = roServers_alldown ? vl_alldown : vl_online;
679 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
681 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_NOEXIST);
682 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
683 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_NOEXIST);
685 rwNewstate = roNewstate = bkNewstate = vl_alldown;
688 * we are updating lastUpdateTime but didn't get an answer
689 * so clear the no exist flag.
691 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_NOEXIST);
694 if (volp->vol[RWVOL].state != rwNewstate) {
695 if (volp->vol[RWVOL].ID)
696 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
697 volp->vol[RWVOL].state = rwNewstate;
699 if (volp->vol[ROVOL].state != roNewstate) {
700 if (volp->vol[ROVOL].ID)
701 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
702 volp->vol[ROVOL].state = roNewstate;
704 if (volp->vol[BACKVOL].state != bkNewstate) {
705 if (volp->vol[BACKVOL].ID)
706 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
707 volp->vol[BACKVOL].state = bkNewstate;
710 volp->lastUpdateTime = time(NULL);
712 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RO_MIXED);
714 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_RO_MIXED);
717 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_RESET);
719 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_UPDATING_VL);
720 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
721 osi_LogSaveString(afsd_logp,volp->cellp->name),
722 osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
723 osi_Wakeup((LONG_PTR) &volp->flags);
728 /* Requires read or write lock on cm_volumeLock */
729 void cm_GetVolume(cm_volume_t *volp)
731 InterlockedIncrement(&volp->refCount);
734 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
739 lock_ObtainRead(&cm_volumeLock);
740 hash = CM_VOLUME_ID_HASH(fidp->volume);
741 /* The volumeID can be any one of the three types. So we must
742 * search the hash table for all three types until we find it.
743 * We will search in the order of RO, RW, BK.
745 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
746 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
751 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
752 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
758 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
759 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
764 /* hold the volume if we found it */
768 lock_ReleaseRead(&cm_volumeLock);
772 cm_volume_t *cm_FindVolumeByFID(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
774 cm_volume_t *volp = NULL;
778 cellp = cm_FindCellByID(fidp->cell, CM_FLAG_NOPROBE);
783 code = cm_FindVolumeByID(cellp, fidp->volume, userp, reqp, CM_GETVOL_FLAG_CREATE, &volp);
790 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
791 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
794 #ifdef SEARCH_ALL_VOLUMES
797 char volNameString[VL_MAXNAMELEN];
801 lock_ObtainRead(&cm_volumeLock);
802 #ifdef SEARCH_ALL_VOLUMES
803 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
804 if (cellp == volp->cellp &&
805 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
806 (unsigned) volumeID == volp->vol[ROVOL].ID ||
807 (unsigned) volumeID == volp->vol[BACKVOL].ID))
812 #endif /* SEARCH_ALL_VOLUMES */
814 hash = CM_VOLUME_ID_HASH(volumeID);
815 /* The volumeID can be any one of the three types. So we must
816 * search the hash table for all three types until we find it.
817 * We will search in the order of RO, RW, BK.
819 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
820 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
825 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
826 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
832 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
833 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
838 #ifdef SEARCH_ALL_VOLUMES
839 osi_assertx(volp == volp2, "unexpected cm_vol_t");
842 /* hold the volume if we found it */
846 lock_ReleaseRead(&cm_volumeLock);
850 lock_ObtainWrite(&volp->rw);
853 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
854 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
856 lock_ReleaseWrite(&volp->rw);
860 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
861 lock_ObtainWrite(&cm_volumeLock);
862 cm_AdjustVolumeLRU(volp);
863 lock_ReleaseWrite(&cm_volumeLock);
866 lock_ObtainRead(&cm_volumeLock);
868 lock_ReleaseRead(&cm_volumeLock);
873 /* otherwise, we didn't find it so consult the VLDB */
874 sprintf(volNameString, "%u", volumeID);
875 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
876 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
878 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
879 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
880 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
883 code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp,
884 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
891 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
892 struct cm_user *userp, struct cm_req *reqp,
893 afs_uint32 flags, cm_volume_t **outVolpp)
896 #ifdef SEARCH_ALL_VOLUMES
900 char name[VL_MAXNAMELEN];
905 strncpy(name, volumeNamep, VL_MAXNAMELEN);
906 name[VL_MAXNAMELEN-1] = '\0';
909 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
911 name[len - 7] = '\0';
912 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
914 name[len - 9] = '\0';
919 lock_ObtainRead(&cm_volumeLock);
920 #ifdef SEARCH_ALL_VOLUMES
921 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
922 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
927 #endif /* SEARCH_ALL_VOLUMES */
929 hash = CM_VOLUME_NAME_HASH(name);
930 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
931 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
935 #ifdef SEARCH_ALL_VOLUMES
936 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
939 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
941 /* otherwise, get from VLDB */
944 * Change to a write lock so that we have exclusive use of
945 * the first cm_volume_t with a refCount of 0 so that we
946 * have time to increment it.
