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authorPranith Kumar K <pkarampu@redhat.com>2018-01-31 16:41:14 +0530
committerPranith Kumar Karampuri <pkarampu@redhat.com>2018-03-14 13:32:35 +0000
commit346714305f9de30d5f78494091770c1555c601bb (patch)
treeebdb744fd1858a98495e77069cb4e670b2ef87c6 /xlators/cluster
parentf32f85c4e6c8128643e1f88fe981a63680e79fe0 (diff)
cluster/afr: Make AFR eager-locking similar to EC
Problem: 1) Afr's eager-lock only works for data transactions. 2) When there are conflicting writes, write with conflicting region initiates unlock of eager-lock leading to extra pre-ops and post-ops on the file. When eager-lock goes off, it leads to extra fsyncs for random-write workload in afr. Solution (that is modeled after EC): In EC, when there is a conflicting write, it waits for the current write to complete before it winds the conflicted write. This leads to better utilization of network and disk, because we will not be doing extra xattrops and FSYNCs and inodelk/unlock. Moved fd based counters to inode based counters. I tried to model the solution based on EC's locking, but it is not similar to AFR because we had to keep backward compatibility. Lifecycle of lock: ================== First transaction is added to inode->owners list and an inodelk will be sent on the wire. All the next transactions will be put in inode->waiters list until the first transaction completes inodelk and [f]xattrop completely. Once [f]xattrop also completes, all the requests in the inode->waiters list are checked if it conflict with any of the existing locks which are in inode->owners list and if not are added to inode->owners list and resumed with doing transaction. When these transactions complete fop phase they will be moved to inode->post_op list and resume the transactions that were paused because of conflicts. Post-op and unlock will not be issued on the wire until that is the last transaction on that inode. Last transaction when it has to perform post-op can choose to sleep for deyed-post-op-secs value. During that time if any other transaction comes, it will wake up the sleeping transaction and takes over the ownership of the lock and the cycle continues. If the dealyed-post-op-secs expire, then the timer thread will wakeup the sleeping transaction and it will set lock->release to true and starts doing post-op and then unlock. During this time if any other transactions come, they will be put in inode->frozen list. Once the previous unlock comes it will move the frozen list to waiters list and moves the first element from this waiters-list to owners-list and attempts the lock and the cycle continues. This is the general idea. There is logic at the time of dealying and at the time of new transaction or in flush fop to wakeup existing sleeping transactions or choosing whether to delay a transaction etc, which is subjected to change based on future enhancements etc. Fixes: #418 BUG: 1549606 Change-Id: I88b570bbcf332a27c82d2767dfa82472f60055dc Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Diffstat (limited to 'xlators/cluster')
-rw-r--r--xlators/cluster/afr/src/afr-common.c315
-rw-r--r--xlators/cluster/afr/src/afr-inode-write.c6
-rw-r--r--xlators/cluster/afr/src/afr-lk-common.c348
-rw-r--r--xlators/cluster/afr/src/afr-self-heal-common.c13
-rw-r--r--xlators/cluster/afr/src/afr-self-heal-data.c14
-rw-r--r--xlators/cluster/afr/src/afr-self-heal.h2
-rw-r--r--xlators/cluster/afr/src/afr-transaction.c913
-rw-r--r--xlators/cluster/afr/src/afr-transaction.h13
-rw-r--r--xlators/cluster/afr/src/afr.h97
9 files changed, 813 insertions, 908 deletions
diff --git a/xlators/cluster/afr/src/afr-common.c b/xlators/cluster/afr/src/afr-common.c
index c9953139b7e..bfd8c2e8c2c 100644
--- a/xlators/cluster/afr/src/afr-common.c
+++ b/xlators/cluster/afr/src/afr-common.c
@@ -121,37 +121,77 @@ afr_is_possibly_under_txn (afr_transaction_type type, afr_local_t *local,
return _gf_false;
}
+static void
+afr_inode_ctx_destroy (afr_inode_ctx_t *ctx)
+{
+ int i = 0;
+
+ if (!ctx)
+ return;
+
+ for (i = 0; i < AFR_NUM_CHANGE_LOGS; i++) {
+ GF_FREE (ctx->pre_op_done[i]);
+ }
+
+ GF_FREE (ctx);
+}
+
int
__afr_inode_ctx_get (xlator_t *this, inode_t *inode, afr_inode_ctx_t **ctx)
{
- uint64_t ctx_int = 0;
- int ret = -1;
- afr_inode_ctx_t *tmp_ctx = NULL;
+ uint64_t ctx_int = 0;
+ int ret = -1;
+ int i = -1;
+ int num_locks = -1;
+ afr_inode_ctx_t *ictx = NULL;
+ afr_lock_t *lock = NULL;
+ afr_private_t *priv = this->private;
ret = __inode_ctx_get (inode, this, &ctx_int);
- if (ret) {
- tmp_ctx = GF_CALLOC (1, sizeof (afr_inode_ctx_t),
- gf_afr_mt_inode_ctx_t);
- if (!tmp_ctx)
- goto out;
+ if (ret == 0) {
+ *ctx = (afr_inode_ctx_t *)ctx_int;
+ return 0;
+ }
- ctx_int = (long) tmp_ctx;
- ret = __inode_ctx_set (inode, this, &ctx_int);
- if (ret) {
- GF_FREE (tmp_ctx);
+ ictx = GF_CALLOC (1, sizeof (afr_inode_ctx_t), gf_afr_mt_inode_ctx_t);
+ if (!ictx)
+ goto out;
+
+ for (i = 0; i < AFR_NUM_CHANGE_LOGS; i++) {
+ ictx->pre_op_done[i] = GF_CALLOC (sizeof *ictx->pre_op_done[i],
+ priv->child_count,
+ gf_afr_mt_int32_t);
+ if (!ictx->pre_op_done[i]) {
+ ret = -ENOMEM;
goto out;
}
- tmp_ctx->spb_choice = -1;
- tmp_ctx->read_subvol = 0;
- tmp_ctx->write_subvol = 0;
- tmp_ctx->lock_count = 0;
- } else {
- tmp_ctx = (afr_inode_ctx_t *) ctx_int;
}
- *ctx = tmp_ctx;
+ num_locks = sizeof(ictx->lock)/sizeof(afr_lock_t);
+ for (i = 0; i < num_locks; i++) {
+ lock = &ictx->lock[i];
+ INIT_LIST_HEAD (&lock->post_op);
+ INIT_LIST_HEAD (&lock->frozen);
+ INIT_LIST_HEAD (&lock->waiting);
+ INIT_LIST_HEAD (&lock->owners);
+ }
+
+ ctx_int = (uint64_t)ictx;
+ ret = __inode_ctx_set (inode, this, &ctx_int);
+ if (ret) {
+ goto out;
+ }
+
+ ictx->spb_choice = -1;
+ ictx->read_subvol = 0;
+ ictx->write_subvol = 0;
+ ictx->lock_count = 0;
ret = 0;
+ *ctx = ictx;
out:
+ if (ret) {
+ afr_inode_ctx_destroy (ictx);
+ }
return ret;
}
@@ -1752,10 +1792,6 @@ afr_local_transaction_cleanup (afr_local_t *local, xlator_t *this)
GF_FREE (local->internal_lock.locked_nodes);
- for (i = 0; local->internal_lock.inodelk[i].domain; i++) {
- GF_FREE (local->internal_lock.inodelk[i].locked_nodes);
- }
-
GF_FREE (local->internal_lock.lower_locked_nodes);
afr_entry_lockee_cleanup (&local->internal_lock);
@@ -1772,7 +1808,6 @@ afr_local_transaction_cleanup (afr_local_t *local, xlator_t *this)
GF_FREE (local->transaction.changelog_xdata);
}
- GF_FREE (local->transaction.eager_lock);
GF_FREE (local->transaction.failed_subvols);
GF_FREE (local->transaction.basename);
@@ -1819,16 +1854,6 @@ afr_local_replies_wipe (afr_local_t *local, afr_private_t *priv)
memset (local->replies, 0, sizeof(*local->replies) * priv->child_count);
}
-void
-afr_remove_eager_lock_stub (afr_local_t *local)
-{
- LOCK (&local->fd->lock);
- {
- list_del_init (&local->transaction.eager_locked);
- }
- UNLOCK (&local->fd->lock);
-}
-
static gf_boolean_t
afr_fop_lock_is_unlock (call_frame_t *frame)
{
@@ -1933,10 +1958,6 @@ afr_local_cleanup (afr_local_t *local, xlator_t *this)
syncbarrier_destroy (&local->barrier);
- if (local->transaction.eager_lock_on &&
- !list_empty (&local->transaction.eager_locked))
- afr_remove_eager_lock_stub (local);
-
afr_local_transaction_cleanup (local, this);
priv = this->private;
@@ -3228,22 +3249,8 @@ out:
void
_afr_cleanup_fd_ctx (afr_fd_ctx_t *fd_ctx)
{
- int i = 0;
-
-
- for (i = 0; i < AFR_NUM_CHANGE_LOGS; i++)
- GF_FREE (fd_ctx->pre_op_done[i]);
-
GF_FREE (fd_ctx->opened_on);
-
- GF_FREE (fd_ctx->lock_piggyback);
-
- GF_FREE (fd_ctx->lock_acquired);
-
- pthread_mutex_destroy (&fd_ctx->delay_lock);
-
GF_FREE (fd_ctx);
-
return;
}
@@ -3261,15 +3268,7 @@ afr_cleanup_fd_ctx (xlator_t *this, fd_t *fd)
fd_ctx = (afr_fd_ctx_t *)(long) ctx;
if (fd_ctx) {
- /*no need to take any locks*/
- if (!list_empty (&fd_ctx->eager_locked))
- gf_msg (this->name, GF_LOG_WARNING, 0,
- AFR_MSG_INVALID_DATA, "%s: Stale "
- "Eager-lock stubs found",
- uuid_utoa (fd->inode->gfid));
-
_afr_cleanup_fd_ctx (fd_ctx);
-
}
out:
@@ -3350,23 +3349,6 @@ __afr_fd_ctx_set (xlator_t *this, fd_t *fd)
goto out;
}
- ret = pthread_mutex_init (&fd_ctx->delay_lock, NULL);
- if (ret) {
- GF_FREE (fd_ctx);
- fd_ctx = NULL;
- goto out;
- }
-
- for (i = 0; i < AFR_NUM_CHANGE_LOGS; i++) {
- fd_ctx->pre_op_done[i] = GF_CALLOC (sizeof (*fd_ctx->pre_op_done[i]),
- priv->child_count,
- gf_afr_mt_int32_t);
- if (!fd_ctx->pre_op_done[i]) {
- ret = -ENOMEM;
- goto out;
- }
- }
-
fd_ctx->opened_on = GF_CALLOC (sizeof (*fd_ctx->opened_on),
