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>
25 osi_rwlock_t cm_volumeLock;
28 cm_ValidateVolume(void)
33 for (volp = cm_data.allVolumesp, count = 0; volp; volp=volp->allNextp, count++) {
34 if ( volp->magic != CM_VOLUME_MAGIC ) {
35 afsi_log("cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC");
36 fprintf(stderr, "cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC\n");
39 if ( volp->cellp && volp->cellp->magic != CM_CELL_MAGIC ) {
40 afsi_log("cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC");
41 fprintf(stderr, "cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC\n");
44 if ( volp->allNextp && volp->allNextp->magic != CM_VOLUME_MAGIC ) {
45 afsi_log("cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC");
46 fprintf(stderr, "cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC\n");
49 if ( count != 0 && volp == cm_data.allVolumesp ||
50 count > cm_data.maxVolumes ) {
51 afsi_log("cm_ValidateVolume failure: cm_data.allVolumep loop detected");
52 fprintf(stderr, "cm_ValidateVolume failure: cm_data.allVolumep loop detected\n");
57 if ( count != cm_data.currentVolumes ) {
58 afsi_log("cm_ValidateVolume failure: count != cm_data.currentVolumes");
59 fprintf(stderr, "cm_ValidateVolume failure: count != cm_data.currentVolumes\n");
67 cm_ShutdownVolume(void)
71 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
73 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
74 if (volp->vol[volType].ID)
75 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
77 volp->cbExpiresRO = 0;
78 volp->cbServerpRO = NULL;
79 lock_FinalizeRWLock(&volp->rw);
85 void cm_InitVolume(int newFile, long maxVols)
87 static osi_once_t once;
89 if (osi_Once(&once)) {
90 lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock", LOCK_HIERARCHY_VOLUME_GLOBAL);
93 cm_data.allVolumesp = NULL;
94 cm_data.currentVolumes = 0;
95 cm_data.maxVolumes = maxVols;
96 memset(cm_data.volumeNameHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
97 memset(cm_data.volumeRWIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
98 memset(cm_data.volumeROIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
99 memset(cm_data.volumeBKIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
100 cm_data.volumeLRUFirstp = cm_data.volumeLRULastp = NULL;
104 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
107 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
108 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
109 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_UPDATING_VL);
110 volp->lastUpdateTime = 0;
111 for (volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
112 volp->vol[volType].state = vl_unknown;
113 volp->vol[volType].serversp = NULL;
114 if (volp->vol[volType].ID)
115 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, vl_unknown, volp->vol[volType].state);
117 volp->cbExpiresRO = 0;
118 volp->cbServerpRO = NULL;
126 /* returns true if the id is a decimal integer, in which case we interpret it
127 * as an id. make the cache manager much simpler.
128 * Stolen from src/volser/vlprocs.c */
130 cm_VolNameIsID(char *aname)
133 while (tc = *aname++) {
134 if (tc > '9' || tc < '0')
142 * Update a volume. Caller holds a write lock on the volume (volp->rw).
145 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
146 * Yes, we support multihomed fileservers.
147 * Since before we got the code from IBM.
148 * But to find out about multiple addresses on a multihomed server, you need
149 * to use VL_GetEntryByNameU and VL_GetAddrsU. If you use
150 * VL_GetEntryByNameO or VL_GetEntryByNameN, the vlserver just gives you one
151 * address per server.
152 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:39 (JHutz)
153 * see src/afs/afs_volume.c, paying particular attention to
154 * afs_NewVolumeByName, afs_SetupVolume, and InstallUVolumeEntry
155 * shadow / openafs / jaltman {ANDREW.CMU.EDU} 01:40 (Jeffrey Altman)
156 * thanks. The windows client calls the 0 versions.
157 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:51 (JHutz)
159 * By not using the N versions, you only get up to 8 sites instead of 13.
160 * By not using the U versions, you don't get to know about multihomed serve
161 * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:52 (JHutz)
162 * Of course, you probably want to support the older versions for backward
163 * compatibility. If you do that, you need to call the newest interface
164 * first, and fall back to successively older versions if you get
168 long cm_UpdateVolumeLocation(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
174 cm_serverRef_t *tsrp;
176 struct sockaddr_in tsockAddr;
179 struct vldbentry vldbEntry;
180 struct nvldbentry nvldbEntry;
182 struct uvldbentry uvldbEntry;
187 enum volstatus rwNewstate = vl_online;
188 enum volstatus roNewstate = vl_online;
189 enum volstatus bkNewstate = vl_online;
190 #ifdef AFS_FREELANCE_CLIENT
196 lock_AssertWrite(&volp->rw);
199 * If the last volume update was in the last five
200 * minutes and it did not exist, then avoid the RPC
201 * and return No Such Volume immediately.
