#include <afs/stds.h>
#include <windows.h>
-#include <string.h>
-#include <malloc.h>
#include <winsock2.h>
#include <nb30.h>
+#include <string.h>
+#include <malloc.h>
+#include "afsd.h"
#include <osi.h>
#include <rx/rx.h>
-#include "afsd.h"
-
osi_rwlock_t cm_volumeLock;
-cm_volume_t *cm_allVolumesp;
-void cm_InitVolume(void)
+long
+cm_ValidateVolume(void)
+{
+ cm_volume_t * volp;
+ afs_uint32 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");
+ return -1;
+ }
+ if ( volp->cellp && volp->cellp->magic != CM_CELL_MAGIC ) {
+ afsi_log("cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC");
+ fprintf(stderr, "cm_ValidateVolume failure: volp->cellp->magic != CM_CELL_MAGIC\n");
+ return -2;
+ }
+ 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 ||
+ count > cm_data.maxVolumes ) {
+ afsi_log("cm_ValidateVolume failure: cm_data.allVolumep loop detected");
+ fprintf(stderr, "cm_ValidateVolume failure: cm_data.allVolumep loop detected\n");
+ return -4;
+ }
+ }
+
+ if ( count != cm_data.currentVolumes ) {
+ afsi_log("cm_ValidateVolume failure: count != cm_data.currentVolumes");
+ fprintf(stderr, "cm_ValidateVolume failure: count != cm_data.currentVolumes\n");
+ return -5;
+ }
+
+ return 0;
+}
+
+long
+cm_ShutdownVolume(void)
+{
+ cm_volume_t * volp;
+
+ for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
+
+ if (volp->rw.ID)
+ cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_alldown);
+ if (volp->ro.ID)
+ cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_alldown);
+ if (volp->bk.ID)
+ cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_alldown);
+ volp->cbExpiresRO = 0;
+ lock_FinalizeMutex(&volp->mx);
+ }
+
+ return 0;
+}
+
+void cm_InitVolume(int newFile, long maxVols)
{
- static osi_once_t once;
- if (osi_Once(&once)) {
- lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock");
- cm_allVolumesp = NULL;
- osi_EndOnce(&once);
+ static osi_once_t once;
+
+ if (osi_Once(&once)) {
+ lock_InitializeRWLock(&cm_volumeLock, "cm global volume lock");
+
+ 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->allNextp) {
+ lock_InitializeMutex(&volp->mx, "cm_volume_t mutex");
+ volp->flags |= CM_VOLUMEFLAG_RESET;
+ volp->rw.state = vl_unknown;
+ volp->rw.serversp = NULL;
+ volp->ro.state = vl_unknown;
+ volp->ro.serversp = NULL;
+ volp->bk.state = vl_unknown;
+ volp->bk.serversp = NULL;
+ if (volp->rw.ID)
+ cm_VolumeStatusNotification(volp, volp->rw.ID, vl_alldown, volp->rw.state);
+ if (volp->ro.ID)
+ cm_VolumeStatusNotification(volp, volp->ro.ID, vl_alldown, volp->ro.state);
+ if (volp->bk.ID)
+ cm_VolumeStatusNotification(volp, volp->bk.ID, vl_alldown, volp->bk.state);
+ volp->cbExpiresRO = 0;
+ }
}
+ 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).
+ *
+ *
+ * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:38 (JHutz)
+ * Yes, we support multihomed fileservers.
+ * Since before we got the code from IBM.
+ * But to find out about multiple addresses on a multihomed server, you need
+ * to use VL_GetEntryByNameU and VL_GetAddrsU. If you use
+ * VL_GetEntryByNameO or VL_GetEntryByNameN, the vlserver just gives you one
+ * address per server.
+ * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:39 (JHutz)
+ * see src/afs/afs_volume.c, paying particular attention to
+ * afs_NewVolumeByName, afs_SetupVolume, and InstallUVolumeEntry
+ * shadow / openafs / jaltman {ANDREW.CMU.EDU} 01:40 (Jeffrey Altman)
+ * thanks. The windows client calls the 0 versions.
+ * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:51 (JHutz)
+ * Oh. Ew.
+ * By not using the N versions, you only get up to 8 sites instead of 13.
+ * By not using the U versions, you don't get to know about multihomed serve
+ * shadow / openafs / jhutz@CS.CMU.EDU {ANDREW.CMU.EDU} 01:52 (JHutz)
+ * Of course, you probably want to support the older versions for backward
+ * compatibility. If you do that, you need to call the newest interface
+ * first, and fall back to successively older versions if you get
+ * RXGEN_OPCODE.