priv->child_count,
gf_afr_mt_int32_t);
@@ -3382,26 +3364,8 @@ __afr_fd_ctx_set (xlator_t *this, fd_t *fd)
fd_ctx->opened_on[i] = AFR_FD_NOT_OPENED;
}
- fd_ctx->lock_piggyback = GF_CALLOC (sizeof (*fd_ctx->lock_piggyback),
- priv->child_count,
- gf_afr_mt_char);
- if (!fd_ctx->lock_piggyback) {
- ret = -ENOMEM;
- goto out;
- }
-
- fd_ctx->lock_acquired = GF_CALLOC (sizeof (*fd_ctx->lock_acquired),
- priv->child_count,
- gf_afr_mt_char);
- if (!fd_ctx->lock_acquired) {
- ret = -ENOMEM;
- goto out;
- }
-
fd_ctx->readdir_subvol = -1;
- INIT_LIST_HEAD (&fd_ctx->eager_locked);
-
ret = __fd_ctx_set (fd, this, (uint64_t)(long) fd_ctx);
if (ret)
gf_msg_debug (this->name, 0,
@@ -3473,12 +3437,70 @@ afr_flush_wrapper (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata)
return 0;
}
+afr_local_t*
+afr_wakeup_same_fd_delayed_op (xlator_t *this, afr_lock_t *lock, fd_t *fd)
+{
+ afr_local_t *local = NULL;
+
+ if (lock->delay_timer) {
+ local = list_entry(lock->post_op.next, afr_local_t,
+ transaction.owner_list);
+ if (fd == local->fd) {
+ if (gf_timer_call_cancel (this->ctx,
+ lock->delay_timer)) {
+ local = NULL;
+ } else {
+ lock->delay_timer = NULL;
+ }
+ } else {
+ local = NULL;
+ }
+ }
+
+ return local;
+}
+
+void
+afr_delayed_changelog_wake_resume (xlator_t *this, inode_t *inode,
+ call_stub_t *stub)
+{
+ afr_inode_ctx_t *ctx = NULL;
+ afr_lock_t *lock = NULL;
+ afr_local_t *metadata_local = NULL;
+ afr_local_t *data_local = NULL;
+ LOCK (&inode->lock);
+ {
+ (void)__afr_inode_ctx_get (this, inode, &ctx);
+ lock = &ctx->lock[AFR_DATA_TRANSACTION];
+ data_local = afr_wakeup_same_fd_delayed_op (this, lock,
+ stub->args.fd);
+ lock = &ctx->lock[AFR_METADATA_TRANSACTION];
+ metadata_local = afr_wakeup_same_fd_delayed_op (this, lock,
+ stub->args.fd);
+ }
+ UNLOCK (&inode->lock);
+
+ if (data_local) {
+ data_local->transaction.resume_stub = stub;
+ } else if (metadata_local) {
+ metadata_local->transaction.resume_stub = stub;
+ } else {
+ call_resume (stub);
+ }
+ if (data_local) {
+ afr_delayed_changelog_wake_up_cbk (data_local);
+ }
+ if (metadata_local) {
+ afr_delayed_changelog_wake_up_cbk (metadata_local);
+ }
+}
+
int
afr_flush (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata)
{
- afr_local_t *local = NULL;
- call_stub_t *stub = NULL;
- int op_errno = ENOMEM;
+ afr_local_t *local = NULL;
+ call_stub_t *stub = NULL;
+ int op_errno = ENOMEM;
local = AFR_FRAME_INIT (frame, op_errno);
if (!local)
@@ -3494,7 +3516,7 @@ afr_flush (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata)
if (!stub)
goto out;
- afr_delayed_changelog_wake_resume (this, fd, stub);
+ afr_delayed_changelog_wake_resume (this, fd->inode, stub);
return 0;
out:
@@ -3502,7 +3524,6 @@ out:
return 0;
}
-
int
afr_fsyncdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno, dict_t *xdata)
@@ -4565,7 +4586,7 @@ afr_forget (xlator_t *this, inode_t *inode)
return 0;
ctx = (afr_inode_ctx_t *)ctx_int;
- GF_FREE (ctx);
+ afr_inode_ctx_destroy (ctx);
return 0;
}
@@ -5382,21 +5403,6 @@ out:
}
int
-afr_inodelk_init (afr_inodelk_t *lk, char *dom, size_t child_count)
-{
- int ret = -ENOMEM;
-
- lk->domain = dom;
- lk->locked_nodes = GF_CALLOC (sizeof (*lk->locked_nodes),
- child_count, gf_afr_mt_char);
- if (NULL == lk->locked_nodes)
- goto out;
- ret = 0;
-out:
- return ret;
-}
-
-int
afr_transaction_local_init (afr_local_t *local, xlator_t *this)
{
int ret = -ENOMEM;
@@ -5407,25 +5413,9 @@ afr_transaction_local_init (afr_local_t *local, xlator_t *this)
if (ret < 0)
goto out;
- if ((local->transaction.type == AFR_DATA_TRANSACTION) ||
- (local->transaction.type == AFR_METADATA_TRANSACTION)) {
- ret = afr_inodelk_init (&local->internal_lock.inodelk[0],
- this->name, priv->child_count);
- if (ret < 0)
- goto out;
- }
-
ret = -ENOMEM;
local->pre_op_compat = priv->pre_op_compat;
- local->transaction.eager_lock =
- GF_CALLOC (sizeof (*local->transaction.eager_lock),
- priv->child_count,
- gf_afr_mt_int32_t);
-
- if (!local->transaction.eager_lock)
- goto out;
-
local->transaction.pre_op = GF_CALLOC (sizeof (*local->transaction.pre_op),
priv->child_count,
gf_afr_mt_char);
@@ -5457,9 +5447,9 @@ afr_transaction_local_init (afr_local_t *local, xlator_t *this)
if (!local->pending)
goto out;
- INIT_LIST_HEAD (&local->transaction.eager_locked);
-
ret = 0;
+ INIT_LIST_HEAD (&local->transaction.wait_list);
+ INIT_LIST_HEAD (&local->transaction.owner_list);
out:
return ret;
}
@@ -5494,24 +5484,6 @@ out:
return;
}
-void
-afr_handle_open_fd_count (call_frame_t *frame, xlator_t *this)
-{
- afr_local_t *local = NULL;
- afr_fd_ctx_t *fd_ctx = NULL;
-
- local = frame->local;
-
- if (!local->fd)
- return;
-
- fd_ctx = afr_fd_ctx_get (local->fd, this);
- if (!fd_ctx)
- return;
-
- fd_ctx->open_fd_count = local->open_fd_count;
-}
-
int**
afr_mark_pending_changelog (afr_private_t *priv, unsigned char *pending,
dict_t *xattr, ia_type_t iat)
@@ -5620,7 +5592,7 @@ out:
int
afr_selfheal_locked_data_inspect (call_frame_t *frame, xlator_t *this,
- inode_t *inode, gf_boolean_t *dsh,
+ fd_t *fd, gf_boolean_t *dsh,
gf_boolean_t *pflag)
{
int ret = -1;
@@ -5630,8 +5602,8 @@ afr_selfheal_locked_data_inspect (call_frame_t *frame, xlator_t *this,
unsigned char *healed_sinks = NULL;
unsigned char *undid_pending = NULL;
afr_private_t *priv = NULL;
- fd_t *fd = NULL;
struct afr_reply *locked_replies = NULL;
+ inode_t *inode = fd->inode;
priv = this->private;
data_lock = alloca0 (priv->child_count);
@@ -5640,18 +5612,6 @@ afr_selfheal_locked_data_inspect (call_frame_t *frame, xlator_t *this,
healed_sinks = alloca0 (priv->child_count);
undid_pending = alloca0 (priv->child_count);
- /* Heal-info does an open() on the file being examined so that the
- * current eager-lock holding client, if present, at some point sees
- * open-fd count being > 1 and releases the eager-lock so that heal-info
- * doesn't remain blocked forever until IO completes.
- */
- ret = afr_selfheal_data_open (this, inode, &fd);
- if (ret < 0) {
- gf_msg_debug (this->name, -ret, "%s: Failed to open",
- uuid_utoa (inode->gfid));
- goto out;
- }
-
locked_replies = alloca0 (sizeof (*locked_replies) * priv->child_count);
ret = afr_selfheal_inodelk (frame, this, inode, this->name,
@@ -5674,8 +5634,6 @@ afr_selfheal_locked_data_inspect (call_frame_t *frame, xlator_t *this,
out:
if (locked_replies)
afr_replies_wipe (locked_replies, priv->child_count);
- if (fd)
- fd_unref (fd);
return ret;
}
@@ -5760,6 +5718,7 @@ afr_selfheal_locked_inspect (call_frame_t *frame, xlator_t *this, uuid_t gfid,
{
int ret = -1;
+ fd_t *fd = NULL;
gf_boolean_t dsh = _gf_false;
gf_boolean_t msh = _gf_false;
gf_boolean_t esh = _gf_false;
@@ -5771,6 +5730,21 @@ afr_selfheal_locked_inspect (call_frame_t *frame, xlator_t *this, uuid_t gfid,
/* For every heal type hold locks and check if it indeed needs heal */
+
+ /* Heal-info does an open() on the file being examined so that the
+ * current eager-lock holding client, if present, at some point sees
+ * open-fd count being > 1 and releases the eager-lock so that heal-info
+ * doesn't remain blocked forever until IO completes.
+ */
+ if ((*inode)->ia_type == IA_IFREG) {
+ ret = afr_selfheal_data_open (this, *inode, &fd);
+ if (ret < 0) {
+ gf_msg_debug (this->name, -ret, "%s: Failed to open",
+ uuid_utoa ((*inode)->gfid));
+ goto out;
+ }
+ }
+
if (msh) {
ret = afr_selfheal_locked_metadata_inspect (frame, this,
*inode, &msh,
@@ -5780,7 +5754,7 @@ afr_selfheal_locked_inspect (call_frame_t *frame, xlator_t *this, uuid_t gfid,
}
if (dsh) {
- ret = afr_selfheal_locked_data_inspect (frame, this, *inode,
+ ret = afr_selfheal_locked_data_inspect (frame, this, fd,
&dsh, pending);
if (ret == -EIO || (ret == -EAGAIN))
goto out;
@@ -5795,6 +5769,8 @@ out:
*data_selfheal = dsh;
*entry_selfheal = esh;
*metadata_selfheal = msh;
+ if (fd)
+ fd_unref (fd);
return ret;
}
@@ -6429,6 +6405,7 @@ afr_write_subvol_reset (call_frame_t *frame, xlator_t *this)
local = frame->local;
LOCK(&local->inode->lock);
{
+ GF_ASSERT (local->inode_ctx->lock_count > 0);
local->inode_ctx->lock_count--;
if (!local->inode_ctx->lock_count)
diff --git a/xlators/cluster/afr/src/afr-inode-write.c b/xlators/cluster/afr/src/afr-inode-write.c
index 8893a7db670..9cab08c653a 100644
--- a/xlators/cluster/afr/src/afr-inode-write.c
+++ b/xlators/cluster/afr/src/afr-inode-write.c
@@ -344,14 +344,14 @@ afr_process_post_writev (call_frame_t *frame, xlator_t *this)
the xattrs are not reliably pointing at
a stale file.
