/*
* Copyright 2000, International Business Machines Corporation and others.
* All Rights Reserved.
- *
+ *
* This software has been released under the terms of the IBM Public
* License. For details, see the LICENSE file in the top-level source
* directory or online at http://www.openafs.org/dl/license10.html
+ *
+ * Portions Copyright (c) 2006-2008 Sine Nomine Associates
*/
/*
#define VolumeWriteable2(vol) (vol.type == readwriteVolume)
typedef bit32 FileOffset; /* Offset in this file */
#define Date afs_uint32
+#include "daemon_com.h"
+#include "fssync.h"
+
+#if 0
+/** turn this on if you suspect a volume package locking bug */
+#define VOL_LOCK_DEBUG 1
+#endif
+
+#ifdef VOL_LOCK_DEBUG
+#define VOL_LOCK_ASSERT_HELD \
+ osi_Assert(vol_glock_holder == pthread_self())
+#define VOL_LOCK_ASSERT_UNHELD \
+ osi_Assert(vol_glock_holder == 0)
+#define _VOL_LOCK_SET_HELD \
+ vol_glock_holder = pthread_self()
+#define _VOL_LOCK_SET_UNHELD \
+ vol_glock_holder = 0
+#define VOL_LOCK_DBG_CV_WAIT_END \
+ do { \
+ VOL_LOCK_ASSERT_UNHELD; \
+ _VOL_LOCK_SET_HELD; \
+ } while(0)
+#define VOL_LOCK_DBG_CV_WAIT_BEGIN \
+ do { \
+ VOL_LOCK_ASSERT_HELD; \
+ _VOL_LOCK_SET_UNHELD; \
+ } while(0)
+#else
+#define VOL_LOCK_ASSERT_HELD
+#define VOL_LOCK_ASSERT_UNHELD
+#define VOL_LOCK_DBG_CV_WAIT_BEGIN
+#define VOL_LOCK_DBG_CV_WAIT_END
+#endif
+
#ifdef AFS_PTHREAD_ENV
-#include <assert.h>
#include <pthread.h>
extern pthread_mutex_t vol_glock_mutex;
-extern pthread_mutex_t vol_attach_mutex;
-extern pthread_mutex_t vol_fsync_mutex;
extern pthread_mutex_t vol_trans_mutex;
extern pthread_cond_t vol_put_volume_cond;
extern pthread_cond_t vol_sleep_cond;
-#define VATTACH_LOCK \
- assert(pthread_mutex_lock(&vol_attach_mutex) == 0)
-#define VATTACH_UNLOCK \
- assert(pthread_mutex_unlock(&vol_attach_mutex) == 0)
+extern pthread_cond_t vol_vinit_cond;
+extern ih_init_params vol_io_params;
+extern int vol_attach_threads;
+#ifdef VOL_LOCK_DEBUG
+extern pthread_t vol_glock_holder;
#define VOL_LOCK \
- assert(pthread_mutex_lock(&vol_glock_mutex) == 0)
+ do { \
+ MUTEX_ENTER(&vol_glock_mutex); \
+ VOL_LOCK_ASSERT_UNHELD; \
+ _VOL_LOCK_SET_HELD; \
+ } while (0)
#define VOL_UNLOCK \
- assert(pthread_mutex_unlock(&vol_glock_mutex) == 0)
-#define VFSYNC_LOCK \
- assert(pthread_mutex_lock(&vol_fsync_mutex) == 0)
-#define VFSYNC_UNLOCK \
- assert(pthread_mutex_unlock(&vol_fsync_mutex) == 0)
-#define VTRANS_LOCK \
- assert(pthread_mutex_lock(&vol_trans_mutex) == 0)
-#define VTRANS_UNLOCK \
- assert(pthread_mutex_unlock(&vol_trans_mutex) == 0)
+ do { \
+ VOL_LOCK_ASSERT_HELD; \
+ _VOL_LOCK_SET_UNHELD; \
+ MUTEX_EXIT(&vol_glock_mutex); \
+ } while (0)
+#define VOL_CV_WAIT(cv) \
+ do { \
+ VOL_LOCK_DBG_CV_WAIT_BEGIN; \
+ CV_WAIT((cv), &vol_glock_mutex); \
+ VOL_LOCK_DBG_CV_WAIT_END; \
+ } while (0)
+#else /* !VOL_LOCK_DEBUG */
+#define VOL_LOCK MUTEX_ENTER(&vol_glock_mutex)
+#define VOL_UNLOCK MUTEX_EXIT(&vol_glock_mutex)
+#define VOL_CV_WAIT(cv) CV_WAIT((cv), &vol_glock_mutex)
+#endif /* !VOL_LOCK_DEBUG */
+
+/**
+ * @param[in] cv cond var
+ * @param[in] ts deadline, or NULL to wait forever
+ * @param[out] timedout set to 1 if we returned due to the deadline, 0 if we
+ * returned due to the cond var getting signalled. If
+ * NULL, it is ignored.