204 if ((volp->flags & CM_VOLUMEFLAG_NOEXIST) &&
205 (now < volp->lastUpdateTime + 600))
207 return CM_ERROR_NOSUCHVOLUME;
210 #ifdef AFS_FREELANCE_CLIENT
211 if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->vol[RWVOL].ID == AFS_FAKE_ROOT_VOL_ID )
214 memset(&vldbEntry, 0, sizeof(vldbEntry));
215 vldbEntry.flags |= VLF_RWEXISTS;
216 vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
222 while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
223 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation sleeping name %s:%s flags 0x%x",
224 volp->cellp->name, volp->namep, volp->flags);
225 osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
226 lock_ObtainWrite(&volp->rw);
227 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation awake name %s:%s flags 0x%x",
228 volp->cellp->name, volp->namep, volp->flags);
229 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
230 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation nothing to do, waking others name %s:%s flags 0x%x",
231 volp->cellp->name, volp->namep, volp->flags);
232 osi_Wakeup((LONG_PTR) &volp->flags);
238 /* Do not query again if the last update attempt failed in the last 60 seconds */
239 if ((volp->flags & CM_VOLUMEFLAG_RESET) && (volp->lastUpdateTime > now - 60))
241 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation unsuccessful update in last 60 seconds -- name %s:%s flags 0x%x",
242 volp->cellp->name, volp->namep, volp->flags);
243 return(CM_ERROR_ALLDOWN);
246 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_UPDATING_VL);
247 lock_ReleaseWrite(&volp->rw);
249 if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
250 cm_UpdateCell(cellp, 0);
252 /* now we have volume structure locked and held; make RPC to fill it */
253 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
254 osi_LogSaveString(afsd_logp,volp->cellp->name),
255 osi_LogSaveString(afsd_logp,volp->namep));
257 struct rx_connection * rxconnp;
259 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
263 rxconnp = cm_GetRxConn(connp);
265 code = VL_GetEntryByNameU(rxconnp, volp->namep, &uvldbEntry);
267 if ( code == RXGEN_OPCODE )
270 code = VL_GetEntryByNameN(rxconnp, volp->namep, &nvldbEntry);
273 if ( code == RXGEN_OPCODE ) {
274 code = VL_GetEntryByNameO(rxconnp, volp->namep, &vldbEntry);
277 rx_PutConnection(rxconnp);
278 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
279 code = cm_MapVLRPCError(code, reqp);
281 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
282 osi_LogSaveString(afsd_logp,volp->cellp->name),
283 osi_LogSaveString(afsd_logp,volp->namep), code);
285 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
286 osi_LogSaveString(afsd_logp,volp->cellp->name),
287 osi_LogSaveString(afsd_logp,volp->namep));
290 /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
291 * does not exist and is not a numeric string but there might exist a .readonly volume.
292 * If the base name doesn't exist we will not care about the .backup that might be left
293 * behind since there should be no method to access it.
295 if (code == CM_ERROR_NOSUCHVOLUME &&
296 _atoi64(volp->namep) == 0 &&
297 volp->vol[RWVOL].ID == 0 &&
298 strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
299 char name[VL_MAXNAMELEN];
301 snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
303 /* now we have volume structure locked and held; make RPC to fill it */
304 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
305 osi_LogSaveString(afsd_logp,volp->cellp->name),
306 osi_LogSaveString(afsd_logp,name));
308 struct rx_connection * rxconnp;
310 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
314 rxconnp = cm_GetRxConn(connp);
316 code = VL_GetEntryByNameU(connp->rxconnp, name, &uvldbEntry);
318 if ( code == RXGEN_OPCODE )
321 code = VL_GetEntryByNameN(connp->rxconnp, name, &nvldbEntry);
324 if ( code == RXGEN_OPCODE ) {
325 code = VL_GetEntryByNameO(connp->rxconnp, name, &vldbEntry);
328 rx_PutConnection(rxconnp);
329 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
330 code = cm_MapVLRPCError(code, reqp);
332 osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
333 osi_LogSaveString(afsd_logp,volp->cellp->name),
334 osi_LogSaveString(afsd_logp,name), code);
336 osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
337 osi_LogSaveString(afsd_logp,volp->cellp->name),
338 osi_LogSaveString(afsd_logp,name));
341 lock_ObtainWrite(&volp->rw);
348 afs_int32 serverNumber[NMAXNSERVERS];
349 afs_int32 serverFlags[NMAXNSERVERS];
350 afsUUID serverUUID[NMAXNSERVERS];
351 afs_int32 rwServers_alldown = 1;
352 afs_int32 roServers_alldown = 1;
353 afs_int32 bkServers_alldown = 1;
354 char name[VL_MAXNAMELEN];
356 #ifdef AFS_FREELANCE_CLIENT
358 rwServers_alldown = 0;
361 /* clear out old bindings */
362 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
363 if (volp->vol[volType].serversp)
364 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
367 memset(serverUUID, 0, sizeof(serverUUID));
371 flags = vldbEntry.flags;
372 nServers = vldbEntry.nServers;
373 rwID = vldbEntry.volumeId[0];
374 roID = vldbEntry.volumeId[1];
375 bkID = vldbEntry.volumeId[2];
376 for ( i=0; i<nServers; i++ ) {
377 serverFlags[i] = vldbEntry.serverFlags[i];
378 serverNumber[i] = vldbEntry.serverNumber[i];
380 strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
381 name[VL_MAXNAMELEN - 1] = '\0';
384 flags = nvldbEntry.flags;
385 nServers = nvldbEntry.nServers;
386 rwID = nvldbEntry.volumeId[0];
387 roID = nvldbEntry.volumeId[1];
388 bkID = nvldbEntry.volumeId[2];
389 for ( i=0; i<nServers; i++ ) {
390 serverFlags[i] = nvldbEntry.serverFlags[i];
391 serverNumber[i] = nvldbEntry.serverNumber[i];
393 strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
394 name[VL_MAXNAMELEN - 1] = '\0';
398 flags = uvldbEntry.flags;
399 nServers = uvldbEntry.nServers;
400 rwID = uvldbEntry.volumeId[0];
401 roID = uvldbEntry.volumeId[1];
402 bkID = uvldbEntry.volumeId[2];
403 for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
404 if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
405 serverFlags[j] = uvldbEntry.serverFlags[i];