*/
- afr_fd_report_unstable_write (this, local->fd);
+ afr_fd_report_unstable_write (this, local);
__afr_inode_write_finalize (frame, this);
afr_writev_handle_short_writes (frame, this);
if (local->update_open_fd_count)
- afr_handle_open_fd_count (frame, this);
+ local->inode_ctx->open_fd_count = local->open_fd_count;
}
@@ -2593,7 +2593,7 @@ afr_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t datasync,
local->op = GF_FOP_FSYNC;
local->cont.fsync.datasync = datasync;
- if (afr_fd_has_witnessed_unstable_write (this, fd)) {
+ if (afr_fd_has_witnessed_unstable_write (this, fd->inode)) {
/* don't care. we only wanted to CLEAR the bit */
}
diff --git a/xlators/cluster/afr/src/afr-lk-common.c b/xlators/cluster/afr/src/afr-lk-common.c
index 260815f23d2..be3de01924d 100644
--- a/xlators/cluster/afr/src/afr-lk-common.c
+++ b/xlators/cluster/afr/src/afr-lk-common.c
@@ -52,31 +52,6 @@ afr_entry_lockee_cmp (const void *l1, const void *l2)
int afr_lock_blocking (call_frame_t *frame, xlator_t *this, int child_index);
-static int
-afr_copy_locked_nodes (call_frame_t *frame, xlator_t *this);
-
-static uint64_t afr_lock_number = 1;
-
-static uint64_t
-get_afr_lock_number ()
-{
- return (++afr_lock_number);
-}
-
-int
-afr_set_lock_number (call_frame_t *frame, xlator_t *this)
-{
- afr_local_t *local = NULL;
- afr_internal_lock_t *int_lock = NULL;
-
- local = frame->local;
- int_lock = &local->internal_lock;
-
- int_lock->lock_number = get_afr_lock_number ();
-
- return 0;
-}
-
void
afr_set_lk_owner (call_frame_t *frame, xlator_t *this, void *lk_owner)
{
@@ -203,21 +178,16 @@ initialize_inodelk_variables (call_frame_t *frame, xlator_t *this)
afr_local_t *local = NULL;
afr_internal_lock_t *int_lock = NULL;
afr_private_t *priv = NULL;
- afr_inodelk_t *inodelk = NULL;
priv = this->private;
local = frame->local;
int_lock = &local->internal_lock;
- inodelk = afr_get_inodelk (int_lock, int_lock->domain);
-
- inodelk->lock_count = 0;
+ int_lock->lock_count = 0;
int_lock->lk_attempted_count = 0;
int_lock->lock_op_ret = -1;
int_lock->lock_op_errno = 0;
- memset (inodelk->locked_nodes, 0,
- sizeof (*inodelk->locked_nodes) * priv->child_count);
memset (int_lock->locked_nodes, 0,
sizeof (*int_lock->locked_nodes) * priv->child_count);
@@ -286,12 +256,7 @@ void
afr_update_uninodelk (afr_local_t *local, afr_internal_lock_t *int_lock,
int32_t child_index)
{
- afr_inodelk_t *inodelk = NULL;
-
- inodelk = afr_get_inodelk (int_lock, int_lock->domain);
- inodelk->locked_nodes[child_index] &= LOCKED_NO;
- if (local->transaction.eager_lock)
- local->transaction.eager_lock[child_index] = 0;
+ int_lock->locked_nodes[child_index] &= LOCKED_NO;
}
@@ -331,35 +296,27 @@ static int
afr_unlock_inodelk (call_frame_t *frame, xlator_t *this)
{
afr_internal_lock_t *int_lock = NULL;
- afr_inodelk_t *inodelk = NULL;
afr_local_t *local = NULL;
afr_private_t *priv = NULL;
struct gf_flock flock = {0,};
- struct gf_flock full_flock = {0,};
- struct gf_flock *flock_use = NULL;
int call_count = 0;
int i = 0;
- int piggyback = 0;
- afr_fd_ctx_t *fd_ctx = NULL;
-
local = frame->local;
int_lock = &local->internal_lock;
priv = this->private;
- inodelk = afr_get_inodelk (int_lock, int_lock->domain);
-
- flock.l_start = inodelk->flock.l_start;
- flock.l_len = inodelk->flock.l_len;
+ flock.l_start = int_lock->flock.l_start;
+ flock.l_len = int_lock->flock.l_len;
flock.l_type = F_UNLCK;
- full_flock.l_type = F_UNLCK;
- call_count = afr_locked_nodes_count (inodelk->locked_nodes,
+ call_count = afr_locked_nodes_count (int_lock->locked_nodes,
priv->child_count);
int_lock->lk_call_count = call_count;
if (!call_count) {
+ GF_ASSERT (!local->transaction.do_eager_unlock);
gf_msg_trace (this->name, 0,
"No internal locks unlocked");
@@ -367,64 +324,28 @@ afr_unlock_inodelk (call_frame_t *frame, xlator_t *this)
goto out;
}
- if (local->fd)
- fd_ctx = afr_fd_ctx_get (local->fd, this);
-
for (i = 0; i < priv->child_count; i++) {
- if ((inodelk->locked_nodes[i] & LOCKED_YES) != LOCKED_YES)
+ if ((int_lock->locked_nodes[i] & LOCKED_YES) != LOCKED_YES)
continue;
if (local->fd) {
- flock_use = &flock;
- if (!local->transaction.eager_lock[i]) {
- goto wind;
- }
-
- piggyback = 0;
-
- LOCK (&local->fd->lock);
- {
- if (fd_ctx->lock_piggyback[i]) {
- fd_ctx->lock_piggyback[i]--;
- piggyback = 1;
- } else {
- fd_ctx->lock_acquired[i]--;
- }
- }
- UNLOCK (&local->fd->lock);
-
- if (piggyback) {
- afr_unlock_inodelk_cbk (frame, (void *) (long) i,
- this, 1, 0, NULL);
- if (!--call_count)
- break;
- continue;
- }
-
- flock_use = &full_flock;
- wind:
STACK_WIND_COOKIE (frame, afr_unlock_inodelk_cbk,
(void *) (long)i,
priv->children[i],
priv->children[i]->fops->finodelk,
int_lock->domain, local->fd,
- F_SETLK, flock_use, NULL);
-
- if (!--call_count)
- break;
-
+ F_SETLK, &flock, NULL);
} else {
-
STACK_WIND_COOKIE (frame, afr_unlock_inodelk_cbk,
(void *) (long)i,
priv->children[i],
priv->children[i]->fops->inodelk,
int_lock->domain, &local->loc,
F_SETLK, &flock, NULL);
-
- if (!--call_count)
- break;
}
+
+ if (!--call_count)
+ break;
}
out:
return 0;
@@ -512,6 +433,18 @@ out:
}
+int32_t
+afr_unlock_now (call_frame_t *frame, xlator_t *this)
+{
+ afr_local_t *local = frame->local;
+
+ if (afr_is_inodelk_transaction(local->transaction.type))
+ afr_unlock_inodelk (frame, this);
+ else
+ afr_unlock_entrylk (frame, this);
+ return 0;
+}
+
static int32_t
afr_lock_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno, dict_t *xdata)
@@ -553,7 +486,7 @@ afr_lock_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
if ((op_ret == -1) &&
(op_errno == ENOSYS)) {
- afr_unlock (frame, this);
+ afr_unlock_now (frame, this);
} else {
if (op_ret == 0) {
if (local->transaction.type == AFR_ENTRY_TRANSACTION ||
@@ -598,38 +531,6 @@ afr_blocking_entrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
return 0;
}
-static int
-afr_copy_locked_nodes (call_frame_t *frame, xlator_t *this)
-{
- afr_internal_lock_t *int_lock = NULL;
- afr_inodelk_t *inodelk = NULL;
- afr_local_t *local = NULL;
- afr_private_t *priv = NULL;
-
- priv = this->private;
- local = frame->local;
- int_lock = &local->internal_lock;
-
- switch (local->transaction.type) {
- case AFR_DATA_TRANSACTION:
- case AFR_METADATA_TRANSACTION:
- inodelk = afr_get_inodelk (int_lock, int_lock->domain);
- memcpy (inodelk->locked_nodes, int_lock->locked_nodes,
- sizeof (*inodelk->locked_nodes) * priv->child_count);
- inodelk->lock_count = int_lock->lock_count;
- break;
-
- case AFR_ENTRY_RENAME_TRANSACTION:
- case AFR_ENTRY_TRANSACTION:
- /*entrylk_count is being used in both non-blocking and blocking
- * modes */
- break;
- }
-
- return 0;
-
-}
-
static gf_boolean_t
afr_is_entrylk (afr_transaction_type trans_type)
{
@@ -733,7 +634,6 @@ int
afr_lock_blocking (call_frame_t *frame, xlator_t *this, int cookie)
{
afr_internal_lock_t *int_lock = NULL;
- afr_inodelk_t *inodelk = NULL;
afr_local_t *local = NULL;
afr_private_t *priv = NULL;
struct gf_flock flock = {0,};
@@ -752,10 +652,9 @@ afr_lock_blocking (call_frame_t *frame, xlator_t *this, int cookie)
if (!is_entrylk) {
- inodelk = afr_get_inodelk (int_lock, int_lock->domain);
- flock.l_start = inodelk->flock.l_start;
- flock.l_len = inodelk->flock.l_len;
- flock.l_type = inodelk->flock.l_type;
+ flock.l_start = int_lock->flock.l_start;
+ flock.l_len = int_lock->flock.l_len;
+ flock.l_type = int_lock->flock.l_type;
}
if (local->fd) {
@@ -770,9 +669,7 @@ afr_lock_blocking (call_frame_t *frame, xlator_t *this, int cookie)
local->op_ret = -1;
int_lock->lock_op_ret = -1;
- afr_copy_locked_nodes (frame, this);
-
- afr_unlock (frame, this);
+ afr_unlock_now (frame, this);
return 0;
}
@@ -784,9 +681,7 @@ afr_lock_blocking (call_frame_t *frame, xlator_t *this, int cookie)
local->op_ret = -1;
int_lock->lock_op_ret = -1;
- afr_copy_locked_nodes (frame, this);
-
- afr_unlock(frame, this);
+ afr_unlock_now(frame, this);
return 0;
}
@@ -798,8 +693,6 @@ afr_lock_blocking (call_frame_t *frame, xlator_t *this, int cookie)
gf_msg_debug (this->name, 0,
"we're done locking");
- afr_copy_locked_nodes (frame, this);
-
int_lock->lock_op_ret = 0;
int_lock->lock_cbk (frame, this);
return 0;
@@ -815,7 +708,6 @@ afr_lock_blocking (call_frame_t *frame, xlator_t *this, int cookie)
case AFR_METADATA_TRANSACTION:
if (local->fd) {
-
STACK_WIND_COOKIE (frame, afr_blocking_inodelk_cbk,
(void *) (long) child_index,
priv->children[child_index],
@@ -824,7 +716,6 @@ afr_lock_blocking (call_frame_t *frame, xlator_t *this, int cookie)
F_SETLKW, &flock, NULL);
} else {
-
STACK_WIND_COOKIE (frame, afr_blocking_inodelk_cbk,
(void *) (long) child_index,
priv->children[child_index],
@@ -841,7 +732,6 @@ afr_lock_blocking (call_frame_t *frame, xlator_t *this, int cookie)
*and 'fd-less' children */
if (local->fd) {
-
STACK_WIND_COOKIE (frame, afr_blocking_entrylk_cbk,
(void *) (long) cookie,
priv->children[child_index],
@@ -850,7 +740,6 @@ afr_lock_blocking (call_frame_t *frame, xlator_t *this, int cookie)
int_lock->lockee[lockee_no].basename,
ENTRYLK_LOCK, ENTRYLK_WRLCK, NULL);
} else {
-
STACK_WIND_COOKIE (frame, afr_blocking_entrylk_cbk,
(void *) (long) cookie,
priv->children[child_index],
@@ -922,7 +811,6 @@ afr_nonblocking_entrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
local = frame->local;
int_lock = &local->internal_lock;
-
LOCK (&frame->lock);
{
if (op_ret < 0 ) {
@@ -969,7 +857,7 @@ afr_nonblocking_entrylk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
"with blocking calls",
int_lock->lock_count);
- afr_unlock(frame, this);
+ afr_unlock_now(frame, this);
}
}
@@ -1009,7 +897,7 @@ afr_nonblocking_entrylk (call_frame_t *frame, xlator_t *this)
local->op_errno = EINVAL;
int_lock->lock_op_errno = EINVAL;
- afr_unlock (frame, this);
+ afr_unlock_now (frame, this);
return -1;
}
@@ -1021,7 +909,7 @@ afr_nonblocking_entrylk (call_frame_t *frame, xlator_t *this)
gf_msg (this->name, GF_LOG_INFO, 0,
AFR_MSG_INFO_COMMON,
"fd not open on any subvolumes. aborting.");
- afr_unlock (frame, this);
+ afr_unlock_now (frame, this);
goto out;
}
@@ -1031,7 +919,6 @@ afr_nonblocking_entrylk (call_frame_t *frame, xlator_t *this)
index = i%copies;
lockee_no = i/copies;
if (local->child_up[index]) {
-
STACK_WIND_COOKIE (frame, afr_nonblocking_entrylk_cbk,
(void *) (long) i,
priv->children[index],
@@ -1053,7 +940,6 @@ afr_nonblocking_entrylk (call_frame_t *frame, xlator_t *this)
index = i%copies;
lockee_no = i/copies;
if (local->child_up[index]) {
-
STACK_WIND_COOKIE (frame, afr_nonblocking_entrylk_cbk,
(void *) (long) i,
priv->children[index],
@@ -1077,18 +963,12 @@ afr_nonblocking_inodelk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno, dict_t *xdata)
{
afr_internal_lock_t *int_lock = NULL;
- afr_inodelk_t *inodelk = NULL;
afr_local_t *local = NULL;
- afr_fd_ctx_t *fd_ctx = NULL;
int call_count = 0;
int child_index = (long) cookie;
local = frame->local;
int_lock = &local->internal_lock;
- inodelk = afr_get_inodelk (int_lock, int_lock->domain);
-
- if (local->fd)
- fd_ctx = afr_fd_ctx_get (local->fd, this);
LOCK (&frame->lock);
{
@@ -1105,43 +985,27 @@ afr_nonblocking_inodelk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int_lock->lock_op_errno = op_errno;
local->op_errno = op_errno;
}
- if (local->transaction.eager_lock)
- local->transaction.eager_lock[child_index] = 0;
} else {
- inodelk->locked_nodes[child_index] |= LOCKED_YES;
- inodelk->lock_count++;
-
- if (local->transaction.eager_lock &&
- local->transaction.eager_lock[child_index] &&
- local->fd) {
- /* piggybacked */
- if (op_ret == 1) {
- /* piggybacked */
- } else if (op_ret == 0) {
- /* lock acquired from server */
- fd_ctx->lock_acquired[child_index]++;
- }
- }
-
- if (local->transaction.type == AFR_DATA_TRANSACTION &&
- op_ret == 0) {
- LOCK(&local->inode->lock);
- {
- local->inode_ctx->lock_count++;
- }
- UNLOCK (&local->inode->lock);
- }
+ int_lock->locked_nodes[child_index] |= LOCKED_YES;
+ int_lock->lock_count++;
}
call_count = --int_lock->lk_call_count;
}
UNLOCK (&frame->lock);
+ if (op_ret == 0 && local->transaction.type == AFR_DATA_TRANSACTION) {
+ LOCK (&local->inode->lock);
+ {
+ local->inode_ctx->lock_count++;
+ }
+ UNLOCK (&local->inode->lock);
+ }
if (call_count == 0) {
gf_msg_trace (this->name, 0,
"Last inode locking reply received");
/* all locks successful. Proceed to call FOP */
- if (inodelk->lock_count == int_lock->lk_expected_count) {
+ if (int_lock->lock_count == int_lock->lk_expected_count) {
gf_msg_trace (this->name, 0,
"All servers locked. Calling the cbk");
int_lock->lock_op_ret = 0;
