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Diffstat (limited to 'xlators/cluster/afr/src/afr-lk-common.c')
-rw-r--r--xlators/cluster/afr/src/afr-lk-common.c509
1 files changed, 1 insertions, 508 deletions
diff --git a/xlators/cluster/afr/src/afr-lk-common.c b/xlators/cluster/afr/src/afr-lk-common.c
index 060d78f3505..a2a758f35af 100644
--- a/xlators/cluster/afr/src/afr-lk-common.c
+++ b/xlators/cluster/afr/src/afr-lk-common.c
@@ -580,22 +580,6 @@ initialize_inodelk_variables (call_frame_t *frame, xlator_t *this)
return 0;
}
-loc_t *
-lower_path (loc_t *l1, const char *b1, loc_t *l2, const char *b2)
-{
- int ret = 0;
-
- ret = uuid_compare (l1->inode->gfid, l2->inode->gfid);
-
- if (ret == 0)
- ret = strcmp (b1, b2);
-
- if (ret <= 0)
- return l1;
- else
- return l2;
-}
-
int
afr_lockee_locked_nodes_count (afr_internal_lock_t *int_lock)
{
@@ -1213,8 +1197,7 @@ afr_blocking_lock (call_frame_t *frame, xlator_t *this)
case AFR_ENTRY_RENAME_TRANSACTION:
case AFR_ENTRY_TRANSACTION:
- up_count = afr_up_children_count (local->child_up,
- priv->child_count);
+ up_count = AFR_COUNT (local->child_up, priv->child_count);
int_lock->lk_call_count = int_lock->lk_expected_count
= (int_lock->lockee_count *
up_count);
@@ -1648,496 +1631,6 @@ afr_unlock (call_frame_t *frame, xlator_t *this)
}
int
-afr_mark_locked_nodes (xlator_t *this, fd_t *fd,
- unsigned char *locked_nodes)
-{
- afr_private_t *priv = NULL;
- afr_fd_ctx_t *fdctx = NULL;
- uint64_t tmp = 0;
- int ret = 0;
-
- priv = this->private;
-
- ret = afr_fd_ctx_set (this, fd);
- if (ret)
- goto out;
-
- ret = fd_ctx_get (fd, this, &tmp);
- if (ret) {
- gf_log (this->name, GF_LOG_INFO,
- "failed to get the fd ctx");
- goto out;
- }
- fdctx = (afr_fd_ctx_t *) (long) tmp;
-
- GF_ASSERT (fdctx->locked_on);
-
- memcpy (fdctx->locked_on, locked_nodes,
- priv->child_count);
-
-out:
- return ret;
-}
-
-static int
-__is_fd_saved (xlator_t *this, fd_t *fd)
-{
- afr_locked_fd_t *locked_fd = NULL;
- afr_private_t *priv = NULL;
- int found = 0;
-
- priv = this->private;
-
- list_for_each_entry (locked_fd, &priv->saved_fds, list) {
- if (locked_fd->fd == fd) {
- found = 1;
- break;
- }
- }
-
- return found;
-}
-
-static int
-__afr_save_locked_fd (xlator_t *this, fd_t *fd)
-{
- afr_private_t *priv = NULL;
- afr_locked_fd_t *locked_fd = NULL;
- int ret = 0;
-
- priv = this->private;
-
- locked_fd = GF_CALLOC (1, sizeof (*locked_fd),
- gf_afr_mt_locked_fd);
- if (!locked_fd) {
- ret = -1;
- goto out;
- }
-
- locked_fd->fd = fd;
- INIT_LIST_HEAD (&locked_fd->list);
-
- list_add_tail (&locked_fd->list, &priv->saved_fds);
-
-out:
- return ret;
-}
-
-int
-afr_save_locked_fd (xlator_t *this, fd_t *fd)
-{
- afr_private_t *priv = NULL;
- int ret = 0;
-
- priv = this->private;
-
- pthread_mutex_lock (&priv->mutex);
- {
- if (__is_fd_saved (this, fd)) {
- gf_log (this->name, GF_LOG_DEBUG,
- "fd=%p already saved", fd);
- goto unlock;
- }
-
- ret = __afr_save_locked_fd (this, fd);
- if (ret) {
- gf_log (this->name, GF_LOG_INFO,
- "fd=%p could not be saved", fd);
- goto unlock;
- }
- }
-unlock:
- pthread_mutex_unlock (&priv->mutex);
-
- return ret;
-}
-
-static int
-afr_lock_recovery_cleanup (call_frame_t *frame, xlator_t *this)
-{
- afr_local_t *local = NULL;
- afr_locked_fd_t *locked_fd = NULL;
-
- local = frame->local;
-
- locked_fd = local->locked_fd;
-
