cm_volume_t * volp;
afs_uint32 count;
- for (volp = cm_data.allVolumesp, count = 0; volp; volp=volp->nextp, count++) {
+ for (volp = cm_data.allVolumesp, count = 0; volp; volp=volp->allNextp, count++) {
if ( volp->magic != CM_VOLUME_MAGIC ) {
afsi_log("cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC");
fprintf(stderr, "cm_ValidateVolume failure: volp->magic != CM_VOLUME_MAGIC\n");
fprintf(stderr, "cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC\n");
return -2;
}
- if ( volp->nextp && volp->nextp->magic != CM_VOLUME_MAGIC ) {
- afsi_log("cm_ValidateVolume failure: volp->nextp->magic != CM_VOLUME_MAGIC");
- fprintf(stderr, "cm_ValidateVolume failure: volp->nextp->magic != CM_VOLUME_MAGIC\n");
+ if ( volp->allNextp && volp->allNextp->magic != CM_VOLUME_MAGIC ) {
+ afsi_log("cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC");
+ fprintf(stderr, "cm_ValidateVolume failure: volp->allNextp->magic != CM_VOLUME_MAGIC\n");
return -3;
}
if ( count != 0 && volp == cm_data.allVolumesp ||
{
cm_volume_t * volp;
- for (volp = cm_data.allVolumesp; volp; volp=volp->nextp)
- lock_FinalizeMutex(&volp->mx);
+ for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
+ afs_uint32 volType;
+ for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
+ if (volp->vol[volType].ID)
+ cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
+ }
+ volp->cbExpiresRO = 0;
+ volp->cbServerpRO = NULL;
+ lock_FinalizeRWLock(&volp->rw);
+ }
return 0;
}
static osi_once_t once;
if (osi_Once(&once)) {
- lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock");
+ lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock", LOCK_HIERARCHY_VOLUME_GLOBAL);
if ( newFile ) {
cm_data.allVolumesp = NULL;
cm_data.currentVolumes = 0;
cm_data.maxVolumes = maxVols;
+ memset(cm_data.volumeNameHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
+ memset(cm_data.volumeRWIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
+ memset(cm_data.volumeROIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
+ memset(cm_data.volumeBKIDHashTablep, 0, sizeof(cm_volume_t *) * cm_data.volumeHashTableSize);
+ cm_data.volumeLRUFirstp = cm_data.volumeLRULastp = NULL;
} else {
cm_volume_t * volp;
- for (volp = cm_data.allVolumesp; volp; volp=volp->nextp) {
- lock_InitializeMutex(&volp->mx, "cm_volume_t mutex");
+ for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
+ afs_uint32 volType;
+
+ lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
volp->flags |= CM_VOLUMEFLAG_RESET;
- volp->rwServersp = NULL;
- volp->roServersp = NULL;
- volp->bkServersp = NULL;
+ volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
+ for (volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
+ volp->vol[volType].state = vl_unknown;
+ volp->vol[volType].serversp = NULL;
+ if (volp->vol[volType].ID)
+ cm_VolumeStatusNotification(volp, volp->vol[volType].ID, vl_unknown, volp->vol[volType].state);
+ }
+ volp->cbExpiresRO = 0;
+ volp->cbServerpRO = NULL;
}
}
osi_EndOnce(&once);
}
}
+
+/* returns true if the id is a decimal integer, in which case we interpret it
+ * as an id. make the cache manager much simpler.
+ * Stolen from src/volser/vlprocs.c */
+int
+cm_VolNameIsID(char *aname)
+{
+ int tc;
+ while (tc = *aname++) {
+ if (tc > '9' || tc < '0')
+ return 0;
+ }
+ return 1;
+}
+
+
/*
- * Update a volume. Caller holds volume's lock (volp->mx).
+ * Update a volume. Caller holds a write lock on the volume (volp->rw).
*
*
* shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
* RXGEN_OPCODE.
*/
#define MULTIHOMED 1
-long cm_UpdateVolume(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
- cm_volume_t *volp)
+long cm_UpdateVolumeLocation(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
+ cm_volume_t *volp)
{
cm_conn_t *connp;
- int i, j, k;
+ int i;
+ afs_uint32 j, k;
cm_serverRef_t *tsrp;
cm_server_t *tsp;
struct sockaddr_in tsockAddr;
#ifdef MULTIHOMED
struct uvldbentry uvldbEntry;
#endif
- int type = -1;
+ int method = -1;
int ROcount = 0;
long code;
+ enum volstatus rwNewstate = vl_online;
+ enum volstatus roNewstate = vl_online;
+ enum volstatus bkNewstate = vl_online;
+#ifdef AFS_FREELANCE_CLIENT
+ int freelance = 0;
+#endif
+ afs_uint32 volType;
- /* clear out old bindings */
- if (volp->rwServersp)
- cm_FreeServerList(&volp->rwServersp);
- if (volp->roServersp)
- cm_FreeServerList(&volp->roServersp);
- if (volp->bkServersp)
- cm_FreeServerList(&volp->bkServersp);
+ lock_AssertWrite(&volp->rw);
#ifdef AFS_FREELANCE_CLIENT
- if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && atoi(volp->namep)==AFS_FAKE_ROOT_VOL_ID )
+ if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->vol[RWVOL].ID == AFS_FAKE_ROOT_VOL_ID )
{
+ freelance = 1;
memset(&vldbEntry, 0, sizeof(vldbEntry));
vldbEntry.flags |= VLF_RWEXISTS;
vldbEntry.volumeId[0] = AFS_FAKE_ROOT_VOL_ID;
code = 0;
- type = 0;
+ method = 0;
} else
#endif
{
+ while (volp->flags & CM_VOLUMEFLAG_UPDATING_VL) {
+ osi_Log3(afsd_logp, "cm_UpdateVolumeLocation sleeping name %s:%s flags 0x%x",
+ volp->cellp->name, volp->namep, volp->flags);
+ osi_SleepW((LONG_PTR) &volp->flags, &volp->rw);
+ lock_ObtainWrite(&volp->rw);
+ osi_Log3(afsd_logp, "cm_UpdateVolumeLocation awake name %s:%s flags 0x%x",
+ volp->cellp->name, volp->namep, volp->flags);
+ if (!(volp->flags & CM_VOLUMEFLAG_RESET)) {
+ osi_Log3(afsd_logp, "cm_UpdateVolumeLocation nothing to do, waking others name %s:%s flags 0x%x",
+ volp->cellp->name, volp->namep, volp->flags);
+ osi_Wakeup((LONG_PTR) &volp->flags);
+ return 0;
+ }
+ }
+
+ /* clear out old bindings */
+ for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
+ if (volp->vol[volType].serversp)
+ cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
+ }
+
+ volp->flags |= CM_VOLUMEFLAG_UPDATING_VL;
+ lock_ReleaseWrite(&volp->rw);
+
+ if (cellp->flags & CM_CELLFLAG_VLSERVER_INVALID)
+ cm_UpdateCell(cellp, 0);
+
+ /* now we have volume structure locked and held; make RPC to fill it */
+ osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
+ osi_LogSaveString(afsd_logp,volp->cellp->name),
+ osi_LogSaveString(afsd_logp,volp->namep));
+ do {
+ struct rx_connection * rxconnp;
+
+ code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
+ if (code)
+ continue;
+
+ rxconnp = cm_GetRxConn(connp);
+#ifdef MULTIHOMED
+ code = VL_GetEntryByNameU(rxconnp, volp->namep, &uvldbEntry);
+ method = 2;
+ if ( code == RXGEN_OPCODE )
+#endif
+ {
+ code = VL_GetEntryByNameN(rxconnp, volp->namep, &nvldbEntry);
+ method = 1;
+ }
+ if ( code == RXGEN_OPCODE ) {
+ code = VL_GetEntryByNameO(rxconnp, volp->namep, &vldbEntry);
+ method = 0;
+ }
+ rx_PutConnection(rxconnp);
+ } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
+ code = cm_MapVLRPCError(code, reqp);
+ if ( code )
+ osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
+ osi_LogSaveString(afsd_logp,volp->cellp->name),
+ osi_LogSaveString(afsd_logp,volp->namep), code);
+ else
+ osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
+ osi_LogSaveString(afsd_logp,volp->cellp->name),
+ osi_LogSaveString(afsd_logp,volp->namep));
+ }
+
+ /* We can end up here with code == CM_ERROR_NOSUCHVOLUME if the base volume name
+ * does not exist but there might exist a .readonly volume. If the base name
+ * doesn't exist we will not care about the .backup that might be left behind
+ * since there should be no method to access it.