@@ -1155,7 +1019,7 @@ afr_nonblocking_inodelk_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
"Trying again with blocking calls",
int_lock->lock_count);
- afr_unlock(frame, this);
+ afr_unlock_now(frame, this);
}
}
@@ -1166,30 +1030,17 @@ int
afr_nonblocking_inodelk (call_frame_t *frame, xlator_t *this)
{
afr_internal_lock_t *int_lock = NULL;
- afr_inodelk_t *inodelk = NULL;
afr_local_t *local = NULL;
afr_private_t *priv = NULL;
afr_fd_ctx_t *fd_ctx = NULL;
int32_t call_count = 0;
int i = 0;
int ret = 0;
- struct gf_flock flock = {0,};
- struct gf_flock full_flock = {0,};
- struct gf_flock *flock_use = NULL;
- int piggyback = 0;
local = frame->local;
int_lock = &local->internal_lock;
priv = this->private;
- inodelk = afr_get_inodelk (int_lock, int_lock->domain);
-
- flock.l_start = inodelk->flock.l_start;
- flock.l_len = inodelk->flock.l_len;
- flock.l_type = inodelk->flock.l_type;
-
- full_flock.l_type = inodelk->flock.l_type;
-
initialize_inodelk_variables (frame, this);
if (local->fd) {
@@ -1205,88 +1056,48 @@ afr_nonblocking_inodelk (call_frame_t *frame, xlator_t *this)
local->op_errno = EINVAL;
int_lock->lock_op_errno = EINVAL;
- afr_unlock (frame, this);
+ afr_unlock_now (frame, this);
ret = -1;
goto out;
}
+ }
- call_count = internal_lock_count (frame, this);
- int_lock->lk_call_count = call_count;
- int_lock->lk_expected_count = call_count;
-
- if (!call_count) {
- gf_msg (this->name, GF_LOG_INFO, 0,
- AFR_MSG_SUBVOLS_DOWN,
- "All bricks are down, aborting.");
- afr_unlock (frame, this);
- goto out;
- }
-
- /* Send non-blocking inodelk calls only on up children
- and where the fd has been opened */
- for (i = 0; i < priv->child_count; i++) {
- if (!local->child_up[i])
- continue;
-
- flock_use = &flock;
- if (!local->transaction.eager_lock_on) {
- goto wind;
- }
-
- piggyback = 0;
- local->transaction.eager_lock[i] = 1;
-
- afr_set_delayed_post_op (frame, this);
+ call_count = internal_lock_count (frame, this);
+ int_lock->lk_call_count = call_count;
+ int_lock->lk_expected_count = call_count;
- LOCK (&local->fd->lock);
- {
- if (fd_ctx->lock_acquired[i]) {
- fd_ctx->lock_piggyback[i]++;
- piggyback = 1;
- }
- }
- UNLOCK (&local->fd->lock);
+ if (!call_count) {
+ gf_msg (this->name, GF_LOG_INFO, 0,
+ AFR_MSG_SUBVOLS_DOWN,
+ "All bricks are down, aborting.");
+ afr_unlock_now (frame, this);
+ goto out;
+ }
- if (piggyback) {
- /* (op_ret == 1) => indicate piggybacked lock */
- afr_nonblocking_inodelk_cbk (frame, (void *) (long) i,
- this, 1, 0, NULL);
- if (!--call_count)
- break;
- continue;
- }
- flock_use = &full_flock;
- wind:
+ /* Send non-blocking inodelk calls only on up children
+ and where the fd has been opened */
+ for (i = 0; i < priv->child_count; i++) {
+ if (!local->child_up[i])
+ continue;
+ if (local->fd) {
STACK_WIND_COOKIE (frame, afr_nonblocking_inodelk_cbk,
(void *) (long) i,
priv->children[i],
priv->children[i]->fops->finodelk,
int_lock->domain, local->fd,
- F_SETLK, flock_use, NULL);
-
- if (!--call_count)
- break;
- }
- } else {
- call_count = internal_lock_count (frame, this);
- int_lock->lk_call_count = call_count;
- int_lock->lk_expected_count = call_count;
-
- for (i = 0; i < priv->child_count; i++) {
- if (!local->child_up[i])
- continue;
+ F_SETLK, &int_lock->flock, NULL);
+ } else {
STACK_WIND_COOKIE (frame, afr_nonblocking_inodelk_cbk,
(void *) (long) i,
priv->children[i],
priv->children[i]->fops->inodelk,
int_lock->domain, &local->loc,
- F_SETLK, &flock, NULL);
-
- if (!--call_count)
- break;
+ F_SETLK, &int_lock->flock, NULL);
}
+ if (!--call_count)
+ break;
}
out:
return ret;
@@ -1296,13 +1107,32 @@ int32_t
afr_unlock (call_frame_t *frame, xlator_t *this)
{
afr_local_t *local = NULL;
+ afr_lock_t *lock = NULL;
local = frame->local;
- if (afr_is_inodelk_transaction(local->transaction.type))
- afr_unlock_inodelk (frame, this);
- else
- afr_unlock_entrylk (frame, this);
+ if (!local->transaction.eager_lock_on)
+ goto out;
+ lock = &local->inode_ctx->lock[local->transaction.type];
+ LOCK (&local->inode->lock);
+ {
+ list_del_init (&local->transaction.owner_list);
+ if (list_empty (&lock->owners) && list_empty (&lock->post_op)) {
+ local->transaction.do_eager_unlock = _gf_true;
+ /*TODO: Need to get metadata use on_disk and inherit/uninherit
+ *GF_ASSERT (!local->inode_ctx->on_disk[local->transaction.type]);
+ *GF_ASSERT (!local->inode_ctx->inherited[local->transaction.type]);
+ */
+ GF_ASSERT (lock->release);
+ }
+ }
+ UNLOCK (&local->inode->lock);
+ if (!local->transaction.do_eager_unlock) {
+ local->internal_lock.lock_cbk (frame, this);
+ return 0;
+ }
+out:
+ afr_unlock_now (frame, this);
return 0;
}
diff --git a/xlators/cluster/afr/src/afr-self-heal-common.c b/xlators/cluster/afr/src/afr-self-heal-common.c
index 7195dfe058c..dc380c6d280 100644
--- a/xlators/cluster/afr/src/afr-self-heal-common.c
+++ b/xlators/cluster/afr/src/afr-self-heal-common.c
@@ -2469,6 +2469,7 @@ afr_selfheal_do (call_frame_t *frame, xlator_t *this, uuid_t gfid)
int data_ret = 1;
int or_ret = 0;
inode_t *inode = NULL;
+ fd_t *fd = NULL;
gf_boolean_t data_selfheal = _gf_false;
gf_boolean_t metadata_selfheal = _gf_false;
gf_boolean_t entry_selfheal = _gf_false;
@@ -2493,8 +2494,16 @@ afr_selfheal_do (call_frame_t *frame, xlator_t *this, uuid_t gfid)
goto out;
}
+ if (inode->ia_type == IA_IFREG) {
+ ret = afr_selfheal_data_open (this, inode, &fd);
+ if (!fd) {
+ ret = -EIO;
+ goto out;
+ }
+ }
+
if (data_selfheal && dataheal_enabled)
- data_ret = afr_selfheal_data (frame, this, inode);
+ data_ret = afr_selfheal_data (frame, this, fd);
if (metadata_selfheal && priv->metadata_self_heal)
metadata_ret = afr_selfheal_metadata (frame, this, inode);
@@ -2516,6 +2525,8 @@ afr_selfheal_do (call_frame_t *frame, xlator_t *this, uuid_t gfid)
out:
if (inode)
inode_unref (inode);
+ if (fd)
+ fd_unref (fd);
return ret;
}
/*
diff --git a/xlators/cluster/afr/src/afr-self-heal-data.c b/xlators/cluster/afr/src/afr-self-heal-data.c
index 3cf5b32b01d..40dee7a7d6c 100644
--- a/xlators/cluster/afr/src/afr-self-heal-data.c
+++ b/xlators/cluster/afr/src/afr-self-heal-data.c
@@ -869,22 +869,15 @@ out:
}
int
-afr_selfheal_data (call_frame_t *frame, xlator_t *this, inode_t *inode)
+afr_selfheal_data (call_frame_t *frame, xlator_t *this, fd_t *fd)
{
afr_private_t *priv = NULL;
unsigned char *locked_on = NULL;
int ret = 0;
- fd_t *fd = NULL;
+ inode_t *inode = fd->inode;
priv = this->private;
- ret = afr_selfheal_data_open (this, inode, &fd);
- if (!fd) {
- gf_msg_debug (this->name, -ret, "%s: Failed to open",
- uuid_utoa (inode->gfid));
- return -EIO;
- }
-
locked_on = alloca0 (priv->child_count);
ret = afr_selfheal_tie_breaker_inodelk (frame, this, inode,
@@ -911,8 +904,5 @@ unlock:
afr_selfheal_uninodelk (frame, this, inode, priv->sh_domain, 0, 0,
locked_on);
- if (fd)
- fd_unref (fd);
-
return ret;
}
diff --git a/xlators/cluster/afr/src/afr-self-heal.h b/xlators/cluster/afr/src/afr-self-heal.h
index 8e976905e97..cd67d2a3192 100644
--- a/xlators/cluster/afr/src/afr-self-heal.h
+++ b/xlators/cluster/afr/src/afr-self-heal.h
@@ -102,7 +102,7 @@ afr_selfheal_name (xlator_t *this, uuid_t gfid, const char *name,
void *gfid_req, dict_t *xdata);
int
-afr_selfheal_data (call_frame_t *frame, xlator_t *this, inode_t *inode);
+afr_selfheal_data (call_frame_t *frame, xlator_t *this, fd_t *fd);
int
afr_selfheal_metadata (call_frame_t *frame, xlator_t *this, inode_t *inode);
diff --git a/xlators/cluster/afr/src/afr-transaction.c b/xlators/cluster/afr/src/afr-transaction.c
index a253c0835f5..ec72d46fb36 100644
--- a/xlators/cluster/afr/src/afr-transaction.c
+++ b/xlators/cluster/afr/src/afr-transaction.c
@@ -25,6 +25,18 @@ typedef enum {
AFR_TRANSACTION_POST_OP,
} afr_xattrop_type_t;
+static void
+afr_lock_resume_shared (struct list_head *list);
+
+void
+__afr_transaction_wake_shared (afr_local_t *local, struct list_head *shared);
+
+void
+afr_changelog_post_op (call_frame_t *frame, xlator_t *this);
+
+int
+afr_changelog_post_op_safe (call_frame_t *frame, xlator_t *this);
+
gf_boolean_t
afr_changelog_pre_op_uninherit (call_frame_t *frame, xlator_t *this);
@@ -168,13 +180,14 @@ afr_transaction_fop (call_frame_t *frame, xlator_t *this)
return 0;
}
-
int
afr_transaction_done (call_frame_t *frame, xlator_t *this)
{
- afr_local_t *local = NULL;
- afr_private_t *priv = NULL;
- gf_boolean_t unwind = _gf_false;
+ afr_local_t *local = NULL;
+ afr_private_t *priv = NULL;
+ gf_boolean_t unwind = _gf_false;
+ afr_lock_t *lock = NULL;
+ afr_local_t *lock_local = NULL;
priv = this->private;
local = frame->local;
@@ -188,6 +201,31 @@ afr_transaction_done (call_frame_t *frame, xlator_t *this)
if (unwind)/*It definitely did post-op*/
afr_zero_fill_stat (local);
}
+
+ if (local->transaction.do_eager_unlock) {
+ lock = &local->inode_ctx->lock[local->transaction.type];
+ LOCK (&local->inode->lock);
+ {
+ lock->acquired = _gf_false;
+ lock->release = _gf_false;
+ list_splice_init (&lock->frozen,
+ &lock->waiting);
+ if (list_empty (&lock->waiting))
+ goto unlock;
+ lock_local = list_entry (lock->waiting.next,
+ afr_local_t,
+ transaction.wait_list);
+ list_del_init (&lock_local->transaction.wait_list);
+ list_add (&lock_local->transaction.owner_list,
+ &lock->owners);
+ }
+unlock:
+ UNLOCK (&local->inode->lock);
+ }
+ if (lock_local) {
+ afr_lock (lock_local->transaction.frame,
+ lock_local->transaction.frame->this);
+ }
local->transaction.unwind (frame, this);
AFR_STACK_DESTROY (frame);
@@ -195,6 +233,52 @@ afr_transaction_done (call_frame_t *frame, xlator_t *this)
return 0;
}
+static void
+afr_lock_fail_shared (afr_local_t *local, struct list_head *list)
+{
+ afr_local_t *each = NULL;
+
+ while (!list_empty(list)) {
+ each = list_entry (list->next, afr_local_t,
+ transaction.wait_list);
+ list_del_init(&each->transaction.wait_list);
+ each->op_ret = -1;
+ each->op_errno = local->op_errno;
+ afr_transaction_done (each->transaction.frame,
+ each->transaction.frame->this);
+ }
+}
+
+static void
+afr_handle_lock_acquire_failure (afr_local_t *local, gf_boolean_t locked)
+{
+ struct list_head shared;
+ afr_lock_t *lock = NULL;
+
+ if (!local->transaction.eager_lock_on)
+ goto out;
+
+ lock = &local->inode_ctx->lock[local->transaction.type];
+
+ INIT_LIST_HEAD (&shared);
+ LOCK (&local->inode->lock);
+ {
+ list_splice_init (&lock->waiting, &shared);
+ }
+ UNLOCK (&local->inode->lock);
+
+ afr_lock_fail_shared (local, &shared);
+ local->transaction.do_eager_unlock = _gf_true;
+out:
+ if (locked) {
+ local->internal_lock.lock_cbk = afr_transaction_done;
+ afr_unlock (local->transaction.frame,
+ local->transaction.frame->this);
+ } else {
+ afr_transaction_done (local->transaction.frame,
+ local->transaction.frame->this);
+ }
+}
call_frame_t*
afr_transaction_detach_fop_frame (call_frame_t *frame)
@@ -334,6 +418,7 @@ afr_txn_arbitrate_fop (call_frame_t *frame, xlator_t *this)
afr_local_t *local = NULL;
afr_private_t *priv = NULL;
int pre_op_sources_count = 0;
+ int i = 0;
priv = this->private;
local = frame->local;
@@ -345,11 +430,11 @@ afr_txn_arbitrate_fop (call_frame_t *frame, xlator_t *this)
/* If arbiter is the only source, do not proceed. */
if (pre_op_sources_count < 2 &&
local->transaction.pre_op_sources[ARBITER_BRICK_INDEX]) {
- local->internal_lock.lock_cbk = afr_transaction_done;
local->op_ret = -1;
local->op_errno = ENOTCONN;
- afr_restore_lk_owner (frame);
- afr_unlock (frame, this);
+ for (i = 0; i < priv->child_count; i++)
+ local->transaction.failed_subvols[i] = 1;
+ afr_changelog_post_op (frame, this);/*uninherit should happen*/
} else {
afr_transaction_fop (frame, this);
}
@@ -362,14 +447,16 @@ afr_transaction_perform_fop (call_frame_t *frame, xlator_t *this)
{
afr_local_t *local = NULL;
afr_private_t *priv = NULL;
- fd_t *fd = NULL;
int i = 0;
int ret = 0;
+ int failure_count = 0;
+ struct list_head shared;
+ afr_lock_t *lock = NULL;
local = frame->local;
priv = this->private;
- fd = local->fd;
+ INIT_LIST_HEAD (&shared);
if (local->transaction.type == AFR_DATA_TRANSACTION &&
!local->transaction.inherited) {
ret = afr_write_subvol_set (frame, this);
@@ -394,22 +481,31 @@ afr_transaction_perform_fop (call_frame_t *frame, xlator_t *this)
just now, before OP */
afr_changelog_pre_op_update (frame, this);
- /* The wake up needs to happen independent of
- what type of fop arrives here. If it was
- a write, then it has already inherited the
- lock and changelog. If it was not a write,
- then the presumption of the optimization (of
- optimizing for successive write operations)
- fails.