406 serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
409 afs_uint32 * addrp, nentries, code, unique;
411 ListAddrByAttributes attrs;
414 memset(&attrs, 0, sizeof(attrs));
415 attrs.Mask = VLADDR_UUID;
416 attrs.uuid = uvldbEntry.serverNumber[i];
417 memset(&uuid, 0, sizeof(uuid));
418 memset(&addrs, 0, sizeof(addrs));
421 struct rx_connection *rxconnp;
423 code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
427 rxconnp = cm_GetRxConn(connp);
428 code = VL_GetAddrsU(rxconnp, &attrs, &uuid, &unique, &nentries, &addrs);
429 rx_PutConnection(rxconnp);
430 } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
433 code = cm_MapVLRPCError(code, reqp);
434 osi_Log2(afsd_logp, "CALL VL_GetAddrsU serverNumber %u FAILURE, code 0x%x",
438 osi_Log1(afsd_logp, "CALL VL_GetAddrsU serverNumber %u SUCCESS", i);
440 addrp = addrs.bulkaddrs_val;
441 for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
442 serverFlags[j] = uvldbEntry.serverFlags[i];
443 serverNumber[j] = addrp[k];
444 serverUUID[j] = uuid;
447 xdr_free((xdrproc_t) xdr_bulkaddrs, &addrs);
450 code = CM_ERROR_INVAL;
453 nServers = j; /* update the server count */
454 strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
455 name[VL_MAXNAMELEN - 1] = '\0';
460 /* decode the response */
461 lock_ObtainWrite(&cm_volumeLock);
462 if (cm_VolNameIsID(volp->namep)) {
467 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
468 name[len - 7] = '\0';
469 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
470 name[len - 9] = '\0';
473 osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
474 osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
476 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
477 cm_RemoveVolumeFromNameHashTable(volp);
479 strcpy(volp->namep, name);
481 cm_AddVolumeToNameHashTable(volp);
484 if (flags & VLF_DFSFILESET) {
485 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_DFS_VOLUME);
486 osi_Log1(afsd_logp, "cm_UpdateVolume Volume Group '%s' is a DFS File Set. Correct behavior is not implemented.",
487 osi_LogSaveString(afsd_logp, volp->namep));
490 if (flags & VLF_RWEXISTS) {
491 if (volp->vol[RWVOL].ID != rwID) {
492 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
493 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
494 volp->vol[RWVOL].ID = rwID;
495 cm_AddVolumeToIDHashTable(volp, RWVOL);
498 if (volp->vol[RWVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
499 cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
500 volp->vol[RWVOL].ID = 0;
502 if (flags & VLF_ROEXISTS) {
503 if (volp->vol[ROVOL].ID != roID) {
504 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
505 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
506 volp->vol[ROVOL].ID = roID;
507 cm_AddVolumeToIDHashTable(volp, ROVOL);
510 if (volp->vol[ROVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
511 cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
512 volp->vol[ROVOL].ID = 0;
514 if (flags & VLF_BACKEXISTS) {
515 if (volp->vol[BACKVOL].ID != bkID) {
516 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
517 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
518 volp->vol[BACKVOL].ID = bkID;
519 cm_AddVolumeToIDHashTable(volp, BACKVOL);
522 if (volp->vol[BACKVOL].qflags & CM_VOLUME_QFLAG_IN_HASH)
523 cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
524 volp->vol[BACKVOL].ID = 0;
526 lock_ReleaseWrite(&cm_volumeLock);
527 for (i=0; i<nServers; i++) {
528 /* create a server entry */
529 tflags = serverFlags[i];
530 if (tflags & VLSF_DONTUSE)
532 tsockAddr.sin_port = htons(7000);
533 tsockAddr.sin_family = AF_INET;
534 tempAddr = htonl(serverNumber[i]);
535 tsockAddr.sin_addr.s_addr = tempAddr;
536 tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE, FALSE);
538 if (tsp && (method == 2) && (tsp->flags & CM_SERVERFLAG_UUID)) {
540 * Check to see if the uuid of the server we know at this address
541 * matches the uuid of the server we are being told about by the
542 * vlserver. If not, ...?
544 if (!afs_uuid_equal(&serverUUID[i], &tsp->uuid)) {
545 char uuid1[128], uuid2[128];
548 afsUUID_to_string(&serverUUID[i], uuid1, sizeof(uuid1));
549 afsUUID_to_string(&tsp->uuid, uuid2, sizeof(uuid2));
550 afs_inet_ntoa_r(serverNumber[i], hoststr);
552 osi_Log3(afsd_logp, "cm_UpdateVolumeLocation UUIDs do not match! %s != %s (%s)",
553 osi_LogSaveString(afsd_logp, uuid1),
554 osi_LogSaveString(afsd_logp, uuid2),
555 osi_LogSaveString(afsd_logp, hoststr));
561 * cm_NewServer will probe the file server which in turn will
562 * update the state on the volume group object. Do not probe
563 * in this thread. It will block the thread and can result in
564 * a recursive call to cm_UpdateVolumeLocation().
566 lock_ReleaseWrite(&volp->rw);
567 tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, &serverUUID[i], CM_FLAG_NOPROBE);
568 lock_ObtainWrite(&volp->rw);
570 osi_assertx(tsp != NULL, "null cm_server_t");
573 * if this server was created by fs setserverprefs
574 * then it won't have either a cell assignment or
579 if ( (method == 2) && !(tsp->flags & CM_SERVERFLAG_UUID) &&
580 !afs_uuid_is_nil(&serverUUID[i])) {
581 tsp->uuid = serverUUID[i];
582 _InterlockedOr(&tsp->flags, CM_SERVERFLAG_UUID);
585 /* and add it to the list(s). */
587 * Each call to cm_NewServerRef() increments the
588 * ref count of tsp. These reference will be dropped,
589 * if and when the volume is reset; see reset code
590 * earlier in this function.
592 if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
593 tsrp = cm_NewServerRef(tsp, rwID);
594 cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
595 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
596 rwServers_alldown = 0;
598 if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
599 tsrp = cm_NewServerRef(tsp, roID);
600 cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
603 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
604 roServers_alldown = 0;
606 /* We don't use VLSF_BACKVOL !?! */
607 /* Because only the backup on the server holding the RW
608 * volume can be valid. This check prevents errors if a
609 * RW is moved but the old backup is not removed.
