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 cellp = cm_UpdateCell(cellp, 0);
358 lock_ObtainWrite(&volp->rw);
359 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_UPDATING_VL);
360 return(CM_ERROR_NOSUCHCELL);
364 /* now we have volume structure locked and held; make RPC to fill it */
365 code = cm_GetEntryByName(cellp, volp->namep, &vldbEntry, &nvldbEntry,
367 &method, userp, reqp);
369 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
370 * does not exist and is not a numeric string but there might exist a .readonly volume.
371 * If the base name doesn't exist we will not care about the .backup that might be left
372 * behind since there should be no method to access it.
374 if (code == CM_ERROR_NOSUCHVOLUME &&
375 _atoi64(volp->namep) == 0 &&
376 volp->vol[RWVOL].ID == 0 &&
377 strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
378 char name[VL_MAXNAMELEN];
380 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
382 /* now we have volume structure locked and held; make RPC to fill it */
383 code = cm_GetEntryByName(cellp, name, &vldbEntry, &nvldbEntry,
385 &method, userp, reqp);
389 * What if there was a volume rename? The volume name no longer exists but the
390 * volume id might. Try to refresh the volume location information based one
391 * of the readwrite or readonly volume id.
393 if (code == CM_ERROR_NOSUCHVOLUME) {
394 if (volp->vol[RWVOL].ID != 0) {
395 code = cm_GetEntryByID(cellp, volp->vol[RWVOL].ID, &vldbEntry, &nvldbEntry,
397 &method, userp, reqp);
398 } else if (volp->vol[ROVOL].ID != 0) {
399 code = cm_GetEntryByID(cellp, volp->vol[ROVOL].ID, &vldbEntry, &nvldbEntry,
401 &method, userp, reqp);
404 lock_ObtainWrite(&volp->rw);
413 afs_int32 serverNumber[NMAXNSERVERS];
414 afs_int32 serverUnique[NMAXNSERVERS];
415 afs_int32 serverFlags[NMAXNSERVERS];
416 afsUUID serverUUID[NMAXNSERVERS];
417 afs_int32 rwServers_alldown = 1;
418 afs_int32 roServers_alldown = 1;
419 afs_int32 bkServers_alldown = 1;
420 char name[VL_MAXNAMELEN];
422 #ifdef AFS_FREELANCE_CLIENT
424 rwServers_alldown = 0;
427 /* clear out old bindings */
428 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
429 if (volp->vol[volType].serversp)
430 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
433 memset(serverUUID, 0, sizeof(serverUUID));
434 memset(serverUnique, 0, sizeof(serverUnique));
438 flags = vldbEntry.flags;
439 nServers = vldbEntry.nServers;
440 rwID = vldbEntry.volumeId[0];
441 roID = vldbEntry.volumeId[1];
442 bkID = vldbEntry.volumeId[2];
443 for ( i=0; i<nServers; i++ ) {
444 serverFlags[i] = vldbEntry.serverFlags[i];
445 serverNumber[i] = vldbEntry.serverNumber[i];
447 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
448 name[VL_MAXNAMELEN - 1] = '\0';
451 flags = nvldbEntry.flags;
452 nServers = nvldbEntry.nServers;
453 rwID = nvldbEntry.volumeId[0];
454 roID = nvldbEntry.volumeId[1];
455 bkID = nvldbEntry.volumeId[2];
456 for ( i=0; i<nServers; i++ ) {
457 serverFlags[i] = nvldbEntry.serverFlags[i];
458 serverNumber[i] = nvldbEntry.serverNumber[i];
460 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
461 name[VL_MAXNAMELEN - 1] = '\0';
464 flags = uvldbEntry.flags;
465 nServers = uvldbEntry.nServers;
466 rwID = uvldbEntry.volumeId[0];
467 roID = uvldbEntry.volumeId[1];
468 bkID = uvldbEntry.volumeId[2];
469 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
470 if ( !(uvldbEntry.serverFlags[i] & VLSF_UUID) ) {
471 serverFlags[j] = uvldbEntry.serverFlags[i];
472 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
475 code = cm_GetAddrsU(cellp, userp, reqp,
476 &uvldbEntry.serverNumber[i],
477 uvldbEntry.serverUnique[i],
478 uvldbEntry.serverFlags[i], &j,
479 serverFlags, serverNumber,
480 serverUUID, serverUnique);
481 if (code == CM_ERROR_RETRY)
485 nServers = j; /* update the server count */
486 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
487 name[VL_MAXNAMELEN - 1] = '\0';
491 /* decode the response */
492 lock_ObtainWrite(&cm_volumeLock);
493 if (!cm_VolNameIsID(volp->namep)) {
498 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
499 name[len - 7] = '\0';
500 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
501 name[len - 9] = '\0';
504 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
505 osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
507 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
508 cm_RemoveVolumeFromNameHashTable(volp);
510 strcpy(volp->namep, name);
512 cm_AddVolumeToNameHashTable(volp);
515 if (flags & VLF_DFSFILESET) {
516 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_DFS_VOLUME);
517 osi_Log1(afsd_logp, "cm_UpdateVolume Volume Group '%s' is a DFS File Set. Correct behavior is not implemented.",
518 osi_LogSaveString(afsd_logp, volp->namep));
521 if (flags & VLF_RWEXISTS) {
522 if (volp->vol[RWVOL].ID != rwID) {
523 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