- */
- if (fd)
- afr_delayed_changelog_wake_up (this, fd);
+ if (!local->transaction.eager_lock_on ||
+ local->transaction.inherited)
+ goto fop;
+ failure_count = AFR_COUNT (local->transaction.failed_subvols,
+ priv->child_count);
+ if (failure_count == priv->child_count) {
+ afr_handle_lock_acquire_failure (local, _gf_true);
+ } else {
+ lock = &local->inode_ctx->lock[local->transaction.type];
+ LOCK (&local->inode->lock);
+ {
+ lock->acquired = _gf_true;
+ __afr_transaction_wake_shared (local, &shared);
+ }
+ UNLOCK (&local->inode->lock);
+ }
+
+fop:
if (priv->arbiter_count == 1) {
afr_txn_arbitrate_fop (frame, this);
} else {
afr_transaction_fop (frame, this);
}
+ afr_lock_resume_shared (&shared);
return 0;
}
@@ -486,30 +582,14 @@ afr_changelog_post_op_done (call_frame_t *frame, xlator_t *this)
}
-afr_inodelk_t*
-afr_get_inodelk (afr_internal_lock_t *int_lock, char *dom)
-{
- afr_inodelk_t *inodelk = NULL;
- int i = 0;
-
- for (i = 0; int_lock->inodelk[i].domain; i++) {
- inodelk = &int_lock->inodelk[i];
- if (strcmp (dom, inodelk->domain) == 0)
- return inodelk;
- }
- return NULL;
-}
-
unsigned char*
afr_locked_nodes_get (afr_transaction_type type, afr_internal_lock_t *int_lock)
{
unsigned char *locked_nodes = NULL;
- afr_inodelk_t *inodelk = NULL;
switch (type) {
case AFR_DATA_TRANSACTION:
case AFR_METADATA_TRANSACTION:
- inodelk = afr_get_inodelk (int_lock, int_lock->domain);
- locked_nodes = inodelk->locked_nodes;
+ locked_nodes = int_lock->locked_nodes;
break;
case AFR_ENTRY_TRANSACTION:
@@ -834,27 +914,19 @@ afr_changelog_pre_op_uninherit (call_frame_t *frame, xlator_t *this)
{
afr_local_t *local = NULL;
afr_private_t *priv = NULL;
- fd_t *fd = NULL;
+ afr_inode_ctx_t *ctx = NULL;
int i = 0;
gf_boolean_t ret = _gf_false;
- afr_fd_ctx_t *fd_ctx = NULL;
int type = 0;
local = frame->local;
priv = this->private;
- fd = local->fd;
+ ctx = local->inode_ctx;
type = afr_index_for_transaction_type (local->transaction.type);
if (type != AFR_DATA_TRANSACTION)
return !local->transaction.dirtied;
- if (!fd)
- return !local->transaction.dirtied;
-
- fd_ctx = afr_fd_ctx_get (fd, this);
- if (!fd_ctx)
- return _gf_false;
-
if (local->transaction.no_uninherit)
return _gf_false;
@@ -868,34 +940,34 @@ afr_changelog_pre_op_uninherit (call_frame_t *frame, xlator_t *this)
if (local->transaction.uninherit_done)
return local->transaction.uninherit_value;
- LOCK(&fd->lock);
+ LOCK(&local->inode->lock);
{
for (i = 0; i < priv->child_count; i++) {
if (local->transaction.pre_op[i] !=
- fd_ctx->pre_op_done[type][i]) {
+ ctx->pre_op_done[type][i]) {
ret = !local->transaction.dirtied;
goto unlock;
}
}
- if (fd_ctx->inherited[type]) {
+ if (ctx->inherited[type]) {
ret = _gf_true;
- fd_ctx->inherited[type]--;
- } else if (fd_ctx->on_disk[type]) {
+ ctx->inherited[type]--;
+ } else if (ctx->on_disk[type]) {
ret = _gf_false;
- fd_ctx->on_disk[type]--;
+ ctx->on_disk[type]--;
} else {
/* ASSERT */
ret = _gf_false;
}
- if (!fd_ctx->inherited[type] && !fd_ctx->on_disk[type]) {
+ if (!ctx->inherited[type] && !ctx->on_disk[type]) {
for (i = 0; i < priv->child_count; i++)
- fd_ctx->pre_op_done[type][i] = 0;
+ ctx->pre_op_done[type][i] = 0;
}
}
unlock:
- UNLOCK(&fd->lock);
+ UNLOCK(&local->inode->lock);
local->transaction.uninherit_done = _gf_true;
local->transaction.uninherit_value = ret;
@@ -909,31 +981,21 @@ afr_changelog_pre_op_inherit (call_frame_t *frame, xlator_t *this)
{
afr_local_t *local = NULL;
afr_private_t *priv = NULL;
- fd_t *fd = NULL;
int i = 0;
gf_boolean_t ret = _gf_false;
- afr_fd_ctx_t *fd_ctx = NULL;
int type = 0;
local = frame->local;
priv = this->private;
- fd = local->fd;
if (local->transaction.type != AFR_DATA_TRANSACTION)
return _gf_false;
type = afr_index_for_transaction_type (local->transaction.type);
- if (!fd)
- return _gf_false;
-
- fd_ctx = afr_fd_ctx_get (fd, this);
- if (!fd_ctx)
- return _gf_false;
-
- LOCK(&fd->lock);
+ LOCK(&local->inode->lock);
{
- if (!fd_ctx->on_disk[type]) {
+ if (!local->inode_ctx->on_disk[type]) {
/* nothing to inherit yet */
ret = _gf_false;
goto unlock;
@@ -941,21 +1003,21 @@ afr_changelog_pre_op_inherit (call_frame_t *frame, xlator_t *this)
for (i = 0; i < priv->child_count; i++) {
if (local->transaction.pre_op[i] !=
- fd_ctx->pre_op_done[type][i]) {
+ local->inode_ctx->pre_op_done[type][i]) {
/* either inherit exactly, or don't */
ret = _gf_false;
goto unlock;
}
}
- fd_ctx->inherited[type]++;
+ local->inode_ctx->inherited[type]++;
ret = _gf_true;
local->transaction.inherited = _gf_true;
}
unlock:
- UNLOCK(&fd->lock);
+ UNLOCK(&local->inode->lock);
return ret;
}
@@ -966,22 +1028,16 @@ afr_changelog_pre_op_update (call_frame_t *frame, xlator_t *this)
{
afr_local_t *local = NULL;
afr_private_t *priv = NULL;
- fd_t *fd = NULL;
- afr_fd_ctx_t *fd_ctx = NULL;
int i = 0;
gf_boolean_t ret = _gf_false;
int type = 0;
local = frame->local;
priv = this->private;
- fd = local->fd;
- if (!fd)
- return _gf_false;
-
- fd_ctx = afr_fd_ctx_get (fd, this);
- if (!fd_ctx)
- return _gf_false;
+ if (local->transaction.type == AFR_ENTRY_TRANSACTION ||
+ local->transaction.type == AFR_ENTRY_RENAME_TRANSACTION)
+ return _gf_false;
if (local->transaction.inherited)
/* was already inherited in afr_changelog_pre_op */
@@ -997,26 +1053,26 @@ afr_changelog_pre_op_update (call_frame_t *frame, xlator_t *this)
ret = _gf_false;
- LOCK(&fd->lock);
+ LOCK(&local->inode->lock);
{
- if (!fd_ctx->on_disk[type]) {
+ if (!local->inode_ctx->on_disk[type]) {
for (i = 0; i < priv->child_count; i++)
- fd_ctx->pre_op_done[type][i] =
+ local->inode_ctx->pre_op_done[type][i] =
(!local->transaction.failed_subvols[i]);
} else {
for (i = 0; i < priv->child_count; i++)
- if (fd_ctx->pre_op_done[type][i] !=
+ if (local->inode_ctx->pre_op_done[type][i] !=
(!local->transaction.failed_subvols[i])) {
local->transaction.no_uninherit = 1;
goto unlock;
}
}
- fd_ctx->on_disk[type]++;
+ local->inode_ctx->on_disk[type]++;
ret = _gf_true;
}
unlock:
- UNLOCK(&fd->lock);
+ UNLOCK(&local->inode->lock);
return ret;
}
@@ -1322,6 +1378,9 @@ afr_changelog_pre_op (call_frame_t *frame, xlator_t *this)
afr_init_optimistic_changelog_for_txn (this, local);
+ if (afr_changelog_pre_op_inherit (frame, this))
+ goto next;
+
/* This condition should not be met with present code, as
* transaction.done will be called if locks are not acquired on even a
* single node.
