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authorKrishnan Parthasarathi <kp@gluster.com>2012-02-21 16:28:13 +0530
committerAnand Avati <avati@redhat.com>2013-01-23 09:17:00 -0800
commit1ab086d8630687985fb412f4093a53d3e3e9aca1 (patch)
treeb69575ac19b190081cfaa92270fcb53ffab5a3c7 /xlators/cluster/afr/src/afr-dir-write.c
parent91ac9f97417790f439702c0297bca953ece597c8 (diff)
afr: Modified book-keeping structures for entrylks
* There are upto 3 entry lockees that may be needed to perform entrylk'ing in posix dir-write operations. * For eg, rmdir ("/a/b") needs to acquire locks on two entities, - entrylk ("/a", "b") - entrylk ("/a/b", null) * Changed existing entrylk/rename/selfheal (entrylk) transactions to use the new book-keeping structures * Fixed few issues in afr_trace_entry_lk{in,out} functions. Tracing is now aware of the new entry lockee structure. Implementation notes: * Changed 'cookie' sent in stack_wind to encode lockee_entity_no and subvol_no. cookie is a non-negative integer such that 0 <= cookie < replica_count, When more than one lock is being acquired across the subvolumes, cookie % replica_count gives the subvol_no cookie / replica_count gives the lockee_entity_no. Change-Id: Idbf41803387a7d59a0f7fcb1453d91cea74da153 BUG: 765564 Signed-off-by: Krishnan Parthasarathi <kp@gluster.com> Reviewed-on: http://review.gluster.org/2828 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@redhat.com>
Diffstat (limited to 'xlators/cluster/afr/src/afr-dir-write.c')
-rw-r--r--xlators/cluster/afr/src/afr-dir-write.c209
1 files changed, 166 insertions, 43 deletions
diff --git a/xlators/cluster/afr/src/afr-dir-write.c b/xlators/cluster/afr/src/afr-dir-write.c
index d86b08b..a988ea2 100644
--- a/xlators/cluster/afr/src/afr-dir-write.c
+++ b/xlators/cluster/afr/src/afr-dir-write.c
@@ -418,11 +418,12 @@ afr_create (call_frame_t *frame, xlator_t *this,
loc_t *loc, int32_t flags, mode_t mode,
mode_t umask, fd_t *fd, dict_t *params)
{
- afr_private_t *priv = NULL;
- afr_local_t *local = NULL;
- call_frame_t *transaction_frame = NULL;
- int ret = -1;
- int op_errno = 0;
+ afr_private_t *priv = NULL;
+ afr_local_t *local = NULL;
+ afr_internal_lock_t *int_lock = NULL;
+ call_frame_t *transaction_frame = NULL;
+ int ret = -1;
+ int op_errno = 0;
VALIDATE_OR_GOTO (frame, out);
VALIDATE_OR_GOTO (this, out);
@@ -473,7 +474,17 @@ afr_create (call_frame_t *frame, xlator_t *this,
local->transaction.main_frame = frame;
local->transaction.basename = AFR_BASENAME (loc->path);
+ int_lock = &local->internal_lock;
+ int_lock->lockee_count = 0;
+ ret = afr_init_entry_lockee (&int_lock->lockee[0], local,
+ &local->transaction.parent_loc,
+ local->transaction.basename,
+ priv->child_count);
+ if (ret)
+ goto out;
+
+ int_lock->lockee_count++;
ret = afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION);
if (ret < 0) {
op_errno = -ret;
@@ -612,11 +623,12 @@ int
afr_mknod (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode,
dev_t dev, mode_t umask, dict_t *params)
{
- afr_private_t * priv = NULL;
- afr_local_t * local = NULL;
- call_frame_t * transaction_frame = NULL;
- int ret = -1;
- int op_errno = 0;
+ afr_private_t *priv = NULL;
+ afr_local_t *local = NULL;
+ afr_internal_lock_t *int_lock = NULL;