524 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
525 volp->vol[RWVOL].ID = rwID;
526 cm_AddVolumeToIDHashTable(volp, RWVOL);
529 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
530 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
531 volp->vol[RWVOL].ID = 0;
533 if (flags & VLF_ROEXISTS) {
534 if (volp->vol[ROVOL].ID != roID) {
535 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
536 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
537 volp->vol[ROVOL].ID = roID;
538 cm_AddVolumeToIDHashTable(volp, ROVOL);
541 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
542 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
543 volp->vol[ROVOL].ID = 0;
545 if (flags & VLF_BACKEXISTS) {
546 if (volp->vol[BACKVOL].ID != bkID) {
547 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
548 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
549 volp->vol[BACKVOL].ID = bkID;
550 cm_AddVolumeToIDHashTable(volp, BACKVOL);
553 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
554 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
555 volp->vol[BACKVOL].ID = 0;
557 lock_ReleaseWrite(&cm_volumeLock);
559 /* See if the replica sites are mixed versions */
560 for (i=0; i<nServers; i++) {
561 if (serverFlags[i] & VLSF_NEWREPSITE) {
567 for (i=0; i<nServers; i++) {
568 /* create a server entry */
569 tflags = serverFlags[i];
570 if (tflags & VLSF_DONTUSE)
572 tsockAddr.sin_port = htons(7000);
573 tsockAddr.sin_family = AF_INET;
574 tempAddr = htonl(serverNumber[i]);
575 tsockAddr.sin_addr.s_addr = tempAddr;
576 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE, FALSE);
577 if (tsp && (method == 2) && (tsp->flags & CM_SERVERFLAG_UUID)) {
579 * Check to see if the uuid of the server we know at this address
580 * matches the uuid of the server we are being told about by the
581 * vlserver. If not, ...?
583 if (!afs_uuid_equal(&serverUUID[i], &tsp->uuid)) {
584 struct uuid_fmtbuf uuid1, uuid2;
586 afsUUID_to_string(&serverUUID[i], &uuid1);
587 afsUUID_to_string(&tsp->uuid, &uuid2);
588 afs_inet_ntoa_r(serverNumber[i], hoststr);
590 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation UUIDs do not match! %s != %s (%s)",
591 osi_LogSaveString(afsd_logp, uuid1.buffer),
592 osi_LogSaveString(afsd_logp, uuid2.buffer),
593 osi_LogSaveString(afsd_logp, hoststr));
598 * cm_NewServer will probe the file server which in turn will
599 * update the state on the volume group object. Do not probe
600 * in this thread. It will block the thread and can result in
601 * a recursive call to cm_UpdateVolumeLocation().
603 lock_ReleaseWrite(&volp->rw);
604 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, &serverUUID[i], CM_FLAG_NOPROBE);
605 lock_ObtainWrite(&volp->rw);
607 osi_assertx(tsp != NULL, "null cm_server_t");
610 * if this server was created by fs setserverprefs
611 * then it won't have either a cell assignment or
616 if ( (method == 2) && !(tsp->flags & CM_SERVERFLAG_UUID) &&
617 !afs_uuid_is_nil(&serverUUID[i])) {
618 tsp->uuid = serverUUID[i];
619 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_UUID);
622 /* and add it to the list(s). */
624 * Each call to cm_NewServerRef() increments the
625 * ref count of tsp. These reference will be dropped,
626 * if and when the volume is reset; see reset code
627 * earlier in this function.
629 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
630 tsrp = cm_NewServerRef(tsp, rwID);
631 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
632 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
633 rwServers_alldown = 0;
636 * If there are mixed versions of RO releases on the replica
637 * sites, skip the servers with the out of date versions.
639 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS) &&
640 (!isMixed || (tflags & VLSF_NEWREPSITE))) {
641 tsrp = cm_NewServerRef(tsp, roID);
642 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
645 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
646 roServers_alldown = 0;
648 /* We don't use VLSF_BACKVOL !?! */
649 /* Because only the backup on the server holding the RW
650 * volume can be valid. This check prevents errors if a
651 * RW is moved but the old backup is not removed.
653 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
654 tsrp = cm_NewServerRef(tsp, bkID);
655 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
657 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
658 bkServers_alldown = 0;
660 /* Drop the reference obtained by cm_FindServer() */
667 * If the first n servers have the same rank, then we
668 * randomly pick one among them and move it to the beginning.
669 * We don't bother to re-order the whole list because
670 * the rest of the list is used only if the first server is
671 * down. We only do this for the RO list; we assume the other
672 * lists are length 1.