@@ -1347,9 +1406,6 @@ afr_changelog_pre_op (call_frame_t *frame, xlator_t *this)
goto err;
}
- if (afr_changelog_pre_op_inherit (frame, this))
- goto next;
-
if (call_count < priv->child_count)
pre_nop = _gf_false;
@@ -1406,7 +1462,7 @@ err:
local->op_ret = -1;
local->op_errno = op_errno;
- afr_unlock (frame, this);
+ afr_handle_lock_acquire_failure (local, _gf_true);
if (xdata_req)
dict_unref (xdata_req);
@@ -1416,31 +1472,6 @@ err:
int
-afr_post_blocking_inodelk_cbk (call_frame_t *frame, xlator_t *this)
-{
- afr_internal_lock_t *int_lock = NULL;
- afr_local_t *local = NULL;
-
- local = frame->local;
- int_lock = &local->internal_lock;
-
- if (int_lock->lock_op_ret < 0) {
- gf_msg (this->name, GF_LOG_INFO,
- 0, AFR_MSG_BLOCKING_LKS_FAILED,
- "Blocking inodelks failed.");
- afr_transaction_done (frame, this);
- } else {
-
- gf_msg_debug (this->name, 0,
- "Blocking inodelks done. Proceeding to FOP");
- afr_internal_lock_finish (frame, this);
- }
-
- return 0;
-}
-
-
-int
afr_post_nonblocking_inodelk_cbk (call_frame_t *frame, xlator_t *this)
{
afr_internal_lock_t *int_lock = NULL;
@@ -1453,7 +1484,7 @@ afr_post_nonblocking_inodelk_cbk (call_frame_t *frame, xlator_t *this)
if (int_lock->lock_op_ret < 0) {
gf_msg_debug (this->name, 0,
"Non blocking inodelks failed. Proceeding to blocking");
- int_lock->lock_cbk = afr_post_blocking_inodelk_cbk;
+ int_lock->lock_cbk = afr_internal_lock_finish;
afr_blocking_lock (frame, this);
} else {
@@ -1467,31 +1498,6 @@ afr_post_nonblocking_inodelk_cbk (call_frame_t *frame, xlator_t *this)
int
-afr_post_blocking_entrylk_cbk (call_frame_t *frame, xlator_t *this)
-{
- afr_internal_lock_t *int_lock = NULL;
- afr_local_t *local = NULL;
-
- local = frame->local;
- int_lock = &local->internal_lock;
-
- if (int_lock->lock_op_ret < 0) {
- gf_msg (this->name, GF_LOG_INFO, 0,
- AFR_MSG_BLOCKING_LKS_FAILED,
- "Blocking entrylks failed.");
- afr_transaction_done (frame, this);
- } else {
-
- gf_msg_debug (this->name, 0,
- "Blocking entrylks done. Proceeding to FOP");
- afr_internal_lock_finish (frame, this);
- }
-
- return 0;
-}
-
-
-int
afr_post_nonblocking_entrylk_cbk (call_frame_t *frame, xlator_t *this)
{
afr_internal_lock_t *int_lock = NULL;
@@ -1504,7 +1510,7 @@ afr_post_nonblocking_entrylk_cbk (call_frame_t *frame, xlator_t *this)
if (int_lock->lock_op_ret < 0) {
gf_msg_debug (this->name, 0,
"Non blocking entrylks failed. Proceeding to blocking");
- int_lock->lock_cbk = afr_post_blocking_entrylk_cbk;
+ int_lock->lock_cbk = afr_internal_lock_finish;
afr_blocking_lock (frame, this);
} else {
@@ -1565,29 +1571,28 @@ int
afr_set_transaction_flock (xlator_t *this, afr_local_t *local)
{
afr_internal_lock_t *int_lock = NULL;
- afr_inodelk_t *inodelk = NULL;
afr_private_t *priv = NULL;
int_lock = &local->internal_lock;
- inodelk = afr_get_inodelk (int_lock, int_lock->domain);
priv = this->private;
- if ((priv->arbiter_count || priv->full_lock) &&
+ if ((priv->arbiter_count || local->transaction.eager_lock_on ||
+ priv->full_lock) &&
local->transaction.type == AFR_DATA_TRANSACTION) {
/*Lock entire file to avoid network split brains.*/
- inodelk->flock.l_len = 0;
- inodelk->flock.l_start = 0;
+ int_lock->flock.l_len = 0;
+ int_lock->flock.l_start = 0;
} else {
- inodelk->flock.l_len = local->transaction.len;
- inodelk->flock.l_start = local->transaction.start;
+ int_lock->flock.l_len = local->transaction.len;
+ int_lock->flock.l_start = local->transaction.start;
}
- inodelk->flock.l_type = F_WRLCK;
+ int_lock->flock.l_type = F_WRLCK;
return 0;
}
int
-afr_lock_rec (call_frame_t *frame, xlator_t *this)
+afr_lock (call_frame_t *frame, xlator_t *this)
{
afr_internal_lock_t *int_lock = NULL;
afr_local_t *local = NULL;
@@ -1628,74 +1633,153 @@ afr_lock_rec (call_frame_t *frame, xlator_t *this)
return 0;
}
+static gf_boolean_t
+afr_locals_overlap (afr_local_t *local1, afr_local_t *local2)
+{
+ uint64_t start1 = local1->transaction.start;
+ uint64_t start2 = local2->transaction.start;
+ uint64_t end1 = 0;
+ uint64_t end2 = 0;
+
+ if (local1->transaction.len)
+ end1 = start1 + local1->transaction.len - 1;
+ else
+ end1 = ULLONG_MAX;
+
+ if (local2->transaction.len)
+ end2 = start2 + local2->transaction.len - 1;
+ else
+ end2 = ULLONG_MAX;
-int
-afr_lock (call_frame_t *frame, xlator_t *this)
+ return ((end1 >= start2) && (end2 >= start1));
+}
+
+gf_boolean_t
+afr_has_lock_conflict (afr_local_t *local, gf_boolean_t waitlist_check)
{
- afr_set_lock_number (frame, this);
+ afr_local_t *each = NULL;
+ afr_lock_t *lock = NULL;
- return afr_lock_rec (frame, this);
+ lock = &local->inode_ctx->lock[local->transaction.type];
+ /*
+ * Once full file lock is acquired in eager-lock phase, overlapping
+ * writes do not compete for inode-locks, instead are transferred to the
+ * next writes. Because of this overlapping writes are not ordered.
+ * This can cause inconsistencies in replication.
+ * Example:
+ * Two overlapping writes w1, w2 are sent in parallel on same fd
+ * in two threads t1, t2.
+ * Both threads can execute afr_writev_wind in the following manner.
+ * t1 winds w1 on brick-0
+ * t2 winds w2 on brick-0
+ * t2 winds w2 on brick-1
+ * t1 winds w1 on brick-1
+ *
+ * This check makes sure the locks are not transferred for
+ * overlapping writes.
+ */
+ list_for_each_entry (each, &lock->owners, transaction.owner_list) {
+ if (afr_locals_overlap (each, local)) {
+ return _gf_true;
+ }
+ }
+
+ if (!waitlist_check)
+ return _gf_false;
+ list_for_each_entry (each, &lock->waiting, transaction.wait_list) {
+ if (afr_locals_overlap (each, local)) {
+ return _gf_true;
+ }
+ }
+ return _gf_false;
}
/* }}} */
-
-int
-afr_internal_lock_finish (call_frame_t *frame, xlator_t *this)
+static void
+afr_copy_inodelk_vars (afr_internal_lock_t *dst, afr_internal_lock_t *src,
+ xlator_t *this)
{
- afr_changelog_pre_op (frame, this);
+ afr_private_t *priv = this->private;
- return 0;
+ dst->domain = src->domain;
+ dst->flock.l_len = src->flock.l_len;
+ dst->flock.l_start = src->flock.l_start;
+ dst->flock.l_type = src->flock.l_type;
+ dst->lock_count = src->lock_count;
+ memcpy (dst->locked_nodes, src->locked_nodes,
+ priv->child_count * sizeof (*dst->locked_nodes));
}
-
void
-afr_set_delayed_post_op (call_frame_t *frame, xlator_t *this)
+__afr_transaction_wake_shared (afr_local_t *local, struct list_head *shared)
{
- afr_local_t *local = NULL;
- afr_private_t *priv = NULL;
+ gf_boolean_t conflict = _gf_false;
+ afr_local_t *each = NULL;
+ afr_lock_t *lock = &local->inode_ctx->lock[local->transaction.type];
- /* call this function from any of the related optimizations
- which benefit from delaying post op are enabled, namely:
-
- - changelog piggybacking
- - eager locking
- */
+ while (!conflict) {
+ if (list_empty (&lock->waiting))
+ return;
+ each = list_entry(lock->waiting.next, afr_local_t,
+ transaction.wait_list);
+ if (afr_has_lock_conflict (each, _gf_false)) {
+ conflict = _gf_true;
+ }
+ if (conflict && !list_empty (&lock->owners))
+ return;
+ afr_copy_inodelk_vars (&each->internal_lock,
+ &local->internal_lock,
+ each->transaction.frame->this);
+ list_move_tail (&each->transaction.wait_list, shared);
+ list_add_tail(&each->transaction.owner_list, &lock->owners);
+ }
+}
- priv = this->private;
- if (!priv)
- return;
+static void
+afr_lock_resume_shared (struct list_head *list)
+{
+ afr_local_t *each = NULL;
- if (!priv->post_op_delay_secs)
- return;
+ while (!list_empty(list)) {
+ each = list_entry(list->next, afr_local_t,
+ transaction.wait_list);
+ list_del_init(&each->transaction.wait_list);
+ afr_changelog_pre_op (each->transaction.frame,
+ each->transaction.frame->this);
+ }
+}
- local = frame->local;
- if (!local)
- return;
+int
+afr_internal_lock_finish (call_frame_t *frame, xlator_t *this)
+{
+ afr_local_t *local = frame->local;
+ afr_lock_t *lock = NULL;
- if (!local->transaction.eager_lock_on)
- return;
- if (!local->fd)
- return;
+ local->internal_lock.lock_cbk = NULL;
+ if (!local->transaction.eager_lock_on) {
+ if (local->internal_lock.lock_op_ret < 0) {
+ afr_transaction_done (frame, this);
+ return 0;
+ }
+ afr_changelog_pre_op (frame, this);
+ } else {
+ lock = &local->inode_ctx->lock[local->transaction.type];
+ if (local->internal_lock.lock_op_ret < 0) {
+ afr_handle_lock_acquire_failure (local, _gf_false);
+ } else {
+ lock->event_generation = local->event_generation;
+ afr_changelog_pre_op (frame, this);
+ }
+ }
- if (local->op == GF_FOP_WRITE)
- local->delayed_post_op = _gf_true;
+ return 0;
}
gf_boolean_t
-afr_are_multiple_fds_opened (fd_t *fd, xlator_t *this)
+afr_are_multiple_fds_opened (afr_local_t *local, xlator_t *this)
{
- afr_fd_ctx_t *fd_ctx = NULL;
-
- if (!fd) {
- /* If false is returned, it may keep on taking eager-lock
- * which may lead to starvation, so return true to avoid that.
- */
- gf_msg_callingfn (this->name, GF_LOG_ERROR, EBADF,
- AFR_MSG_INVALID_ARG, "Invalid fd");
- return _gf_true;
- }
/* Lets say mount1 has eager-lock(full-lock) and after the eager-lock
* is taken mount2 opened the same file, it won't be able to
* perform any data operations until mount1 releases eager-lock.