+ */
+ if (code == CM_ERROR_NOSUCHVOLUME && volp->vol[RWVOL].ID == 0 && strlen(volp->namep) < (VL_MAXNAMELEN - 9)) {
+ char name[VL_MAXNAMELEN];
+
+ snprintf(name, VL_MAXNAMELEN, "%s.readonly", volp->namep);
+
/* now we have volume structure locked and held; make RPC to fill it */
- osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s", volp->cellp->name, volp->namep);
+ osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s",
+ osi_LogSaveString(afsd_logp,volp->cellp->name),
+ osi_LogSaveString(afsd_logp,name));
do {
+ struct rx_connection * rxconnp;
+
code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
if (code)
continue;
+
+ rxconnp = cm_GetRxConn(connp);
#ifdef MULTIHOMED
- code = VL_GetEntryByNameU(connp->callp, volp->namep, &uvldbEntry);
- type = 2;
+ code = VL_GetEntryByNameU(connp->rxconnp, name, &uvldbEntry);
+ method = 2;
if ( code == RXGEN_OPCODE )
#endif
{
- code = VL_GetEntryByNameN(connp->callp, volp->namep, &nvldbEntry);
- type = 1;
+ code = VL_GetEntryByNameN(connp->rxconnp, name, &nvldbEntry);
+ method = 1;
}
if ( code == RXGEN_OPCODE ) {
- code = VL_GetEntryByNameO(connp->callp, volp->namep, &vldbEntry);
- type = 0;
+ code = VL_GetEntryByNameO(connp->rxconnp, name, &vldbEntry);
+ method = 0;
}
+ rx_PutConnection(rxconnp);
} while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
code = cm_MapVLRPCError(code, reqp);
if ( code )
osi_Log3(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s FAILURE, code 0x%x",
- volp->cellp->name, volp->namep, code);
+ osi_LogSaveString(afsd_logp,volp->cellp->name),
+ osi_LogSaveString(afsd_logp,name), code);
else
osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
- volp->cellp->name, volp->namep);
+ osi_LogSaveString(afsd_logp,volp->cellp->name),
+ osi_LogSaveString(afsd_logp,name));
}
+
+ lock_ObtainWrite(&volp->rw);
if (code == 0) {
afs_int32 flags;
afs_int32 nServers;
afs_int32 bkID;
afs_int32 serverNumber[NMAXNSERVERS];
afs_int32 serverFlags[NMAXNSERVERS];
+ afsUUID serverUUID[NMAXNSERVERS];
+ afs_int32 rwServers_alldown = 1;
+ afs_int32 roServers_alldown = 1;
+ afs_int32 bkServers_alldown = 1;
+ char name[VL_MAXNAMELEN];
- switch ( type ) {
+#ifdef AFS_FREELANCE_CLIENT
+ if (freelance)
+ rwServers_alldown = 0;
+#endif
+
+ memset(serverUUID, 0, sizeof(serverUUID));
+
+ switch ( method ) {
case 0:
flags = vldbEntry.flags;
nServers = vldbEntry.nServers;
serverFlags[i] = vldbEntry.serverFlags[i];
serverNumber[i] = vldbEntry.serverNumber[i];
}
+ strncpy(name, vldbEntry.name, VL_MAXNAMELEN);
+ name[VL_MAXNAMELEN - 1] = '\0';
break;
case 1:
flags = nvldbEntry.flags;
serverFlags[i] = nvldbEntry.serverFlags[i];
serverNumber[i] = nvldbEntry.serverNumber[i];
}
+ strncpy(name, nvldbEntry.name, VL_MAXNAMELEN);
+ name[VL_MAXNAMELEN - 1] = '\0';
break;
#ifdef MULTIHOMED
case 2:
rwID = uvldbEntry.volumeId[0];
roID = uvldbEntry.volumeId[1];
bkID = uvldbEntry.volumeId[2];
- for ( i=0, j=0; i<nServers && j<NMAXNSERVERS; i++ ) {
+ for ( i=0, j=0; code == 0 && i<nServers && j<NMAXNSERVERS; i++ ) {
if ( !(uvldbEntry.serverFlags[i] & VLSERVER_FLAG_UUID) ) {
serverFlags[j] = uvldbEntry.serverFlags[i];
serverNumber[j] = uvldbEntry.serverNumber[i].time_low;
memset((char *)&addrs, 0, sizeof(addrs));
do {
+ struct rx_connection *rxconnp;
+
code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
if (code)
continue;
- code = VL_GetAddrsU(connp->callp, &attrs, &uuid, &unique, &nentries, &addrs);
-
- if (code == 0 && nentries == 0)
- code = VL_NOENT;
+ rxconnp = cm_GetRxConn(connp);
+ code = VL_GetAddrsU(rxconnp, &attrs, &uuid, &unique, &nentries, &addrs);
+ rx_PutConnection(rxconnp);
} while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
- code = cm_MapVLRPCError(code, reqp);
- if (code)
- return code;
+
+ if ( code ) {
+ code = cm_MapVLRPCError(code, reqp);
+ osi_Log2(afsd_logp, "CALL VL_GetAddrsU serverNumber %u FAILURE, code 0x%x",
+ i, code);
+ continue;
+ }
+ osi_Log1(afsd_logp, "CALL VL_GetAddrsU serverNumber %u SUCCESS", i);
addrp = addrs.bulkaddrs_val;
for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
serverFlags[j] = uvldbEntry.serverFlags[i];
serverNumber[j] = addrp[k];
+ serverUUID[j] = uuid;
}
- free(addrs.bulkaddrs_val); /* This is wrong */
+ xdr_free(addrs.bulkaddrs_val, addrs.bulkaddrs_len * sizeof(*addrs.bulkaddrs_val));
+
+ if (nentries == 0)
+ code = CM_ERROR_INVAL;
}
}
nServers = j; /* update the server count */
+ strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
+ name[VL_MAXNAMELEN - 1] = '\0';
break;
#endif
}
/* decode the response */
lock_ObtainWrite(&cm_volumeLock);
- if (flags & VLF_RWEXISTS)
- volp->rwID = rwID;
- else
- volp->rwID = 0;
- if (flags & VLF_ROEXISTS)
- volp->roID = roID;
- else
- volp->roID = 0;
- if (flags & VLF_BACKEXISTS)
- volp->bkID = bkID;
- else
- volp->bkID = 0;
+ if (cm_VolNameIsID(volp->namep)) {
+ size_t len;
+
+ len = strlen(name);
+
+ if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
+ name[len - 7] = '\0';
+ } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
+ name[len - 9] = '\0';
+ }
+
+ osi_Log2(afsd_logp, "cm_UpdateVolume name %s -> %s",
+ osi_LogSaveString(afsd_logp,volp->namep), osi_LogSaveString(afsd_logp,name));
+
+ if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromNameHashTable(volp);
+
+ strcpy(volp->namep, name);
+
+ cm_AddVolumeToNameHashTable(volp);
+ }
+
+ if (flags & VLF_DFSFILESET) {
+ volp->flags |= CM_VOLUMEFLAG_DFS_VOLUME;
+ osi_Log1(afsd_logp, "cm_UpdateVolume Volume Group '%s' is a DFS File Set. Correct behavior is not implemented.",
+ osi_LogSaveString(afsd_logp, volp->namep));
+ }
+
+ if (flags & VLF_RWEXISTS) {
+ if (volp->vol[RWVOL].ID != rwID) {
+ if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
+ volp->vol[RWVOL].ID = rwID;
+ cm_AddVolumeToIDHashTable(volp, RWVOL);
+ }
+ } else {
+ if (volp->vol[RWVOL].flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
+ volp->vol[RWVOL].ID = 0;
+ }
+ if (flags & VLF_ROEXISTS) {
+ if (volp->vol[ROVOL].ID != roID) {
+ if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
+ volp->vol[ROVOL].ID = roID;
+ cm_AddVolumeToIDHashTable(volp, ROVOL);
+ }
+ } else {
+ if (volp->vol[ROVOL].flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
+ volp->vol[ROVOL].ID = 0;
+ }
+ if (flags & VLF_BACKEXISTS) {
+ if (volp->vol[BACKVOL].ID != bkID) {
+ if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
+ volp->vol[BACKVOL].ID = bkID;
+ cm_AddVolumeToIDHashTable(volp, BACKVOL);
+ }
+ } else {
+ if (volp->vol[BACKVOL].flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
+ volp->vol[BACKVOL].ID = 0;
+ }
lock_ReleaseWrite(&cm_volumeLock);
for (i=0; i<nServers; i++) {
/* create a server entry */
tflags = serverFlags[i];
if (tflags & VLSF_DONTUSE)
continue;
+ tsockAddr.sin_port = htons(7000);
tsockAddr.sin_family = AF_INET;
tempAddr = htonl(serverNumber[i]);
tsockAddr.sin_addr.s_addr = tempAddr;
tsp = cm_FindServer(&tsockAddr, CM_SERVER_FILE);
- if (!tsp)
- tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE,
- cellp);
+ if (tsp && (method == 2) && (tsp->flags & CM_SERVERFLAG_UUID)) {
+ /*
+ * Check to see if the uuid of the server we know at this address
+ * matches the uuid of the server we are being told about by the
+ * vlserver. If not, ...?