*/
+#define MULTIHOMED 1
long cm_UpdateVolume(struct cm_cell *cellp, cm_user_t *userp, cm_req_t *reqp,
- cm_volume_t *volp)
+ cm_volume_t *volp)
{
- cm_conn_t *connp;
- int i;
- cm_serverRef_t *tsrp;
- cm_server_t *tsp;
- struct sockaddr_in tsockAddr;
- long tflags;
- u_long tempAddr;
- struct vldbentry vldbEntry; /* don't use NVLDB yet; they're not common */
- int ROcount = 0;
- long code;
-
- /* clear out old bindings */
- while (tsrp = volp->rwServersp) {
- volp->rwServersp = tsrp->next;
- cm_PutServer(tsrp->server);
- free(tsrp);
- }
- while (tsrp = volp->roServersp) {
- volp->roServersp = tsrp->next;
- cm_PutServer(tsrp->server);
- free(tsrp);
- }
- while (tsrp = volp->bkServersp) {
- volp->bkServersp = tsrp->next;
- cm_PutServer(tsrp->server);
- free(tsrp);
- }
+ cm_conn_t *connp;
+ int i, j, k;
+ cm_serverRef_t *tsrp;
+ cm_server_t *tsp;
+ struct sockaddr_in tsockAddr;
+ long tflags;
+ u_long tempAddr;
+ struct vldbentry vldbEntry;
+ struct nvldbentry nvldbEntry;
+#ifdef MULTIHOMED
+ struct uvldbentry uvldbEntry;
+#endif
+ 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
+
+ /* clear out old bindings */
+ if (volp->rw.serversp)
+ cm_FreeServerList(&volp->rw.serversp, CM_FREESERVERLIST_DELETE);
+ if (volp->ro.serversp)
+ cm_FreeServerList(&volp->ro.serversp, CM_FREESERVERLIST_DELETE);
+ if (volp->bk.serversp)
+ cm_FreeServerList(&volp->bk.serversp, CM_FREESERVERLIST_DELETE);
+
+#ifdef AFS_FREELANCE_CLIENT
+ if ( cellp->cellID == AFS_FAKE_ROOT_CELL_ID && volp->rw.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;
+ method = 0;
+ } else
+#endif
+ {
+ 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", volp->cellp->name, volp->namep);
do {
- code = cm_ConnByMServers(cellp->vlServersp, userp, reqp,
- &connp);
- if (code) continue;
- osi_Log1(afsd_logp, "CALL VL_GetEntryByNameO name %s",
- volp->namep);
+ code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
+ if (code)
+ continue;
+#ifdef MULTIHOMED
+ code = VL_GetEntryByNameU(connp->callp, volp->namep, &uvldbEntry);
+ method = 2;
+ if ( code == RXGEN_OPCODE )
+#endif
+ {
+ code = VL_GetEntryByNameN(connp->callp, volp->namep, &nvldbEntry);
+ method = 1;
+ }
+ if ( code == RXGEN_OPCODE ) {
code = VL_GetEntryByNameO(connp->callp, volp->namep, &vldbEntry);
- } while (cm_Analyze(connp, userp, reqp, NULL, NULL, NULL, code));
+ method = 0;
+ }
+ } 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);
+ else
+ osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
+ volp->cellp->name, volp->namep);
+ }
- if (code == 0) {
- /* decode the response */
- lock_ObtainWrite(&cm_volumeLock);
- if (vldbEntry.flags & VLF_RWEXISTS)
- volp->rwID = vldbEntry.volumeId[0];
- else
- volp->rwID = 0;
- if (vldbEntry.flags & VLF_ROEXISTS)
- volp->roID = vldbEntry.volumeId[1];
- else
- volp->roID = 0;
- if (vldbEntry.flags & VLF_BACKEXISTS)
- volp->bkID = vldbEntry.volumeId[2];
- else
- volp->bkID = 0;
- lock_ReleaseWrite(&cm_volumeLock);
- for(i=0; i<vldbEntry.nServers; i++) {
- /* create a server entry */
- tflags = vldbEntry.serverFlags[i];
- if (tflags & VLSF_DONTUSE) continue;
- tsockAddr.sin_family = AF_INET;
- tempAddr = htonl(vldbEntry.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 this server was created by fs setserverprefs */
- if ( !tsp->cellp )
- tsp->cellp = cellp;
-
- osi_assert(tsp != NULL);
-
- /* and add it to the list(s). */
- /*
- * Each call to cm_NewServerRef() increments the
- * ref count of tsp. These reference will be dropped,
- * if and when the volume is reset; see reset code
- * earlier in this function.
- */
- if ((tflags & VLSF_RWVOL)
- && (vldbEntry.flags & VLF_RWEXISTS)) {
- tsrp = cm_NewServerRef(tsp);
- tsrp->next = volp->rwServersp;
- volp->rwServersp = tsrp;
- }
- if ((tflags & VLSF_ROVOL)
- && (vldbEntry.flags & VLF_ROEXISTS)) {
- tsrp = cm_NewServerRef(tsp);
- cm_InsertServerList(&volp->roServersp, tsrp);
- ROcount++;
- }
- /* We don't use VLSF_BACKVOL !?! */
- if ((tflags & VLSF_RWVOL)
- && (vldbEntry.flags & VLF_BACKEXISTS)) {
- tsrp = cm_NewServerRef(tsp);
- tsrp->next = volp->bkServersp;
- volp->bkServersp = tsrp;
- }
- /* Drop the reference obtained by cm_FindServer() */
- cm_PutServer(tsp);
+ /* 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->rw.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,
+ osi_LogSaveString(afsd_logp,name));
+ do {
+ code = cm_ConnByMServers(cellp->vlServersp, userp, reqp, &connp);
+ if (code)
+ continue;
+#ifdef MULTIHOMED
+ code = VL_GetEntryByNameU(connp->callp, name, &uvldbEntry);
+ method = 2;
+ if ( code == RXGEN_OPCODE )
+#endif
+ {
+ code = VL_GetEntryByNameN(connp->callp, name, &nvldbEntry);
+ method = 1;
+ }
+ if ( code == RXGEN_OPCODE ) {
+ code = VL_GetEntryByNameO(connp->callp, name, &vldbEntry);
+ method = 0;
+ }
+ } 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, osi_LogSaveString(afsd_logp,name), code);
+ else