@@ -1703,11 +1787,7 @@ afr_are_multiple_fds_opened (fd_t *fd, xlator_t *this)
* if open-fd-count is > 1
*/
- fd_ctx = afr_fd_ctx_get (fd, this);
- if (!fd_ctx)
- return _gf_true;
-
- if (fd_ctx->open_fd_count > 1)
+ if (local->inode_ctx->open_fd_count > 1)
return _gf_true;
return _gf_false;
@@ -1715,24 +1795,45 @@ afr_are_multiple_fds_opened (fd_t *fd, xlator_t *this)
gf_boolean_t
-is_afr_delayed_changelog_post_op_needed (call_frame_t *frame, xlator_t *this)
+afr_is_delayed_changelog_post_op_needed (call_frame_t *frame, xlator_t *this,
+ int delay)
{
- afr_local_t *local = NULL;
- gf_boolean_t res = _gf_false;
+ afr_local_t *local = NULL;
+ afr_lock_t *lock = NULL;
+ gf_boolean_t res = _gf_false;
local = frame->local;
- if (!local)
+ lock = &local->inode_ctx->lock[local->transaction.type];
+
+ if (!afr_txn_nothing_failed (frame, this)) {
+ lock->release = _gf_true;
goto out;
+ }
- if (!local->delayed_post_op)
+ if (afr_are_multiple_fds_opened (local, this)) {
+ lock->release = _gf_true;
goto out;
+ }
- //Mark pending changelog ASAP
- if (!afr_txn_nothing_failed (frame, this))
+ if (!list_empty (&lock->owners))
+ goto out;
+ else
+ GF_ASSERT (list_empty (&lock->waiting));
+
+ if (lock->release) {
+ goto out;
+ }
+
+ if (!delay) {
goto out;
+ }
- if (local->fd && afr_are_multiple_fds_opened (local->fd, this))
+ if ((local->op != GF_FOP_WRITE) &&
+ (local->op != GF_FOP_FXATTROP)) {
+ /*Only allow writes but shard does [f]xattrops on writes, so
+ * they are fine too*/
goto out;
+ }
res = _gf_true;
out:
@@ -1743,50 +1844,61 @@ out:
void
afr_delayed_changelog_wake_up_cbk (void *data)
{
- fd_t *fd = NULL;
+ afr_lock_t *lock = NULL;
+ afr_local_t *local = data;
+ afr_local_t *timer_local = NULL;
+ struct list_head shared;
- fd = data;
-
- afr_delayed_changelog_wake_up (THIS, fd);
+ INIT_LIST_HEAD (&shared);
+ lock = &local->inode_ctx->lock[local->transaction.type];
+ LOCK (&local->inode->lock);
+ {
+ timer_local = list_entry(lock->post_op.next,
+ afr_local_t,
+ transaction.owner_list);
+ if (list_empty (&lock->owners) && (local == timer_local)) {
+ GF_ASSERT (list_empty (&lock->waiting));
+ /*Last owner*/
+ lock->release = _gf_true;
+ lock->delay_timer = NULL;
+ }
+ }
+ UNLOCK (&local->inode->lock);
+ afr_changelog_post_op_now (local->transaction.frame,
+ local->transaction.frame->this);
}
/* SET operation */
int
-afr_fd_report_unstable_write (xlator_t *this, fd_t *fd)
+afr_fd_report_unstable_write (xlator_t *this, afr_local_t *local)
{
- afr_fd_ctx_t *fdctx = NULL;
-
- fdctx = afr_fd_ctx_get (fd, this);
-
- LOCK(&fd->lock);
+ LOCK(&local->inode->lock);
{
- fdctx->witnessed_unstable_write = _gf_true;
+ local->inode_ctx->witnessed_unstable_write = _gf_true;
}
- UNLOCK(&fd->lock);
+ UNLOCK(&local->inode->lock);
return 0;
}
/* TEST and CLEAR operation */
gf_boolean_t
-afr_fd_has_witnessed_unstable_write (xlator_t *this, fd_t *fd)
+afr_fd_has_witnessed_unstable_write (xlator_t *this, inode_t *inode)
{
- afr_fd_ctx_t *fdctx = NULL;
+ afr_inode_ctx_t *ctx = NULL;
gf_boolean_t witness = _gf_false;
- fdctx = afr_fd_ctx_get (fd, this);
- if (!fdctx)
- return _gf_true;
-
- LOCK(&fd->lock);
+ LOCK(&inode->lock);
{
- if (fdctx->witnessed_unstable_write) {
+ (void)__afr_inode_ctx_get (this, inode, &ctx);
+
+ if (ctx->witnessed_unstable_write) {
witness = _gf_true;
- fdctx->witnessed_unstable_write = _gf_false;
+ ctx->witnessed_unstable_write = _gf_false;
}
}
- UNLOCK (&fd->lock);
+ UNLOCK (&inode->lock);
return witness;
}
@@ -1929,7 +2041,7 @@ afr_changelog_post_op_safe (call_frame_t *frame, xlator_t *this)
mark a flag in the fdctx whenever an unstable write is witnessed.
*/
- if (!afr_fd_has_witnessed_unstable_write (this, local->fd)) {
+ if (!afr_fd_has_witnessed_unstable_write (this, local->inode)) {
afr_changelog_post_op_now (frame, this);
return 0;
}
@@ -1947,87 +2059,64 @@ afr_changelog_post_op_safe (call_frame_t *frame, xlator_t *this)
return 0;
}
-
void
-afr_delayed_changelog_post_op (xlator_t *this, call_frame_t *frame, fd_t *fd,
- call_stub_t *stub)
+afr_changelog_post_op (call_frame_t *frame, xlator_t *this)
{
- afr_fd_ctx_t *fd_ctx = NULL;
- call_frame_t *prev_frame = NULL;
- struct timespec delta = {0, };
- afr_private_t *priv = NULL;
- afr_local_t *local = NULL;
+ struct timespec delta = {0, };
+ afr_private_t *priv = NULL;
+ afr_local_t *local = frame->local;
+ afr_lock_t *lock = NULL;
+ gf_boolean_t post_op = _gf_true;
+ struct list_head shared;
priv = this->private;
-
- fd_ctx = afr_fd_ctx_get (fd, this);
- if (!fd_ctx)
- goto out;
-
delta.tv_sec = priv->post_op_delay_secs;
delta.tv_nsec = 0;
- pthread_mutex_lock (&fd_ctx->delay_lock);
- {
- prev_frame = fd_ctx->delay_frame;
- fd_ctx->delay_frame = NULL;
- if (fd_ctx->delay_timer)
- gf_timer_call_cancel (this->ctx, fd_ctx->delay_timer);
- fd_ctx->delay_timer = NULL;
- if (!frame)
- goto unlock;
- fd_ctx->delay_timer = gf_timer_call_after (this->ctx, delta,
- afr_delayed_changelog_wake_up_cbk,
- fd);
- fd_ctx->delay_frame = frame;
- }
-unlock:
- pthread_mutex_unlock (&fd_ctx->delay_lock);
-
-out:
- if (prev_frame) {
- local = prev_frame->local;
- local->transaction.resume_stub = stub;
- afr_changelog_post_op_now (prev_frame, this);
- } else if (stub) {
- call_resume (stub);
- }
-}
-
-
-void
-afr_changelog_post_op (call_frame_t *frame, xlator_t *this)
-{
- afr_local_t *local = NULL;
-
- local = frame->local;
-
- if (is_afr_delayed_changelog_post_op_needed (frame, this))
- afr_delayed_changelog_post_op (this, frame, local->fd, NULL);
- else
- afr_changelog_post_op_safe (frame, this);
-}
-
+ INIT_LIST_HEAD (&shared);
+ if (!local->transaction.eager_lock_on)
+ goto out;
+ lock = &local->inode_ctx->lock[local->transaction.type];
+ LOCK (&local->inode->lock);
+ {
+ list_del_init (&local->transaction.owner_list);
+ list_add (&local->transaction.owner_list, &lock->post_op);
+ __afr_transaction_wake_shared (local, &shared);
+
+ if (!afr_is_delayed_changelog_post_op_needed (frame, this,
+ delta.tv_sec)) {
+ if (list_empty (&lock->owners))
+ lock->release = _gf_true;
+ goto unlock;
+ }
-/* Wake up the sleeping/delayed post-op, and also register
- a stub to have it resumed after this transaction
- completely finishes.
+ GF_ASSERT (lock->delay_timer == NULL);
+ lock->delay_timer = gf_timer_call_after (this->ctx, delta,
+ afr_delayed_changelog_wake_up_cbk,
+ local);
+ if (!lock->delay_timer) {
+ lock->release = _gf_true;
+ } else {
+ post_op = _gf_false;
+ }
- The @stub gets saved in @local and gets resumed in
- afr_local_cleanup()
- */
-void
-afr_delayed_changelog_wake_resume (xlator_t *this, fd_t *fd, call_stub_t *stub)
-{
- afr_delayed_changelog_post_op (this, NULL, fd, stub);
-}
+ }
+unlock:
+ UNLOCK (&local->inode->lock);
+ if (!list_empty (&shared)) {
+ afr_lock_resume_shared (&shared);
+ }
-void
-afr_delayed_changelog_wake_up (xlator_t *this, fd_t *fd)
-{
- afr_delayed_changelog_post_op (this, NULL, fd, NULL);
+out:
+ if (post_op) {
+ if (!local->transaction.eager_lock_on || lock->release) {
+ afr_changelog_post_op_safe (frame, this);
+ } else {
+ afr_changelog_post_op_now (frame, this);
+ }
+ }
}
int
@@ -2037,13 +2126,6 @@ afr_transaction_resume (call_frame_t *frame, xlator_t *this)
local = frame->local;
- if (local->transaction.eager_lock_on) {
- /* We don't need to retain "local" in the
- fd list anymore, writes to all subvols
- are finished by now */
- afr_remove_eager_lock_stub (local);
- }
-
afr_restore_lk_owner (frame);
afr_handle_symmetric_errors (frame, this);
@@ -2074,114 +2156,149 @@ afr_transaction_fop_failed (call_frame_t *frame, xlator_t *this,
local->transaction.failed_subvols[child_index] = 1;
}
-
-
static gf_boolean_t
-afr_locals_overlap (afr_local_t *local1, afr_local_t *local2)
+__need_previous_lock_unlocked (afr_local_t *local)
{
- uint64_t start1 = local1->transaction.start;
- uint64_t start2 = local2->transaction.start;
- uint64_t end1 = 0;
- uint64_t end2 = 0;
-
- if (local1->transaction.len)
- end1 = start1 + local1->transaction.len - 1;
- else
- end1 = ULLONG_MAX;
+ afr_lock_t *lock = NULL;
- if (local2->transaction.len)
- end2 = start2 + local2->transaction.len - 1;
- else
- end2 = ULLONG_MAX;
+ if (!local->transaction.eager_lock_on)
+ return _gf_true;
- return ((end1 >= start2) && (end2 >= start1));
+ lock = &local->inode_ctx->lock[local->transaction.type];
+ if (!lock->acquired)
+ return _gf_false;
+ if (lock->acquired && lock->event_generation != local->event_generation)
+ return _gf_true;
+ return _gf_false;
}
void
-afr_transaction_eager_lock_init (afr_local_t *local, xlator_t *this)
+__afr_eager_lock_handle (afr_local_t *local, gf_boolean_t *take_lock,
+ gf_boolean_t *do_pre_op, afr_local_t **timer_local)
{
- afr_private_t *priv = NULL;
- afr_fd_ctx_t *fdctx = NULL;
- afr_local_t *each = NULL;
+ afr_lock_t *lock = NULL;
+ afr_local_t *owner_local = NULL;
+ xlator_t *this = local->transaction.frame->this;
- priv = this->private;
-
- if (!local->fd)
- return;
-
- if (local->transaction.type != AFR_DATA_TRANSACTION)
- return;
+ if (local->fd && !afr_are_multiple_fds_opened (local, this)) {
+ local->transaction.eager_lock_on = _gf_true;
+ }
- if (!priv->eager_lock)
- return;
+ lock = &local->inode_ctx->lock[local->transaction.type];
+ if (__need_previous_lock_unlocked (local)) {
+ if (!list_empty (&lock->owners)) {
+ lock->release = _gf_true;
+ } else if (lock->delay_timer) {
+ lock->release = _gf_true;
+ if (gf_timer_call_cancel (this->ctx,
+ lock->delay_timer)) {
+ /* It will be put in frozen list
+ * in the code flow below*/
+ } else {
+ *timer_local = list_entry(lock->post_op.next,
+ afr_local_t,
+ transaction.owner_list);
+ lock->delay_timer = NULL;
+ }
+ }
+ if (!local->transaction.eager_lock_on)
+ goto out;
+ }
- fdctx = afr_fd_ctx_get (local->fd, this);
- if (!fdctx)
- return;
+ if (lock->release) {
+ list_add_tail (&local->transaction.wait_list,
+ &lock->frozen);
+ *take_lock = _gf_false;
+ goto out;
+ }
- if (afr_are_multiple_fds_opened (local->fd, this))
- return;
- /*
- * Once full file lock is acquired in eager-lock phase, overlapping
- * writes do not compete for inode-locks, instead are transferred to the
- * next writes. Because of this overlapping writes are not ordered.
- * This can cause inconsistencies in replication.
- * Example:
- * Two overlapping writes w1, w2 are sent in parallel on same fd
- * in two threads t1, t2.
- * Both threads can execute afr_writev_wind in the following manner.
- * t1 winds w1 on brick-0
- * t2 winds w2 on brick-0
- * t2 winds w2 on brick-1
- * t1 winds w1 on brick-1
- *
- * This check makes sure the locks are not transferred for
- * overlapping writes.