+ */
+static_inline void
+VOL_CV_TIMEDWAIT(pthread_cond_t *cv, const struct timespec *ts, int *timedout)
+{
+ int code;
+ if (timedout) {
+ *timedout = 0;
+ }
+ if (!ts) {
+ VOL_CV_WAIT(cv);
+ return;
+ }
+ VOL_LOCK_DBG_CV_WAIT_BEGIN;
+ code = CV_TIMEDWAIT(cv, &vol_glock_mutex, ts);
+ VOL_LOCK_DBG_CV_WAIT_END;
+ if (code == ETIMEDOUT) {
+ code = 0;
+ if (timedout) {
+ *timedout = 1;
+ }
+ }
+ osi_Assert(code == 0);
+}
+
+#define VSALVSYNC_LOCK MUTEX_ENTER(&vol_salvsync_mutex)
+#define VSALVSYNC_UNLOCK MUTEX_EXIT(&vol_salvsync_mutex)
+#define VTRANS_LOCK MUTEX_ENTER(&vol_trans_mutex)
+#define VTRANS_UNLOCK MUTEX_EXIT(&vol_trans_mutex)
#else /* AFS_PTHREAD_ENV */
-#define VATTACH_LOCK
-#define VATTACH_UNLOCK
#define VOL_LOCK
#define VOL_UNLOCK
-#define VFSYNC_LOCK
-#define VFSYNC_UNLOCK
+#define VSALVSYNC_LOCK
+#define VSALVSYNC_UNLOCK
#define VTRANS_LOCK
#define VTRANS_UNLOCK
#endif /* AFS_PTHREAD_ENV */
-typedef enum { fileServer, volumeUtility, salvager } ProgramType;
+/**
+ * volume package program type enumeration.
+ */
+typedef enum {
+ fileServer = 1, /**< the fileserver process */
+ volumeUtility = 2, /**< any miscellaneous volume utility */
+ salvager = 3, /**< standalone whole-partition salvager */
+ salvageServer = 4, /**< dafs online salvager */
+ debugUtility = 5, /**< fssync-debug or similar utility */
+ volumeServer = 6, /**< the volserver process */
+ volumeSalvager = 7 /**< the standalone single-volume salvager */
+} ProgramType;
extern ProgramType programType; /* The type of program using the package */
/* Some initialization parameters for the volume package */
/* Add new initialization parameters here */
-extern int (*V_BreakVolumeCallbacks) ();
-extern int (*vol_PollProc) ();
+extern int (*V_BreakVolumeCallbacks) (VolumeId);
+extern int (*vol_PollProc) (void);
+
#define DOPOLL ((vol_PollProc)? (*vol_PollProc)() : 0)
+#ifdef AFS_DEMAND_ATTACH_FS
+/**
+ * variable error return code based upon programType and DAFS presence
+ */
+#define DAFS_VSALVAGE ((programType == fileServer) ? VSALVAGING : VSALVAGE)
+#else
+#define DAFS_VSALVAGE (VSALVAGE)
+#endif
+
struct versionStamp { /* Version stamp for critical volume files */
bit32 magic; /* Magic number */
bit32 version; /* Version number of this file, or software
* that created this file */
};
+#ifdef AFS_DEMAND_ATTACH_FS
+/**
+ * demand attach volume state enumeration.
+ *
+ * @note values must be contiguous in order for VIsValidState() to work correctly
+ */
+typedef enum {
+ VOL_STATE_UNATTACHED = 0, /**< volume is unattached */
+ VOL_STATE_PREATTACHED = 1, /**< volume has been pre-attached */
+ VOL_STATE_ATTACHING = 2, /**< volume is transitioning to fully attached */
+ VOL_STATE_ATTACHED = 3, /**< volume has been fully attached */
+ VOL_STATE_UPDATING = 4, /**< volume is updating on-disk structures */
+ VOL_STATE_GET_BITMAP = 5, /**< volume is getting bitmap entries */
+ VOL_STATE_HDR_LOADING = 6, /**< volume is loading disk header */
+ VOL_STATE_HDR_ATTACHING = 7, /**< volume is getting a header from the LRU */
+ VOL_STATE_SHUTTING_DOWN = 8, /**< volume is shutting down */
+ VOL_STATE_GOING_OFFLINE = 9, /**< volume is going offline */
+ VOL_STATE_OFFLINING = 10, /**< volume is transitioning to offline */
+ VOL_STATE_DETACHING = 11, /**< volume is transitioning to detached */
+ VOL_STATE_SALVSYNC_REQ = 12, /**< volume is blocked on a salvsync request */
+ VOL_STATE_SALVAGING = 13, /**< volume is being salvaged */
+ VOL_STATE_ERROR = 14, /**< volume is in an error state */
+ VOL_STATE_VNODE_ALLOC = 15, /**< volume is busy allocating a new vnode */
+ VOL_STATE_VNODE_GET = 16, /**< volume is busy getting vnode disk data */
+ VOL_STATE_VNODE_CLOSE = 17, /**< volume is busy closing vnodes */
+ VOL_STATE_VNODE_RELEASE = 18, /**< volume is busy releasing vnodes */
+ VOL_STATE_VLRU_ADD = 19, /**< volume is busy being added to a VLRU queue */
+ VOL_STATE_DELETED = 20, /**< volume has been deleted by the volserver */
+ VOL_STATE_SALVAGE_REQ = 21, /**< volume has been requested to be salvaged,
+ * but is waiting for other users to go away
+ * so it can be offlined */
+ /* please add new states directly above this line */
+ VOL_STATE_FREED = 22, /**< debugging aid */
+ VOL_STATE_COUNT = 23 /**< total number of valid states */
+} VolState;
+
+/**
+ * V_attachFlags bits.