611 if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
612 tsrp = cm_NewServerRef(tsp, bkID);
613 cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
615 if (!(tsp->flags & CM_SERVERFLAG_DOWN))
616 bkServers_alldown = 0;
618 /* Drop the reference obtained by cm_FindServer() */
625 * If the first n servers have the same ipRank, then we
626 * randomly pick one among them and move it to the beginning.
627 * We don't bother to re-order the whole list because
628 * the rest of the list is used only if the first server is
629 * down. We only do this for the RO list; we assume the other
630 * lists are length 1.
633 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
636 rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
637 roNewstate = roServers_alldown ? vl_alldown : vl_online;
638 bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
640 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_NOEXIST);
641 } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
642 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_NOEXIST);
644 rwNewstate = roNewstate = bkNewstate = vl_alldown;
647 if (volp->vol[RWVOL].state != rwNewstate) {
648 if (volp->vol[RWVOL].ID)
649 cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
650 volp->vol[RWVOL].state = rwNewstate;
652 if (volp->vol[ROVOL].state != roNewstate) {
653 if (volp->vol[ROVOL].ID)
654 cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
655 volp->vol[ROVOL].state = roNewstate;
657 if (volp->vol[BACKVOL].state != bkNewstate) {
658 if (volp->vol[BACKVOL].ID)
659 cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
660 volp->vol[BACKVOL].state = bkNewstate;
663 volp->lastUpdateTime = time(NULL);
666 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_RESET);
668 _InterlockedAnd(&volp->flags, ~CM_VOLUMEFLAG_UPDATING_VL);
669 osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
670 osi_LogSaveString(afsd_logp,volp->cellp->name),
671 osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
672 osi_Wakeup((LONG_PTR) &volp->flags);
677 /* Requires read or write lock on cm_volumeLock */
678 void cm_GetVolume(cm_volume_t *volp)
680 InterlockedIncrement(&volp->refCount);
683 cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
688 lock_ObtainRead(&cm_volumeLock);
689 hash = CM_VOLUME_ID_HASH(fidp->volume);
690 /* The volumeID can be any one of the three types. So we must
691 * search the hash table for all three types until we find it.
692 * We will search in the order of RO, RW, BK.
694 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
695 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
700 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
701 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
707 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
708 if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
713 /* hold the volume if we found it */
717 lock_ReleaseRead(&cm_volumeLock);
721 long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
722 cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
725 #ifdef SEARCH_ALL_VOLUMES
728 char volNameString[VL_MAXNAMELEN];
732 lock_ObtainRead(&cm_volumeLock);
733 #ifdef SEARCH_ALL_VOLUMES
734 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
735 if (cellp == volp->cellp &&
736 ((unsigned) volumeID == volp->vol[RWVOL].ID ||
737 (unsigned) volumeID == volp->vol[ROVOL].ID ||
738 (unsigned) volumeID == volp->vol[BACKVOL].ID))
743 #endif /* SEARCH_ALL_VOLUMES */
745 hash = CM_VOLUME_ID_HASH(volumeID);
746 /* The volumeID can be any one of the three types. So we must
747 * search the hash table for all three types until we find it.
748 * We will search in the order of RO, RW, BK.
750 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
751 if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
756 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
757 if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
763 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
764 if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
769 #ifdef SEARCH_ALL_VOLUMES
770 osi_assertx(volp == volp2, "unexpected cm_vol_t");
773 /* hold the volume if we found it */
777 lock_ReleaseRead(&cm_volumeLock);
781 lock_ObtainWrite(&volp->rw);
784 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
785 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
787 lock_ReleaseWrite(&volp->rw);
791 if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
792 lock_ObtainWrite(&cm_volumeLock);
793 cm_AdjustVolumeLRU(volp);
794 lock_ReleaseWrite(&cm_volumeLock);
797 lock_ObtainRead(&cm_volumeLock);
799 lock_ReleaseRead(&cm_volumeLock);
804 /* otherwise, we didn't find it so consult the VLDB */
805 sprintf(volNameString, "%u", volumeID);
806 code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
807 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
809 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
810 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
811 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
814 code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp,
815 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
822 long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
823 struct cm_user *userp, struct cm_req *reqp,
824 afs_uint32 flags, cm_volume_t **outVolpp)
827 #ifdef SEARCH_ALL_VOLUMES
831 char name[VL_MAXNAMELEN];
836 strncpy(name, volumeNamep, VL_MAXNAMELEN);
837 name[VL_MAXNAMELEN-1] = '\0';
840 if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
842 name[len - 7] = '\0';
843 } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
845 name[len - 9] = '\0';
850 lock_ObtainRead(&cm_volumeLock);
851 #ifdef SEARCH_ALL_VOLUMES
852 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
853 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
858 #endif /* SEARCH_ALL_VOLUMES */
860 hash = CM_VOLUME_NAME_HASH(name);
861 for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
862 if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
866 #ifdef SEARCH_ALL_VOLUMES
867 osi_assertx(volp2 == volp, "unexpected cm_vol_t");
870 if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
872 /* otherwise, get from VLDB */
875 * Change to a write lock so that we have exclusive use of
876 * the first cm_volume_t with a refCount of 0 so that we
877 * have time to increment it.
879 lock_ConvertRToW(&cm_volumeLock);
881 if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
882 #ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
883 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
884 if ( volp->refCount == 0 ) {
885 /* There is one we can re-use */
890 for ( volp = cm_data.volumeLRULastp;
892 volp = (cm_volume_t *) osi_QPrev(&volp->q))
894 if ( volp->refCount == 0 ) {
895 /* There is one we can re-use */
901 osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
903 InterlockedIncrement(&volp->refCount);
904 lock_ReleaseWrite(&cm_volumeLock);
905 lock_ObtainWrite(&volp->rw);
906 lock_ObtainWrite(&cm_volumeLock);
908 osi_Log2(afsd_logp, "Recycling Volume %s:%s",
909 volp->cellp->name, volp->namep);
911 /* The volp is removed from the LRU queue in order to
912 * prevent two threads from attempting to recycle the
913 * same object. This volp must be re-inserted back into
914 * the LRU queue before this function exits.