948 lock_ConvertRToW(&cm_volumeLock);
951 * While the lock was converted it may have been dropped
952 * Search again now that we are exclusive.
954 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
955 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
961 lock_ReleaseWrite(&cm_volumeLock);
962 lock_ObtainWrite(&volp->rw);
964 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
965 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
966 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
967 if ( volp->refCount == 0 ) {
968 /* There is one we can re-use */
973 for ( volp = cm_data.volumeLRULastp;
975 volp = (cm_volume_t *) osi_QPrev(&volp->q))
977 if ( volp->refCount == 0 ) {
978 /* There is one we can re-use */
984 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
986 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
987 volp->cellp->name, volp->namep);
989 /* The volp is removed from the LRU queue in order to
990 * prevent two threads from attempting to recycle the
991 * same object. This volp must be re-inserted back into
992 * the LRU queue before this function exits.
994 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
995 cm_RemoveVolumeFromLRU(volp);
996 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
997 cm_RemoveVolumeFromNameHashTable(volp);
999 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1000 if (volp->vol[volType].qflags & CM_VOLUME_QFLAG_IN_HASH)
1001 cm_RemoveVolumeFromIDHashTable(volp, volType);
1002 if (volp->vol[volType].ID)
1003 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
1004 volp->vol[volType].ID = 0;
1005 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
1008 volp = &cm_data.volumeBaseAddress[InterlockedIncrement(&cm_data.currentVolumes) - 1];
1009 memset(volp, 0, sizeof(cm_volume_t));
1010 volp->magic = CM_VOLUME_MAGIC;
1011 volp->allNextp = cm_data.allVolumesp;
1012 cm_data.allVolumesp = volp;
1013 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
1016 * no one else can find this object and we have not dropped
1017 * cm_volumeLock in any case. The object is either new or
1018 * recycled. Initialize its new values and put it into the
1019 * name hash table before dropping cm_volumeLock which makes
1020 * it visible to competing threads.
1022 volp->cellp = cellp;
1023 strncpy(volp->namep, name, VL_MAXNAMELEN);
1024 volp->namep[VL_MAXNAMELEN-1] = '\0';
1025 volp->flags = CM_VOLUMEFLAG_RESET;
1026 volp->lastUpdateTime = 0;
1028 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1029 volp->vol[volType].state = vl_unknown;
1030 volp->vol[volType].nextp = NULL;
1031 volp->vol[volType].flags = 0;
1033 volp->cbExpiresRO = 0;
1034 volp->cbIssuedRO = 0;
1035 volp->cbServerpRO = NULL;
1036 volp->creationDateRO = 0;
1037 cm_AddVolumeToNameHashTable(volp);
1039 lock_ReleaseWrite(&cm_volumeLock);
1040 lock_ObtainWrite(&volp->rw);
1041 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1042 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
1048 lock_ReleaseRead(&cm_volumeLock);
1049 lock_ObtainWrite(&volp->rw);
1051 lock_ReleaseRead(&cm_volumeLock);
1052 return CM_ERROR_NOSUCHVOLUME;
1055 /* if we get here we are holding the mutex */
1056 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
1057 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1059 lock_ReleaseWrite(&volp->rw);
1061 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
1062 type == ROVOL && volp->vol[ROVOL].ID == 0))
1063 code = CM_ERROR_NOSUCHVOLUME;
1068 lock_ObtainWrite(&cm_volumeLock);
1069 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
1070 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
1071 cm_AdjustVolumeLRU(volp);
1072 lock_ReleaseWrite(&cm_volumeLock);
1075 * do not return it to the caller but do insert it in the LRU
1076 * otherwise it will be lost
1078 lock_ObtainWrite(&cm_volumeLock);
1079 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
1080 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
1081 cm_AdjustVolumeLRU(volp);
1083 lock_ReleaseWrite(&cm_volumeLock);
1086 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
1087 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
1088 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
1091 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
1092 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
1099 * Only call this function in response to a VNOVOL or VMOVED error
1100 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
1101 * as that can lead to recursive calls.