675 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
676 _InterlockedOr(&volp->vol[ROVOL].flags, CM_VOL_STATE_FLAG_REPLICATED);
679 _InterlockedAnd(&volp->vol[ROVOL].flags, ~CM_VOL_STATE_FLAG_REPLICATED);
682 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
683 roNewstate = roServers_alldown ? vl_alldown : vl_online;
684 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
686 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_NOEXIST);
687 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
688 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_NOEXIST);
690 rwNewstate = roNewstate = bkNewstate = vl_alldown;
693 * we are updating lastUpdateTime but didn't get an answer
694 * so clear the no exist flag.
696 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_NOEXIST);
699 if (volp->vol[RWVOL].state != rwNewstate) {
700 if (volp->vol[RWVOL].ID)
701 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
702 volp->vol[RWVOL].state = rwNewstate;
704 if (volp->vol[ROVOL].state != roNewstate) {
705 if (volp->vol[ROVOL].ID)
706 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
707 volp->vol[ROVOL].state = roNewstate;
709 if (volp->vol[BACKVOL].state != bkNewstate) {
710 if (volp->vol[BACKVOL].ID)
711 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
712 volp->vol[BACKVOL].state = bkNewstate;
715 if (code == 0 || (volp->flags & CM_VOLUMEFLAG_NOEXIST))
716 volp->lastUpdateTime = time(NULL);
719 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RO_MIXED);
721 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_RO_MIXED);
724 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_RESET);
726 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_UPDATING_VL);
727 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
728 osi_LogSaveString(afsd_logp,volp->cellp->name),
729 osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
730 osi_Wakeup((LONG_PTR) &volp->flags);
735 /* Requires read or write lock on cm_volumeLock */
736 void cm_GetVolume(cm_volume_t *volp)
738 InterlockedIncrement(&volp->refCount);
741 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
746 lock_ObtainRead(&cm_volumeLock);
747 hash = CM_VOLUME_ID_HASH(fidp->volume);
748 /* The volumeID can be any one of the three types. So we must
749 * search the hash table for all three types until we find it.
750 * We will search in the order of RO, RW, BK.
752 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
753 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
758 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
759 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
765 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
766 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
771 /* hold the volume if we found it */
775 lock_ReleaseRead(&cm_volumeLock);
779 cm_volume_t *cm_FindVolumeByFID(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
781 cm_volume_t *volp = NULL;
785 cellp = cm_FindCellByID(fidp->cell, CM_FLAG_NOPROBE);
790 code = cm_FindVolumeByID(cellp, fidp->volume, userp, reqp, CM_GETVOL_FLAG_CREATE, &volp);
797 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
798 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
801 #ifdef SEARCH_ALL_VOLUMES
804 char volNameString[VL_MAXNAMELEN];
808 lock_ObtainRead(&cm_volumeLock);
809 #ifdef SEARCH_ALL_VOLUMES
810 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
811 if (cellp == volp->cellp &&
812 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
813 (unsigned) volumeID == volp->vol[ROVOL].ID ||
814 (unsigned) volumeID == volp->vol[BACKVOL].ID))
819 #endif /* SEARCH_ALL_VOLUMES */
821 hash = CM_VOLUME_ID_HASH(volumeID);
822 /* The volumeID can be any one of the three types. So we must
823 * search the hash table for all three types until we find it.
824 * We will search in the order of RO, RW, BK.
826 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
827 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
832 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
833 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
839 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
840 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
845 #ifdef SEARCH_ALL_VOLUMES
846 osi_assertx(volp == volp2, "unexpected cm_vol_t");
849 /* hold the volume if we found it */
853 lock_ReleaseRead(&cm_volumeLock);
857 lock_ObtainWrite(&volp->rw);
860 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
861 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
863 lock_ReleaseWrite(&volp->rw);
867 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
868 lock_ObtainWrite(&cm_volumeLock);
869 cm_AdjustVolumeLRU(volp);
870 lock_ReleaseWrite(&cm_volumeLock);
873 lock_ObtainRead(&cm_volumeLock);
875 lock_ReleaseRead(&cm_volumeLock);
880 /* otherwise, we didn't find it so consult the VLDB */
881 sprintf(volNameString, "%u", volumeID);
882 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
883 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
885 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
886 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
887 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
890 code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp,
891 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
898 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
899 struct cm_user *userp, struct cm_req *reqp,
900 afs_uint32 flags, cm_volume_t **outVolpp)
903 #ifdef SEARCH_ALL_VOLUMES
907 char name[VL_MAXNAMELEN];
912 strncpy(name, volumeNamep, VL_MAXNAMELEN);
913 name[VL_MAXNAMELEN-1] = '\0';
916 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
918 name[len - 7] = '\0';
919 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
921 name[len - 9] = '\0';
926 lock_ObtainRead(&cm_volumeLock);
927 #ifdef SEARCH_ALL_VOLUMES
928 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
929 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
934 #endif /* SEARCH_ALL_VOLUMES */
936 hash = CM_VOLUME_NAME_HASH(name);
937 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
938 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
942 #ifdef SEARCH_ALL_VOLUMES
943 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
946 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
948 /* otherwise, get from VLDB */
951 * Change to a write lock so that we have exclusive use of
952 * the first cm_volume_t with a refCount of 0 so that we
953 * have time to increment it.