916 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
917 cm_RemoveVolumeFromLRU(volp);
918 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
919 cm_RemoveVolumeFromNameHashTable(volp);
921 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
922 if (volp->vol[volType].qflags & CM_VOLUME_QFLAG_IN_HASH)
923 cm_RemoveVolumeFromIDHashTable(volp, volType);
924 if (volp->vol[volType].ID)
925 cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
926 volp->vol[volType].ID = 0;
927 cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
928 lock_ReleaseWrite(&cm_volumeLock);
929 cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
930 lock_ObtainWrite(&cm_volumeLock);
933 volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
934 memset(volp, 0, sizeof(cm_volume_t));
935 volp->magic = CM_VOLUME_MAGIC;
936 volp->allNextp = cm_data.allVolumesp;
937 cm_data.allVolumesp = volp;
938 lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
939 lock_ReleaseWrite(&cm_volumeLock);
940 lock_ObtainWrite(&volp->rw);
941 lock_ObtainWrite(&cm_volumeLock);
942 volp->refCount = 1; /* starts off held */
945 strncpy(volp->namep, name, VL_MAXNAMELEN);
946 volp->namep[VL_MAXNAMELEN-1] = '\0';
947 volp->flags = CM_VOLUMEFLAG_RESET;
948 volp->lastUpdateTime = 0;
950 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
951 volp->vol[volType].state = vl_unknown;
952 volp->vol[volType].nextp = NULL;
953 volp->vol[volType].flags = 0;
955 volp->cbExpiresRO = 0;
956 volp->cbServerpRO = NULL;
957 volp->creationDateRO = 0;
958 cm_AddVolumeToNameHashTable(volp);
959 lock_ReleaseWrite(&cm_volumeLock);
964 lock_ReleaseRead(&cm_volumeLock);
967 return CM_ERROR_NOSUCHVOLUME;
969 lock_ObtainWrite(&volp->rw);
972 /* if we get here we are holding the mutex */
973 if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
974 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
976 lock_ReleaseWrite(&volp->rw);
978 if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
979 type == ROVOL && volp->vol[ROVOL].ID == 0))
980 code = CM_ERROR_NOSUCHVOLUME;
985 lock_ObtainWrite(&cm_volumeLock);
986 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
987 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
988 cm_AdjustVolumeLRU(volp);
989 lock_ReleaseWrite(&cm_volumeLock);
992 * do not return it to the caller but do insert it in the LRU
993 * otherwise it will be lost
995 lock_ObtainWrite(&cm_volumeLock);
996 if (!(volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) ||
997 (flags & CM_GETVOL_FLAG_NO_LRU_UPDATE))
998 cm_AdjustVolumeLRU(volp);
1000 lock_ReleaseWrite(&cm_volumeLock);
1003 if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
1004 !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
1005 cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
1008 code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
1009 flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
1016 * Only call this function in response to a VNOVOL or VMOVED error
1017 * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
1018 * as that can lead to recursive calls.
1020 long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
1024 #ifdef SEARCH_ALL_VOLUMES
1031 return CM_ERROR_INVAL;
1033 cellp = cm_FindCellByID(fidp->cell, 0);
1035 return CM_ERROR_NOSUCHCELL;
1037 /* search for the volume */
1038 lock_ObtainRead(&cm_volumeLock);
1039 #ifdef SEARCH_ALL_VOLUMES
1040 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1041 if (cellp == volp->cellp &&
1042 (fidp->volume == volp->vol[RWVOL].ID ||
1043 fidp->volume == volp->vol[ROVOL].ID ||
1044 fidp->volume == volp->vol[BACKVOL].ID))
1047 #endif /* SEARCH_ALL_VOLUMES */
1049 hash = CM_VOLUME_ID_HASH(fidp->volume);
1050 /* The volumeID can be any one of the three types. So we must
1051 * search the hash table for all three types until we find it.
1052 * We will search in the order of RO, RW, BK.
1054 for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
1055 if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
1059 /* try RW volumes */
1060 for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
1061 if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
1066 /* try BK volumes */
1067 for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
1068 if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
1073 #ifdef SEARCH_ALL_VOLUMES
1074 osi_assertx(volp == volp2, "unexpected cm_vol_t");
1076 /* hold the volume if we found it */
1080 lock_ReleaseRead(&cm_volumeLock);
1083 return CM_ERROR_NOSUCHVOLUME;
1086 cm_data.mountRootGen = time(NULL);
1087 lock_ObtainWrite(&volp->rw);
1088 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1089 volp->lastUpdateTime = 0;
1091 code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
1092 lock_ReleaseWrite(&volp->rw);
1094 lock_ObtainRead(&cm_volumeLock);
1096 lock_ReleaseRead(&cm_volumeLock);
1101 /* find the appropriate servers from a volume */
1102 cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume, cm_user_t *userp, cm_req_t *reqp)
1104 cm_serverRef_t **serverspp;
1105 cm_serverRef_t *current;
1109 lock_ObtainWrite(&cm_serverLock);
1111 if (volume == volp->vol[RWVOL].ID)
1112 serverspp = &volp->vol[RWVOL].serversp;
1113 else if (volume == volp->vol[ROVOL].ID)
1114 serverspp = &volp->vol[ROVOL].serversp;
1115 else if (volume == volp->vol[BACKVOL].ID)
1116 serverspp = &volp->vol[BACKVOL].serversp;
1118 lock_ReleaseWrite(&cm_serverLock);
1122 lock_ObtainWrite(&volp->rw);
1123 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1124 volp->lastUpdateTime = 0;
1125 code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
1126 lock_ReleaseWrite(&volp->rw);
1134 * Increment the refCount on deleted items as well.