1103 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
1107 #ifdef SEARCH_ALL_VOLUMES
1114 return CM_ERROR_INVAL;
1116 cellp = cm_FindCellByID(fidp->cell, 0);
1118 return CM_ERROR_NOSUCHCELL;
1120 /* search for the volume */
1121 lock_ObtainRead(&cm_volumeLock);
1122 #ifdef SEARCH_ALL_VOLUMES
1123 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1124 if (cellp == volp->cellp &&
1125 (fidp->volume == volp->vol[RWVOL].ID ||
1126 fidp->volume == volp->vol[ROVOL].ID ||
1127 fidp->volume == volp->vol[BACKVOL].ID))
1130 #endif /* SEARCH_ALL_VOLUMES */
1132 hash = CM_VOLUME_ID_HASH(fidp->volume);
1133 /* The volumeID can be any one of the three types. So we must
1134 * search the hash table for all three types until we find it.
1135 * We will search in the order of RO, RW, BK.
1137 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
1138 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
1142 /* try RW volumes */
1143 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
1144 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
1149 /* try BK volumes */
1150 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
1151 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1156 #ifdef SEARCH_ALL_VOLUMES
1157 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1159 /* hold the volume if we found it */
1163 lock_ReleaseRead(&cm_volumeLock);
1166 return CM_ERROR_NOSUCHVOLUME;
1169 cm_data.mountRootGen = time(NULL);
1170 lock_ObtainWrite(&volp->rw);
1171 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1172 volp->lastUpdateTime = 0;
1174 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1175 lock_ReleaseWrite(&volp->rw);
1177 lock_ObtainRead(&cm_volumeLock);
1179 lock_ReleaseRead(&cm_volumeLock);
1184 /* find the appropriate servers from a volume */
1185 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volid, cm_user_t *userp, cm_req_t *reqp, afs_uint32 *replicated)
1187 cm_serverRef_t **serverspp;
1188 cm_serverRef_t *current;
1190 cm_vol_state_t *volstatep = NULL;
1193 volstatep = cm_VolumeStateByID(volp, volid);
1195 lock_ObtainWrite(&cm_serverLock);
1198 *replicated = (volstatep->flags & CM_VOL_STATE_FLAG_REPLICATED);
1199 serverspp = &volstatep->serversp;
1201 lock_ReleaseWrite(&cm_serverLock);
1205 lock_ObtainWrite(&volp->rw);
1206 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1207 volp->lastUpdateTime = 0;
1208 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1209 lock_ReleaseWrite(&volp->rw);
1217 * Increment the refCount on deleted items as well.