+ */
+ if (!afs_uuid_equal(&serverUUID[i], &tsp->uuid)) {
+ char uuid1[128], uuid2[128];
+ char hoststr[16];
+
+ afsUUID_to_string(&serverUUID[i], uuid1, sizeof(uuid1));
+ afsUUID_to_string(&tsp->uuid, uuid2, sizeof(uuid2));
+ afs_inet_ntoa_r(serverNumber[i], hoststr);
- /* if this server was created by fs setserverprefs */
+ osi_Log3(afsd_logp, "cm_UpdateVolumeLocation UUIDs do not match! %s != %s (%s)",
+ osi_LogSaveString(afsd_logp, uuid1),
+ osi_LogSaveString(afsd_logp, uuid2),
+ osi_LogSaveString(afsd_logp, hoststr));
+ }
+ }
+ if (!tsp) {
+ /* cm_NewServer will probe the server which in turn will
+ * update the state on the volume group object */
+ lock_ReleaseWrite(&volp->rw);
+ tsp = cm_NewServer(&tsockAddr, CM_SERVER_FILE, cellp, &serverUUID[i], 0);
+ lock_ObtainWrite(&volp->rw);
+ }
+ osi_assertx(tsp != NULL, "null cm_server_t");
+
+ /*
+ * if this server was created by fs setserverprefs
+ * then it won't have either a cell assignment or
+ * a server uuid.
+ */
if ( !tsp->cellp )
tsp->cellp = cellp;
+ if ( (method == 2) && !(tsp->flags & CM_SERVERFLAG_UUID) &&
+ !afs_uuid_is_nil(&serverUUID[i])) {
+ tsp->uuid = serverUUID[i];
+ tsp->flags |= CM_SERVERFLAG_UUID;
+ }
- osi_assert(tsp != NULL);
-
/* and add it to the list(s). */
/*
* Each call to cm_NewServerRef() increments the
* earlier in this function.
*/
if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
- tsrp = cm_NewServerRef(tsp);
- cm_InsertServerList(&volp->rwServersp, tsrp);
+ tsrp = cm_NewServerRef(tsp, rwID);
+ cm_InsertServerList(&volp->vol[RWVOL].serversp, tsrp);
+
lock_ObtainWrite(&cm_serverLock);
tsrp->refCount--; /* drop allocation reference */
lock_ReleaseWrite(&cm_serverLock);
+
+ if (!(tsp->flags & CM_SERVERFLAG_DOWN))
+ rwServers_alldown = 0;
}
if ((tflags & VLSF_ROVOL) && (flags & VLF_ROEXISTS)) {
- tsrp = cm_NewServerRef(tsp);
- cm_InsertServerList(&volp->roServersp, tsrp);
+ tsrp = cm_NewServerRef(tsp, roID);
+ cm_InsertServerList(&volp->vol[ROVOL].serversp, tsrp);
lock_ObtainWrite(&cm_serverLock);
tsrp->refCount--; /* drop allocation reference */
lock_ReleaseWrite(&cm_serverLock);
ROcount++;
+
+ if (!(tsp->flags & CM_SERVERFLAG_DOWN))
+ roServers_alldown = 0;
}
/* We don't use VLSF_BACKVOL !?! */
+ /* Because only the backup on the server holding the RW
+ * volume can be valid. This check prevents errors if a
+ * RW is moved but the old backup is not removed.
+ */
if ((tflags & VLSF_RWVOL) && (flags & VLF_BACKEXISTS)) {
- tsrp = cm_NewServerRef(tsp);
- cm_InsertServerList(&volp->bkServersp, tsrp);
+ tsrp = cm_NewServerRef(tsp, bkID);
+ cm_InsertServerList(&volp->vol[BACKVOL].serversp, tsrp);
lock_ObtainWrite(&cm_serverLock);
tsrp->refCount--; /* drop allocation reference */
lock_ReleaseWrite(&cm_serverLock);
+
+ if (!(tsp->flags & CM_SERVERFLAG_DOWN))
+ bkServers_alldown = 0;
}
/* Drop the reference obtained by cm_FindServer() */
cm_PutServer(tsp);
* lists are length 1.
*/
if (ROcount > 1) {
- cm_RandomizeServer(&volp->roServersp);
+ cm_RandomizeServer(&volp->vol[ROVOL].serversp);
}
+
+
+ rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
+ roNewstate = roServers_alldown ? vl_alldown : vl_online;
+ bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
+ } else if (code == CM_ERROR_NOSUCHVOLUME || code == VL_NOENT || code == VL_BADNAME) {
+ /* this volume does not exist - we should discard it */
+ if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromNameHashTable(volp);
+ for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
+ if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, volType);
+ if (volp->vol[volType].ID) {
+ cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_alldown);
+ volp->vol[volType].ID = 0;
+ }
+ cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
+ }
+
+ /* Move to the end so it will be recycled first */
+ cm_MoveVolumeToLRULast(volp);
+
+ volp->namep[0] ='\0';
+ } else {
+ rwNewstate = roNewstate = bkNewstate = vl_alldown;
+ }
+
+ if (volp->vol[RWVOL].state != rwNewstate) {
+ if (volp->vol[RWVOL].ID)
+ cm_VolumeStatusNotification(volp, volp->vol[RWVOL].ID, volp->vol[RWVOL].state, rwNewstate);
+ volp->vol[RWVOL].state = rwNewstate;
+ }
+ if (volp->vol[ROVOL].state != roNewstate) {
+ if (volp->vol[ROVOL].ID)
+ cm_VolumeStatusNotification(volp, volp->vol[ROVOL].ID, volp->vol[ROVOL].state, roNewstate);
+ volp->vol[ROVOL].state = roNewstate;
}
+ if (volp->vol[BACKVOL].state != bkNewstate) {
+ if (volp->vol[BACKVOL].ID)
+ cm_VolumeStatusNotification(volp, volp->vol[BACKVOL].ID, volp->vol[BACKVOL].state, bkNewstate);
+ volp->vol[BACKVOL].state = bkNewstate;
+ }
+
+ if (code == 0)
+ volp->flags &= ~CM_VOLUMEFLAG_RESET;
+
+ volp->flags &= ~CM_VOLUMEFLAG_UPDATING_VL;
+ osi_Log4(afsd_logp, "cm_UpdateVolumeLocation done, waking others name %s:%s flags 0x%x code 0x%x",
+ osi_LogSaveString(afsd_logp,volp->cellp->name),
+ osi_LogSaveString(afsd_logp,volp->namep), volp->flags, code);
+ osi_Wakeup((LONG_PTR) &volp->flags);
+
return code;
}
-long cm_GetVolumeByID(cm_cell_t *cellp, long volumeID, cm_user_t *userp,
- cm_req_t *reqp, cm_volume_t **outVolpp)
+/* Requires read or write lock on cm_volumeLock */
+void cm_GetVolume(cm_volume_t *volp)
{
- cm_volume_t *volp;
- char volNameString[100];
- long code;
+ InterlockedIncrement(&volp->refCount);
+}
- lock_ObtainWrite(&cm_volumeLock);
- for(volp = cm_data.allVolumesp; volp; volp=volp->nextp) {
- if (cellp == volp->cellp &&
- ((unsigned) volumeID == volp->rwID ||
- (unsigned) volumeID == volp->roID ||
- (unsigned) volumeID == volp->bkID))
- break;
+cm_volume_t *cm_GetVolumeByFID(cm_fid_t *fidp)
+{
+ cm_volume_t *volp;
+ afs_uint32 hash;
+
+ lock_ObtainRead(&cm_volumeLock);
+ hash = CM_VOLUME_ID_HASH(fidp->volume);
+ /* The volumeID can be any one of the three types. So we must
+ * search the hash table for all three types until we find it.
+ * We will search in the order of RO, RW, BK.
+ */
+ for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
+ if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[ROVOL].ID )
+ break;
+ }
+ if (!volp) {
+ /* try RW volumes */
+ for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
+ if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[RWVOL].ID )
+ break;
+ }
+ }
+ if (!volp) {
+ /* try BK volumes */
+ for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
+ if ( fidp->cell == volp->cellp->cellID && fidp->volume == volp->vol[BACKVOL].ID )
+ break;
}
+ }
- /* hold the volume if we found it */
+ /* hold the volume if we found it */
if (volp)
- volp->refCount++;
- lock_ReleaseWrite(&cm_volumeLock);
-
- /* return it held */
- if (volp) {
- lock_ObtainMutex(&volp->mx);
+ cm_GetVolume(volp);
- if (volp->flags & CM_VOLUMEFLAG_RESET) {
- code = cm_UpdateVolume(cellp, userp, reqp, volp);
- if (code == 0) {
- volp->flags &= ~CM_VOLUMEFLAG_RESET;
- }
- }
- else
- code = 0;
- lock_ReleaseMutex(&volp->mx);
- if (code == 0)
- *outVolpp = volp;
- return code;
- }
-
- /* otherwise, we didn't find it so consult the VLDB */
- sprintf(volNameString, "%u", volumeID);
- code = cm_GetVolumeByName(cellp, volNameString, userp, reqp,
- 0, outVolpp);
- return code;
+ lock_ReleaseRead(&cm_volumeLock);
+ return volp;
}
-long cm_GetVolumeByName(struct cm_cell *cellp, char *volumeNamep,
- struct cm_user *userp, struct cm_req *reqp,
- long flags, cm_volume_t **outVolpp)
+long cm_FindVolumeByID(cm_cell_t *cellp, afs_uint32 volumeID, cm_user_t *userp,
+ cm_req_t *reqp, afs_uint32 flags, cm_volume_t **outVolpp)
{
- cm_volume_t *volp;
- long code;
-
- /* initialize this */
- code = 0;
+ cm_volume_t *volp;
+#ifdef SEARCH_ALL_VOLUMES
+ cm_volume_t *volp2;
+#endif
+ char volNameString[VL_MAXNAMELEN];
+ afs_uint32 hash;
+ long code = 0;
+
+ lock_ObtainRead(&cm_volumeLock);
+#ifdef SEARCH_ALL_VOLUMES
+ for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
+ if (cellp == volp->cellp &&
+ ((unsigned) volumeID == volp->vol[RWVOL].ID ||
+ (unsigned) volumeID == volp->vol[ROVOL].ID ||
+ (unsigned) volumeID == volp->vol[BACKVOL].ID))
+ break;
+ }
- lock_ObtainWrite(&cm_volumeLock);
- for (volp = cm_data.allVolumesp; volp; volp=volp->nextp) {
- if (cellp == volp->cellp && strcmp(volumeNamep, volp->namep) == 0) {
+ volp2 = volp;
+#endif /* SEARCH_ALL_VOLUMES */
+
+ hash = CM_VOLUME_ID_HASH(volumeID);
+ /* The volumeID can be any one of the three types. So we must
+ * search the hash table for all three types until we find it.