+ osi_Log2(afsd_logp, "CALL VL_GetEntryByName{UNO} name %s:%s SUCCESS",
+ volp->cellp->name, osi_LogSaveString(afsd_logp,name));
+ }
+
+ if (code == 0) {
+ afs_int32 flags;
+ afs_int32 nServers;
+ afs_int32 rwID;
+ afs_int32 roID;
+ afs_int32 bkID;
+ afs_int32 serverNumber[NMAXNSERVERS];
+ afs_int32 serverFlags[NMAXNSERVERS];
+ afs_int32 rwServers_alldown = 1;
+ afs_int32 roServers_alldown = 1;
+ afs_int32 bkServers_alldown = 1;
+ char name[VL_MAXNAMELEN];
+
+#ifdef AFS_FREELANCE_CLIENT
+ if (freelance)
+ rwServers_alldown = 0;
+#endif
+
+ switch ( method ) {
+ case 0:
+ flags = vldbEntry.flags;
+ nServers = vldbEntry.nServers;
+ rwID = vldbEntry.volumeId[0];
+ roID = vldbEntry.volumeId[1];
+ bkID = vldbEntry.volumeId[2];
+ for ( i=0; i<nServers; i++ ) {
+ 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;
+ nServers = nvldbEntry.nServers;
+ rwID = nvldbEntry.volumeId[0];
+ roID = nvldbEntry.volumeId[1];
+ bkID = nvldbEntry.volumeId[2];
+ for ( i=0; i<nServers; i++ ) {
+ 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:
+ flags = uvldbEntry.flags;
+ nServers = uvldbEntry.nServers;
+ rwID = uvldbEntry.volumeId[0];
+ roID = uvldbEntry.volumeId[1];
+ bkID = uvldbEntry.volumeId[2];
+ for ( i=0, j=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;
+ j++;
+ } else {
+ afs_uint32 * addrp, nentries, code, unique;
+ bulkaddrs addrs;
+ ListAddrByAttributes attrs;
+ afsUUID uuid;
+
+ memset((char *)&attrs, 0, sizeof(attrs));
+ attrs.Mask = VLADDR_UUID;
+ attrs.uuid = uvldbEntry.serverNumber[i];
+ memset((char *)&uuid, 0, sizeof(uuid));
+ memset((char *)&addrs, 0, sizeof(addrs));
+
+ do {
+ 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;
+ } while (cm_Analyze(connp, userp, reqp, NULL, NULL, cellp->vlServersp, NULL, code));
+ code = cm_MapVLRPCError(code, reqp);
+ if (code)
+ return code;
+
+ addrp = addrs.bulkaddrs_val;
+ for (k = 0; k < nentries && j < NMAXNSERVERS; j++, k++) {
+ serverFlags[j] = uvldbEntry.serverFlags[i];
+ serverNumber[j] = addrp[k];
+ }
+
+ free(addrs.bulkaddrs_val); /* This is wrong */
}
+ }
+ nServers = j; /* update the server count */
+ strncpy(name, uvldbEntry.name, VL_MAXNAMELEN);
+ name[VL_MAXNAMELEN - 1] = '\0';
+ break;
+#endif
+ }
- /*
- * Randomize RO list
- *
- * If the first n servers have the same ipRank, then we
- * randomly pick one among them and move it to the beginning.
- * We don't bother to re-order the whole list because
- * the rest of the list is used only if the first server is
- * down. We only do this for the RO list; we assume the other
- * lists are length 1.
- */
- if (ROcount > 1) {
- cm_RandomizeServer(&volp->roServersp);
- }
- }
- return code;
+ /* decode the response */
+ lock_ObtainWrite(&cm_volumeLock);
+ 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", volp->namep, name);
+
+ if (volp->flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromNameHashTable(volp);
+
+ strcpy(volp->namep, name);
+
+ cm_AddVolumeToNameHashTable(volp);
+ }
+
+ if (flags & VLF_RWEXISTS) {
+ if (volp->rw.ID != rwID) {
+ if (volp->rw.flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
+ volp->rw.ID = rwID;
+ cm_AddVolumeToIDHashTable(volp, RWVOL);
+ }
+ } else {
+ if (volp->rw.flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
+ volp->rw.ID = 0;
+ }
+ if (flags & VLF_ROEXISTS) {
+ if (volp->ro.ID != roID) {
+ if (volp->ro.flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
+ volp->ro.ID = roID;
+ cm_AddVolumeToIDHashTable(volp, ROVOL);
+ }
+ } else {
+ if (volp->ro.flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
+ volp->ro.ID = 0;
+ }
+ if (flags & VLF_BACKEXISTS) {
+ if (volp->bk.ID != bkID) {
+ if (volp->bk.flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
+ volp->bk.ID = bkID;
+ cm_AddVolumeToIDHashTable(volp, BACKVOL);
+ }
+ } else {
+ if (volp->bk.flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
+ volp->bk.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_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, 0);
+
+ /* if this server was created by fs setserverprefs */
+ if ( !tsp->cellp )
+ tsp->cellp = cellp;
+
+ osi_assertx(tsp != NULL, "null cm_server_t");
+
+ /* and add it to the list(s). */
+ /*
+ * Each call to cm_NewServerRef() increments the
+ * ref count of tsp. These reference will be dropped,
+ * if and when the volume is reset; see reset code
+ * earlier in this function.
+ */
+ if ((tflags & VLSF_RWVOL) && (flags & VLF_RWEXISTS)) {
+ tsrp = cm_NewServerRef(tsp, rwID);
+ cm_InsertServerList(&volp->rw.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, roID);
+ cm_InsertServerList(&volp->ro.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, bkID);
+ cm_InsertServerList(&volp->bk.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);
+ }
+
+ /*
+ * Randomize RO list
+ *
+ * If the first n servers have the same ipRank, then we
+ * randomly pick one among them and move it to the beginning.