1218 * They will be freed by cm_FreeServerList when they get to zero
1220 for (current = *serverspp; current; current = current->next)
1221 cm_GetServerRef(current, TRUE);
1223 lock_ReleaseWrite(&cm_serverLock);
1228 void cm_PutVolume(cm_volume_t *volp)
1230 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1231 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1234 /* return the read-only volume, if there is one, or the read-write volume if
1237 long cm_GetROVolumeID(cm_volume_t *volp)
1241 lock_ObtainRead(&volp->rw);
1242 if (volp->vol[ROVOL].ID && !cm_IsServerListEmpty(volp->vol[ROVOL].serversp))
1243 id = volp->vol[ROVOL].ID;
1245 id = volp->vol[RWVOL].ID;
1246 lock_ReleaseRead(&volp->rw);
1251 void cm_RefreshVolumes(int lifetime)
1259 /* force mount point target updates */
1260 if (cm_data.mountRootGen + lifetime <= now)
1261 cm_data.mountRootGen = now;
1264 * force a re-loading of volume data from the vldb
1265 * if the lifetime for the cached data has expired
1267 lock_ObtainRead(&cm_volumeLock);
1268 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1270 lock_ReleaseRead(&cm_volumeLock);
1272 if (!(volp->flags & CM_VOLUMEFLAG_RESET) ||
1273 (volp->flags & CM_VOLUMEFLAG_NOEXIST)) {
1274 lock_ObtainWrite(&volp->rw);
1275 if (volp->flags & CM_VOLUMEFLAG_NOEXIST) {
1276 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_NOEXIST);
1279 if (volp->flags & CM_VOLUMEFLAG_RO_MIXED) {
1280 if (volp->lastUpdateTime + 300 <= now) {
1281 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1282 volp->lastUpdateTime = 0;
1285 if (volp->lastUpdateTime + lifetime <= now) {
1286 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1287 volp->lastUpdateTime = 0;
1290 lock_ReleaseWrite(&volp->rw);
1293 lock_ObtainRead(&cm_volumeLock);
1296 lock_ReleaseRead(&cm_volumeLock);
1300 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1301 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1305 AFSFetchVolumeStatus volStat;
1310 struct rx_connection * rxconnp;
1313 char offLineMsg[256];
1315 long alldown, alldeleted;
1316 cm_serverRef_t *serversp;
1318 cm_scache_t *vscp = NULL;
1321 OfflineMsg = offLineMsg;
1324 volType = cm_VolumeType(volp, volID);
1326 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1327 /* create fid for volume root so that VNOVOL and VMOVED errors can be processed */
1328 cm_SetFid(&vfid, volp->cellp->cellID, statep->ID, 1, 1);
1330 if (!statep->serversp && !(*volumeUpdatedp)) {
1332 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1333 *volumeUpdatedp = 1;
1336 lock_ObtainRead(&cm_serverLock);
1337 if (statep->serversp) {
1340 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1341 if (serversp->status == srv_deleted)
1346 if (!(serversp->server->flags & CM_SERVERFLAG_DOWN))
1349 if (serversp->status == srv_busy || serversp->status == srv_offline)
1350 serversp->status = srv_not_busy;
1352 lock_ReleaseRead(&cm_serverLock);
1354 if (alldeleted && !(*volumeUpdatedp)) {
1356 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1357 *volumeUpdatedp = 1;
1360 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1361 (!alldown && statep->state == vl_alldown)) {
1363 req.flags |= CM_REQ_OFFLINE_VOL_CHK;
1364 lock_ReleaseWrite(&volp->rw);
1366 code = cm_GetSCache(&vfid, NULL, &vscp, cm_rootUserp, &req);
1369 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1373 rxconnp = cm_GetRxConn(connp);
1374 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1375 &volStat, &Name, &OfflineMsg, &MOTD);
1376 rx_PutConnection(rxconnp);
1377 } while (cm_Analyze(connp, cm_rootUserp, &req, &vfid, NULL, 0, NULL, NULL, NULL, NULL, code));
1378 code = cm_MapRPCError(code, &req);
1380 if (code == 0 && volType == ROVOL)
1382 lock_ObtainWrite(&volp->rw);
1383 volp->volumeSizeRO = volStat.BlocksInUse * 1024;
1384 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RO_SIZE_VALID);
1385 lock_ReleaseWrite(&volp->rw);
1388 cm_ReleaseSCache(vscp);
1390 lock_ObtainWrite(&volp->rw);
1391 if (code == 0 && volStat.Online) {
1392 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1393 statep->state = vl_online;
1395 } else if (code == CM_ERROR_NOACCESS) {
1396 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1397 statep->state = vl_unknown;
1400 } else if (alldown && statep->state != vl_alldown) {
1401 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1402 statep->state = vl_alldown;
1405 lock_ReleaseRead(&cm_serverLock);
1406 if (statep->state != vl_alldown) {
1407 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1408 statep->state = vl_alldown;
1414 /* The return code is 0 if the volume is not online and
1415 * 1 if the volume is online
1418 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1422 afs_uint32 online = 0;
1423 afs_uint32 volumeUpdated = 0;
1425 lock_ObtainWrite(&volp->rw);
1427 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1429 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1433 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1434 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1435 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1437 lock_ReleaseWrite(&volp->rw);
1443 * called from the Daemon thread.