+ * We will search in the order of RO, RW, BK.
+ */
+ for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
+ if ( cellp == volp->cellp && volumeID == volp->vol[ROVOL].ID )
+ break;
+ }
+ if (!volp) {
+ /* try RW volumes */
+ for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
+ if ( cellp == volp->cellp && volumeID == volp->vol[RWVOL].ID )
+ break;
+ }
+ }
+ if (!volp) {
+ /* try BK volumes */
+ for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
+ if ( cellp == volp->cellp && volumeID == volp->vol[BACKVOL].ID )
break;
+ }
+ }
+
+#ifdef SEARCH_ALL_VOLUMES
+ osi_assertx(volp == volp2, "unexpected cm_vol_t");
+#endif
+
+ /* hold the volume if we found it */
+ if (volp)
+ cm_GetVolume(volp);
+
+ lock_ReleaseRead(&cm_volumeLock);
+
+ /* return it held */
+ if (volp) {
+ lock_ObtainWrite(&volp->rw);
+
+ code = 0;
+ if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
+ code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
+ }
+ lock_ReleaseWrite(&volp->rw);
+ if (code == 0) {
+ *outVolpp = volp;
+
+ if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
+ lock_ObtainWrite(&cm_volumeLock);
+ cm_AdjustVolumeLRU(volp);
+ lock_ReleaseWrite(&cm_volumeLock);
}
+ } else {
+ lock_ObtainRead(&cm_volumeLock);
+ cm_PutVolume(volp);
+ lock_ReleaseRead(&cm_volumeLock);
}
+ return code;
+ }
+ /* otherwise, we didn't find it so consult the VLDB */
+ sprintf(volNameString, "%u", volumeID);
+ code = cm_FindVolumeByName(cellp, volNameString, userp, reqp,
+ flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL, outVolpp);
+
+ if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
+ !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
+ cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
+
+ if (linkedCellp)
+ code = cm_FindVolumeByID(linkedCellp, volumeID, userp, reqp,
+ flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
+ outVolpp);
+ }
+ return code;
+}
+
+
+long cm_FindVolumeByName(struct cm_cell *cellp, char *volumeNamep,
+ struct cm_user *userp, struct cm_req *reqp,
+ afs_uint32 flags, cm_volume_t **outVolpp)
+{
+ cm_volume_t *volp;
+#ifdef SEARCH_ALL_VOLUMES
+ cm_volume_t *volp2;
+#endif
+ long code = 0;
+ char name[VL_MAXNAMELEN];
+ size_t len;
+ int type;
+ afs_uint32 hash;
+
+ strncpy(name, volumeNamep, VL_MAXNAMELEN);
+ name[VL_MAXNAMELEN-1] = '\0';
+ len = strlen(name);
+
+ if (len >= 8 && strcmp(name + len - 7, ".backup") == 0) {
+ type = BACKVOL;
+ name[len - 7] = '\0';
+ } else if (len >= 10 && strcmp(name + len - 9, ".readonly") == 0) {
+ type = ROVOL;
+ name[len - 9] = '\0';
+ } else {
+ type = RWVOL;
+ }
+
+ lock_ObtainRead(&cm_volumeLock);
+#ifdef SEARCH_ALL_VOLUMES
+ for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
+ if (cellp == volp->cellp && strcmp(name, volp->namep) == 0) {
+ break;
+ }
+ }
+ volp2 = volp;
+#endif /* SEARCH_ALL_VOLUMES */
+
+ hash = CM_VOLUME_NAME_HASH(name);
+ for (volp = cm_data.volumeNameHashTablep[hash]; volp; volp = volp->nameNextp) {
+ if (cellp == volp->cellp && strcmp(name, volp->namep) == 0)
+ break;
+ }
+
+#ifdef SEARCH_ALL_VOLUMES
+ osi_assertx(volp2 == volp, "unexpected cm_vol_t");
+#endif
+
+ if (!volp && (flags & CM_GETVOL_FLAG_CREATE)) {
+ afs_uint32 volType;
/* otherwise, get from VLDB */
- if (!volp) {
- if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
- for (volp = cm_data.allVolumesp; volp; volp=volp->nextp) {
- if ( volp->refCount == 0 ) {
- /* There is one we can re-use */
- break;
- }
- }
- if (!volp)
- osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
+
+ /*
+ * Change to a write lock so that we have exclusive use of
+ * the first cm_volume_t with a refCount of 0 so that we
+ * have time to increment it.
+ */
+ lock_ConvertRToW(&cm_volumeLock);
+
+ if ( cm_data.currentVolumes >= cm_data.maxVolumes ) {
+#ifdef RECYCLE_FROM_ALL_VOLUMES_LIST
+ for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
+ if ( volp->refCount == 0 ) {
+ /* There is one we can re-use */
+ break;
+ }
+ }
+#else
+ for ( volp = cm_data.volumeLRULastp;
+ volp;
+ volp = (cm_volume_t *) osi_QPrev(&volp->q))
+ {
+ if ( volp->refCount == 0 ) {
+ /* There is one we can re-use */
+ break;
+ }
}
+#endif
+ if (!volp)
+ osi_panic("Exceeded Max Volumes", __FILE__, __LINE__);
- if (volp) {
- volp->rwID = volp->roID = volp->bkID = 0;
- volp->dotdotFid.cell = 0;
- volp->dotdotFid.volume = 0;
- volp->dotdotFid.unique = 0;
- volp->dotdotFid.vnode = 0;
- } else {
- volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
- memset(volp, 0, sizeof(cm_volume_t));
- volp->magic = CM_VOLUME_MAGIC;
- volp->nextp = cm_data.allVolumesp;
- cm_data.allVolumesp = volp;
- lock_InitializeMutex(&volp->mx, "cm_volume_t mutex");
+ InterlockedIncrement(&volp->refCount);
+ lock_ReleaseWrite(&cm_volumeLock);
+ lock_ObtainWrite(&volp->rw);
+ lock_ObtainWrite(&cm_volumeLock);
+
+ osi_Log2(afsd_logp, "Recycling Volume %s:%s",
+ volp->cellp->name, volp->namep);
+
+ if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
+ cm_RemoveVolumeFromLRU(volp);
+ if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromNameHashTable(volp);
+
+ for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
+ if (volp->vol[volType].flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, volType);
+ if (volp->vol[volType].ID)
+ cm_VolumeStatusNotification(volp, volp->vol[volType].ID, volp->vol[volType].state, vl_unknown);
+ volp->vol[volType].ID = 0;
+ cm_SetFid(&volp->vol[volType].dotdotFid, 0, 0, 0, 0);
+ lock_ReleaseWrite(&cm_volumeLock);
+ cm_FreeServerList(&volp->vol[volType].serversp, CM_FREESERVERLIST_DELETE);
+ lock_ObtainWrite(&cm_volumeLock);
}
- volp->cellp = cellp;
- strncpy(volp->namep, volumeNamep, VL_MAXNAMELEN);
- volp->namep[VL_MAXNAMELEN-1] = '\0';
+ } else {
+ volp = &cm_data.volumeBaseAddress[cm_data.currentVolumes++];
+ memset(volp, 0, sizeof(cm_volume_t));
+ volp->magic = CM_VOLUME_MAGIC;
+ volp->allNextp = cm_data.allVolumesp;
+ cm_data.allVolumesp = volp;
+ lock_InitializeRWLock(&volp->rw, "cm_volume_t rwlock", LOCK_HIERARCHY_VOLUME);
+ lock_ReleaseWrite(&cm_volumeLock);
+ lock_ObtainWrite(&volp->rw);
+ lock_ObtainWrite(&cm_volumeLock);
volp->refCount = 1; /* starts off held */
- volp->flags = CM_VOLUMEFLAG_RESET;
- }
- else {
- volp->refCount++;
- }
-
- /* next should work since no one could have gotten ptr to this structure yet */
+ }
+ volp->cellp = cellp;
+ strncpy(volp->namep, name, VL_MAXNAMELEN);
+ volp->namep[VL_MAXNAMELEN-1] = '\0';
+ volp->flags = CM_VOLUMEFLAG_RESET;
+
+ for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
+ volp->vol[volType].state = vl_unknown;