+ */
+enum VolFlags {
+ VOL_HDR_ATTACHED = 0x1, /**< volume header is attached to Volume struct */
+ VOL_HDR_LOADED = 0x2, /**< volume header contents are valid */
+ VOL_HDR_IN_LRU = 0x4, /**< volume header is in LRU */
+ VOL_IN_HASH = 0x8, /**< volume is in hash table */
+ VOL_ON_VBYP_LIST = 0x10, /**< volume is on VByP list */
+ VOL_IS_BUSY = 0x20, /**< volume is not to be free()d */
+ VOL_ON_VLRU = 0x40, /**< volume is on the VLRU */
+ VOL_HDR_DONTSALV = 0x80, /**< volume header DONTSALVAGE flag is set */
+ VOL_LOCKED = 0x100 /**< volume is disk-locked (@see VLockVolumeNB) */
+};
+
+/* VPrintExtendedCacheStats flags */
+#define VOL_STATS_PER_CHAIN 0x1 /**< compute simple per-chain stats */
+#define VOL_STATS_PER_CHAIN2 0x2 /**< compute per-chain stats that require scanning
+ * every element of the chain */
+
+/* VLRU_SetOptions options */
+#define VLRU_SET_THRESH 1
+#define VLRU_SET_INTERVAL 2
+#define VLRU_SET_MAX 3
+#define VLRU_SET_ENABLED 4
+
+/**
+ * VLRU queue names.
+ */
+typedef enum {
+ VLRU_QUEUE_NEW = 0, /**< LRU queue for new volumes */
+ VLRU_QUEUE_MID = 1, /**< survivor generation */
+ VLRU_QUEUE_OLD = 2, /**< old generation */
+ VLRU_QUEUE_CANDIDATE = 3, /**< soft detach candidate pool */
+ VLRU_QUEUE_HELD = 4, /* volumes which are not allowed
+ * to be soft detached */
+ VLRU_QUEUE_INVALID = 5 /**< invalid queue id */
+} VLRUQueueName;
+
+/* default scanner timing parameters */
+#define VLRU_DEFAULT_OFFLINE_THRESH (60*60*2) /* 2 hours */
+#define VLRU_DEFAULT_OFFLINE_INTERVAL (60*2) /* 2 minutes */
+#define VLRU_DEFAULT_OFFLINE_MAX 8 /* 8 volumes */
+
+
+/**
+ * DAFS thread-specific options structure
+ */
+typedef struct VThreadOptions {
+ int disallow_salvsync; /**< whether or not salvsync calls are allowed
+ * on this thread (deadlock prevention). */
+} VThreadOptions_t;
+extern pthread_key_t VThread_key;
+extern VThreadOptions_t VThread_defaults;
+
+#endif /* AFS_DEMAND_ATTACH_FS */
+
+typedef struct VolumePackageOptions {
+ afs_uint32 nLargeVnodes; /**< size of large vnode cache */
+ afs_uint32 nSmallVnodes; /**< size of small vnode cache */
+ afs_uint32 volcache; /**< size of volume header cache */
+
+ afs_int32 canScheduleSalvage; /**< can we schedule salvages? (DAFS) */
+ /* (if 'no', we will just error out if we
+ * find a bad vol) */
+ afs_int32 canUseFSSYNC; /**< can we use the FSSYNC channel? */
+ afs_int32 canUseSALVSYNC; /**< can we use the SALVSYNC channel? (DAFS) */
+ afs_int32 unsafe_attach; /**< can we bypass checking the inUse vol
+ * header on attach? */
+} VolumePackageOptions;
+
/* Magic numbers and version stamps for each type of file */
#define VOLUMEHEADERMAGIC ((bit32)0x88a1bb3c)
#define VOLUMEINFOMAGIC ((bit32)0x78a1b2c5)
* of measurement; week[6] is 7 days ago */
Date dayUseDate; /* Date the dayUse statistics refer to; the week use stats
* are the preceding 7 days */
- int reserved3[11]; /* Other stats here */
+ unsigned int volUpdateCounter; /*incremented at every update of volume*/
+ int reserved3[10]; /* Other stats here */
/* Server supplied dates */
Date creationDate; /* Creation date for a read/write
/**************************************/
/* Memory resident volume information */
/**************************************/
+
+/**
+ * global volume package stats.