1444 * when checking the offline status, check those of the most recently used volumes first.
1446 void cm_CheckOfflineVolumes(void)
1450 extern int daemon_ShutdownFlag;
1451 extern int powerStateSuspended;
1453 lock_ObtainRead(&cm_volumeLock);
1454 for (volp = cm_data.volumeLRULastp;
1455 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1456 volp=(cm_volume_t *) osi_QPrev(&volp->q)) {
1458 * Skip volume entries that did not exist last time
1459 * the vldb was queried. For those entries wait until
1460 * the next actual request is received for the volume
1461 * before checking its state.
1463 if ((volp->qflags & CM_VOLUME_QFLAG_IN_HASH) &&
1464 !(volp->flags & CM_VOLUMEFLAG_NOEXIST)) {
1466 lock_ReleaseRead(&cm_volumeLock);
1467 cm_CheckOfflineVolume(volp, 0);
1468 lock_ObtainRead(&cm_volumeLock);
1472 lock_ReleaseRead(&cm_volumeLock);
1477 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1479 enum volstatus newStatus;
1480 cm_serverRef_t *tsrp;
1482 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1485 if (!volp || !statep) {
1492 lock_ObtainWrite(&cm_serverLock);
1493 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1495 sprintf(addr, "%d.%d.%d.%d",
1496 ((tsp->addr.sin_addr.s_addr & 0xff)),
1497 ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
1498 ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
1499 ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
1501 if (tsrp->status == srv_deleted) {
1502 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
1503 statep->ID, osi_LogSaveString(afsd_logp,addr));
1507 cm_GetServerNoLock(tsp);
1508 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1510 if (tsrp->status == srv_busy) {
1511 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
1512 statep->ID, osi_LogSaveString(afsd_logp,addr));
1515 } else if (tsrp->status == srv_offline) {
1516 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
1517 statep->ID, osi_LogSaveString(afsd_logp,addr));
1521 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1522 statep->ID, osi_LogSaveString(afsd_logp,addr));
1527 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s down",
1528 statep->ID, osi_LogSaveString(afsd_logp,addr));
1530 cm_PutServerNoLock(tsp);
1533 lock_ReleaseWrite(&cm_serverLock);
1535 osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
1536 allDown, allBusy, someBusy, someOffline, allOffline);
1539 newStatus = vl_alldown;
1540 else if (allBusy || (someBusy && someOffline))
1541 newStatus = vl_busy;
1542 else if (allOffline)
1543 newStatus = vl_offline;
1545 newStatus = vl_online;
1547 if (statep->ID && statep->state != newStatus)
1548 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1550 statep->state = newStatus;
1554 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1557 if (volp->vol[RWVOL].ID == volID) {
1558 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1559 } else if (volp->vol[ROVOL].ID == volID) {
1560 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1561 } else if (volp->vol[BACKVOL].ID == volID) {
1562 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1565 * If we are called with volID == 0 then something has gone wrong.
1566 * Most likely a race occurred in the server volume list maintenance.
1567 * Since we don't know which volume's status should be updated,
1568 * just update all of them that are known to exist. Better to be
1569 * correct than fast.
1572 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1573 if (volp->vol[volType].ID != 0)
1574 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1580 ** Finds all volumes that reside on this server and reorders their
1581 ** RO list according to the changed rank of server.
1583 void cm_ChangeRankVolume(cm_server_t *tsp)
1589 /* find volumes which might have RO copy on server*/
1590 lock_ObtainRead(&cm_volumeLock);
1591 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1593 code = 1 ; /* assume that list is unchanged */
1595 lock_ReleaseRead(&cm_volumeLock);
1596 lock_ObtainWrite(&volp->rw);
1598 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1599 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1601 /* this volume list was changed */
1603 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1605 lock_ReleaseWrite(&volp->rw);
1606 lock_ObtainRead(&cm_volumeLock);
1609 lock_ReleaseRead(&cm_volumeLock);
1612 /* dump all volumes that have reference count > 0 to a file.