1135 * They will be freed by cm_FreeServerList when they get to zero
1137 for (current = *serverspp; current; current = current->next)
1138 cm_GetServerRef(current, TRUE);
1140 lock_ReleaseWrite(&cm_serverLock);
1145 void cm_PutVolume(cm_volume_t *volp)
1147 afs_int32 refCount = InterlockedDecrement(&volp->refCount);
1148 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
1151 /* return the read-only volume, if there is one, or the read-write volume if
1154 long cm_GetROVolumeID(cm_volume_t *volp)
1158 lock_ObtainRead(&volp->rw);
1159 if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
1160 id = volp->vol[ROVOL].ID;
1162 id = volp->vol[RWVOL].ID;
1163 lock_ReleaseRead(&volp->rw);
1168 void cm_RefreshVolumes(int lifetime)
1176 /* force mount point target updates */
1177 if (cm_data.mountRootGen + lifetime <= now)
1178 cm_data.mountRootGen = now;
1181 * force a re-loading of volume data from the vldb
1182 * if the lifetime for the cached data has expired
1184 lock_ObtainRead(&cm_volumeLock);
1185 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
1186 InterlockedIncrement(&volp->refCount);
1187 lock_ReleaseRead(&cm_volumeLock);
1189 if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
1190 lock_ObtainWrite(&volp->rw);
1191 if (volp->lastUpdateTime + lifetime <= now) {
1192 _InterlockedOr(&volp->flags, CM_VOLUMEFLAG_RESET);
1193 volp->lastUpdateTime = 0;
1195 lock_ReleaseWrite(&volp->rw);
1198 lock_ObtainRead(&cm_volumeLock);
1199 refCount = InterlockedDecrement(&volp->refCount);
1200 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1202 lock_ReleaseRead(&cm_volumeLock);
1206 cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
1207 afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
1211 AFSFetchVolumeStatus volStat;
1216 struct rx_connection * rxconnp;
1218 char offLineMsg[256];
1220 long alldown, alldeleted;
1221 cm_serverRef_t *serversp;
1225 OfflineMsg = offLineMsg;
1228 if (statep->ID != 0 && (!volID || volID == statep->ID)) {
1229 /* create fid for volume root so that VNOVOL and VMOVED errors can be processed */
1230 cm_SetFid(&fid, volp->cellp->cellID, statep->ID, 1, 1);
1232 if (!statep->serversp && !(*volumeUpdatedp)) {
1234 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1235 *volumeUpdatedp = 1;
1238 lock_ObtainRead(&cm_serverLock);
1239 if (statep->serversp) {
1242 for (serversp = statep->serversp; serversp; serversp = serversp->next) {
1243 if (serversp->status == srv_deleted)
1250 if (serversp->status == srv_busy || serversp->status == srv_offline)
1251 serversp->status = srv_not_busy;
1253 lock_ReleaseRead(&cm_serverLock);
1255 if (alldeleted && !(*volumeUpdatedp)) {
1257 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1258 *volumeUpdatedp = 1;
1261 if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
1262 (!alldown && statep->state == vl_alldown)) {
1264 req.flags |= CM_REQ_OFFLINE_VOL_CHK;
1266 lock_ReleaseWrite(&volp->rw);
1268 code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
1272 rxconnp = cm_GetRxConn(connp);
1273 code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
1274 &volStat, &Name, &OfflineMsg, &MOTD);
1275 rx_PutConnection(rxconnp);
1276 } while (cm_Analyze(connp, cm_rootUserp, &req, &fid, NULL, NULL, NULL, code));
1277 code = cm_MapRPCError(code, &req);
1279 lock_ObtainWrite(&volp->rw);
1280 if (code == 0 && volStat.Online) {
1281 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
1282 statep->state = vl_online;
1284 } else if (code == CM_ERROR_NOACCESS) {
1285 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
1286 statep->state = vl_unknown;
1289 } else if (alldown && statep->state != vl_alldown) {
1290 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1291 statep->state = vl_alldown;
1294 lock_ReleaseRead(&cm_serverLock);
1295 if (statep->state != vl_alldown) {
1296 cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
1297 statep->state = vl_alldown;
1303 /* The return code is 0 if the volume is not online and
1304 * 1 if the volume is online
1307 cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
1311 afs_uint32 online = 0;
1312 afs_uint32 volumeUpdated = 0;
1314 lock_ObtainWrite(&volp->rw);
1316 if (volp->flags & CM_VOLUMEFLAG_RESET) {
1318 code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
1322 cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
1323 cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
1324 cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
1326 lock_ReleaseWrite(&volp->rw);
1332 * called from the Daemon thread.
1333 * when checking the offline status, check those of the most recently used volumes first.
1335 void cm_CheckOfflineVolumes(void)
1339 extern int daemon_ShutdownFlag;
1340 extern int powerStateSuspended;
1342 lock_ObtainRead(&cm_volumeLock);
1343 for (volp = cm_data.volumeLRULastp;
1344 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1345 volp=(cm_volume_t *) osi_QPrev(&volp->q)) {
1347 * Skip volume entries that did not exist last time
1348 * the vldb was queried. For those entries wait until
1349 * the next actual request is received for the volume
1350 * before checking its state.