+ */
+typedef struct VolPkgStats {
+#ifdef AFS_DEMAND_ATTACH_FS
+ /*
+ * demand attach fs
+ * extended volume package statistics
+ */
+
+ /* levels */
+ afs_uint32 state_levels[VOL_STATE_COUNT]; /**< volume state transition counters */
+
+ /* counters */
+ afs_uint64 hash_looks; /**< number of hash chain element traversals */
+ afs_uint64 hash_reorders; /**< number of hash chain reorders */
+ afs_uint64 salvages; /**< online salvages since fileserver start */
+ afs_uint64 vol_ops; /**< volume operations since fileserver start */
+#endif /* AFS_DEMAND_ATTACH_FS */
+
+ afs_uint64 hdr_loads; /**< header loads from disk */
+ afs_uint64 hdr_gets; /**< header pulls out of LRU */
+ afs_uint64 attaches; /**< volume attaches since fileserver start */
+ afs_uint64 soft_detaches; /**< soft detach ops since fileserver start */
+
+ /* configuration parameters */
+ afs_uint32 hdr_cache_size; /**< size of volume header cache */
+} VolPkgStats;
+extern VolPkgStats VStats;
+
+/*
+ * volume header cache supporting structures
+ */
+struct volume_hdr_LRU_stats {
+ afs_uint32 free;
+ afs_uint32 used;
+ afs_uint32 attached;
+};
+
+struct volume_hdr_LRU_t {
+ struct rx_queue lru;
+ struct volume_hdr_LRU_stats stats;
+};
+extern struct volume_hdr_LRU_t volume_hdr_LRU;
+
+/*
+ * volume hash chain supporting structures
+ */
+typedef struct VolumeHashChainHead {
+ struct rx_queue queue;
+ int len;
+ /* someday we could put a per-chain lock here... */
+#ifdef AFS_DEMAND_ATTACH_FS
+ int busy;
+ int cacheCheck;
+
+ /* per-chain statistics */
+ afs_uint64 looks;
+ afs_uint64 gets;
+ afs_uint64 reorders;
+
+ pthread_cond_t chain_busy_cv;
+#endif /* AFS_DEMAND_ATTACH_FS */
+} VolumeHashChainHead;
+
+typedef struct VolumeHashTable {
+ int Size;
+ int Mask;
+ VolumeHashChainHead * Table;
+} VolumeHashTable_t;
+extern VolumeHashTable_t VolumeHashTable;
+
+struct VolumeHashChainStats {
+ afs_int32 table_size;
+ afs_int32 chain_len;
+#ifdef AFS_DEMAND_ATTACH_FS
+ afs_int32 chain_cacheCheck;
+ afs_int32 chain_busy;
+ afs_uint64 chain_looks;
+ afs_uint64 chain_gets;
+ afs_uint64 chain_reorders;
+#endif
+};
+
+
+#ifdef AFS_DEMAND_ATTACH_FS
+/**
+ * DAFS extended per-volume statistics.
+ *
+ * @note this data lives across the entire
+ * lifetime of the fileserver process
+ */
+typedef struct VolumeStats {
+ /* counters */
+ afs_uint64 hash_lookups; /**< hash table lookups */
+ afs_uint64 hash_short_circuits; /**< short circuited hash lookups (due to cacheCheck) */
+ afs_uint64 hdr_loads; /**< header loads from disk */
+ afs_uint64 hdr_gets; /**< header pulls out of LRU */
+ afs_uint16 attaches; /**< attaches of this volume since fileserver start */
+ afs_uint16 soft_detaches; /**< soft detaches of this volume */
+ afs_uint16 salvages; /**< online salvages since fileserver start */
+ afs_uint16 vol_ops; /**< volume operations since fileserver start */
+
+ /* timestamps */
+ afs_uint32 last_attach; /**< unix timestamp of last VAttach */
+ afs_uint32 last_get; /**< unix timestamp of last VGet/VHold */
+ afs_uint32 last_promote; /**< unix timestamp of last VLRU promote/demote */
+ afs_uint32 last_hdr_get; /**< unix timestamp of last GetVolumeHeader() */
+ afs_uint32 last_hdr_load; /**< unix timestamp of last LoadVolumeHeader() */
+ afs_uint32 last_salvage; /**< unix timestamp of last initiation of an online salvage */
+ afs_uint32 last_salvage_req; /**< unix timestamp of last SALVSYNC request */
+ afs_uint32 last_vol_op; /**< unix timestamp of last volume operation */
+} VolumeStats;
+
+
+#define SALVAGE_PRIO_UPDATE_INTERVAL 3 /**< number of seconds between prio updates */
+#define SALVAGE_COUNT_MAX 16 /**< number of online salvages we
+ * allow before moving the volume
+ * into a permanent error state
+ *
+ * once this threshold is reached,
+ * the operator will have to manually
+ * issue a 'bos salvage' to bring
+ * the volume back online
+ */
+
+/**
+ * DAFS online salvager state.