955 lock_ConvertRToW(&cm_volumeLock);
958 * While the lock was converted it may have been dropped
959 * Search again now that we are exclusive.
961 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
962 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
968 lock_ReleaseWrite(&cm_volumeLock);
969 lock_ObtainWrite(&volp->rw);
971 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
972 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
973 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
974 if ( volp->refCount == 0 ) {
975 /* There is one we can re-use */
980 for ( volp = cm_data.volumeLRULastp;
982 volp = (cm_volume_t *) osi_QPrev(&volp->q))
984 if ( volp->refCount == 0 ) {
985 /* There is one we can re-use */
991 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
993 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
994 volp->cellp->name, volp->namep);
996 /* The volp is removed from the LRU queue in order to
997 * prevent two threads from attempting to recycle the
998 * same object. This volp must be re-inserted back into
999 * the LRU queue before this function exits.
1001 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1002 cm_RemoveVolumeFromLRU(volp);
1003 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
1004 cm_RemoveVolumeFromNameHashTable(volp);
1006 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1007 if (volp->vol[volType].qflags & CM_VOLUME_QFLAG_IN_HASH)
1008 cm_RemoveVolumeFromIDHashTable(volp, volType);
1009 if (volp->vol[volType].ID)
1010 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
1011 volp->vol[volType].ID = 0;
1012 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
1015 volp = &cm_data.volumeBaseAddress[InterlockedIncrement(&cm_data.currentVolumes) - 1];
1016 memset(volp, 0, sizeof(cm_volume_t));
1017 volp->magic = CM_VOLUME_MAGIC;
1018 volp->allNextp = cm_data.allVolumesp;
1019 cm_data.allVolumesp = volp;
1020 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
1023 * no one else can find this object and we have not dropped
1024 * cm_volumeLock in any case. The object is either new or
1025 * recycled. Initialize its new values and put it into the
1026 * name hash table before dropping cm_volumeLock which makes
1027 * it visible to competing threads.
1029 volp->cellp = cellp;
1030 strncpy(volp->namep, name, VL_MAXNAMELEN);
1031 volp->namep[VL_MAXNAMELEN-1] = '\0';
1032 volp->flags = CM_VOLUMEFLAG_RESET;
1033 volp->lastUpdateTime = 0;
1035 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1036 volp->vol[volType].state = vl_unknown;
1037 volp->vol[volType].nextp = NULL;
1038 volp->vol[volType].flags = 0;
1040 volp->cbExpiresRO = 0;
1041 volp->cbIssuedRO = 0;
1042 volp->cbServerpRO = NULL;
1043 volp->creationDateRO = 0;
1044 cm_AddVolumeToNameHashTable(volp);
1046 lock_ReleaseWrite(&cm_volumeLock);
1047 lock_ObtainWrite(&volp->rw);
1048 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1049 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
1055 lock_ReleaseRead(&cm_volumeLock);
1056 lock_ObtainWrite(&volp->rw);
1058 lock_ReleaseRead(&cm_volumeLock);
1059 return CM_ERROR_NOSUCHVOLUME;
1062 /* if we get here we are holding the mutex */
1063 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
1064 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1066 lock_ReleaseWrite(&volp->rw);
1068 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
1069 type == ROVOL && volp->vol[ROVOL].ID == 0))
1070 code = CM_ERROR_NOSUCHVOLUME;
1075 lock_ObtainWrite(&cm_volumeLock);
1076 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
1077 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
1078 cm_AdjustVolumeLRU(volp);
1079 lock_ReleaseWrite(&cm_volumeLock);
1082 * do not return it to the caller but do insert it in the LRU
1083 * otherwise it will be lost
1085 lock_ObtainWrite(&cm_volumeLock);
1086 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
1087 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
1088 cm_AdjustVolumeLRU(volp);
1090 lock_ReleaseWrite(&cm_volumeLock);
1093 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
1094 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
1095 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
1098 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
1099 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
1106 * Only call this function in response to a VNOVOL or VMOVED error
1107 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
1108 * as that can lead to recursive calls.
1110 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
1114 #ifdef SEARCH_ALL_VOLUMES
1121 return CM_ERROR_INVAL;
1123 cellp = cm_FindCellByID(fidp->cell, 0);
1125 return CM_ERROR_NOSUCHCELL;
1127 /* search for the volume */
1128 lock_ObtainRead(&cm_volumeLock);
1129 #ifdef SEARCH_ALL_VOLUMES
1130 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1131 if (cellp == volp->cellp &&
1132 (fidp->volume == volp->vol[RWVOL].ID ||
1133 fidp->volume == volp->vol[ROVOL].ID ||
1134 fidp->volume == volp->vol[BACKVOL].ID))
1137 #endif /* SEARCH_ALL_VOLUMES */
1139 hash = CM_VOLUME_ID_HASH(fidp->volume);
1140 /* The volumeID can be any one of the three types. So we must
1141 * search the hash table for all three types until we find it.