1613 * cookie is used to identify this batch for easy parsing,
1614 * and it a string provided by a caller
1616 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1623 lock_ObtainRead(&cm_scacheLock);
1624 lock_ObtainRead(&cm_volumeLock);
1627 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n",
1628 cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1629 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1631 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1634 char *srvStr = NULL;
1635 afs_uint32 srvStrRpc = TRUE;
1639 if (volp->cbServerpRO) {
1640 if (!((volp->cbServerpRO->flags & CM_SERVERFLAG_UUID) &&
1641 UuidToString((UUID *)&volp->cbServerpRO->uuid, &srvStr) == RPC_S_OK)) {
1642 srvStr = malloc(16);
1644 afs_inet_ntoa_r(volp->cbServerpRO->addr.sin_addr.s_addr, srvStr);
1648 if (volp->cbExpiresRO) {
1649 t = volp->cbExpiresRO;
1653 cbt[strlen(cbt)-1] = '\0';
1656 if (volp->creationDateRO) {
1657 t = volp->creationDateRO;
1660 cdrot = strdup(cdrot);
1661 cdrot[strlen(cdrot)-1] = '\0';
1666 "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x:%x "
1667 "cbServerpRO='%s' cbExpiresRO='%s' creationDateRO='%s' refCount=%u\r\n",
1668 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID,
1669 volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags, volp->qflags,
1670 srvStr ? srvStr : "<none>", cbt ? cbt : "<none>", cdrot ? cdrot : "<none>",
1672 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1676 RpcStringFree(&srvStr);
1685 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1686 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1689 lock_ReleaseRead(&cm_volumeLock);
1690 lock_ReleaseRead(&cm_scacheLock);
1697 * String hash function used by SDBM project.
1698 * It was chosen because it is fast and provides
1701 afs_uint32 SDBMHash(const char * str)
1703 afs_uint32 hash = 0;
1709 for(i = 0, len = strlen(str); i < len; i++)
1711 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1714 return (hash & 0x7FFFFFFF);
1717 /* call with volume write-locked and mutex held */
1718 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1722 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
1725 i = CM_VOLUME_NAME_HASH(volp->namep);
1727 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1728 cm_data.volumeNameHashTablep[i] = volp;
1729 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_HASH);
1732 /* call with volume write-locked and mutex held */
1733 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1735 cm_volume_t **lvolpp;
1739 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1740 /* hash it out first */
1741 i = CM_VOLUME_NAME_HASH(volp->namep);
1742 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1744 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1745 if (tvolp == volp) {
1746 *lvolpp = volp->nameNextp;
1747 _InterlockedAnd(&volp->qflags, ~CM_VOLUME_QFLAG_IN_HASH);
1748 volp->nameNextp = NULL;
1755 /* call with volume write-locked and mutex held */
1756 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1759 struct cm_vol_state * statep;
1761 statep = cm_VolumeStateByType(volp, volType);
1763 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH)
1766 i = CM_VOLUME_ID_HASH(statep->ID);
1770 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1771 cm_data.volumeRWIDHashTablep[i] = volp;
1774 statep->nextp = cm_data.volumeROIDHashTablep[i];
1775 cm_data.volumeROIDHashTablep[i] = volp;
1778 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1779 cm_data.volumeBKIDHashTablep[i] = volp;
1782 _InterlockedOr(&statep->qflags, CM_VOLUME_QFLAG_IN_HASH);
1786 /* call with volume write-locked and mutex held */
1787 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1789 cm_volume_t **lvolpp;
1791 struct cm_vol_state * statep;
1794 statep = cm_VolumeStateByType(volp, volType);
1796 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1797 /* hash it out first */
1798 i = CM_VOLUME_ID_HASH(statep->ID);
1802 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1803 tvolp = cm_data.volumeRWIDHashTablep[i];
1806 lvolpp = &cm_data.volumeROIDHashTablep[i];
1807 tvolp = cm_data.volumeROIDHashTablep[i];
1810 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1811 tvolp = cm_data.volumeBKIDHashTablep[i];
1814 osi_assertx(0, "invalid volume type");
1817 if (tvolp == volp) {
1818 *lvolpp = statep->nextp;
1819 _InterlockedAnd(&statep->qflags, ~CM_VOLUME_QFLAG_IN_HASH);
1820 statep->nextp = NULL;
1824 lvolpp = &tvolp->vol[volType].nextp;
1825 tvolp = tvolp->vol[volType].nextp;