+ */
+typedef struct VolumeOnlineSalvage {
+ afs_uint32 prio; /**< number of VGetVolume's since salvage requested */
+ int reason; /**< reason for requesting online salvage */
+ byte requested; /**< flag specifying that salvage should be scheduled */
+ byte scheduled; /**< flag specifying whether online salvage scheduled */
+ byte scheduling; /**< if nonzero, this volume has entered
+ * VCheckSalvage(), so if we recurse into
+ * VCheckSalvage() with this set, exit immediately
+ * to avoid recursing forever */
+ byte reserved[1]; /**< padding */
+} VolumeOnlineSalvage;
+
+/**
+ * DAFS Volume LRU state.
+ */
+typedef struct VolumeVLRUState {
+ struct rx_queue lru; /**< VLRU queue for this generation */
+ VLRUQueueName idx; /**< VLRU generation index */
+} VolumeVLRUState;
+#endif /* AFS_DEMAND_ATTACH_FS */
+
typedef struct Volume {
- struct Volume *hashNext; /* Next in hash resolution table */
+ struct rx_queue q; /* Volume hash chain pointers */
VolumeId hashid; /* Volume number -- for hash table lookup */
struct volHeader *header; /* Cached disk data */
Device device; /* Unix device for the volume */
- struct DiskPartition
+ struct DiskPartition64
*partition; /* Information about the Unix partition */
struct vnodeIndex {
IHandle_t *handle; /* Unix inode holding this index */
* value nextVnodeVersion */
IHandle_t *diskDataHandle; /* Unix inode holding general volume info */
bit16 vnodeHashOffset; /* Computed by HashOffset function in vnode.h.
- * Assigned to the volume when initialized.
+ * Assigned to the volume when initialized.
* Added to vnode number for hash table index */
byte shuttingDown; /* This volume is going to be detached */
byte goingOffline; /* This volume is going offline */
bit32 cacheCheck; /* Online sequence number to be used to invalidate vnode cache entries
* that stayed around while a volume was offline */
short nUsers; /* Number of users of this volume header */
- byte needsPutBack; /* For a volume utility, this flag is set if we need
- * to give the volume back when we detach it. The server has
+#define VOL_PUTBACK 1
+#define VOL_PUTBACK_DELETE 2
+ byte needsPutBack; /* For a volume utility, this flag is set to VOL_PUTBACK if we
+ * need to give the volume back when we detach it. The server has
* certain modes where it doesn't detach the volume, and
- * if we give it back spuriously, the server aborts. This field
+ * if we give it back spuriously, the server aborts. If set to
+ * VOL_PUTBACK_DELETE, it indicates that we need to tell the
+ * fileserver that the volume is gone entirely, instead of just
+ * giving the volume back to the fileserver. This field
* is meaningless on the file server */
byte specialStatus; /* An error code to return on VGetVolume: the
* volume is unavailable for the reason quoted,
* currently VBUSY or VMOVED */
+ afs_uint32 checkoutMode; /* for volume utilities, mode number for current checkout */
afs_uint32 updateTime; /* Time that this volume was put on the updated
* volume list--the list of volumes that will be
* salvaged should the file server crash */
+ struct rx_queue vnode_list; /**< linked list of cached vnodes for this volume */
+#ifdef AFS_DEMAND_ATTACH_FS
+ VolState attach_state; /* what stage of attachment has been completed */
+ afs_uint32 attach_flags; /* flags related to attachment state */
+ pthread_cond_t attach_cv; /* state change condition variable */
+ short nWaiters; /* volume package internal ref count */
+ int chainCacheCheck; /* Volume hash chain cache check */
+ struct rx_queue vol_list; /* per-partition volume list (VByPList) */
+
+ VolumeOnlineSalvage salvage; /* online salvager state */
+ VolumeStats stats; /* per-volume statistics */
+ VolumeVLRUState vlru; /* state specific to the VLRU */
+ FSSYNC_VolOp_info * pending_vol_op; /* fssync command info for any pending vol ops */
+#endif /* AFS_DEMAND_ATTACH_FS */
} Volume;
struct volHeader {
- struct volHeader *prev, *next; /* LRU pointers */
+ struct rx_queue lru;
VolumeDiskData diskstuff; /* General volume info read from disk */
Volume *back; /* back pointer to current volume structure */