1142 * We will search in the order of RO, RW, BK.
1144 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
1145 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
1149 /* try RW volumes */
1150 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
1151 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
1156 /* try BK volumes */
1157 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
1158 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1163 #ifdef SEARCH_ALL_VOLUMES
1164 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1166 /* hold the volume if we found it */
1170 lock_ReleaseRead(&cm_volumeLock);
1173 return CM_ERROR_NOSUCHVOLUME;
1176 cm_data.mountRootGen = time(NULL);
1177 lock_ObtainWrite(&volp->rw);
1178 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1179 volp->lastUpdateTime = 0;
1181 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1182 lock_ReleaseWrite(&volp->rw);
1184 lock_ObtainRead(&cm_volumeLock);
1186 lock_ReleaseRead(&cm_volumeLock);
1191 /* find the appropriate servers from a volume */
1192 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volid, cm_user_t *userp, cm_req_t *reqp, afs_uint32 *replicated)
1194 cm_serverRef_t **serverspp;
1195 cm_serverRef_t *current;
1197 cm_vol_state_t *volstatep = NULL;
1200 volstatep = cm_VolumeStateByID(volp, volid);
1202 lock_ObtainWrite(&cm_serverLock);
1205 *replicated = (volstatep->flags & CM_VOL_STATE_FLAG_REPLICATED);
1206 serverspp = &volstatep->serversp;
1208 lock_ReleaseWrite(&cm_serverLock);
1212 lock_ObtainWrite(&volp->rw);
1213 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1214 volp->lastUpdateTime = 0;
1215 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1216 lock_ReleaseWrite(&volp->rw);
1224 * Increment the refCount on deleted items as well.
1225 * They will be freed by cm_FreeServerList when they get to zero
1227 for (current = *serverspp; current; current = current->next)
1228 cm_GetServerRef(current, TRUE);
1230 lock_ReleaseWrite(&cm_serverLock);
1235 void cm_PutVolume(cm_volume_t *volp)
1237 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1238 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1241 /* return the read-only volume, if there is one, or the read-write volume if
1244 long cm_GetROVolumeID(cm_volume_t *volp)
1248 lock_ObtainRead(&volp->rw);
1249 if (volp->vol[ROVOL].ID && !cm_IsServerListEmpty(volp->vol[ROVOL].serversp))
1250 id = volp->vol[ROVOL].ID;
1252 id = volp->vol[RWVOL].ID;
1253 lock_ReleaseRead(&volp->rw);
1258 void cm_RefreshVolumes(int lifetime)
1266 /* force mount point target updates */
1267 if (cm_data.mountRootGen + lifetime <= now)
1268 cm_data.mountRootGen = now;
1271 * force a re-loading of volume data from the vldb
1272 * if the lifetime for the cached data has expired
1274 lock_ObtainRead(&cm_volumeLock);
1275 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1277 lock_ReleaseRead(&cm_volumeLock);
1279 if (!(volp->flags & CM_VOLUMEFLAG_RESET) ||
1280 (volp->flags & CM_VOLUMEFLAG_NOEXIST)) {
1281 lock_ObtainWrite(&volp->rw);
1282 if (volp->flags & CM_VOLUMEFLAG_NOEXIST) {
1283 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_NOEXIST);
1286 if (volp->flags & CM_VOLUMEFLAG_RO_MIXED) {
1287 if (volp->lastUpdateTime + 300 <= now) {
1288 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1289 volp->lastUpdateTime = 0;
1292 if (volp->lastUpdateTime + lifetime <= now) {
1293 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1294 volp->lastUpdateTime = 0;
1297 lock_ReleaseWrite(&volp->rw);
1300 lock_ObtainRead(&cm_volumeLock);
1303 lock_ReleaseRead(&cm_volumeLock);
1307 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1308 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1312 AFSFetchVolumeStatus volStat;
1317 struct rx_connection * rxconnp;
1320 char offLineMsg[256];
1322 long alldown, alldeleted;
1323 cm_serverRef_t *serversp;
1325 cm_scache_t *vscp = NULL;
1328 OfflineMsg = offLineMsg;
1331 volType = cm_VolumeType(volp, volID);
1333 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1334 /* create fid for volume root so that VNOVOL and VMOVED errors can be processed */
1335 cm_SetFid(&vfid, volp->cellp->cellID, statep->ID, 1, 1);
1337 if (!statep->serversp && !(*volumeUpdatedp)) {
1339 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1340 *volumeUpdatedp = 1;
1343 lock_ObtainRead(&cm_serverLock);
1344 if (statep->serversp) {
1347 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1348 if (serversp->status == srv_deleted)
1353 if (!(serversp->server->flags & CM_SERVERFLAG_DOWN))
1356 if (serversp->status == srv_busy || serversp->status == srv_offline)
1357 serversp->status = srv_not_busy;
1359 lock_ReleaseRead(&cm_serverLock);
1361 if (alldeleted && !(*volumeUpdatedp)) {
1363 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1364 *volumeUpdatedp = 1;
1367 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1368 (!alldown && statep->state == vl_alldown)) {
1370 req.flags |= CM_REQ_OFFLINE_VOL_CHK;
1371 lock_ReleaseWrite(&volp->rw);
1373 code = cm_GetSCache(&vfid, NULL, &vscp, cm_rootUserp, &req);