+ volp->vol[volType].nextp = NULL;
+ volp->vol[volType].flags = 0;
+ }
+ volp->cbExpiresRO = 0;
+ volp->cbServerpRO = NULL;
+ cm_AddVolumeToNameHashTable(volp);
lock_ReleaseWrite(&cm_volumeLock);
- lock_ObtainMutex(&volp->mx);
+ }
+ else {
+ if (volp)
+ cm_GetVolume(volp);
+ lock_ReleaseRead(&cm_volumeLock);
- if (volp->flags & CM_VOLUMEFLAG_RESET) {
- code = cm_UpdateVolume(cellp, userp, reqp, volp);
- if (code == 0)
- volp->flags &= ~CM_VOLUMEFLAG_RESET;
- }
+ if (!volp)
+ return CM_ERROR_NOSUCHVOLUME;
- if (code == 0)
- *outVolpp = volp;
- lock_ReleaseMutex(&volp->mx);
- return code;
-}
-
-void cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
-{
- cm_cell_t *cellp;
- cm_volume_t *volp;
+ lock_ObtainWrite(&volp->rw);
+ }
- if (!fidp) return;
+ /* if we get here we are holding the mutex */
+ if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
+ code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
+ }
+ lock_ReleaseWrite(&volp->rw);
- cellp = cm_FindCellByID(fidp->cell);
- if (!cellp) return;
+ if (code == 0 && (type == BACKVOL && volp->vol[BACKVOL].ID == 0 ||
+ type == ROVOL && volp->vol[ROVOL].ID == 0))
+ code = CM_ERROR_NOSUCHVOLUME;
- /* search for the volume */
- lock_ObtainWrite(&cm_volumeLock);
- for(volp = cm_data.allVolumesp; volp; volp=volp->nextp) {
- if (cellp == volp->cellp &&
- (fidp->volume == volp->rwID ||
- fidp->volume == volp->roID ||
- fidp->volume == volp->bkID))
- break;
+ if (code == 0) {
+ *outVolpp = volp;
+
+ if (!(flags & CM_GETVOL_FLAG_NO_LRU_UPDATE)) {
+ lock_ObtainWrite(&cm_volumeLock);
+ cm_AdjustVolumeLRU(volp);
+ lock_ReleaseWrite(&cm_volumeLock);
}
+ } else {
+ lock_ObtainRead(&cm_volumeLock);
+ cm_PutVolume(volp);
+ lock_ReleaseRead(&cm_volumeLock);
+ }
- /* hold the volume if we found it */
- if (volp) volp->refCount++;
- lock_ReleaseWrite(&cm_volumeLock);
+ if (code == CM_ERROR_NOSUCHVOLUME && cellp->linkedName[0] &&
+ !(flags & CM_GETVOL_FLAG_IGNORE_LINKED_CELL)) {
+ cm_cell_t *linkedCellp = cm_GetCell(cellp->linkedName, flags);
- /* update it */
- cm_data.mountRootGen = time(NULL);
- lock_ObtainMutex(&volp->mx);
- volp->flags |= CM_VOLUMEFLAG_RESET;
-#ifdef COMMENT
- /* Mark the volume to be updated but don't update it now.
- * This function is called only from within cm_Analyze
- * when cm_ConnByMServers has failed with all servers down
- * The problem is that cm_UpdateVolume is going to call
- * cm_ConnByMServers which may cause a recursive chain
- * of calls each returning a retry on failure.
- * Instead, set the flag so the next time the volume is
- * accessed by Name or ID the UpdateVolume call will
- * occur.
+ if (linkedCellp)
+ code = cm_FindVolumeByName(linkedCellp, volumeNamep, userp, reqp,
+ flags | CM_GETVOL_FLAG_IGNORE_LINKED_CELL,
+ outVolpp);
+ }
+ return code;
+}
+
+/*
+ * Only call this function in response to a VNOVOL or VMOVED error
+ * from a file server. Do not call it in response to CM_ERROR_NOSUCHVOLUME
+ * as that can lead to recursive calls.
+ */
+long cm_ForceUpdateVolume(cm_fid_t *fidp, cm_user_t *userp, cm_req_t *reqp)
+{
+ cm_cell_t *cellp;
+ cm_volume_t *volp;
+#ifdef SEARCH_ALL_VOLUMES
+ cm_volume_t *volp2;
+#endif
+ afs_uint32 hash;
+ long code;
+
+ if (!fidp)
+ return CM_ERROR_INVAL;
+
+ cellp = cm_FindCellByID(fidp->cell, 0);
+ if (!cellp)
+ return CM_ERROR_NOSUCHCELL;
+
+ /* search for the volume */
+ lock_ObtainRead(&cm_volumeLock);
+#ifdef SEARCH_ALL_VOLUMES
+ for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
+ if (cellp == volp->cellp &&
+ (fidp->volume == volp->vol[RWVOL].ID ||
+ fidp->volume == volp->vol[ROVOL].ID ||
+ fidp->volume == volp->vol[BACKVOL].ID))
+ break;
+ }
+#endif /* SEARCH_ALL_VOLUMES */
+
+ hash = CM_VOLUME_ID_HASH(fidp->volume);
+ /* The volumeID can be any one of the three types. So we must
+ * search the hash table for all three types until we find it.
+ * We will search in the order of RO, RW, BK.
*/
- code = cm_UpdateVolume(cellp, userp, reqp, volp);
- if (code == 0)
- volp->flags &= ~CM_VOLUMEFLAG_RESET;
+ for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->vol[ROVOL].nextp) {
+ if ( cellp == volp->cellp && fidp->volume == volp->vol[ROVOL].ID )
+ break;
+ }
+ if (!volp) {
+ /* try RW volumes */
+ for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->vol[RWVOL].nextp) {
+ if ( cellp == volp->cellp && fidp->volume == volp->vol[RWVOL].ID )
+ break;
+ }
+ }
+ if (!volp) {
+ /* try BK volumes */
+ for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->vol[BACKVOL].nextp) {
+ if ( cellp == volp->cellp && fidp->volume == volp->vol[BACKVOL].ID )
+ break;
+ }
+ }
+
+#ifdef SEARCH_ALL_VOLUMES
+ osi_assertx(volp == volp2, "unexpected cm_vol_t");
#endif
- lock_ReleaseMutex(&volp->mx);
+ /* hold the volume if we found it */
+ if (volp)
+ cm_GetVolume(volp);
+
+ lock_ReleaseRead(&cm_volumeLock);
+
+ if (!volp)
+ return CM_ERROR_NOSUCHVOLUME;
+
+ /* update it */
+ cm_data.mountRootGen = time(NULL);
+ lock_ObtainWrite(&volp->rw);
+ volp->flags |= CM_VOLUMEFLAG_RESET;
- cm_PutVolume(volp);
+ code = cm_UpdateVolumeLocation(cellp, userp, reqp, volp);
+ lock_ReleaseWrite(&volp->rw);
+
+ lock_ObtainRead(&cm_volumeLock);
+ cm_PutVolume(volp);
+ lock_ReleaseRead(&cm_volumeLock);
+
+ return code;
}
/* find the appropriate servers from a volume */
-cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, unsigned long volume)
+cm_serverRef_t **cm_GetVolServers(cm_volume_t *volp, afs_uint32 volume, cm_user_t *userp, cm_req_t *reqp)
{
cm_serverRef_t **serverspp;
- cm_serverRef_t *current;;
+ cm_serverRef_t *current;
+ int firstTry = 1;
+ start:
lock_ObtainWrite(&cm_serverLock);
- if (volume == volp->rwID)
- serverspp = &volp->rwServersp;
- else if (volume == volp->roID)
- serverspp = &volp->roServersp;
- else if (volume == volp->bkID)
- serverspp = &volp->bkServersp;
- else
- osi_panic("bad volume ID in cm_GetVolServers", __FILE__, __LINE__);
-
- for (current = *serverspp; current; current = current->next)
+ if (volume == volp->vol[RWVOL].ID)
+ serverspp = &volp->vol[RWVOL].serversp;
+ else if (volume == volp->vol[ROVOL].ID)
+ serverspp = &volp->vol[ROVOL].serversp;
+ else if (volume == volp->vol[BACKVOL].ID)
+ serverspp = &volp->vol[BACKVOL].serversp;
+ else {
+ lock_ReleaseWrite(&cm_serverLock);
+ if (firstTry) {
+ afs_int32 code;
+ firstTry = 0;
+ lock_ObtainWrite(&volp->rw);
+ volp->flags |= CM_VOLUMEFLAG_RESET;
+ code = cm_UpdateVolumeLocation(volp->cellp, userp, reqp, volp);
+ lock_ReleaseWrite(&volp->rw);
+ if (code == 0)
+ goto start;
+ }
+ return NULL;
+ }
+
+ /*
+ * Increment the refCount on deleted items as well.