};
#define V_vnodeIndex(vp) ((vp)->vnodeIndex)
#define V_nextVnodeUnique(vp) ((vp)->nextVnodeUnique)
#define V_linkHandle(vp) ((vp)->linkHandle)
+#define V_checkoutMode(vp) ((vp)->checkoutMode)
+#ifdef AFS_DEMAND_ATTACH_FS
+#define V_attachState(vp) ((vp)->attach_state)
+#define V_attachFlags(vp) ((vp)->attach_flags)
+#define V_attachCV(vp) ((vp)->attach_cv)
+#endif /* AFS_DEMAND_ATTACH_FS */
/* N.B. V_id must be this, rather than vp->id, or some programs will break, probably */
#define V_stamp(vp) ((vp)->header->diskstuff.stamp)
#define V_stat_dirSameAuthor(vp, idx) (((vp)->header->diskstuff.stat_dirSameAuthor)[idx])
#define V_stat_dirDiffAuthor(vp, idx) (((vp)->header->diskstuff.stat_dirDiffAuthor)[idx])
#endif /* OPENAFS_VOL_STATS */
+#define V_volUpCounter(vp) ((vp)->header->diskstuff.volUpdateCounter)
/* File offset computations. The offset values in the volume header are
computed with these macros -- when the file is written only!! */
extern char *VSalvageMessage; /* Canonical message when a volume is forced
* offline */
-extern Volume *VGetVolume(Error * ec, VolId volumeId);
+extern Volume *VGetVolume(Error * ec, Error * client_ec, VolId volumeId);
+extern Volume *VGetVolumeTimed(Error * ec, Error * client_ec, VolId volumeId,
+ const struct timespec *ts);
extern Volume *VGetVolume_r(Error * ec, VolId volumeId);
extern void VPutVolume(Volume *);
extern void VPutVolume_r(Volume *);
extern void VOffline_r(Volume * vp, char *message);
extern int VConnectFS(void);
extern int VConnectFS_r(void);
+extern void VDisconnectFS(void);
+extern void VDisconnectFS_r(void);
+extern int VChildProcReconnectFS(void);
extern Volume *VAttachVolume(Error * ec, VolumeId volumeId, int mode);
extern Volume *VAttachVolume_r(Error * ec, VolumeId volumeId, int mode);
extern Volume *VCreateVolume(Error * ec, char *partname, VolId volumeId,
VolId parentId);
extern Volume *VCreateVolume_r(Error * ec, char *partname, VolId volumeId,
VolId parentId);
-extern VnodeId VAllocBitmapEntry(Error * ec, Volume * vp,
- struct vnodeIndex *index);
-extern VnodeId VAllocBitmapEntry_r(Error * ec, Volume * vp,
- struct vnodeIndex *index);
-extern void VFreeBitMapEntry(Error * ec, register struct vnodeIndex *index,
+extern int VAllocBitmapEntry(Error * ec, Volume * vp,
+ struct vnodeIndex *index);
+extern int VAllocBitmapEntry_r(Error * ec, Volume * vp,
+ struct vnodeIndex *index, int flags);
+extern void VFreeBitMapEntry(Error * ec, struct vnodeIndex *index,
unsigned bitNumber);
-extern void VFreeBitMapEntry_r(Error * ec, register struct vnodeIndex *index,
+extern void VFreeBitMapEntry_r(Error * ec, struct vnodeIndex *index,
unsigned bitNumber);
extern int VolumeNumber(char *name);
extern char *VolumeExternalName(VolumeId volumeId);
+extern int VolumeExternalName_r(VolumeId volumeId, char *name, size_t len);
extern Volume *VAttachVolumeByName(Error * ec, char *partition, char *name,
int mode);
extern Volume *VAttachVolumeByName_r(Error * ec, char *partition, char *name,
int mode);
extern void VShutdown(void);
+extern void VSetTranquil(void);
extern void VUpdateVolume(Error * ec, Volume * vp);
-extern void VUpdateVolume_r(Error * ec, Volume * vp);
+extern void VUpdateVolume_r(Error * ec, Volume * vp, int flags);
extern void VAddToVolumeUpdateList(Error * ec, Volume * vp);
extern void VAddToVolumeUpdateList_r(Error * ec, Volume * vp);
extern void VDetachVolume(Error * ec, Volume * vp);
extern void VDetachVolume_r(Error * ec, Volume * vp);
extern void VForceOffline(Volume * vp);
-extern void VForceOffline_r(Volume * vp);
-extern void VBumpVolumeUsage(register Volume * vp);
-extern void VBumpVolumeUsage_r(register Volume * vp);
+extern void VForceOffline_r(Volume * vp, int flags);
+extern void VBumpVolumeUsage(Volume * vp);
+extern void VBumpVolumeUsage_r(Volume * vp);
extern void VSetDiskUsage(void);
extern void VPrintCacheStats(void);
extern void VReleaseVnodeFiles_r(Volume * vp);
extern void VCloseVnodeFiles_r(Volume * vp);
-extern struct DiskPartition *VGetPartition(char *name, int abortp);