- STACK_DESTROY (frame->root);
- afr_local_cleanup (local, this);
-
- afr_save_locked_fd (this, locked_fd->fd);
-
- return 0;
-
-}
-
-static int
-afr_get_source_lock_recovery (xlator_t *this, fd_t *fd)
-{
- afr_fd_ctx_t *fdctx = NULL;
- afr_private_t *priv = NULL;
- uint64_t tmp = 0;
- int i = 0;
- int source_child = -1;
- int ret = 0;
-
- priv = this->private;
-
- ret = fd_ctx_get (fd, this, &tmp);
- if (ret)
- goto out;
-
- fdctx = (afr_fd_ctx_t *) (long) tmp;
-
- for (i = 0; i < priv->child_count; i++) {
- if (fdctx->locked_on[i]) {
- gf_log (this->name, GF_LOG_DEBUG,
- "Found lock recovery source=%d", i);
- source_child = i;
- break;
- }
- }
-
-out:
- return source_child;
-
-}
-
-int32_t
-afr_get_locks_fd_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);
-int32_t
-afr_recover_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)
-{
- afr_local_t *local = NULL;
- afr_private_t *priv = NULL;
- int32_t source_child = 0;
- struct gf_flock flock = {0,};
-
- local = frame->local;
- priv = this->private;
-
- if (op_ret) {
- gf_log (this->name, GF_LOG_INFO,
- "lock recovery failed");
- goto cleanup;
- }
-
- source_child = local->source_child;
-
- memcpy (&flock, lock, sizeof (*lock));
-
- STACK_WIND_COOKIE (frame, afr_get_locks_fd_cbk,
- (void *) (long) source_child,
- priv->children[source_child],
- priv->children[source_child]->fops->lk,
- local->fd, F_GETLK_FD, &flock, NULL);
-
- return 0;
-
-cleanup:
- afr_lock_recovery_cleanup (frame, this);
- return 0;
-}
-
-int
-afr_recover_lock (call_frame_t *frame, xlator_t *this,
- struct gf_flock *flock)
-{
- afr_local_t *local = NULL;
- afr_private_t *priv = NULL;
- int32_t lock_recovery_child = 0;
-
- priv = this->private;
- local = frame->local;
-
- lock_recovery_child = local->lock_recovery_child;
-
- frame->root->lk_owner = flock->l_owner;
-
- STACK_WIND_COOKIE (frame, afr_recover_lock_cbk,
- (void *) (long) lock_recovery_child,
- priv->children[lock_recovery_child],
- priv->children[lock_recovery_child]->fops->lk,
- local->fd, F_SETLK, flock, NULL);
-
- return 0;
-}
-
-static int
-is_afr_lock_eol (struct gf_flock *lock)
-{
- int ret = 0;
-
- if ((lock->l_type == GF_LK_EOL))
- ret = 1;
-
- return ret;
-}
-
-int32_t
-afr_get_locks_fd_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)
-{
- if (op_ret) {
- gf_log (this->name, GF_LOG_INFO,
- "Failed to get locks on fd");
- goto cleanup;
- }
-
- gf_log (this->name, GF_LOG_DEBUG,
- "Got a lock on fd");
-
- if (is_afr_lock_eol (lock)) {
- gf_log (this->name, GF_LOG_INFO,
- "Reached EOL on locks on fd");
- goto cleanup;
- }
-
- afr_recover_lock (frame, this, lock);
-
- return 0;
-
-cleanup:
- afr_lock_recovery_cleanup (frame, this);
-
- return 0;
-}
-
-static int
-afr_lock_recovery (call_frame_t *frame, xlator_t *this)
-{
- afr_local_t *local = NULL;
- afr_private_t *priv = NULL;
- fd_t *fd = NULL;
- int ret = 0;
- int32_t source_child = 0;
- struct gf_flock flock = {0,};
-
- priv = this->private;
- local = frame->local;
-
- fd = local->fd;
-
- source_child = afr_get_source_lock_recovery (this, fd);
- if (source_child < 0) {
- gf_log (this->name, GF_LOG_ERROR,
- "Could not recover locks due to lock "
- "split brain");
- ret = -1;
- goto out;
- }
-
- local->source_child = source_child;
-
- /* the flock can be zero filled as we're querying incrementally
- the locks held on the fd.