1830 /* must be called with cm_volumeLock write-locked! */
1831 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1833 lock_AssertWrite(&cm_volumeLock);
1835 if (volp == cm_data.volumeLRUFirstp)
1838 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1839 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1840 osi_QAddH((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1841 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1843 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1846 /* must be called with cm_volumeLock write-locked! */
1847 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1849 lock_AssertWrite(&cm_volumeLock);
1851 if (volp == cm_data.volumeLRULastp)
1854 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1855 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1856 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1857 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1859 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1862 /* must be called with cm_volumeLock write-locked! */
1863 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1865 lock_AssertWrite(&cm_volumeLock);
1867 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) {
1868 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1869 _InterlockedAnd(&volp->qflags, ~CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1872 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1875 static char * volstatus_str(enum volstatus vs)
1891 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1893 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1896 if (volID == volp->vol[RWVOL].ID)
1898 else if (volID == volp->vol[ROVOL].ID)
1900 else if (volID == volp->vol[BACKVOL].ID)
1904 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1906 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1907 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1909 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1912 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1914 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1916 return statep->state;
1921 /* Renew .readonly volume callbacks that are more than
1922 * 30 minutes old. (A volume callback is issued for 2 hours.)
1925 cm_VolumeRenewROCallbacks(void)
1928 time_t minexp = time(NULL) + 90 * 60;
1929 extern int daemon_ShutdownFlag;
1930 extern int powerStateSuspended;
1932 lock_ObtainRead(&cm_volumeLock);
1933 for (volp = cm_data.allVolumesp;
1934 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1935 volp=volp->allNextp) {
1936 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1941 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1945 lock_ReleaseRead(&cm_volumeLock);
1946 if (cm_GetSCache(&fid, NULL, &scp, cm_rootUserp, &req) == 0) {
1947 lock_ObtainWrite(&scp->rw);
1948 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1949 lock_ReleaseWrite(&scp->rw);
1950 cm_ReleaseSCache(scp);
1952 lock_ObtainRead(&cm_volumeLock);
1955 lock_ReleaseRead(&cm_volumeLock);
1959 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1961 return &volp->vol[volType];
1965 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1967 cm_vol_state_t * statep = NULL;
1969 if (id == volp->vol[RWVOL].ID)
1970 statep = &volp->vol[RWVOL];
1971 else if (id == volp->vol[ROVOL].ID)
1972 statep = &volp->vol[ROVOL];
1973 else if (id == volp->vol[BACKVOL].ID)
1974 statep = &volp->vol[BACKVOL];
1980 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1982 size_t len = strlen(volname);
1983 cm_vol_state_t *statep;
1985 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1986 statep = &volp->vol[ROVOL];
1987 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1988 statep = &volp->vol[BACKVOL];
1990 statep = &volp->vol[RWVOL];
1996 cm_VolumeType(cm_volume_t *volp, afs_uint32 id)
1998 if (id == volp->vol[RWVOL].ID)
2000 else if (id == volp->vol[ROVOL].ID)
2002 else if (id == volp->vol[BACKVOL].ID)
2009 cm_ChecksumVolumeServerList(struct cm_fid *fidp, cm_user_t *userp, cm_req_t *reqp)
2013 afs_uint32 replicated;
2014 cm_serverRef_t **serverspp;
2016 code = cm_GetServerList(fidp, userp, reqp, &replicated, &serverspp);
2018 cksum = cm_ChecksumServerList(*serverspp);
2019 cm_FreeServerList(serverspp, 0);
2025 cm_IsVolumeReplicated(cm_fid_t *fidp)
2027 afs_int32 replicated = 0;
2029 cm_vol_state_t * volstatep;
2031 volp = cm_GetVolumeByFID(fidp);
2033 volstatep = cm_VolumeStateByID(volp, fidp->volume);
2034 replicated = (volstatep->flags & CM_VOL_STATE_FLAG_REPLICATED);