+ * We don't bother to re-order the whole list because
+ * the rest of the list is used only if the first server is
+ * down. We only do this for the RO list; we assume the other
+ * lists are length 1.
+ */
+ if (ROcount > 1) {
+ cm_RandomizeServer(&volp->ro.serversp);
+ }
+
+ rwNewstate = rwServers_alldown ? vl_alldown : vl_online;
+ roNewstate = roServers_alldown ? vl_alldown : vl_online;
+ bkNewstate = bkServers_alldown ? vl_alldown : vl_online;
+ } else {
+ rwNewstate = roNewstate = bkNewstate = vl_alldown;
+ }
+
+ if (volp->rw.state != rwNewstate) {
+ if (volp->rw.ID)
+ cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, rwNewstate);
+ volp->rw.state = rwNewstate;
+ }
+ if (volp->ro.state != roNewstate) {
+ if (volp->ro.ID)
+ cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, roNewstate);
+ volp->ro.state = roNewstate;
+ }
+ if (volp->bk.state != bkNewstate) {
+ if (volp->bk.ID)
+ cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, bkNewstate);
+ volp->bk.state = bkNewstate;
+ }
+
+ return code;
}
-long cm_GetVolumeByID(cm_cell_t *cellp, long volumeID, cm_user_t *userp,
- cm_req_t *reqp, cm_volume_t **outVolpp)
+void cm_GetVolume(cm_volume_t *volp)
{
- cm_volume_t *volp;
- char volNameString[100];
- long code;
+ if (volp) {
+ lock_ObtainWrite(&cm_volumeLock);
+ volp->refCount++;
+ lock_ReleaseWrite(&cm_volumeLock);
+ }
+}
- lock_ObtainWrite(&cm_volumeLock);
- for(volp = cm_allVolumesp; volp; volp=volp->nextp) {
- if (cellp == volp->cellp &&
- ((unsigned) volumeID == volp->rwID ||
- (unsigned) volumeID == volp->roID ||
- (unsigned) volumeID == volp->bkID))
- break;
+
+long cm_GetVolumeByID(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;
+#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->rw.ID ||
+ (unsigned) volumeID == volp->ro.ID ||
+ (unsigned) volumeID == volp->bk.ID))
+ break;
+ }
+
+ 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->ro.nextp) {
+ if ( cellp == volp->cellp && volumeID == volp->ro.ID )
+ break;
+ }
+ if (!volp) {
+ /* try RW volumes */
+ for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->rw.nextp) {
+ if ( cellp == volp->cellp && volumeID == volp->rw.ID )
+ break;
}
+ }
+ if (!volp) {
+ /* try BK volumes */
+ for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->bk.nextp) {
+ if ( cellp == volp->cellp && volumeID == volp->bk.ID )
+ break;
+ }
+ }
- /* hold the volume if we found it */
- if (volp) volp->refCount++;
- lock_ReleaseWrite(&cm_volumeLock);
+#ifdef SEARCH_ALL_VOLUMES
+ osi_assertx(volp == volp2, "unexpected cm_vol_t");
+#endif
+
+ lock_ReleaseRead(&cm_volumeLock);
+
+ /* hold the volume if we found it */
+ if (volp)
+ cm_GetVolume(volp);
- /* return it held */
- if (volp) {
- lock_ObtainMutex(&volp->mx);
+ /* return it held */
+ if (volp) {
+ lock_ObtainMutex(&volp->mx);
- 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;
+ code = 0;
+ if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
+ code = cm_UpdateVolume(cellp, userp, reqp, volp);
+ if (code == 0)
+ volp->flags &= ~CM_VOLUMEFLAG_RESET;
}
-
- /* otherwise, we didn't find it so consult the VLDB */
- sprintf(volNameString, "%u", volumeID);
- code = cm_GetVolumeByName(cellp, volNameString, userp, reqp,
- 0, outVolpp);
+ lock_ReleaseMutex(&volp->mx);
+ 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
+ cm_PutVolume(volp);
+
return code;
+ }
+
+ /* otherwise, we didn't find it so consult the VLDB */
+ sprintf(volNameString, "%u", volumeID);
+ code = cm_GetVolumeByName(cellp, volNameString, userp, reqp,
+ flags, outVolpp);
+ return code;
}
+
long cm_GetVolumeByName(struct cm_cell *cellp, char *volumeNamep,
- struct cm_user *userp, struct cm_req *reqp,
- long flags, cm_volume_t **outVolpp)
+ struct cm_user *userp, struct cm_req *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
+ long code = 0;
+ char name[VL_MAXNAMELEN];
+ size_t len;
+ int type;
+ afs_uint32 hash;
- lock_ObtainWrite(&cm_volumeLock);
- for(volp = cm_allVolumesp; volp; volp=volp->nextp) {
- if (cellp == volp->cellp && strcmp(volumeNamep, volp->namep) == 0) {
- break;
- }
- }
-
- /* otherwise, get from VLDB */
- if (!volp) {
- volp = malloc(sizeof(*volp));
- memset(volp, 0, sizeof(*volp));
- volp->cellp = cellp;
- volp->nextp = cm_allVolumesp;
- cm_allVolumesp = volp;
- volp->namep = malloc(strlen(volumeNamep)+1);
- strcpy(volp->namep, volumeNamep);
- lock_InitializeMutex(&volp->mx, "cm_volume_t mutex");
- volp->refCount = 1; /* starts off held */
- volp->flags |= CM_VOLUMEFLAG_RESET;
- }
- else {
- volp->refCount++;
+ 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;
}
-