- */
- LOCK (&local->fd->lock);
- {
- list_for_each_entry (each, &fdctx->eager_locked,
- transaction.eager_locked) {
- if (afr_locals_overlap (each, local)) {
- local->transaction.eager_lock_on = _gf_false;
- goto unlock;
- }
+ if (lock->delay_timer) {
+ *take_lock = _gf_false;
+ if (gf_timer_call_cancel (this->ctx,
+ lock->delay_timer)) {
+ list_add_tail (&local->transaction.wait_list,
+ &lock->frozen);
+ } else {
+ *timer_local = list_entry(lock->post_op.next,
+ afr_local_t,
+ transaction.owner_list);
+ afr_copy_inodelk_vars (&local->internal_lock,
+ &(*timer_local)->internal_lock,
+ this);
+ lock->delay_timer = NULL;
+ *do_pre_op = _gf_true;
+ list_add_tail (&local->transaction.owner_list,
+ &lock->owners);
}
+ goto out;
+ }
- local->transaction.eager_lock_on = _gf_true;
- list_add_tail (&local->transaction.eager_locked,
- &fdctx->eager_locked);
+ if (!list_empty (&lock->owners)) {
+ if (!lock->acquired ||
+ afr_has_lock_conflict (local, _gf_true)) {
+ list_add_tail (&local->transaction.wait_list,
+ &lock->waiting);
+ *take_lock = _gf_false;
+ goto out;
+ }
+ owner_local = list_entry (lock->owners.next,
+ afr_local_t,
+ transaction.owner_list);
+ afr_copy_inodelk_vars (&local->internal_lock,
+ &owner_local->internal_lock,
+ this);
+ *take_lock = _gf_false;
+ *do_pre_op = _gf_true;
}
-unlock:
- UNLOCK (&local->fd->lock);
+
+ if (lock->acquired)
+ GF_ASSERT (!(*take_lock));
+ list_add_tail (&local->transaction.owner_list, &lock->owners);
+out:
+ return;
}
void
-afr_transaction_start (call_frame_t *frame, xlator_t *this)
+afr_transaction_start (afr_local_t *local, xlator_t *this)
{
- afr_local_t *local = frame->local;
- fd_t *fd = NULL;
+ afr_private_t *priv = NULL;
+ gf_boolean_t take_lock = _gf_true;
+ gf_boolean_t do_pre_op = _gf_false;
+ afr_local_t *timer_local = NULL;
- afr_transaction_eager_lock_init (local, this);
+ priv = this->private;
- if (local->fd && local->transaction.eager_lock_on)
- afr_set_lk_owner (frame, this, local->fd);
- else
- afr_set_lk_owner (frame, this, frame->root);
+ if (local->transaction.type != AFR_DATA_TRANSACTION &&
+ local->transaction.type != AFR_METADATA_TRANSACTION)
+ goto lock_phase;
- if (!local->transaction.eager_lock_on && local->loc.inode) {
- fd = fd_lookup (local->loc.inode, frame->root->pid);
- if (fd == NULL)
- fd = fd_lookup_anonymous (local->loc.inode,
- GF_ANON_FD_FLAGS);
+ if (!priv->eager_lock)
+ goto lock_phase;
- if (fd) {
- afr_delayed_changelog_wake_up (this, fd);
- fd_unref (fd);
- }
+ LOCK (&local->inode->lock);
+ {
+ __afr_eager_lock_handle (local, &take_lock, &do_pre_op,
+ &timer_local);
}
+ UNLOCK (&local->inode->lock);
+lock_phase:
+ if (!local->transaction.eager_lock_on) {
+ afr_set_lk_owner (local->transaction.frame, this,
+ local->transaction.frame->root);
+ } else {
+ afr_set_lk_owner (local->transaction.frame, this, local->inode);
+ }
+
- afr_lock (frame, this);
+ if (take_lock) {
+ afr_lock (local->transaction.frame, this);
+ } else if (do_pre_op) {
+ afr_changelog_pre_op (local->transaction.frame, this);
+ }
+ /*Always call delayed_changelog_wake_up_cbk after calling pre-op above
+ * so that any inheriting can happen*/
+ if (timer_local)
+ afr_delayed_changelog_wake_up_cbk (timer_local);
}
int
@@ -2194,7 +2311,7 @@ afr_write_txn_refresh_done (call_frame_t *frame, xlator_t *this, int err)
goto fail;
}
- afr_transaction_start (frame, this);
+ afr_transaction_start (local, this);
return 0;
fail:
local->transaction.unwind (frame, this);
@@ -2212,6 +2329,7 @@ afr_transaction (call_frame_t *frame, xlator_t *this, afr_transaction_type type)
local = frame->local;
priv = this->private;
+ local->transaction.frame = frame;
local->transaction.type = type;
@@ -2224,11 +2342,9 @@ afr_transaction (call_frame_t *frame, xlator_t *this, afr_transaction_type type)
if (ret < 0)
goto out;
- if (type == AFR_ENTRY_TRANSACTION ||
- type == AFR_ENTRY_RENAME_TRANSACTION) {
- afr_transaction_start (frame, this);
- ret = 0;
- goto out;
+
+ if (type != AFR_METADATA_TRANSACTION) {
+ goto txn_start;
}
ret = afr_inode_get_readable (frame, local->inode, this,
@@ -2238,10 +2354,13 @@ afr_transaction (call_frame_t *frame, xlator_t *this, afr_transaction_type type)
event_generation)) {
afr_inode_refresh (frame, this, local->inode, local->loc.gfid,
afr_write_txn_refresh_done);
- } else {
- afr_transaction_start (frame, this);
+ ret = 0;
+ goto out;
}
+
+txn_start:
ret = 0;
+ afr_transaction_start (local, this);
out:
return ret;
}
diff --git a/xlators/cluster/afr/src/afr-transaction.h b/xlators/cluster/afr/src/afr-transaction.h
index ddcb1ebe3eb..a27e9a3c0b4 100644
--- a/xlators/cluster/afr/src/afr-transaction.h
+++ b/xlators/cluster/afr/src/afr-transaction.h
@@ -17,12 +17,6 @@ void
afr_transaction_fop_failed (call_frame_t *frame, xlator_t *this,
int child_index);
-int
-afr_lock_server_count (afr_private_t *priv, afr_transaction_type type);
-
-afr_inodelk_t*
-afr_get_inodelk (afr_internal_lock_t *int_lock, char *dom);
-
int32_t
afr_transaction (call_frame_t *frame, xlator_t *this, afr_transaction_type type);
@@ -30,9 +24,6 @@ int
afr_set_pending_dict (afr_private_t *priv, dict_t *xattr, int32_t **pending);
void
-afr_set_delayed_post_op (call_frame_t *frame, xlator_t *this);
-
-void
afr_delayed_changelog_wake_up (xlator_t *this, fd_t *fd);
void
@@ -57,4 +48,8 @@ afr_pick_error_xdata (afr_local_t *local, afr_private_t *priv,
inode_t *inode2, unsigned char *readable2);
int
afr_transaction_resume (call_frame_t *frame, xlator_t *this);
+int
+afr_lock (call_frame_t *frame, xlator_t *this);
+void
+afr_delayed_changelog_wake_up_cbk (void *data);
#endif /* __TRANSACTION_H__ */
diff --git a/xlators/cluster/afr/src/afr.h b/xlators/cluster/afr/src/afr.h
index dcaf2887173..b2f3af136bd 100644
--- a/xlators/cluster/afr/src/afr.h
+++ b/xlators/cluster/afr/src/afr.h
@@ -229,19 +229,12 @@ int
afr_entry_lockee_cmp (const void *l1, const void *l2);
typedef struct {
- char *domain; /* Domain on which inodelk is taken */
- struct gf_flock flock;
- unsigned char *locked_nodes;
- int32_t lock_count;
-} afr_inodelk_t;
-
-typedef struct {
loc_t *lk_loc;
int lockee_count;
afr_entry_lockee_t lockee[AFR_LOCKEE_COUNT_MAX];
- afr_inodelk_t inodelk[AFR_DOM_COUNT_MAX];
+ struct gf_flock flock;
const char *lk_basename;
const char *lower_basename;
const char *higher_basename;
@@ -254,7 +247,6 @@ typedef struct {
int32_t lock_count;
int32_t entrylk_lock_count;
- uint64_t lock_number;
int32_t lk_call_count;
int32_t lk_expected_count;
int32_t lk_attempted_count;
@@ -292,37 +284,9 @@ typedef enum {
} afr_fd_open_status_t;
typedef struct {
- unsigned int *pre_op_done[AFR_NUM_CHANGE_LOGS];
- int inherited[AFR_NUM_CHANGE_LOGS];
- int on_disk[AFR_NUM_CHANGE_LOGS];
afr_fd_open_status_t *opened_on; /* which subvolumes the fd is open on */
-
- unsigned int *lock_piggyback;
- unsigned int *lock_acquired;
-
int flags;
- /* used for delayed-post-op optimization */
- pthread_mutex_t delay_lock;
- gf_timer_t *delay_timer;
- call_frame_t *delay_frame;
-
- /* set if any write on this fd was a non stable write
- (i.e, without O_SYNC or O_DSYNC)
- */
- gf_boolean_t witnessed_unstable_write;
-
- /* @open_fd_count:
- Number of open FDs queried from the server, as queried through
- xdata in FOPs. Currently, used to decide if eager-locking must be
- temporarily disabled.
- */
- uint32_t open_fd_count;
-
-
- /* list of frames currently in progress */
- struct list_head eager_locked;
-
/* the subvolume on which the latest sequence of readdirs (starting
at offset 0) has begun. Till the next readdir request with 0 offset
arrives, we continue to read off this subvol.
@@ -336,6 +300,20 @@ typedef enum {
AFR_FOP_LOCK_QUORUM_FAILED,
} afr_fop_lock_state_t;
+typedef struct _afr_inode_lock_t {
+ unsigned int event_generation;
+ gf_boolean_t release;
+ gf_boolean_t acquired;
+ gf_timer_t *delay_timer;
+ struct list_head owners; /*Transactions that are performing fop*/
+ struct list_head post_op;/*Transactions that are done with the fop
+ *So can not conflict with the fops*/
+ struct list_head waiting;/*Transaction that are waiting for
+ *conflicting transactions to complete*/
+ struct list_head frozen;/*Transactions that need to go as part of
+ * next batch of eager-lock*/
+} afr_lock_t;
+
typedef struct _afr_inode_ctx {
uint64_t read_subvol;
uint64_t write_subvol;
@@ -343,6 +321,23 @@ typedef struct _afr_inode_ctx {
int spb_choice;
gf_timer_t *timer;
gf_boolean_t need_refresh;
+ unsigned int *pre_op_done[AFR_NUM_CHANGE_LOGS];
+ int inherited[AFR_NUM_CHANGE_LOGS];
+ int on_disk[AFR_NUM_CHANGE_LOGS];
+
+ /* set if any write on this fd was a non stable write
+ (i.e, without O_SYNC or O_DSYNC)
+ */
+ gf_boolean_t witnessed_unstable_write;
+
+ /* @open_fd_count:
+ Number of open FDs queried from the server, as queried through
+ xdata in FOPs. Currently, used to decide if eager-locking must be
+ temporarily disabled.
+ */
+ uint32_t open_fd_count;
+ /*Only 2 types of transactions support eager-locks now. DATA/METADATA*/
+ afr_lock_t lock[2];
} afr_inode_ctx_t;
@@ -457,7 +452,6 @@ typedef struct _afr_local {
dict_t *dict;
int optimistic_change_log;
- gf_boolean_t delayed_post_op;
/* Is the current writev() going to perform a stable write?
i.e, is fd->flags or @flags writev param have O_SYNC or
@@ -693,7 +687,7 @@ typedef struct _afr_local {
off_t start, len;
gf_boolean_t eager_lock_on;
- int *eager_lock;
+ gf_boolean_t do_eager_unlock;
char *basename;
char *new_basename;
@@ -707,7 +701,8 @@ typedef struct _afr_local {
of the transaction frame */
call_stub_t *resume_stub;
- struct list_head eager_locked;
+ struct list_head owner_list;
+ struct list_head wait_list;
unsigned char *pre_op;
@@ -768,7 +763,8 @@ typedef struct _afr_local {
*/
afr_changelog_resume_t changelog_resume;
- call_frame_t *main_frame;
+ call_frame_t *main_frame; /*Fop frame*/
+ call_frame_t *frame; /*Transaction frame*/
int (*wind) (call_frame_t *frame, xlator_t *this, int subvol);
@@ -1009,7 +1005,7 @@ afr_cleanup_fd_ctx (xlator_t *this, fd_t *fd);
afr_local_cleanup (frame->local, THIS); \
mem_put (frame->local); \
frame->local = NULL; }; \
- frame->local;})
+ frame->local; })
#define AFR_STACK_RESET(frame) \
do { \
@@ -1096,22 +1092,10 @@ afr_filter_xattrs (dict_t *xattr);
#define AFR_QUORUM_AUTO INT_MAX
int
-afr_fd_report_unstable_write (xlator_t *this, fd_t *fd);
+afr_fd_report_unstable_write (xlator_t *this, afr_local_t *local);
gf_boolean_t
-afr_fd_has_witnessed_unstable_write (xlator_t *this, fd_t *fd);
-
-void
-afr_delayed_changelog_wake_resume (xlator_t *this, fd_t *fd, call_stub_t *stub);
-
-int
-afr_inodelk_init (afr_inodelk_t *lk, char *dom, size_t child_count);
-
-void
-afr_handle_open_fd_count (call_frame_t *frame, xlator_t *this);
-
-void
-afr_remove_eager_lock_stub (afr_local_t *local);
+afr_fd_has_witnessed_unstable_write (xlator_t *this, inode_t *inode);
void
afr_reply_wipe (struct afr_reply *reply);
@@ -1225,5 +1209,4 @@ afr_write_subvol_reset (call_frame_t *frame, xlator_t *this);
int
afr_set_inode_local (xlator_t *this, afr_local_t *local, inode_t *inode);
-
#endif /* __AFR_H__ */
generated by cgit (git 2.34.1) at 2024-04-18 17:19:20 +0000