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path: root/xlators/protocol/client/src/client-lk.c
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Diffstat (limited to 'xlators/protocol/client/src/client-lk.c')
-rw-r--r--xlators/protocol/client/src/client-lk.c360
1 files changed, 0 insertions, 360 deletions
diff --git a/xlators/protocol/client/src/client-lk.c b/xlators/protocol/client/src/client-lk.c
index 5611c7b83..1fd8f0d50 100644
--- a/xlators/protocol/client/src/client-lk.c
+++ b/xlators/protocol/client/src/client-lk.c
@@ -16,9 +16,6 @@
static void
__insert_and_merge (clnt_fd_ctx_t *fdctx, client_posix_lock_t *lock);
-static int
-client_send_recovery_lock (call_frame_t *frame, xlator_t *this,
- client_posix_lock_t *lock);
static void
__dump_client_lock (client_posix_lock_t *lock)
{
@@ -430,21 +427,6 @@ delete_granted_locks_fd (clnt_fd_ctx_t *fdctx)
return ret;
}
-static void
-client_mark_bad_fd (fd_t *fd, clnt_fd_ctx_t *fdctx)
-{
- xlator_t *this = NULL;
-
- this = THIS;
- if (fdctx)
- fdctx->remote_fd = -1;
-
- gf_log (this->name, GF_LOG_WARNING,
- "marking the file descriptor (%p) bad", fd);
-
- this_fd_set_ctx (fd, this, NULL, fdctx);
-}
-
int32_t
client_cmd_to_gf_cmd (int32_t cmd, int32_t *gf_cmd)
{
@@ -553,348 +535,6 @@ out:
}
-static int
-construct_reserve_unlock (struct gf_flock *lock, call_frame_t *frame,
- client_posix_lock_t *client_lock)
-{
- GF_ASSERT (lock);
- GF_ASSERT (frame);
-
- lock->l_type = F_UNLCK;
- lock->l_start = 0;
- lock->l_whence = SEEK_SET;
- lock->l_len = 0; /* Whole file */
- lock->l_pid = (uint64_t)(unsigned long)frame->root;
- lock->l_owner = client_lock->owner;
-
- frame->root->lk_owner = client_lock->owner;
-
- return 0;
-}
-
-static int
-construct_reserve_lock (client_posix_lock_t *client_lock, call_frame_t *frame,
- struct gf_flock *lock)
-{
- GF_ASSERT (client_lock);
-
- memcpy (lock, &(client_lock->user_flock), sizeof (struct gf_flock));
-
- frame->root->lk_owner = client_lock->owner;
-
- return 0;
-}
-
-uint64_t
-decrement_reopen_fd_count (xlator_t *this, clnt_conf_t *conf)
-{
- uint64_t fd_count = 0;
-
- LOCK (&conf->rec_lock);
- {
- fd_count = --(conf->reopen_fd_count);
- }
- UNLOCK (&conf->rec_lock);
-
- if (fd_count == 0) {
- gf_log (this->name, GF_LOG_INFO,
- "last fd open'd/lock-self-heal'd - notifying CHILD-UP");
- client_set_lk_version (this);
- client_notify_parents_child_up (this);
- }
-
- return fd_count;
-}
-
-int32_t
-client_remove_reserve_lock_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct gf_flock *lock, dict_t *xdata)
-{
- clnt_local_t *local = NULL;
- clnt_conf_t *conf = NULL;
-
- uint64_t fd_count = 0;
-
- local = frame->local;
- conf = this->private;
-
- if (op_ret < 0) {
- gf_log (this->name, GF_LOG_WARNING,
- "removing reserver lock on fd failed: %s",
- strerror(op_errno));
- goto cleanup;
- }
-
- gf_log (this->name, GF_LOG_DEBUG,
- "Removing reserve lock was successful.");
-
-cleanup:
- frame->local = NULL;
-
- client_mark_bad_fd (local->client_lock->fd, local->fdctx);
-
- destroy_client_lock (local->client_lock);
- client_local_wipe (local);
- STACK_DESTROY (frame->root);
-
- fd_count = decrement_reopen_fd_count (this, conf);
- gf_log (this->name, GF_LOG_TRACE,
- "Need to attempt lock recovery on %lld open fds",
- (unsigned long long) fd_count);
- return 0;
-}
-
-static void
-client_remove_reserve_lock (xlator_t *this, call_frame_t *frame,
- client_posix_lock_t *lock)
-{
- struct gf_flock unlock;
-
- construct_reserve_unlock (&unlock, frame, lock);
-
- STACK_WIND (frame, client_remove_reserve_lock_cbk,
- this, this->fops->lk,
- lock->fd, F_RESLK_UNLCK, &unlock, NULL);
-}
-
-static client_posix_lock_t *
-get_next_recovery_lock (xlator_t *this, clnt_local_t *local)
-{
- client_posix_lock_t *lock = NULL;
-
- pthread_mutex_lock (&local->mutex);
- {
- if (list_empty (&local->lock_list)) {
- gf_log (this->name, GF_LOG_DEBUG,
- "lock-list empty");
- goto unlock;
- }
-
- lock = list_entry ((local->lock_list).next, typeof (*lock), list);
- list_del_init (&lock->list);
- }
-unlock:
- pthread_mutex_unlock (&local->mutex);
-
- return lock;
-
-}
-
-int32_t
-client_reserve_lock_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct gf_flock *lock, dict_t *xdata)
-{
-
- clnt_local_t *local = NULL;
- clnt_conf_t *conf = NULL;
-
- uint64_t fd_count = 0;
-
- local = frame->local;
- conf = this->private;
-
- /* Got the reserve lock. Check if lock is grantable and proceed
- with the real lk call */
-
- if (op_ret >= 0) {
- /* Lock is grantable if flock reflects a successful getlk() call*/
- if (lock->l_type == F_UNLCK && lock->l_pid) {
- gf_log (this->name, GF_LOG_INFO,
- "Got the reservelk, but the lock is not grantable. ");
- client_remove_reserve_lock (this, frame, local->client_lock);
- goto out;
- }
-
- gf_log (this->name, GF_LOG_DEBUG, "reserve lock succeeded");
- client_send_recovery_lock (frame, this, local->client_lock);
- goto out;
- }
-
- /* Somebody else has a reserve lk. Lock conflict detected.