+ * They will be freed by cm_FreeServerList when they get to zero
+ */
+ for (current = *serverspp; current; current = current->next)
current->refCount++;
lock_ReleaseWrite(&cm_serverLock);
void cm_PutVolume(cm_volume_t *volp)
{
- lock_ObtainWrite(&cm_volumeLock);
- osi_assert(volp->refCount-- > 0);
- lock_ReleaseWrite(&cm_volumeLock);
+ afs_int32 refCount = InterlockedDecrement(&volp->refCount);
+ osi_assertx(refCount >= 0, "cm_volume_t refCount underflow has occurred");
}
/* return the read-only volume, if there is one, or the read-write volume if
*/
long cm_GetROVolumeID(cm_volume_t *volp)
{
- long id;
+ long id;
- lock_ObtainMutex(&volp->mx);
- if (volp->roID && volp->roServersp)
- id = volp->roID;
- else
- id = volp->rwID;
- lock_ReleaseMutex(&volp->mx);
+ lock_ObtainRead(&volp->rw);
+ if (volp->vol[ROVOL].ID && volp->vol[ROVOL].serversp)
+ id = volp->vol[ROVOL].ID;
+ else
+ id = volp->vol[RWVOL].ID;
+ lock_ReleaseRead(&volp->rw);
- return id;
+ return id;
}
-void cm_CheckVolumes(void)
+void cm_RefreshVolumes(void)
{
- cm_volume_t *volp;
+ cm_volume_t *volp;
+ cm_scache_t *scp;
+ afs_int32 refCount;
- cm_data.mountRootGen = time(NULL);
- lock_ObtainWrite(&cm_volumeLock);
- for (volp = cm_data.allVolumesp; volp; volp=volp->nextp) {
- volp->refCount++;
- lock_ReleaseWrite(&cm_volumeLock);
- lock_ObtainMutex(&volp->mx);
+ cm_data.mountRootGen = time(NULL);
- volp->flags |= CM_VOLUMEFLAG_RESET;
+ /* force a re-loading of volume data from the vldb */
+ lock_ObtainRead(&cm_volumeLock);
+ for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
+ InterlockedIncrement(&volp->refCount);
+ lock_ReleaseRead(&cm_volumeLock);
- lock_ReleaseMutex(&volp->mx);
- lock_ObtainWrite(&cm_volumeLock);
- osi_assert(volp->refCount-- > 0);
- }
- lock_ReleaseWrite(&cm_volumeLock);
+ lock_ObtainWrite(&volp->rw);
+ volp->flags |= CM_VOLUMEFLAG_RESET;
+ lock_ReleaseWrite(&volp->rw);
+
+ lock_ObtainRead(&cm_volumeLock);
+ refCount = InterlockedDecrement(&volp->refCount);
+ osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
+ }
+ lock_ReleaseRead(&cm_volumeLock);
+
+ /* force mount points to be re-evaluated so that
+ * if the volume location has changed we will pick
+ * that up
+ */
+ for ( scp = cm_data.scacheLRUFirstp;
+ scp;
+ scp = (cm_scache_t *) osi_QNext(&scp->q)) {
+ if ( scp->fileType == CM_SCACHETYPE_MOUNTPOINT
+#ifdef AFS_FREELANCE_CLIENT
+ && !(scp->fid.cell == AFS_FAKE_ROOT_CELL_ID && scp->fid.volume == AFS_FAKE_ROOT_VOL_ID)
+#endif
+ ) {
+ lock_ObtainWrite(&scp->rw);
+ scp->mountPointStringp[0] = '\0';
+ lock_ReleaseWrite(&scp->rw);
+ }
+ }
+
+}
+
+void
+cm_CheckOfflineVolumeState(cm_volume_t *volp, cm_vol_state_t *statep, afs_uint32 volID,
+ afs_uint32 *onlinep, afs_uint32 *volumeUpdatedp)
+{
+ cm_conn_t *connp;
+ long code;
+ AFSFetchVolumeStatus volStat;
+ char *Name;
+ char *OfflineMsg;
+ char *MOTD;
+ cm_req_t req;
+ struct rx_connection * rxconnp;
+ char volName[32];
+ char offLineMsg[256];
+ char motd[256];
+ long alldown, alldeleted;
+ cm_serverRef_t *serversp;
+
+ Name = volName;
+ OfflineMsg = offLineMsg;
+ MOTD = motd;
+
+ if (statep->ID != 0 && (!volID || volID == statep->ID)) {
+ if (!statep->serversp && !(*volumeUpdatedp)) {
+ cm_InitReq(&req);
+ code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
+ *volumeUpdatedp = 1;
+ }
+
+ if (statep->serversp) {
+ alldown = 1;
+ alldeleted = 1;
+ for (serversp = statep->serversp; serversp; serversp = serversp->next) {
+ if (serversp->status == srv_deleted)
+ continue;
+
+ alldeleted = 0;
+ *onlinep = 1;
+ alldown = 0;
+
+ if (serversp->status == srv_busy || serversp->status == srv_offline)
+ serversp->status = srv_not_busy;
+ }
+
+ if (alldeleted && !(*volumeUpdatedp)) {
+ cm_InitReq(&req);
+ code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
+ *volumeUpdatedp = 1;
+ }
+
+ if (statep->state == vl_busy || statep->state == vl_offline || statep->state == vl_unknown ||
+ (!alldown && statep->state == vl_alldown)) {
+ cm_InitReq(&req);
+
+ lock_ReleaseWrite(&volp->rw);
+ do {
+ code = cm_ConnFromVolume(volp, statep->ID, cm_rootUserp, &req, &connp);
+ if (code)
+ continue;
+
+ rxconnp = cm_GetRxConn(connp);
+ code = RXAFS_GetVolumeStatus(rxconnp, statep->ID,
+ &volStat, &Name, &OfflineMsg, &MOTD);
+ rx_PutConnection(rxconnp);
+
+ } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
+ code = cm_MapRPCError(code, &req);
- /* We should also refresh cached mount points */
+ lock_ObtainWrite(&volp->rw);
+ if (code == 0 && volStat.Online) {
+ cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_online);
+ statep->state = vl_online;
+ *onlinep = 1;
+ } else if (code == CM_ERROR_NOACCESS) {
+ cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_unknown);
+ statep->state = vl_unknown;
+ *onlinep = 1;
+ }
+ } else if (alldown && statep->state != vl_alldown) {
+ cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
+ statep->state = vl_alldown;
+ }
+ } else if (statep->state != vl_alldown) {
+ cm_VolumeStatusNotification(volp, statep->ID, statep->state, vl_alldown);
+ statep->state = vl_alldown;
+ }
+ }
+}
+
+/* The return code is 0 if the volume is not online and
+ * 1 if the volume is online
+ */
+long
+cm_CheckOfflineVolume(cm_volume_t *volp, afs_uint32 volID)
+{
+ long code;
+ cm_req_t req;
+ afs_uint32 online = 0;
+ afs_uint32 volumeUpdated = 0;
+
+ lock_ObtainWrite(&volp->rw);
+
+ if (volp->flags & CM_VOLUMEFLAG_RESET) {
+ cm_InitReq(&req);
+ code = cm_UpdateVolumeLocation(volp->cellp, cm_rootUserp, &req, volp);
+ volumeUpdated = 1;
+ }
+
+ cm_CheckOfflineVolumeState(volp, &volp->vol[RWVOL], volID, &online, &volumeUpdated);
+ cm_CheckOfflineVolumeState(volp, &volp->vol[ROVOL], volID, &online, &volumeUpdated);
+ cm_CheckOfflineVolumeState(volp, &volp->vol[BACKVOL], volID, &online, &volumeUpdated);
+
+ lock_ReleaseWrite(&volp->rw);
+ return online;
+}
+
+
+/*
+ * called from the Daemon thread.
+ * when checking the offline status, check those of the most recently used volumes first.