-extern struct DiskPartition *VGetPartition_r(char *name, int abortp);
-extern int VInitVolumePackage(ProgramType pt, int nLargeVnodes,
- int nSmallVnodes, int connect, int volcache);
+extern struct DiskPartition64 *VGetPartition(char *name, int abortp);
+extern struct DiskPartition64 *VGetPartition_r(char *name, int abortp);
+extern void VOptDefaults(ProgramType pt, VolumePackageOptions * opts);
+extern int VInitVolumePackage2(ProgramType pt, VolumePackageOptions * opts);
+extern int VInitAttachVolumes(ProgramType pt);
extern void DiskToVolumeHeader(VolumeHeader_t * h, VolumeDiskHeader_t * dh);
extern void VolumeHeaderToDisk(VolumeDiskHeader_t * dh, VolumeHeader_t * h);
-extern void VTakeOffline_r(register Volume * vp);
-extern void VTakeOffline(register Volume * vp);
+extern void AssignVolumeName(VolumeDiskData * vol, char *name, char *ext);
+extern void VTakeOffline_r(Volume * vp);
+extern void VTakeOffline(Volume * vp);
+extern Volume * VLookupVolume_r(Error * ec, VolId volumeId, Volume * hint);
+extern void VGetVolumePath(Error * ec, VolId volumeId, char **partitionp,
+ char **namep);
+extern char *vol_DevName(dev_t adev, char *wpath);
+
+struct VLockFile;
+extern void VLockFileInit(struct VLockFile *lf, const char *path);
+extern void VLockFileReinit(struct VLockFile *lf);
+extern int VLockFileLock(struct VLockFile *lf, afs_uint32 offset,
+ int locktype, int nonblock);
+extern void VLockFileUnlock(struct VLockFile *lf, afs_uint32 offset);
+
+#ifdef AFS_DEMAND_ATTACH_FS
+extern Volume *VPreAttachVolumeByName(Error * ec, char *partition, char *name);
+extern Volume *VPreAttachVolumeByName_r(Error * ec, char *partition, char *name);
+extern Volume *VPreAttachVolumeById_r(Error * ec, char * partition,
+ VolId volumeId);
+extern Volume *VPreAttachVolumeByVp_r(Error * ec, struct DiskPartition64 * partp,
+ Volume * vp, VolId volume_id);
+extern Volume *VGetVolumeByVp_r(Error * ec, Volume * vp);
+extern int VShutdownByPartition_r(struct DiskPartition64 * dp);
+extern int VShutdownVolume_r(Volume * vp);
+extern int VConnectSALV(void);
+extern int VConnectSALV_r(void);
+extern int VReconnectSALV(void);
+extern int VReconnectSALV_r(void);
+extern int VDisconnectSALV(void);
+extern int VDisconnectSALV_r(void);
+extern void VPrintExtendedCacheStats(int flags);
+extern void VPrintExtendedCacheStats_r(int flags);
+extern void VLRU_SetOptions(int option, afs_uint32 val);
+extern int VSetVolHashSize(int logsize);
+extern int VRequestSalvage_r(Error * ec, Volume * vp, int reason, int flags);
+extern int VUpdateSalvagePriority_r(Volume * vp);
+extern int VRegisterVolOp_r(Volume * vp, FSSYNC_VolOp_info * vopinfo);
+extern int VDeregisterVolOp_r(Volume * vp);
+extern void VCancelReservation_r(Volume * vp);
+extern int VChildProcReconnectFS_r(void);
+extern void VOfflineForVolOp_r(Error *ec, Volume *vp, char *message);
+
+struct VDiskLock;
+extern void VDiskLockInit(struct VDiskLock *dl, struct VLockFile *lf,
+ afs_uint32 offset);
+extern int VGetDiskLock(struct VDiskLock *dl, int locktype, int nonblock);
+extern void VReleaseDiskLock(struct VDiskLock *dl, int locktype);
+#endif /* AFS_DEMAND_ATTACH_FS */
+extern int VVolOpLeaveOnline_r(Volume * vp, FSSYNC_VolOp_info * vopinfo);
+extern int VVolOpLeaveOnlineNoHeader_r(Volume * vp, FSSYNC_VolOp_info * vopinfo);
+extern int VVolOpSetVBusy_r(Volume * vp, FSSYNC_VolOp_info * vopinfo);
+extern void VPurgeVolume(Error * ec, Volume * vp);
+
+extern afs_int32 VCanScheduleSalvage(void);
+extern afs_int32 VCanUseFSSYNC(void);
+extern afs_int32 VCanUseSALVSYNC(void);
+extern afs_int32 VCanUnsafeAttach(void);
+extern afs_int32 VReadVolumeDiskHeader(VolumeId volid,
+ struct DiskPartition64 * dp,
+ VolumeDiskHeader_t * hdr);
+extern afs_int32 VWriteVolumeDiskHeader(VolumeDiskHeader_t * hdr,
+ struct DiskPartition64 * dp);
+extern afs_int32 VCreateVolumeDiskHeader(VolumeDiskHeader_t * hdr,
+ struct DiskPartition64 * dp);
+extern afs_int32 VDestroyVolumeDiskHeader(struct DiskPartition64 * dp,
+ VolumeId volid, VolumeId parent);
+
+/**
+ * VWalkVolumeHeaders header callback.