1376 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1380 rxconnp = cm_GetRxConn(connp);
1381 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1382 &volStat, &Name, &OfflineMsg, &MOTD);
1383 rx_PutConnection(rxconnp);
1384 } while (cm_Analyze(connp, cm_rootUserp, &req, &vfid, NULL, 0, NULL, NULL, NULL, NULL, code));
1385 code = cm_MapRPCError(code, &req);
1387 if (code == 0 && volType == ROVOL)
1389 lock_ObtainWrite(&volp->rw);
1390 volp->volumeSizeRO = volStat.BlocksInUse * 1024;
1391 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RO_SIZE_VALID);
1392 lock_ReleaseWrite(&volp->rw);
1395 cm_ReleaseSCache(vscp);
1397 lock_ObtainWrite(&volp->rw);
1398 if (code == 0 && volStat.Online) {
1399 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1400 statep->state = vl_online;
1402 } else if (code == CM_ERROR_NOACCESS) {
1403 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1404 statep->state = vl_unknown;
1407 } else if (alldown && statep->state != vl_alldown) {
1408 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1409 statep->state = vl_alldown;
1412 lock_ReleaseRead(&cm_serverLock);
1413 if (statep->state != vl_alldown) {
1414 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1415 statep->state = vl_alldown;
1421 /* The return code is 0 if the volume is not online and
1422 * 1 if the volume is online
1425 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1429 afs_uint32 online = 0;
1430 afs_uint32 volumeUpdated = 0;
1432 lock_ObtainWrite(&volp->rw);
1434 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1436 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1440 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1441 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1442 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1444 lock_ReleaseWrite(&volp->rw);
1450 * called from the Daemon thread.
1451 * when checking the offline status, check those of the most recently used volumes first.
1453 void cm_CheckOfflineVolumes(void)
1457 extern int daemon_ShutdownFlag;
1458 extern int powerStateSuspended;
1460 lock_ObtainRead(&cm_volumeLock);
1461 for (volp = cm_data.volumeLRULastp;
1462 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1463 volp=(cm_volume_t *) osi_QPrev(&volp->q)) {
1465 * Skip volume entries that did not exist last time
1466 * the vldb was queried. For those entries wait until
1467 * the next actual request is received for the volume
1468 * before checking its state.
1470 if ((volp->qflags & CM_VOLUME_QFLAG_IN_HASH) &&
1471 !(volp->flags & CM_VOLUMEFLAG_NOEXIST)) {
1473 lock_ReleaseRead(&cm_volumeLock);
1474 cm_CheckOfflineVolume(volp, 0);
1475 lock_ObtainRead(&cm_volumeLock);
1479 lock_ReleaseRead(&cm_volumeLock);
1484 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1486 enum volstatus newStatus;
1487 cm_serverRef_t *tsrp;
1489 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1492 if (!volp || !statep) {
1499 lock_ObtainWrite(&cm_serverLock);
1500 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1502 sprintf(addr, "%d.%d.%d.%d",
1503 ((tsp->addr.sin_addr.s_addr & 0xff)),
1504 ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
1505 ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
1506 ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
1508 if (tsrp->status == srv_deleted) {
1509 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
1510 statep->ID, osi_LogSaveString(afsd_logp,addr));
1514 cm_GetServerNoLock(tsp);
1515 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1517 if (tsrp->status == srv_busy) {
1518 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
1519 statep->ID, osi_LogSaveString(afsd_logp,addr));
1522 } else if (tsrp->status == srv_offline) {
1523 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
1524 statep->ID, osi_LogSaveString(afsd_logp,addr));
1528 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1529 statep->ID, osi_LogSaveString(afsd_logp,addr));
1534 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s down",
1535 statep->ID, osi_LogSaveString(afsd_logp,addr));
1537 cm_PutServerNoLock(tsp);
1540 lock_ReleaseWrite(&cm_serverLock);
1542 osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
1543 allDown, allBusy, someBusy, someOffline, allOffline);
1546 newStatus = vl_alldown;
1547 else if (allBusy || (someBusy && someOffline))
1548 newStatus = vl_busy;
1549 else if (allOffline)
1550 newStatus = vl_offline;
1552 newStatus = vl_online;
1554 if (statep->ID && statep->state != newStatus)
1555 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1557 statep->state = newStatus;
1561 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1564 if (volp->vol[RWVOL].ID == volID) {
1565 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1566 } else if (volp->vol[ROVOL].ID == volID) {
1567 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1568 } else if (volp->vol[BACKVOL].ID == volID) {
1569 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1572 * If we are called with volID == 0 then something has gone wrong.