+ */
+void cm_CheckOfflineVolumes(void)
+{
+ cm_volume_t *volp;
+ afs_int32 refCount;
+ extern int daemon_ShutdownFlag;
+ extern int powerStateSuspended;
+
+ lock_ObtainRead(&cm_volumeLock);
+ for (volp = cm_data.volumeLRULastp;
+ volp && !daemon_ShutdownFlag && !powerStateSuspended;
+ volp=(cm_volume_t *) osi_QPrev(&volp->q)) {
+ if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
+ InterlockedIncrement(&volp->refCount);
+ lock_ReleaseRead(&cm_volumeLock);
+ cm_CheckOfflineVolume(volp, 0);
+ lock_ObtainRead(&cm_volumeLock);
+ refCount = InterlockedDecrement(&volp->refCount);
+ osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
+ }
+ }
+ lock_ReleaseRead(&cm_volumeLock);
+}
+
+
+static void
+cm_UpdateVolumeStatusInt(cm_volume_t *volp, struct cm_vol_state *statep)
+{
+ enum volstatus newStatus;
+ cm_serverRef_t *tsrp;
+ cm_server_t *tsp;
+ int someBusy = 0, someOffline = 0, allOffline = 1, allBusy = 1, allDown = 1;
+ char addr[16];
+
+ if (!volp || !statep) {
+#ifdef DEBUG
+ DebugBreak();
+#endif
+ return;
+ }
+
+ lock_ObtainWrite(&cm_serverLock);
+ for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
+ tsp = tsrp->server;
+ sprintf(addr, "%d.%d.%d.%d",
+ ((tsp->addr.sin_addr.s_addr & 0xff)),
+ ((tsp->addr.sin_addr.s_addr & 0xff00)>> 8),
+ ((tsp->addr.sin_addr.s_addr & 0xff0000)>> 16),
+ ((tsp->addr.sin_addr.s_addr & 0xff000000)>> 24));
+
+ if (tsrp->status == srv_deleted) {
+ osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s deleted",
+ statep->ID, osi_LogSaveString(afsd_logp,addr));
+ continue;
+ }
+ if (tsp) {
+ cm_GetServerNoLock(tsp);
+ if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
+ allDown = 0;
+ if (tsrp->status == srv_busy) {
+ osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s busy",
+ statep->ID, osi_LogSaveString(afsd_logp,addr));
+ allOffline = 0;
+ someBusy = 1;
+ } else if (tsrp->status == srv_offline) {
+ osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s offline",
+ statep->ID, osi_LogSaveString(afsd_logp,addr));
+ allBusy = 0;
+ someOffline = 1;
+ } else {
+ osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s online",
+ statep->ID, osi_LogSaveString(afsd_logp,addr));
+ allOffline = 0;
+ allBusy = 0;
+ }
+ } else {
+ osi_Log2(afsd_logp, "cm_UpdateVolumeStatusInt volume %d server reference %s down",
+ statep->ID, osi_LogSaveString(afsd_logp,addr));
+ }
+ cm_PutServerNoLock(tsp);
+ }
+ }
+ lock_ReleaseWrite(&cm_serverLock);
+
+ osi_Log5(afsd_logp, "cm_UpdateVolumeStatusInt allDown %d allBusy %d someBusy %d someOffline %d allOffline %d",
+ allDown, allBusy, someBusy, someOffline, allOffline);
+
+ if (allDown)
+ newStatus = vl_alldown;
+ else if (allBusy || (someBusy && someOffline))
+ newStatus = vl_busy;
+ else if (allOffline)
+ newStatus = vl_offline;
+ else
+ newStatus = vl_online;
+
+ if (statep->ID && statep->state != newStatus)
+ cm_VolumeStatusNotification(volp, statep->ID, statep->state, newStatus);
+
+ statep->state = newStatus;
+}
+
+void
+cm_UpdateVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
+{
+
+ if (volp->vol[RWVOL].ID == volID) {
+ cm_UpdateVolumeStatusInt(volp, &volp->vol[RWVOL]);
+ } else if (volp->vol[ROVOL].ID == volID) {
+ cm_UpdateVolumeStatusInt(volp, &volp->vol[ROVOL]);
+ } else if (volp->vol[BACKVOL].ID == volID) {
+ cm_UpdateVolumeStatusInt(volp, &volp->vol[BACKVOL]);
+ } else {
+ /*
+ * If we are called with volID == 0 then something has gone wrong.
+ * Most likely a race occurred in the server volume list maintenance.
+ * Since we don't know which volume's status should be updated,
+ * just update all of them that are known to exist. Better to be
+ * correct than fast.
+ */
+ afs_uint32 volType;
+ for ( volType = RWVOL; volType < NUM_VOL_TYPES; volType++) {
+ if (volp->vol[volType].ID != 0)
+ cm_UpdateVolumeStatusInt(volp, &volp->vol[volType]);
+ }
+ }
}
/*
** Finds all volumes that reside on this server and reorders their
** RO list according to the changed rank of server.
*/
-void cm_ChangeRankVolume(cm_server_t *tsp)
-{
- int code;
- cm_volume_t* volp;
-
- /* find volumes which might have RO copy on server*/
- lock_ObtainWrite(&cm_volumeLock);
- for(volp = cm_data.allVolumesp; volp; volp=volp->nextp)
- {
- code = 1 ; /* assume that list is unchanged */
- volp->refCount++;
- lock_ReleaseWrite(&cm_volumeLock);
- lock_ObtainMutex(&volp->mx);
-
- if ((tsp->cellp==volp->cellp) && (volp->roServersp))
- code =cm_ChangeRankServer(&volp->roServersp, tsp);
-
- /* this volume list was changed */
- if ( !code )
- cm_RandomizeServer(&volp->roServersp);
-
- lock_ReleaseMutex(&volp->mx);
- lock_ObtainWrite(&cm_volumeLock);
- osi_assert(volp->refCount-- > 0);
+void cm_ChangeRankVolume(cm_server_t *tsp)
+{
+ int code;
+ cm_volume_t* volp;
+ afs_int32 refCount;
+
+ /* find volumes which might have RO copy on server*/
+ lock_ObtainRead(&cm_volumeLock);
+ for(volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
+ {
+ code = 1 ; /* assume that list is unchanged */
+ InterlockedIncrement(&volp->refCount);
+ lock_ReleaseRead(&cm_volumeLock);
+ lock_ObtainWrite(&volp->rw);
+
+ if ((tsp->cellp==volp->cellp) && (volp->vol[ROVOL].serversp))
+ code =cm_ChangeRankServer(&volp->vol[ROVOL].serversp, tsp);
+
+ /* this volume list was changed */
+ if ( !code )
+ cm_RandomizeServer(&volp->vol[ROVOL].serversp);
+
+ lock_ReleaseWrite(&volp->rw);
+ lock_ObtainRead(&cm_volumeLock);
+ refCount = InterlockedDecrement(&volp->refCount);
+ osi_assertx(refCount >= 0, "cm_volume_t refCount underflow");
+ }
+ lock_ReleaseRead(&cm_volumeLock);
+}
+
+/* dump all volumes that have reference count > 0 to a file.
+ * cookie is used to identify this batch for easy parsing,
+ * and it a string provided by a caller
+ */
+int cm_DumpVolumes(FILE *outputFile, char *cookie, int lock)
+{
+ int zilch;
+ cm_volume_t *volp;
+ char output[1024];
+
+ if (lock) {
+ lock_ObtainRead(&cm_scacheLock);
+ lock_ObtainRead(&cm_volumeLock);
+ }
+
+ sprintf(output, "%s - dumping volumes - cm_data.currentVolumes=%d, cm_data.maxVolumes=%d\r\n", cookie, cm_data.currentVolumes, cm_data.maxVolumes);
+ WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
+
+ for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp)
+ {
+ sprintf(output, "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x refCount=%u\r\n",
+ cookie, volp, volp->cellp->name, volp->namep, volp->vol[RWVOL].ID, volp->vol[ROVOL].ID, volp->vol[BACKVOL].ID, volp->flags,
+ volp->refCount);
+ WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
+ }
+ sprintf(output, "%s - Done dumping volumes.\r\n", cookie);
+ WriteFile(outputFile, output, (DWORD)strlen(output), &zilch, NULL);
+
+ if (lock) {
+ lock_ReleaseRead(&cm_volumeLock);
+ lock_ReleaseRead(&cm_scacheLock);
+ }
+ return (0);
+}
+
+
+/*
+ * String hash function used by SDBM project.
+ * It was chosen because it is fast and provides
+ * decent coverage.