+ *
+ * @param[in] dp disk partition
+ * @param[in] name full path to the .vol header file
+ * @param[in] hdr the header data that was read from the .vol header
+ * @param[in] last 1 if this is the last attempt to read the vol header, 0
+ * otherwise. DAFS VWalkVolumeHeaders will retry reading the
+ * header once, if a non-fatal error occurs when reading the
+ * header, or if this function returns a positive error code.
+ * So, if there is a problem, this function will be called
+ * first with last=0, then with last=1, then the error function
+ * callback will be called. For non-DAFS, this is always 1.
+ * @param[in] rock the rock passed to VWalkVolumeHeaders
+ *
+ * @return operation status
+ * @retval 0 success
+ * @retval negative a fatal error that should stop the walk immediately
+ * @retval positive an error with the volume header was encountered; the walk
+ * should continue, but the error function should be called on this
+ * header
+ *
+ * @see VWalkVolumeHeaders
+ */
+typedef int (*VWalkVolFunc)(struct DiskPartition64 *dp, const char *name,
+ struct VolumeDiskHeader *hdr, int last,
+ void *rock);
+/**
+ * VWalkVolumeHeaders error callback.
+ *
+ * This is called from VWalkVolumeHeaders when an invalid or otherwise
+ * problematic volume header is encountered. It is typically implemented as a
+ * wrapper to unlink the .vol file.
+ *
+ * @param[in] dp disk partition
+ * @param[in] name full path to the .vol header file
+ * @param[in] hdr header read in from the .vol file, or NULL if it could not
+ * be read
+ * @param[in] rock rock passed to VWalkVolumeHeaders
+ *
+ * @see VWalkVolumeHeaders
+ */
+typedef void (*VWalkErrFunc)(struct DiskPartition64 *dp, const char *name,
+ struct VolumeDiskHeader *hdr, void *rock);
+extern int VWalkVolumeHeaders(struct DiskPartition64 *dp, const char *partpath,
+ VWalkVolFunc volfunc, VWalkErrFunc errfunc,
+ void *rock);
/* Naive formula relating number of file size to number of 1K blocks in file */
/* Note: we charge 1 block for 0 length files so the user can't store
* never knows about more than one copy of the same volume--when
* a volume is moved from one partition to another on a single
* server */
+#define V_PEEK 6 /* "Peek" at the volume without telling the fileserver. This is
+ * similar to V_SECRETLY, but read-only. It is used in cases where
+ * not impacting fileserver performance is more important than
+ * getting the most recent data. */
+
+
+
+/* VUpdateVolume_r flags */
+#define VOL_UPDATE_WAIT 0x1 /* for demand attach, wait for other exclusive ops to end */
+#define VOL_UPDATE_NOFORCEOFF 0x2 /* don't force offline on failure. this is to prevent
+ * infinite recursion between vupdate and vforceoff */
+
+/* VForceOffline_r flags */
+#define VOL_FORCEOFF_NOUPDATE 0x1 /* don't force update on forceoff. this is to prevent
+ * infinite recursion between vupdate and vforceoff */
+
+/* VSyncVolume_r flags */
+#define VOL_SYNC_WAIT 0x1 /* for demand attach, wait for other exclusive ops to end */
+
+/* VAllocBitmapEntry_r flags */
+#define VOL_ALLOC_BITMAP_WAIT 0x1 /* for demand attach, wait for other exclusive ops to end */
+
+/* VRequestSalvage_r flags */
+#define VOL_SALVAGE_INVALIDATE_HEADER 0x1 /* for demand attach fs, invalidate volume header cache */
+#define VOL_SALVAGE_NO_OFFLINE 0x2 /* we do not need to wait to offline the volume; it has
+ * not been fully attached */
+
#if defined(NEARINODE_HINT)
#define V_pref(vp,nearInode) nearInodeHash(V_id(vp),(nearInode)); (nearInode) %= V_partition(vp)->f_files
#define V_pref(vp,nearInode) nearInode = 0
#endif /* NEARINODE_HINT */
+hdr_static_inline(unsigned int)
+afs_printable_VolumeId_u(VolumeId d) { return (unsigned int) d; }
+
+hdr_static_inline(unsigned int)
+afs_printable_VnodeId_u(VnodeId d) { return (unsigned int) d; }
+
#endif /* __volume_h */
git://git.openafs.org / openafs.git / blobdiff