1573 * Most likely a race occurred in the server volume list maintenance.
1574 * Since we don't know which volume's status should be updated,
1575 * just update all of them that are known to exist. Better to be
1576 * correct than fast.
1579 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1580 if (volp->vol[volType].ID != 0)
1581 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1587 ** Finds all volumes that reside on this server and reorders their
1588 ** RO list according to the changed rank of server.
1590 void cm_ChangeRankVolume(cm_server_t *tsp)
1596 /* find volumes which might have RO copy on server*/
1597 lock_ObtainRead(&cm_volumeLock);
1598 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1600 code = 1 ; /* assume that list is unchanged */
1602 lock_ReleaseRead(&cm_volumeLock);
1603 lock_ObtainWrite(&volp->rw);
1605 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1606 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1608 /* this volume list was changed */
1610 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1612 lock_ReleaseWrite(&volp->rw);
1613 lock_ObtainRead(&cm_volumeLock);
1616 lock_ReleaseRead(&cm_volumeLock);
1619 /* dump all volumes that have reference count > 0 to a file.
1620 * cookie is used to identify this batch for easy parsing,
1621 * and it a string provided by a caller
1623 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1630 lock_ObtainRead(&cm_scacheLock);
1631 lock_ObtainRead(&cm_volumeLock);
1634 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n",
1635 cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1636 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1638 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1641 char *srvStr = NULL;
1642 afs_uint32 srvStrRpc = TRUE;
1646 if (volp->cbServerpRO) {
1647 if (!((volp->cbServerpRO->flags & CM_SERVERFLAG_UUID) &&
1648 UuidToString((UUID *)&volp->cbServerpRO->uuid, &srvStr) == RPC_S_OK)) {
1649 srvStr = malloc(16);
1651 afs_inet_ntoa_r(volp->cbServerpRO->addr.sin_addr.s_addr, srvStr);
1655 if (volp->cbExpiresRO) {
1656 t = volp->cbExpiresRO;
1660 cbt[strlen(cbt)-1] = '\0';
1663 if (volp->creationDateRO) {
1664 t = volp->creationDateRO;
1667 cdrot = strdup(cdrot);
1668 cdrot[strlen(cdrot)-1] = '\0';
1673 "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x:%x "
1674 "cbServerpRO='%s' cbExpiresRO='%s' creationDateRO='%s' refCount=%u\r\n",
1675 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID,
1676 volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags, volp->qflags,
1677 srvStr ? srvStr : "<none>", cbt ? cbt : "<none>", cdrot ? cdrot : "<none>",
1679 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1683 RpcStringFree(&srvStr);
1692 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1693 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1696 lock_ReleaseRead(&cm_volumeLock);
1697 lock_ReleaseRead(&cm_scacheLock);
1704 * String hash function used by SDBM project.
1705 * It was chosen because it is fast and provides
1708 afs_uint32 SDBMHash(const char * str)
1710 afs_uint32 hash = 0;
1716 for(i = 0, len = strlen(str); i < len; i++)
1718 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1721 return (hash & 0x7FFFFFFF);
1724 /* call with volume write-locked and mutex held */
1725 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1729 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
1732 i = CM_VOLUME_NAME_HASH(volp->namep);
1734 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1735 cm_data.volumeNameHashTablep[i] = volp;
1736 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_HASH);
1739 /* call with volume write-locked and mutex held */
1740 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1742 cm_volume_t **lvolpp;
1746 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1747 /* hash it out first */
1748 i = CM_VOLUME_NAME_HASH(volp->namep);
1749 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1751 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1752 if (tvolp == volp) {
1753 *lvolpp = volp->nameNextp;
1754 _InterlockedAnd(&volp->qflags, ~CM_VOLUME_QFLAG_IN_HASH);
1755 volp->nameNextp = NULL;
1762 /* call with volume write-locked and mutex held */
1763 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1766 struct cm_vol_state * statep;
1768 statep = cm_VolumeStateByType(volp, volType);
1770 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH)
1773 i = CM_VOLUME_ID_HASH(statep->ID);
1777 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1778 cm_data.volumeRWIDHashTablep[i] = volp;
1781 statep->nextp = cm_data.volumeROIDHashTablep[i];
1782 cm_data.volumeROIDHashTablep[i] = volp;
1785 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1786 cm_data.volumeBKIDHashTablep[i] = volp;
1789 _InterlockedOr(&statep->qflags, CM_VOLUME_QFLAG_IN_HASH);
1793 /* call with volume write-locked and mutex held */
1794 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1796 cm_volume_t **lvolpp;
1798 struct cm_vol_state * statep;
1801 statep = cm_VolumeStateByType(volp, volType);
1803 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1804 /* hash it out first */