+ */
+afs_uint32 SDBMHash(const char * str)
+{
+ afs_uint32 hash = 0;
+ size_t i, len;
+
+ if (str == NULL)
+ return 0;
+
+ for(i = 0, len = strlen(str); i < len; i++)
+ {
+ hash = str[i] + (hash << 6) + (hash << 16) - hash;
+ }
+
+ return (hash & 0x7FFFFFFF);
+}
+
+/* call with volume write-locked and mutex held */
+void cm_AddVolumeToNameHashTable(cm_volume_t *volp)
+{
+ int i;
+
+ if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
+ return;
+
+ i = CM_VOLUME_NAME_HASH(volp->namep);
+
+ volp->nameNextp = cm_data.volumeNameHashTablep[i];
+ cm_data.volumeNameHashTablep[i] = volp;
+ volp->flags |= CM_VOLUMEFLAG_IN_HASH;
+}
+
+/* call with volume write-locked and mutex held */
+void cm_RemoveVolumeFromNameHashTable(cm_volume_t *volp)
+{
+ cm_volume_t **lvolpp;
+ cm_volume_t *tvolp;
+ int i;
+
+ if (volp->flags & CM_VOLUMEFLAG_IN_HASH) {
+ /* hash it out first */
+ i = CM_VOLUME_NAME_HASH(volp->namep);
+ for (lvolpp = &cm_data.volumeNameHashTablep[i], tvolp = cm_data.volumeNameHashTablep[i];
+ tvolp;
+ lvolpp = &tvolp->nameNextp, tvolp = tvolp->nameNextp) {
+ if (tvolp == volp) {
+ *lvolpp = volp->nameNextp;
+ volp->flags &= ~CM_VOLUMEFLAG_IN_HASH;
+ volp->nameNextp = NULL;
+ break;
+ }
}
- lock_ReleaseWrite(&cm_volumeLock);
+ }
+}
+
+/* call with volume write-locked and mutex held */
+void cm_AddVolumeToIDHashTable(cm_volume_t *volp, afs_uint32 volType)
+{
+ int i;
+ struct cm_vol_state * statep;
+
+ statep = cm_VolumeStateByType(volp, volType);
+
+ if (statep->flags & CM_VOLUMEFLAG_IN_HASH)
+ return;
+
+ i = CM_VOLUME_ID_HASH(statep->ID);
+
+ switch (volType) {
+ case RWVOL:
+ statep->nextp = cm_data.volumeRWIDHashTablep[i];
+ cm_data.volumeRWIDHashTablep[i] = volp;
+ break;
+ case ROVOL:
+ statep->nextp = cm_data.volumeROIDHashTablep[i];
+ cm_data.volumeROIDHashTablep[i] = volp;
+ break;
+ case BACKVOL:
+ statep->nextp = cm_data.volumeBKIDHashTablep[i];
+ cm_data.volumeBKIDHashTablep[i] = volp;
+ break;
+ }
+ statep->flags |= CM_VOLUMEFLAG_IN_HASH;
+}
+
+
+/* call with volume write-locked and mutex held */
+void cm_RemoveVolumeFromIDHashTable(cm_volume_t *volp, afs_uint32 volType)
+{
+ cm_volume_t **lvolpp;
+ cm_volume_t *tvolp;
+ struct cm_vol_state * statep;
+ int i;
+
+ statep = cm_VolumeStateByType(volp, volType);
+
+ if (statep->flags & CM_VOLUMEFLAG_IN_HASH) {
+ /* hash it out first */
+ i = CM_VOLUME_ID_HASH(statep->ID);
+
+ switch (volType) {
+ case RWVOL:
+ lvolpp = &cm_data.volumeRWIDHashTablep[i];
+ tvolp = cm_data.volumeRWIDHashTablep[i];
+ break;
+ case ROVOL:
+ lvolpp = &cm_data.volumeROIDHashTablep[i];
+ tvolp = cm_data.volumeROIDHashTablep[i];
+ break;
+ case BACKVOL:
+ lvolpp = &cm_data.volumeBKIDHashTablep[i];
+ tvolp = cm_data.volumeBKIDHashTablep[i];
+ break;
+ default:
+ osi_assertx(0, "invalid volume type");
+ }
+ do {
+ if (tvolp == volp) {
+ *lvolpp = statep->nextp;
+ statep->flags &= ~CM_VOLUMEFLAG_IN_HASH;
+ statep->nextp = NULL;
+ break;
+ }
+
+ lvolpp = &tvolp->vol[volType].nextp;
+ tvolp = tvolp->vol[volType].nextp;
+ } while(tvolp);
+ }
+}
+
+/* must be called with cm_volumeLock write-locked! */
+void cm_AdjustVolumeLRU(cm_volume_t *volp)
+{
+ if (volp == cm_data.volumeLRULastp)
+ cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
+ if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
+ osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
+ osi_QAdd((osi_queue_t **) &cm_data.volumeLRUFirstp, &volp->q);
+ volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
+ if (!cm_data.volumeLRULastp)
+ cm_data.volumeLRULastp = volp;
+}
+
+/* must be called with cm_volumeLock write-locked! */
+void cm_MoveVolumeToLRULast(cm_volume_t *volp)
+{
+ if (volp == cm_data.volumeLRULastp)
+ return;
+
+ if (volp == cm_data.volumeLRUFirstp)
+ cm_data.volumeLRUFirstp = (cm_volume_t *) osi_QNext(&volp->q);
+ if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE)
+ osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
+ osi_QAddT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
+ volp->flags |= CM_VOLUMEFLAG_IN_LRU_QUEUE;
+ if (!cm_data.volumeLRULastp)
+ cm_data.volumeLRULastp = volp;
+}
+
+/* must be called with cm_volumeLock write-locked! */
+void cm_RemoveVolumeFromLRU(cm_volume_t *volp)
+{
+ if (volp->flags & CM_VOLUMEFLAG_IN_LRU_QUEUE) {
+ if (volp == cm_data.volumeLRULastp)
+ cm_data.volumeLRULastp = (cm_volume_t *) osi_QPrev(&volp->q);
+ osi_QRemoveHT((osi_queue_t **) &cm_data.volumeLRUFirstp, (osi_queue_t **) &cm_data.volumeLRULastp, &volp->q);
+ volp->flags &= ~CM_VOLUMEFLAG_IN_LRU_QUEUE;
+ }
+}
+
+static char * volstatus_str(enum volstatus vs)
+{
+ switch (vs) {
+ case vl_online:
+ return "online";
+ case vl_busy:
+ return "busy";
+ case vl_offline:
+ return "offline";
+ case vl_alldown:
+ return "alldown";
+ default:
+ return "unknown";
+ }
+}
+
+void cm_VolumeStatusNotification(cm_volume_t * volp, afs_uint32 volID, enum volstatus old, enum volstatus new)
+{
+ char volstr[CELL_MAXNAMELEN + VL_MAXNAMELEN]="";
+ char *ext = "";
+
+ if (volID == volp->vol[RWVOL].ID)
+ ext = "";
+ else if (volID == volp->vol[ROVOL].ID)
+ ext = ".readonly";
+ else if (volID == volp->vol[BACKVOL].ID)
+ ext = ".backup";
+ else
+ ext = ".nomatch";
+ snprintf(volstr, sizeof(volstr), "%s:%s%s", volp->cellp->name, volp->namep, ext);
+
+ osi_Log4(afsd_logp, "VolumeStatusNotification: %-48s [%10u] (%s -> %s)",
+ osi_LogSaveString(afsd_logp, volstr), volID, volstatus_str(old), volstatus_str(new));
+
+ cm_VolStatus_Change_Notification(volp->cellp->cellID, volID, new);
+}
+
+enum volstatus cm_GetVolumeStatus(cm_volume_t *volp, afs_uint32 volID)
+{
+ cm_vol_state_t * statep = cm_VolumeStateByID(volp, volID);
+ if (statep)
+ return statep->state;
+ else
+ return vl_unknown;
+}
+
+/* Renew .readonly volume callbacks that are more than
+ * 30 minutes old. (A volume callback is issued for 2 hours.)
+ */
+void
+cm_VolumeRenewROCallbacks(void)
+{
+ cm_volume_t * volp;
+ time_t minexp = time(NULL) + 90 * 60;
+ extern int daemon_ShutdownFlag;
+ extern int powerStateSuspended;
+
+ lock_ObtainRead(&cm_volumeLock);
+ for (volp = cm_data.allVolumesp;
+ volp && !daemon_ShutdownFlag && !powerStateSuspended;
+ volp=volp->allNextp) {
+ if ( volp->cbExpiresRO > 0 && volp->cbExpiresRO < minexp) {
+ cm_req_t req;
+ cm_fid_t fid;
+ cm_scache_t * scp;
+
+ cm_SetFid(&fid, volp->cellp->cellID, volp->vol[ROVOL].ID, 1, 1);
+
+ cm_InitReq(&req);
+
+ lock_ReleaseRead(&cm_volumeLock);
+ if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
+ lock_ObtainWrite(&scp->rw);
+ cm_GetCallback(scp, cm_rootUserp, &req, 1);
+ lock_ReleaseWrite(&scp->rw);
+ cm_ReleaseSCache(scp);
+ }
+ lock_ObtainRead(&cm_volumeLock);
+ }
+ }
+ lock_ReleaseRead(&cm_volumeLock);
+}
+
+cm_vol_state_t *
+cm_VolumeStateByType(cm_volume_t *volp, afs_uint32 volType)
+{
+ return &volp->vol[volType];
+}
+
+cm_vol_state_t *
+cm_VolumeStateByID(cm_volume_t *volp, afs_uint32 id)
+{
+ cm_vol_state_t * statep = NULL;
+
+ if (id == volp->vol[RWVOL].ID)
+ statep = &volp->vol[RWVOL];
+ else if (id == volp->vol[ROVOL].ID)
+ statep = &volp->vol[ROVOL];
+ else if (id == volp->vol[BACKVOL].ID)
+ statep = &volp->vol[BACKVOL];
+
+ return(statep);
+}
+
+cm_vol_state_t *
+cm_VolumeStateByName(cm_volume_t *volp, char *volname)
+{
+ size_t len = strlen(volname);
+ cm_vol_state_t *statep;
+
+ if (cm_stricmp_utf8N(".readonly", &volname[len-9]) == 0)
+ statep = &volp->vol[ROVOL];
+ else if (cm_stricmp_utf8N(".backup", &volname[len-7]) == 0)
+ statep = &volp->vol[BACKVOL];
+ else
+ statep = &volp->vol[RWVOL];
+
+ return statep;
+}
+
+afs_int32
+cm_VolumeType(cm_volume_t *volp, afs_uint32 id)
+{
+ if (id == volp->vol[RWVOL].ID)
+ return(RWVOL);
+ else if (id == volp->vol[ROVOL].ID)
+ return(ROVOL);
+ else if (id == volp->vol[BACKVOL].ID)
+ return (BACKVOL);
+
+ return -1;
}
git://git.openafs.org / openafs.git / blobdiff