1352 if ((volp->qflags & CM_VOLUME_QFLAG_IN_HASH) &&
1353 !(volp->flags & CM_VOLUMEFLAG_NOEXIST)) {
1354 InterlockedIncrement(&volp->refCount);
1355 lock_ReleaseRead(&cm_volumeLock);
1356 cm_CheckOfflineVolume(volp, 0);
1357 lock_ObtainRead(&cm_volumeLock);
1358 refCount = InterlockedDecrement(&volp->refCount);
1359 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1362 lock_ReleaseRead(&cm_volumeLock);
1367 cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
1369 enum volstatus newStatus;
1370 cm_serverRef_t *tsrp;
1372 int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
1375 if (!volp || !statep) {
1382 lock_ObtainWrite(&cm_serverLock);
1383 for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
1385 sprintf(addr, "%d.%d.%d.%d",
1386 ((tsp->addr.sin_addr.s_addr & 0xff)),
1387 ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
1388 ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
1389 ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
1391 if (tsrp->status == srv_deleted) {
1392 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
1393 statep->ID, osi_LogSaveString(afsd_logp,addr));
1397 cm_GetServerNoLock(tsp);
1398 if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
1400 if (tsrp->status == srv_busy) {
1401 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
1402 statep->ID, osi_LogSaveString(afsd_logp,addr));
1405 } else if (tsrp->status == srv_offline) {
1406 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
1407 statep->ID, osi_LogSaveString(afsd_logp,addr));
1411 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
1412 statep->ID, osi_LogSaveString(afsd_logp,addr));
1417 osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s down",
1418 statep->ID, osi_LogSaveString(afsd_logp,addr));
1420 cm_PutServerNoLock(tsp);
1423 lock_ReleaseWrite(&cm_serverLock);
1425 osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
1426 allDown, allBusy, someBusy, someOffline, allOffline);
1429 newStatus = vl_alldown;
1430 else if (allBusy || (someBusy && someOffline))
1431 newStatus = vl_busy;
1432 else if (allOffline)
1433 newStatus = vl_offline;
1435 newStatus = vl_online;
1437 if (statep->ID && statep->state != newStatus)
1438 cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
1440 statep->state = newStatus;
1444 cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1447 if (volp->vol[RWVOL].ID == volID) {
1448 cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
1449 } else if (volp->vol[ROVOL].ID == volID) {
1450 cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
1451 } else if (volp->vol[BACKVOL].ID == volID) {
1452 cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
1455 * If we are called with volID == 0 then something has gone wrong.
1456 * Most likely a race occurred in the server volume list maintenance.
1457 * Since we don't know which volume's status should be updated,
1458 * just update all of them that are known to exist. Better to be
1459 * correct than fast.
1462 for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
1463 if (volp->vol[volType].ID != 0)
1464 cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
1470 ** Finds all volumes that reside on this server and reorders their
1471 ** RO list according to the changed rank of server.
1473 void cm_ChangeRankVolume(cm_server_t *tsp)
1479 /* find volumes which might have RO copy on server*/
1480 lock_ObtainRead(&cm_volumeLock);
1481 for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1483 code = 1 ; /* assume that list is unchanged */
1484 InterlockedIncrement(&volp->refCount);
1485 lock_ReleaseRead(&cm_volumeLock);
1486 lock_ObtainWrite(&volp->rw);
1488 if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
1489 code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
1491 /* this volume list was changed */
1493 cm_RandomizeServer(&volp->vol[ROVOL].serversp);
1495 lock_ReleaseWrite(&volp->rw);
1496 lock_ObtainRead(&cm_volumeLock);
1497 refCount = InterlockedDecrement(&volp->refCount);
1498 osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
1500 lock_ReleaseRead(&cm_volumeLock);
1503 /* dump all volumes that have reference count > 0 to a file.
1504 * cookie is used to identify this batch for easy parsing,
1505 * and it a string provided by a caller
1507 int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
1514 lock_ObtainRead(&cm_scacheLock);
1515 lock_ObtainRead(&cm_volumeLock);
1518 sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n",
1519 cookie, cm_data.currentVolumes, cm_data.maxVolumes);
1520 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1522 for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
1525 char *srvStr = NULL;
1526 afs_uint32 srvStrRpc = TRUE;
1530 if (volp->cbServerpRO) {
1531 if (!((volp->cbServerpRO->flags & CM_SERVERFLAG_UUID) &&
1532 UuidToString((UUID *)&volp->cbServerpRO->uuid, &srvStr) == RPC_S_OK)) {
1533 srvStr = malloc(16);
1535 afs_inet_ntoa_r(volp->cbServerpRO->addr.sin_addr.s_addr, srvStr);
1539 if (volp->cbExpiresRO) {
1540 t = volp->cbExpiresRO;
1544 cbt[strlen(cbt)-1] = '\0';
1547 if (volp->creationDateRO) {
1548 t = volp->creationDateRO;
1551 cdrot = strdup(cdrot);
1552 cdrot[strlen(cdrot)-1] = '\0';
1557 "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x:%x "
1558 "cbServerpRO='%s' cbExpiresRO='%s' creationDateRO='%s' refCount=%u\r\n",
1559 cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID,
1560 volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags, volp->qflags,
1561 srvStr ? srvStr : "<none>", cbt ? cbt : "<none>", cdrot ? cdrot : "<none>",
1563 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1567 RpcStringFree(&srvStr);
1576 sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
1577 WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
1580 lock_ReleaseRead(&cm_volumeLock);
1581 lock_ReleaseRead(&cm_scacheLock);
1588 * String hash function used by SDBM project.