- Mark fd as bad */
-
- gf_log (this->name, GF_LOG_WARNING,
- "reservelk OP failed. aborting lock recovery");
-
- client_mark_bad_fd (local->client_lock->fd,
- local->fdctx);
- destroy_client_lock (local->client_lock);
- frame->local = NULL;
- client_local_wipe (local);
- STACK_DESTROY (frame->root);
-
- fd_count = decrement_reopen_fd_count (this, conf);
- gf_log (this->name, GF_LOG_DEBUG,
- "need to attempt lock recovery on %"PRIu64" open fds",
- fd_count);
-
-out:
- return 0;
-}
-
-int32_t
-client_recovery_lock_cbk (call_frame_t *frame,
- void *cookie,
- xlator_t *this,
- int32_t op_ret,
- int32_t op_errno,
- struct gf_flock *lock, dict_t *xdata)
-{
- clnt_local_t *local = NULL;
- clnt_fd_ctx_t *fdctx = NULL;
- clnt_conf_t *conf = NULL;
- client_posix_lock_t *next_lock = NULL;
-
- struct gf_flock reserve_flock;
- uint64_t fd_count = 0;
-
- local = frame->local;
- conf = this->private;
-
- if (op_ret < 0) {
- gf_log (this->name, GF_LOG_ERROR,
- "lock recovery failed: %s",
- strerror(op_errno));
-
- client_mark_bad_fd (local->client_lock->fd,
- local->fdctx);
- goto cleanup;
-
- /* Lock recovered. Continue with reserve lock for next lock */
- } else {
- gf_log (this->name, GF_LOG_DEBUG,
- "lock recovered successfully - continuing with next lock.");
-
- next_lock = get_next_recovery_lock (this, local);
- if (!next_lock) {
- gf_log (this->name, GF_LOG_DEBUG,
- "all locks recovered on fd");
- goto cleanup;
- }
-
- construct_reserve_lock (next_lock, frame, &reserve_flock);
- local->fdctx = fdctx;
- local->client_lock = next_lock;
-
- STACK_WIND (frame, client_reserve_lock_cbk,
- this, this->fops->lk,
- next_lock->fd, F_RESLK_LCK, &reserve_flock, NULL);
- goto out;
-
- }
-
-cleanup:
-
- frame->local = NULL;
- client_local_wipe (local);
-
- if (local->client_lock)
- destroy_client_lock (local->client_lock);
-
- STACK_DESTROY (frame->root);
-
- fd_count = decrement_reopen_fd_count (this, conf);
-
- gf_log (this->name, GF_LOG_DEBUG,
- "need to attempt lock recovery on %"PRIu64" open fds",
- fd_count);
-
-out:
- return 0;
-}
-
-static int
-client_send_recovery_lock (call_frame_t *frame, xlator_t *this,
- client_posix_lock_t *lock)
-{
- frame->root->lk_owner = lock->owner;
-
- /* Send all locks as F_SETLK to prevent the frame
- from blocking if there is a conflict */
-
- STACK_WIND (frame, client_recovery_lock_cbk,
- this, this->fops->lk,
- lock->fd, F_SETLK,
- &(lock->user_flock), NULL);
-
- return 0;
-}
-
-static int
-client_lockrec_init (clnt_fd_ctx_t *fdctx, clnt_local_t *local)
-{
-
- INIT_LIST_HEAD (&local->lock_list);
- pthread_mutex_init (&local->mutex, NULL);
-
- pthread_mutex_lock (&fdctx->mutex);
- {
- list_splice_init (&fdctx->lock_list, &local->lock_list);
- }
- pthread_mutex_unlock (&fdctx->mutex);
-
- return 0;
-}
-
-
-int
-client_attempt_lock_recovery (xlator_t *this, clnt_fd_ctx_t *fdctx)
-{
- call_frame_t *frame = NULL;
- clnt_local_t *local = NULL;
- client_posix_lock_t *lock = NULL;
-
- struct gf_flock reserve_flock;
- int ret = 0;
-
- local = mem_get0 (this->local_pool);
- if (!local) {
- ret = -ENOMEM;
- goto out;
- }
-
- client_lockrec_init (fdctx, local);
-
- lock = get_next_recovery_lock (this, local);
- if (!lock) {
- gf_log (this->name, GF_LOG_DEBUG,
- "no locks found on fd");
- ret = -1;
- goto out;
- }
-
- frame = create_frame (this, this->ctx->pool);
- if (!frame) {
- gf_log (this->name, GF_LOG_ERROR,
- "creating of frame failed, lock recovery failed");
- ret = -1;
- goto out;
- }
-
- construct_reserve_lock (lock, frame, &reserve_flock);
-
- frame->local = local;
- local->fdctx = fdctx;
- local->client_lock = lock;
-
- STACK_WIND (frame, client_reserve_lock_cbk,
- this, this->fops->lk,
- lock->fd, F_RESLK_LCK, &reserve_flock, NULL);
-
-out:
- return ret;
-
-
-}
-
int32_t
client_dump_locks (char *name, inode_t *inode,
dict_t *dict)
generated by cgit (git 2.34.1) at 2024-04-19 14:28:37 +0000