- /* next should work since no one could have gotten ptr to this structure yet */
+ }
+ 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)) {
+ /* otherwise, get from VLDB */
+
+ 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__);
+
+ lock_ReleaseRead(&cm_volumeLock);
+ lock_ObtainMutex(&volp->mx);
+ 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);
+ if (volp->rw.flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, RWVOL);
+ if (volp->ro.flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, ROVOL);
+ if (volp->bk.flags & CM_VOLUMEFLAG_IN_HASH)
+ cm_RemoveVolumeFromIDHashTable(volp, BACKVOL);
+
+ if (volp->rw.ID)
+ cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_unknown);
+ if (volp->ro.ID)
+ cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_unknown);
+ if (volp->bk.ID)
+ cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_unknown);
+
+ volp->rw.ID = volp->ro.ID = volp->bk.ID = 0;
+ volp->dotdotFid.cell = 0;
+ volp->dotdotFid.volume = 0;
+ volp->dotdotFid.unique = 0;
+ volp->dotdotFid.vnode = 0;
+ volp->dotdotFid.hash = 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_InitializeMutex(&volp->mx, "cm_volume_t mutex");
+ lock_ReleaseRead(&cm_volumeLock);
+ lock_ObtainMutex(&volp->mx);
+ lock_ObtainWrite(&cm_volumeLock);
+ }
+ volp->cellp = cellp;
+ strncpy(volp->namep, name, VL_MAXNAMELEN);
+ volp->namep[VL_MAXNAMELEN-1] = '\0';
+ volp->refCount = 1; /* starts off held */
+ volp->flags = CM_VOLUMEFLAG_RESET;
+ volp->rw.state = volp->ro.state = volp->bk.state = vl_unknown;
+ volp->rw.nextp = volp->ro.nextp = volp->bk.nextp = NULL;
+ volp->rw.flags = volp->ro.flags = volp->bk.flags = 0;
+ volp->cbExpiresRO = 0;
+ cm_AddVolumeToNameHashTable(volp);
lock_ReleaseWrite(&cm_volumeLock);
- lock_ObtainMutex(&volp->mx);
-
- if (volp->flags & CM_VOLUMEFLAG_RESET) {
- code = cm_UpdateVolume(cellp, userp, reqp, volp);
- if (code == 0)
- volp->flags &= ~CM_VOLUMEFLAG_RESET;
- }
+ }
+ else {
+ lock_ReleaseRead(&cm_volumeLock);
+ if (volp) {
+ cm_GetVolume(volp);
+ lock_ObtainMutex(&volp->mx);
+ } else {
+ return CM_ERROR_NOSUCHVOLUME;
+ }
+ }
- if (code == 0)
- *outVolpp = volp;
- lock_ReleaseMutex(&volp->mx);
- return code;
-}
+ /* if we get here we are holding the mutex */
+ if ((volp->flags & CM_VOLUMEFLAG_RESET) && !(flags & CM_GETVOL_FLAG_NO_RESET)) {
+ code = cm_UpdateVolume(cellp, userp, reqp, volp);
+ if (code == 0)
+ volp->flags &= ~CM_VOLUMEFLAG_RESET;
+ }
+ lock_ReleaseMutex(&volp->mx);
+
+ if (code == 0 && (type == BACKVOL && volp->bk.ID == 0 ||
+ type == ROVOL && volp->ro.ID == 0))
+ code = CM_ERROR_NOSUCHVOLUME;
+
+ 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
+ cm_PutVolume(volp);
+
+ 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;
- long code;
+ cm_cell_t *cellp;
+ cm_volume_t *volp;
+#ifdef SEARCH_ALL_VOLUMES
+ cm_volume_t *volp2;
+#endif
+ afs_uint32 hash;
- cellp = cm_FindCellByID(fidp->cell);
- if (!cellp) return;
+ if (!fidp) return;
- /* search for the volume */
- lock_ObtainWrite(&cm_volumeLock);
- for(volp = cm_allVolumesp; volp; volp=volp->nextp) {
- if (cellp == volp->cellp &&
- (fidp->volume == volp->rwID ||
- fidp->volume == volp->roID ||
- fidp->volume == volp->bkID))
- break;
+ cellp = cm_FindCellByID(fidp->cell, 0);
+ if (!cellp) return;
+
+ /* 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->rw.ID ||
+ fidp->volume == volp->ro.ID ||
+ fidp->volume == volp->bk.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.
+ */
+ for ( volp = cm_data.volumeROIDHashTablep[hash]; volp; volp = volp->ro.nextp) {
+ if ( cellp == volp->cellp && fidp->volume == volp->ro.ID )
+ break;
+ }
+ if (!volp) {
+ /* try RW volumes */
+ for ( volp = cm_data.volumeRWIDHashTablep[hash]; volp; volp = volp->rw.nextp) {
+ if ( cellp == volp->cellp && fidp->volume == volp->rw.ID )
+ break;
+ }
+ }
+ if (!volp) {
+ /* try BK volumes */
+ for ( volp = cm_data.volumeBKIDHashTablep[hash]; volp; volp = volp->bk.nextp) {
+ if ( cellp == volp->cellp && fidp->volume == volp->bk.ID )
+ break;
}
+ }
- /* hold the volume if we found it */
- if (volp) volp->refCount++;
- lock_ReleaseWrite(&cm_volumeLock);
+#ifdef SEARCH_ALL_VOLUMES
+ osi_assertx(volp == volp2, "unexpected cm_vol_t");
+#endif
- /* update it */
- cm_mountRootGen++;
- lock_ObtainMutex(&volp->mx);
- volp->flags |= CM_VOLUMEFLAG_RESET;
- code = cm_UpdateVolume(cellp, userp, reqp, volp);
- if (code == 0)
- volp->flags &= ~CM_VOLUMEFLAG_RESET;
- lock_ReleaseMutex(&volp->mx);
+ lock_ReleaseRead(&cm_volumeLock);
+
+ /* hold the volume if we found it */
+ if (volp)
+ cm_GetVolume(volp);
+
+ /* 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.
