diff options
Diffstat (limited to 'xlators/cluster/afr/src')
| -rw-r--r-- | xlators/cluster/afr/src/afr-common.c | 31 | ||||
| -rw-r--r-- | xlators/cluster/afr/src/afr-lk-common.c | 101 | ||||
| -rw-r--r-- | xlators/cluster/afr/src/afr-mem-types.h | 1 | ||||
| -rw-r--r-- | xlators/cluster/afr/src/afr.c | 3 | ||||
| -rw-r--r-- | xlators/cluster/afr/src/afr.h | 17 |
5 files changed, 150 insertions, 3 deletions
diff --git a/xlators/cluster/afr/src/afr-common.c b/xlators/cluster/afr/src/afr-common.c index 64e22c3229e..9d9f5d0414d 100644 --- a/xlators/cluster/afr/src/afr-common.c +++ b/xlators/cluster/afr/src/afr-common.c @@ -1197,6 +1197,16 @@ afr_fd_ctx_set (xlator_t *this, fd_t *fd) fd_ctx->up_count = priv->up_count; fd_ctx->down_count = priv->down_count; + fd_ctx->locked_on = GF_CALLOC (sizeof (*fd_ctx->locked_on), + priv->child_count, + gf_afr_mt_char); + if (!fd_ctx->locked_on) { + gf_log (this->name, GF_LOG_ERROR, + "Out of memory"); + ret = -ENOMEM; + goto unlock; + } + ret = __fd_ctx_set (fd, this, (uint64_t)(long) fd_ctx); INIT_LIST_HEAD (&fd_ctx->entries); @@ -1426,6 +1436,9 @@ afr_cleanup_fd_ctx (xlator_t *this, fd_t *fd) if (fd_ctx->opened_on) GF_FREE (fd_ctx->opened_on); + if (fd_ctx->locked_on) + GF_FREE (fd_ctx->locked_on); + GF_FREE (fd_ctx); } @@ -2298,8 +2311,9 @@ int32_t afr_lk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct flock *lock) { - afr_local_t *local = NULL; - afr_private_t *priv = NULL; + afr_local_t *local = NULL; + afr_private_t *priv = NULL; + int ret = 0; int child_index = -1; @@ -2339,7 +2353,18 @@ afr_lk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, } else { /* locking has succeeded on all nodes that are up */ - AFR_STACK_UNWIND (lk, frame, local->op_ret, local->op_errno, + ret = afr_mark_locked_nodes (this, local->fd, + local->cont.lk.locked_nodes); + if (ret) + gf_log (this->name, GF_LOG_DEBUG, + "Could not save locked nodes info in fdctx"); + + ret = afr_save_locked_fd (this, local->fd); + if (ret) + gf_log (this->name, GF_LOG_DEBUG, + "Could not save locked fd"); + + AFR_STACK_UNWIND (lk, frame, local->op_ret, local->op_errno, &local->cont.lk.ret_flock); } diff --git a/xlators/cluster/afr/src/afr-lk-common.c b/xlators/cluster/afr/src/afr-lk-common.c index ee53d1d7bfb..de95a6c763b 100644 --- a/xlators/cluster/afr/src/afr-lk-common.c +++ b/xlators/cluster/afr/src/afr-lk-common.c @@ -1678,3 +1678,104 @@ afr_unlock (call_frame_t *frame, xlator_t *this) return 0; } + +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; + + afr_fd_ctx_set (this, fd); + if (ret < 0) + goto out; + + ret = fd_ctx_get (fd, this, &tmp); + 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) { + gf_log (this->name, GF_LOG_ERROR, + "Out of memory"); + ret = -1; + goto out; + } + + 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_DEBUG, + "fd=%p could not be saved"); + goto unlock; + } + } +unlock: + pthread_mutex_unlock (&priv->mutex); + + return ret; +} diff --git a/xlators/cluster/afr/src/afr-mem-types.h b/xlators/cluster/afr/src/afr-mem-types.h index c1a86b8275b..31a80e8f57a 100644 --- a/xlators/cluster/afr/src/afr-mem-types.h +++ b/xlators/cluster/afr/src/afr-mem-types.h @@ -41,6 +41,7 @@ enum gf_afr_mem_types_ { gf_afr_mt_loc_t, gf_afr_mt_entry_name, gf_afr_mt_pump_priv, + gf_afr_mt_locked_fd, gf_afr_mt_end }; #endif diff --git a/xlators/cluster/afr/src/afr.c b/xlators/cluster/afr/src/afr.c index 09094bdbe58..69b281d973e 100644 --- a/xlators/cluster/afr/src/afr.c +++ b/xlators/cluster/afr/src/afr.c @@ -641,6 +641,9 @@ init (xlator_t *this) priv->first_lookup = 1; priv->root_inode = NULL; + pthread_mutex_init (&priv->mutex, NULL); + INIT_LIST_HEAD (&priv->saved_fds); + ret = 0; out: return ret; diff --git a/xlators/cluster/afr/src/afr.h b/xlators/cluster/afr/src/afr.h index 26f2c989f4e..68b4a1e305e 100644 --- a/xlators/cluster/afr/src/afr.h +++ b/xlators/cluster/afr/src/afr.h @@ -85,6 +85,9 @@ typedef struct _afr_private { struct _pump_private *pump_private; /* Set if we are loaded as pump */ int use_afr_in_pump; + + pthread_mutex_t mutex; + struct list_head saved_fds; /* list of fds on which locks have succeeded */ } afr_private_t; typedef struct { @@ -262,6 +265,11 @@ typedef struct { } afr_internal_lock_t; +typedef struct _afr_locked_fd { + fd_t *fd; + struct list_head list; +} afr_locked_fd_t; + typedef struct _afr_local { unsigned int call_count; unsigned int success_count; @@ -619,6 +627,8 @@ typedef struct { int hit, miss; gf_boolean_t failed_over; struct list_head entries; /* needed for readdir failover */ + + unsigned char *locked_on; /* which subvolumes locks have been successful */ } afr_fd_ctx_t; @@ -655,6 +665,13 @@ int32_t afr_notify (xlator_t *this, int32_t event, void *data, ...); +int +afr_save_locked_fd (xlator_t *this, fd_t *fd); + +int +afr_mark_locked_nodes (xlator_t *this, fd_t *fd, + unsigned char *locked_nodes); + void afr_set_lk_owner (call_frame_t *frame, xlator_t *this); |