- */
- STACK_WIND_COOKIE (frame, afr_get_locks_fd_cbk,
- (void *) (long) source_child,
- priv->children[source_child],
- priv->children[source_child]->fops->lk,
- local->fd, F_GETLK_FD, &flock, NULL);
-
-out:
- return ret;
-}
-
-
-static int
-afr_mark_fd_opened (xlator_t *this, fd_t *fd, int32_t child_index)
-{
- afr_fd_ctx_t *fdctx = NULL;
- uint64_t tmp = 0;
- int ret = 0;
-
- ret = fd_ctx_get (fd, this, &tmp);
- if (ret)
- goto out;
-
- fdctx = (afr_fd_ctx_t *) (long) tmp;
-
- fdctx->opened_on[child_index] = AFR_FD_OPENED;
-
-out:
- return ret;
-}
-
-int32_t
-afr_lock_recovery_preopen_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
- int32_t op_ret, int32_t op_errno, fd_t *fd,
- dict_t *xdata)
-{
- int32_t child_index = (long )cookie;
- int ret = 0;
-
- if (op_ret) {
- gf_log (this->name, GF_LOG_INFO,
- "Reopen during lock-recovery failed");
- goto cleanup;
- }
-
- gf_log (this->name, GF_LOG_DEBUG,
- "Open succeeded => proceed to recover locks");
-
- ret = afr_lock_recovery (frame, this);
- if (ret) {
- gf_log (this->name, GF_LOG_INFO,
- "Lock recovery failed");
- goto cleanup;
- }
-
- ret = afr_mark_fd_opened (this, fd, child_index);
- if (ret) {
- gf_log (this->name, GF_LOG_INFO,
- "Marking fd open failed");
- goto cleanup;
- }
-
- return 0;
-
-cleanup:
- afr_lock_recovery_cleanup (frame, this);
- return 0;
-}
-
-static int
-afr_lock_recovery_preopen (call_frame_t *frame, xlator_t *this)
-{
- afr_private_t *priv = NULL;
- afr_local_t *local = NULL;
- uint64_t tmp = 0;
- afr_fd_ctx_t *fdctx = NULL;
- loc_t loc = {0,};
- int32_t child_index = 0;
- int ret = 0;
-
- priv = this->private;
- local = frame->local;
-
- GF_ASSERT (local && local->fd);
-
- ret = fd_ctx_get (local->fd, this, &tmp);
- if (ret)
- gf_log (this->name, GF_LOG_WARNING,
- "%s: failed to get the context of fd",
- uuid_utoa (local->fd->inode->gfid));
- fdctx = (afr_fd_ctx_t *) (long) tmp;
- /* TODO: instead we should return from the function */
- GF_ASSERT (fdctx);
-
- child_index = local->lock_recovery_child;
-
- inode_path (local->fd->inode, NULL, (char **)&loc.path);
- loc.name = strrchr (loc.path, '/');
- loc.inode = inode_ref (local->fd->inode);
- loc.parent = inode_parent (local->fd->inode, 0, NULL);
-
-
- STACK_WIND_COOKIE (frame, afr_lock_recovery_preopen_cbk,
- (void *)(long) child_index,
- priv->children[child_index],
- priv->children[child_index]->fops->open,
- &loc, fdctx->flags, local->fd, NULL);
-
- return 0;
-}
-
-static int
-is_fd_opened (fd_t *fd, int32_t child_index)
-{
- afr_fd_ctx_t *fdctx = NULL;
- uint64_t tmp = 0;
- int ret = 0;
-
- ret = fd_ctx_get (fd, THIS, &tmp);
- if (ret)
- goto out;
-
- fdctx = (afr_fd_ctx_t *) (long) tmp;
-
- if (fdctx->opened_on[child_index] == AFR_FD_OPENED)
- ret = 1;
-
-out:
- return ret;
-}
-
-int
-afr_attempt_lock_recovery (xlator_t *this, int32_t child_index)
-{
- call_frame_t *frame = NULL;
- afr_private_t *priv = NULL;
- afr_local_t *local = NULL;
- afr_locked_fd_t *locked_fd = NULL;
- afr_locked_fd_t *tmp = NULL;
- int ret = -1;
- struct list_head locks_list = {0,};
- int32_t op_errno = 0;
-
-
- priv = this->private;
-
- if (list_empty (&priv->saved_fds))
- goto out;
-
- frame = create_frame (this, this->ctx->pool);
- if (!frame) {
- ret = -1;
- goto out;
- }
-
- AFR_LOCAL_ALLOC_OR_GOTO (frame->local, out);
- local = frame->local;
- ret = afr_local_init (local, priv, &op_errno);
- if (ret < 0) {
- ret = -1;
- goto out;
- }
-
- frame->local = local;
-
- INIT_LIST_HEAD (&locks_list);
-
- pthread_mutex_lock (&priv->mutex);
- {
- list_splice_init (&priv->saved_fds, &locks_list);
- }
- pthread_mutex_unlock (&priv->mutex);
-
- list_for_each_entry_safe (locked_fd, tmp,
- &locks_list, list) {
-
- list_del_init (&locked_fd->list);
-
- local->fd = fd_ref (locked_fd->fd);
- local->lock_recovery_child = child_index;
- local->locked_fd = locked_fd;
-
- if (!is_fd_opened (locked_fd->fd, child_index)) {
- gf_log (this->name, GF_LOG_DEBUG,
- "attempting open before lock "
- "recovery");
- afr_lock_recovery_preopen (frame, this);
- } else {
- gf_log (this->name, GF_LOG_DEBUG,
- "attempting lock recovery "
- "without a preopen");
- afr_lock_recovery (frame, this);
- }
- }
-
-out:
- if ((ret < 0) && frame)
- AFR_STACK_DESTROY (frame);
- return ret;
-}
-
-int
afr_lk_transfer_datalock (call_frame_t *dst, call_frame_t *src, char *dom,
unsigned int child_count)
{
generated by cgit (git 2.34.1) at 2024-11-17 12:54:12 +0000