+ */
+ code = cm_UpdateVolume(cellp, userp, reqp, volp);
+ if (code == 0)
+ volp->flags &= ~CM_VOLUMEFLAG_RESET;
+#endif
+ lock_ReleaseMutex(&volp->mx);
- cm_PutVolume(volp);
+ cm_PutVolume(volp);
}
/* 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_serverRef_t *serversp;
-
- if (volume == volp->rwID)
- serversp = volp->rwServersp;
- else if (volume == volp->roID)
- serversp = volp->roServersp;
- else if (volume == volp->bkID)
- serversp = volp->bkServersp;
- else osi_panic("bad volume ID in cm_GetVolServers", __FILE__, __LINE__);
+ cm_serverRef_t **serverspp;
+ cm_serverRef_t *current;;
+
+ lock_ObtainWrite(&cm_serverLock);
+
+ if (volume == volp->rw.ID)
+ serverspp = &volp->rw.serversp;
+ else if (volume == volp->ro.ID)
+ serverspp = &volp->ro.serversp;
+ else if (volume == volp->bk.ID)
+ serverspp = &volp->bk.serversp;
+ else
+ osi_panic("bad volume ID in cm_GetVolServers", __FILE__, __LINE__);
- return serversp;
+ for (current = *serverspp; current; current = current->next)
+ current->refCount++;
+
+ lock_ReleaseWrite(&cm_serverLock);
+
+ return serverspp;
}
void cm_PutVolume(cm_volume_t *volp)
{
- lock_ObtainWrite(&cm_volumeLock);
- osi_assert(volp->refCount-- > 0);
- lock_ReleaseWrite(&cm_volumeLock);
+ lock_ObtainWrite(&cm_volumeLock);
+ osi_assertx(volp->refCount-- > 0, "cm_volume_t refCount 0");
+ lock_ReleaseWrite(&cm_volumeLock);
}
/* 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->ro.ID && volp->ro.serversp)
+ id = volp->ro.ID;
+ else
+ id = volp->rw.ID;
+ lock_ReleaseMutex(&volp->mx);
+
+ return id;
+}
+
+void cm_RefreshVolumes(void)
+{
+ cm_volume_t *volp;
+ cm_scache_t *scp;
+
+ cm_data.mountRootGen = time(NULL);
+
+ /* force a re-loading of volume data from the vldb */
+ lock_ObtainWrite(&cm_volumeLock);
+ for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
+ volp->refCount++;
+ lock_ReleaseWrite(&cm_volumeLock);
lock_ObtainMutex(&volp->mx);
- if (volp->roID && volp->roServersp)
- id = volp->roID;
- else
- id = volp->rwID;
+ volp->flags |= CM_VOLUMEFLAG_RESET;
lock_ReleaseMutex(&volp->mx);
+
+ lock_ObtainWrite(&cm_volumeLock);
+ osi_assertx(volp->refCount-- > 0, "cm_volume_t refCount 0");
+ }
+ lock_ReleaseWrite(&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_ObtainMutex(&scp->mx);
+ scp->mountPointStringp[0] = '\0';
+ lock_ReleaseMutex(&scp->mx);
+ }
+ }
- return id;
}
-void cm_CheckVolumes(void)
+
+/* 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)
{
- cm_volume_t *volp;
+ cm_conn_t *connp;
+ long code;
+ AFSFetchVolumeStatus volStat;
+ char *Name;
+ char *OfflineMsg;
+ char *MOTD;
+ cm_req_t req;
+ struct rx_connection * callp;
+ char volName[32];
+ char offLineMsg[256];
+ char motd[256];
+ long online = 0;
+ cm_serverRef_t *serversp;
- cm_mountRootGen++;
- lock_ObtainWrite(&cm_volumeLock);
- for(volp = cm_allVolumesp; volp; volp=volp->nextp) {
- volp->refCount++;
- lock_ReleaseWrite(&cm_volumeLock);
- lock_ObtainMutex(&volp->mx);
+ Name = volName;
+ OfflineMsg = offLineMsg;
+ MOTD = motd;
- volp->flags |= CM_VOLUMEFLAG_RESET;
+ lock_ObtainMutex(&volp->mx);
- lock_ReleaseMutex(&volp->mx);
- lock_ObtainWrite(&cm_volumeLock);
- osi_assert(volp->refCount-- > 0);
- }
- lock_ReleaseWrite(&cm_volumeLock);
+ if (volp->flags & CM_VOLUMEFLAG_RESET) {
+ cm_InitReq(&req);
+ code = cm_UpdateVolume(volp->cellp, cm_rootUserp, &req, volp);
+ if (code == 0)
+ volp->flags &= ~CM_VOLUMEFLAG_RESET;
+ }
+
+ if (volp->rw.ID != 0 && (!volID || volID == volp->rw.ID) &&
+ volp->rw.serversp &&
+ (volp->rw.state == vl_busy || volp->rw.state == vl_offline || volp->rw.state == vl_unknown)) {
+ cm_InitReq(&req);
+
+ for (serversp = volp->rw.serversp; serversp; serversp = serversp->next) {
+ if (serversp->status == srv_busy || serversp->status == srv_offline)
+ serversp->status = srv_not_busy;
+ }
+
+ lock_ReleaseMutex(&volp->mx);
+ do {
+ code = cm_ConnFromVolume(volp, volp->rw.ID, cm_rootUserp, &req, &connp);
+ if (code)
+ continue;
+
+ callp = cm_GetRxConn(connp);
+ code = RXAFS_GetVolumeStatus(callp, volp->rw.ID,
+ &volStat, &Name, &OfflineMsg, &MOTD);
+ rx_PutConnection(callp);
+
+ } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
+ code = cm_MapRPCError(code, &req);
+
+ lock_ObtainMutex(&volp->mx);
+ if (code == 0 && volStat.Online) {
+ cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_online);
+ volp->rw.state = vl_online;
+ online = 1;
+ } else if (code == CM_ERROR_NOACCESS) {
+ cm_VolumeStatusNotification(volp, volp->rw.ID, volp->rw.state, vl_unknown);
+ volp->rw.state = vl_unknown;
+ online = 1;
+ }
+ }
+
+ if (volp->ro.ID != 0 && (!volID || volID == volp->ro.ID) &&
+ volp->ro.serversp &&
+ (volp->ro.state == vl_busy || volp->ro.state == vl_offline || volp->ro.state == vl_unknown)) {
+ cm_InitReq(&req);
+
+ for (serversp = volp->ro.serversp; serversp; serversp = serversp->next) {
+ if (serversp->status == srv_busy || serversp->status == srv_offline)
+ serversp->status = srv_not_busy;
+ }
+
+ lock_ReleaseMutex(&volp->mx);
+ do {
+ code = cm_ConnFromVolume(volp, volp->ro.ID, cm_rootUserp, &req, &connp);
+ if (code)
+ continue;
+
+ callp = cm_GetRxConn(connp);
+ code = RXAFS_GetVolumeStatus(callp, volp->ro.ID,
+ &volStat, &Name, &OfflineMsg, &MOTD);
+ rx_PutConnection(callp);
+
+ } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
+ code = cm_MapRPCError(code, &req);
+
+ lock_ObtainMutex(&volp->mx);
+ if (code == 0 && volStat.Online) {
+ cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_online);
+ volp->ro.state = vl_online;
+ online = 1;
+ } else if (code == CM_ERROR_NOACCESS) {
+ cm_VolumeStatusNotification(volp, volp->ro.ID, volp->ro.state, vl_unknown);
+ volp->ro.state = vl_unknown;
+ online = 1;
+ }
+ }
+
+ if (volp->bk.ID != 0 && (!volID || volID == volp->bk.ID) &&
+ volp->bk.serversp &&
+ (volp->bk.state == vl_busy || volp->bk.state == vl_offline || volp->bk.state == vl_unknown)) {
+ cm_InitReq(&req);
+
+ for (serversp = volp->bk.serversp; serversp; serversp = serversp->next) {
+ if (serversp->status == srv_busy || serversp->status == srv_offline)
+ serversp->status = srv_not_busy;
+ }
+
+ lock_ReleaseMutex(&volp->mx);
+ do {
+ code = cm_ConnFromVolume(volp, volp->bk.ID, cm_rootUserp, &req, &connp);
+ if (code)
+ continue;
+
+ callp = cm_GetRxConn(connp);
+ code = RXAFS_GetVolumeStatus(callp, volp->bk.ID,
+ &volStat, &Name, &OfflineMsg, &MOTD);
+ rx_PutConnection(callp);
+
+ } while (cm_Analyze(connp, cm_rootUserp, &req, NULL, NULL, NULL, NULL, code));
+ code = cm_MapRPCError(code, &req);
+
+ lock_ObtainMutex(&volp->mx);
+ if (code == 0 && volStat.Online) {
+ cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_online);
+ volp->bk.state = vl_online;
+ online = 1;
+ } else if (code == CM_ERROR_NOACCESS) {
+ cm_VolumeStatusNotification(volp, volp->bk.ID, volp->bk.state, vl_unknown);
+ volp->bk.state = vl_unknown;
+ online = 1;
+ }
+ }
+
+ lock_ReleaseMutex(&volp->mx);
+ return online;
+}
+
+
+/* called from the Daemon thread */
+void cm_CheckOfflineVolumes(void)
+{
+ cm_volume_t *volp;
+
+ lock_ObtainWrite(&cm_volumeLock);
+ for (volp = cm_data.allVolumesp; volp; volp=volp->allNextp) {
+ volp->refCount++;
+ lock_ReleaseWrite(&cm_volumeLock);
+
+ cm_CheckOfflineVolume(volp, 0);
+
+ lock_ObtainWrite(&cm_volumeLock);
+ osi_assertx(volp->refCount-- > 0, "cm_volume_t refCount 0");
+ }
+ lock_ReleaseWrite(&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;
+
+ if (!volp || !statep) {
+#ifdef DEBUG
+ DebugBreak();
+#endif
+ return;
+ }
+
+ lock_ObtainWrite(&cm_serverLock);
+ for (tsrp = statep->serversp; tsrp; tsrp=tsrp->next) {
+ tsp = tsrp->server;
+ cm_GetServerNoLock(tsp);
+ if (!(tsp->flags & CM_SERVERFLAG_DOWN)) {
+ allDown = 0;
+ if (tsrp->status == srv_busy) {
+ allOffline = 0;
+ someBusy = 1;
+ } else if (tsrp->status == srv_offline) {
+ allBusy = 0;
+ someOffline = 1;
+ } else {
+ allOffline = 0;
+ allBusy = 0;
+ }
+ }
+ cm_PutServerNoLock(tsp);
+ }
+ lock_ReleaseWrite(&cm_serverLock);
+
+ if (allDown)
+ newStatus = vl_alldown;
+ else if (allBusy || (someBusy && someOffline))
+ newStatus = vl_busy;
+ else if (allOffline)
+ newStatus = vl_offline;
+ else
+ newStatus = vl_online;
- /* We should also refresh cached mount points */
+ 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->rw.ID == volID) {
+ cm_UpdateVolumeStatusInt(volp, &volp->rw);
+ } else if (volp->ro.ID == volID) {
+ cm_UpdateVolumeStatusInt(volp, &volp->ro);
+ } else if (volp->bk.ID == volID) {
+ cm_UpdateVolumeStatusInt(volp, &volp->bk);
+ } 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.