1589 * It was chosen because it is fast and provides
1592 afs_uint32 SDBMHash(const char * str)
1594 afs_uint32 hash = 0;
1600 for(i = 0, len = strlen(str); i < len; i++)
1602 hash = str[i] + (hash << 6) + (hash << 16) - hash;
1605 return (hash & 0x7FFFFFFF);
1608 /* call with volume write-locked and mutex held */
1609 void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
1613 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH)
1616 i = CM_VOLUME_NAME_HASH(volp->namep);
1618 volp->nameNextp = cm_data.volumeNameHashTablep[i];
1619 cm_data.volumeNameHashTablep[i] = volp;
1620 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_HASH);
1623 /* call with volume write-locked and mutex held */
1624 void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
1626 cm_volume_t **lvolpp;
1630 if (volp->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1631 /* hash it out first */
1632 i = CM_VOLUME_NAME_HASH(volp->namep);
1633 for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
1635 lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
1636 if (tvolp == volp) {
1637 *lvolpp = volp->nameNextp;
1638 _InterlockedAnd(&volp->qflags, ~CM_VOLUME_QFLAG_IN_HASH);
1639 volp->nameNextp = NULL;
1646 /* call with volume write-locked and mutex held */
1647 void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1650 struct cm_vol_state * statep;
1652 statep = cm_VolumeStateByType(volp, volType);
1654 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH)
1657 i = CM_VOLUME_ID_HASH(statep->ID);
1661 statep->nextp = cm_data.volumeRWIDHashTablep[i];
1662 cm_data.volumeRWIDHashTablep[i] = volp;
1665 statep->nextp = cm_data.volumeROIDHashTablep[i];
1666 cm_data.volumeROIDHashTablep[i] = volp;
1669 statep->nextp = cm_data.volumeBKIDHashTablep[i];
1670 cm_data.volumeBKIDHashTablep[i] = volp;
1673 _InterlockedOr(&statep->qflags, CM_VOLUME_QFLAG_IN_HASH);
1677 /* call with volume write-locked and mutex held */
1678 void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
1680 cm_volume_t **lvolpp;
1682 struct cm_vol_state * statep;
1685 statep = cm_VolumeStateByType(volp, volType);
1687 if (statep->qflags & CM_VOLUME_QFLAG_IN_HASH) {
1688 /* hash it out first */
1689 i = CM_VOLUME_ID_HASH(statep->ID);
1693 lvolpp = &cm_data.volumeRWIDHashTablep[i];
1694 tvolp = cm_data.volumeRWIDHashTablep[i];
1697 lvolpp = &cm_data.volumeROIDHashTablep[i];
1698 tvolp = cm_data.volumeROIDHashTablep[i];
1701 lvolpp = &cm_data.volumeBKIDHashTablep[i];
1702 tvolp = cm_data.volumeBKIDHashTablep[i];
1705 osi_assertx(0, "invalid volume type");
1708 if (tvolp == volp) {
1709 *lvolpp = statep->nextp;
1710 _InterlockedAnd(&statep->qflags, ~CM_VOLUME_QFLAG_IN_HASH);
1711 statep->nextp = NULL;
1715 lvolpp = &tvolp->vol[volType].nextp;
1716 tvolp = tvolp->vol[volType].nextp;
1721 /* must be called with cm_volumeLock write-locked! */
1722 void cm_AdjustVolumeLRU(cm_volume_t *volp)
1724 lock_AssertWrite(&cm_volumeLock);
1726 if (volp == cm_data.volumeLRUFirstp)
1729 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1730 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1731 osi_QAddH((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1732 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1734 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1737 /* must be called with cm_volumeLock write-locked! */
1738 void cm_MoveVolumeToLRULast(cm_volume_t *volp)
1740 lock_AssertWrite(&cm_volumeLock);
1742 if (volp == cm_data.volumeLRULastp)
1745 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE)
1746 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1747 osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1748 _InterlockedOr(&volp->qflags, CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1750 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1753 /* must be called with cm_volumeLock write-locked! */
1754 void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
1756 lock_AssertWrite(&cm_volumeLock);
1758 if (volp->qflags & CM_VOLUME_QFLAG_IN_LRU_QUEUE) {
1759 osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
1760 _InterlockedAnd(&volp->qflags, ~CM_VOLUME_QFLAG_IN_LRU_QUEUE);
1763 osi_assertx(cm_data.volumeLRULastp != NULL, "null cm_data.volumeLRULastp");
1766 static char * volstatus_str(enum volstatus vs)
1782 void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
1784 char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
1787 if (volID == volp->vol[RWVOL].ID)
1789 else if (volID == volp->vol[ROVOL].ID)
1791 else if (volID == volp->vol[BACKVOL].ID)
1795 snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
1797 osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
1798 osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
1800 cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
1803 enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
1805 cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
1807 return statep->state;
1812 /* Renew .readonly volume callbacks that are more than
1813 * 30 minutes old. (A volume callback is issued for 2 hours.)
1816 cm_VolumeRenewROCallbacks(void)
1819 time_t minexp = time(NULL) + 90 * 60;
1820 extern int daemon_ShutdownFlag;
1821 extern int powerStateSuspended;
1823 lock_ObtainRead(&cm_volumeLock);
1824 for (volp = cm_data.allVolumesp;
1825 volp && !daemon_ShutdownFlag && !powerStateSuspended;
1826 volp=volp->allNextp) {
1827 if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
1832 cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
1836 lock_ReleaseRead(&cm_volumeLock);
1837 if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
1838 lock_ObtainWrite(&scp->rw);
1839 cm_GetCallback(scp, cm_rootUserp, &req, 1);
1840 lock_ReleaseWrite(&scp->rw);
1841 cm_ReleaseSCache(scp);
1843 lock_ObtainRead(&cm_volumeLock);
1846 lock_ReleaseRead(&cm_volumeLock);
1850 cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
1852 return &volp->vol[volType];
1856 cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
1858 cm_vol_state_t * statep = NULL;
1860 if (id == volp->vol[RWVOL].ID)
1861 statep = &volp->vol[RWVOL];
1862 else if (id == volp->vol[ROVOL].ID)
1863 statep = &volp->vol[ROVOL];
1864 else if (id == volp->vol[BACKVOL].ID)
1865 statep = &volp->vol[BACKVOL];
1871 cm_VolumeStateByName(cm_volume_t *volp, char *volname)
1873 size_t len = strlen(volname);
1874 cm_vol_state_t *statep;
1876 if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
1877 statep = &volp->vol[ROVOL];
1878 else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
1879 statep = &volp->vol[BACKVOL];
1881 statep = &volp->vol[RWVOL];
1887 cm_VolumeType(cm_volume_t *volp, afs_uint32 id)
1889 if (id == volp->vol[RWVOL].ID)
1891 else if (id == volp->vol[ROVOL].ID)
1893 else if (id == volp->vol[BACKVOL].ID)