1805 i = CM_VOLUME_ID_HASH(statep->ID);
1809 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1810 tvolp = cm_data.volumeRWIDHashTablep[i];
1813 lvolpp = &cm_data.volumeROIDHashTablep[i];
1814 tvolp = cm_data.volumeROIDHashTablep[i];
1817 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1818 tvolp = cm_data.volumeBKIDHashTablep[i];
1821 osi_assertx(0, "invalid volume type");
1824 if (tvolp == volp) {
1825 *lvolpp = statep->nextp;
1826 _InterlockedAnd(&statep->qflags, ~CM_VOLUME_QFLAG_IN_HASH);
1827 statep->nextp = NULL;
1831 lvolpp = &tvolp->vol[volType].nextp;
1832 tvolp = tvolp->vol[volType].nextp;
1837 /* must be called with cm_volumeLock write-locked! */
1838 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1840 lock_AssertWrite(&cm_volumeLock);
1842 if (volp == cm_data.volumeLRUFirstp)
1845 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1846 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1847 osi_QAddH((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1848 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1850 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1853 /* must be called with cm_volumeLock write-locked! */
1854 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1856 lock_AssertWrite(&cm_volumeLock);
1858 if (volp == cm_data.volumeLRULastp)
1861 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1862 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1863 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1864 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1866 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1869 /* must be called with cm_volumeLock write-locked! */
1870 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1872 lock_AssertWrite(&cm_volumeLock);
1874 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) {
1875 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1876 _InterlockedAnd(&volp->qflags, ~CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1879 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1882 static char * volstatus_str(enum volstatus vs)
1898 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1900 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1903 if (volID == volp->vol[RWVOL].ID)
1905 else if (volID == volp->vol[ROVOL].ID)
1907 else if (volID == volp->vol[BACKVOL].ID)
1911 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1913 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1914 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1916 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1919 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1921 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1923 return statep->state;
1928 /* Renew .readonly volume callbacks that are more than
1929 * 30 minutes old. (A volume callback is issued for 2 hours.)
1932 cm_VolumeRenewROCallbacks(void)
1935 time_t minexp = time(NULL) + 90 * 60;
1936 extern int daemon_ShutdownFlag;
1937 extern int powerStateSuspended;
1939 lock_ObtainRead(&cm_volumeLock);
1940 for (volp = cm_data.allVolumesp;
1941 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1942 volp=volp->allNextp) {
1943 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1948 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1952 lock_ReleaseRead(&cm_volumeLock);
1953 if (cm_GetSCache(&fid, NULL, &scp, cm_rootUserp, &req) == 0) {
1954 lock_ObtainWrite(&scp->rw);
1955 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1956 lock_ReleaseWrite(&scp->rw);
1957 cm_ReleaseSCache(scp);
1959 lock_ObtainRead(&cm_volumeLock);
1962 lock_ReleaseRead(&cm_volumeLock);
1966 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1968 return &volp->vol[volType];
1972 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1974 cm_vol_state_t * statep = NULL;
1976 if (id == volp->vol[RWVOL].ID)
1977 statep = &volp->vol[RWVOL];
1978 else if (id == volp->vol[ROVOL].ID)
1979 statep = &volp->vol[ROVOL];
1980 else if (id == volp->vol[BACKVOL].ID)
1981 statep = &volp->vol[BACKVOL];
1987 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1989 size_t len = strlen(volname);
1990 cm_vol_state_t *statep;
1992 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1993 statep = &volp->vol[ROVOL];
1994 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1995 statep = &volp->vol[BACKVOL];
1997 statep = &volp->vol[RWVOL];
2003 cm_VolumeType(cm_volume_t *volp, afs_uint32 id)
2005 if (id == volp->vol[RWVOL].ID)
2007 else if (id == volp->vol[ROVOL].ID)
2009 else if (id == volp->vol[BACKVOL].ID)
2016 cm_ChecksumVolumeServerList(struct cm_fid *fidp, cm_user_t *userp, cm_req_t *reqp)
2020 afs_uint32 replicated;
2021 cm_serverRef_t **serverspp;
2023 code = cm_GetServerList(fidp, userp, reqp, &replicated, &serverspp);
2025 cksum = cm_ChecksumServerList(*serverspp);
2026 cm_FreeServerList(serverspp, 0);
2032 cm_IsVolumeReplicated(cm_fid_t *fidp)
2034 afs_int32 replicated = 0;
2036 cm_vol_state_t * volstatep;
2038 volp = cm_GetVolumeByFID(fidp);
2040 volstatep = cm_VolumeStateByID(volp, fidp->volume);
2041 replicated = (volstatep->flags & CM_VOL_STATE_FLAG_REPLICATED);