+ */
+ if (volp->rw.ID != 0)
+ cm_UpdateVolumeStatusInt(volp, &volp->rw);
+ if (volp->ro.ID != 0)
+ cm_UpdateVolumeStatusInt(volp, &volp->ro);
+ if (volp->bk.ID != 0)
+ cm_UpdateVolumeStatusInt(volp, &volp->bk);
+ }
}
/*
** 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;
+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->allNextp)
+ {
+ code = 1 ; /* assume that list is unchanged */
+ volp->refCount++;
+ lock_ReleaseWrite(&cm_volumeLock);
+ lock_ObtainMutex(&volp->mx);
+
+ if ((tsp->cellp==volp->cellp) && (volp->ro.serversp))
+ code =cm_ChangeRankServer(&volp->ro.serversp, tsp);
+
+ /* this volume list was changed */
+ if ( !code )
+ cm_RandomizeServer(&volp->ro.serversp);
- /* find volumes which might have RO copy on server*/
+ lock_ReleaseMutex(&volp->mx);
lock_ObtainWrite(&cm_volumeLock);
- for(volp = cm_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);
+ osi_assertx(volp->refCount-- > 0, "cm_volume_t refCount 0");
+ }
+ lock_ReleaseWrite(&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)
+ {
+ cm_scache_t *scp;
+ int scprefs = 0;
+
+ for (scp = cm_data.allSCachesp; scp; scp = scp->allNextp)
+ {
+ if (scp->volp == volp)
+ scprefs++;
+ }
+
+ sprintf(output, "%s - volp=0x%p cell=%s name=%s rwID=%u roID=%u bkID=%u flags=0x%x fid (cell=%d, volume=%d, vnode=%d, unique=%d) refCount=%u scpRefs=%u\r\n",
+ cookie, volp, volp->cellp->name, volp->namep, volp->rw.ID, volp->ro.ID, volp->bk.ID, volp->flags,
+ volp->dotdotFid.cell, volp->dotdotFid.volume, volp->dotdotFid.vnode, volp->dotdotFid.unique,
+ volp->refCount, scprefs);
+ 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;
+
+ switch (volType) {
+ case RWVOL:
+ statep = &volp->rw;
+ break;
+ case ROVOL:
+ statep = &volp->ro;
+ break;
+ case BACKVOL:
+ statep = &volp->bk;
+ break;
+ default:
+ return;
+ }
+
+ 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;
+
+ switch (volType) {
+ case RWVOL:
+ statep = &volp->rw;
+ break;
+ case ROVOL:
+ statep = &volp->ro;
+ break;
+ case BACKVOL:
+ statep = &volp->bk;
+ break;
+ default:
+ return;
+ }
+
+ 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;
+ }
+ do {
+ if (tvolp == volp) {
+ *lvolpp = statep->nextp;
+ statep->flags &= ~CM_VOLUMEFLAG_IN_HASH;
+ statep->nextp = NULL;
+ break;
+ }
+
+ switch (volType) {
+ case RWVOL:
+ lvolpp = &tvolp->rw.nextp;
+ tvolp = tvolp->rw.nextp;
+ break;
+ case ROVOL:
+ lvolpp = &tvolp->ro.nextp;
+ tvolp = tvolp->ro.nextp;
+ break;
+ case BACKVOL:
+ lvolpp = &tvolp->bk.nextp;
+ tvolp = tvolp->bk.nextp;
+ break;
+ }
+ } 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_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->rw.ID)
+ ext = "";
+ else if (volID == volp->ro.ID)
+ ext = ".readonly";
+ else if (volID == volp->bk.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)
+{
+ if (volp->rw.ID == volID) {
+ return volp->rw.state;
+ } else if (volp->ro.ID == volID) {
+ return volp->ro.state;
+ } else if (volp->bk.ID == volID) {
+ return volp->bk.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;
+
+ lock_ObtainRead(&cm_volumeLock);
+ for (volp = cm_data.allVolumesp; volp; 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->ro.ID, 1, 1);
+
+ cm_InitReq(&req);
+
+ lock_ReleaseRead(&cm_volumeLock);
+ if (cm_GetSCache(&fid, &scp, cm_rootUserp, &req) == 0) {
+ lock_ObtainMutex(&scp->mx);
+ cm_GetCallback(scp, cm_rootUserp, &req, 1);
+ lock_ReleaseMutex(&scp->mx);
+ cm_ReleaseSCache(scp);
+ }
+ lock_ObtainRead(&cm_volumeLock);
+ }
+ }
+ lock_ReleaseRead(&cm_volumeLock);
}
git://git.openafs.org / openafs.git / blobdiff