+ call_frame_t *transaction_frame = NULL;
+ int ret = -1;
+ int op_errno = 0;
VALIDATE_OR_GOTO (frame, out);
VALIDATE_OR_GOTO (this, out);
@@ -666,7 +678,17 @@ afr_mknod (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode,
local->transaction.main_frame = frame;
local->transaction.basename = AFR_BASENAME (loc->path);
+ int_lock = &local->internal_lock;
+
+ int_lock->lockee_count = 0;
+ ret = afr_init_entry_lockee (&int_lock->lockee[0], local,
+ &local->transaction.parent_loc,
+ local->transaction.basename,
+ priv->child_count);
+ if (ret)
+ goto out;
+ int_lock->lockee_count++;
ret = afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION);
if (ret < 0) {
op_errno = -ret;
@@ -802,16 +824,16 @@ afr_mkdir_done (call_frame_t *frame, xlator_t *this)
return 0;
}
-
int
afr_mkdir (call_frame_t *frame, xlator_t *this,
loc_t *loc, mode_t mode, mode_t umask, dict_t *params)
{
- afr_private_t * priv = NULL;
- afr_local_t * local = NULL;
- call_frame_t * transaction_frame = NULL;
- int ret = -1;
- int op_errno = 0;
+ afr_private_t *priv = NULL;
+ afr_local_t *local = NULL;
+ afr_internal_lock_t *int_lock = NULL;
+ call_frame_t *transaction_frame = NULL;
+ int ret = -1;
+ int op_errno = 0;
VALIDATE_OR_GOTO (frame, out);
VALIDATE_OR_GOTO (this, out);
@@ -859,7 +881,17 @@ afr_mkdir (call_frame_t *frame, xlator_t *this,
local->transaction.main_frame = frame;
local->transaction.basename = AFR_BASENAME (loc->path);
+ int_lock = &local->internal_lock;
+
+ int_lock->lockee_count = 0;
+ ret = afr_init_entry_lockee (&int_lock->lockee[0], local,
+ &local->transaction.parent_loc,
+ local->transaction.basename,
+ priv->child_count);
+ if (ret)
+ goto out;
+ int_lock->lockee_count++;
ret = afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION);
if (ret < 0) {
op_errno = -ret;
@@ -966,7 +998,8 @@ afr_link_wind (call_frame_t *frame, xlator_t *this)
for (i = 0; i < priv->child_count; i++) {
if (local->transaction.pre_op[i]) {
- STACK_WIND_COOKIE (frame, afr_link_wind_cbk, (void *) (long) i,
+ STACK_WIND_COOKIE (frame, afr_link_wind_cbk,
+ (void *) (long) i,
priv->children[i],
priv->children[i]->fops->link,
&local->loc,
@@ -998,11 +1031,12 @@ int
afr_link (call_frame_t *frame, xlator_t *this,
loc_t *oldloc, loc_t *newloc, dict_t *xdata)
{
- afr_private_t * priv = NULL;
- afr_local_t * local = NULL;
- call_frame_t * transaction_frame = NULL;
- int ret = -1;
- int op_errno = 0;
+ afr_private_t *priv = NULL;
+ afr_local_t *local = NULL;
+ afr_internal_lock_t *int_lock = NULL;
+ call_frame_t *transaction_frame = NULL;
+ int ret = -1;
+ int op_errno = 0;
VALIDATE_OR_GOTO (frame, out);
VALIDATE_OR_GOTO (this, out);
@@ -1048,13 +1082,22 @@ afr_link (call_frame_t *frame, xlator_t *this,
local->transaction.main_frame = frame;
local->transaction.basename = AFR_BASENAME (newloc->path);
+ int_lock = &local->internal_lock;
+ int_lock->lockee_count = 0;
+ ret = afr_init_entry_lockee (&int_lock->lockee[0], local,
+ &local->transaction.parent_loc,
+ local->transaction.basename,
+ priv->child_count);
+ if (ret)
+ goto out;
+
+ int_lock->lockee_count++;
ret = afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION);
if (ret < 0) {
op_errno = -ret;
goto out;
}
-
ret = 0;
out:
if (ret < 0) {
@@ -1190,11 +1233,12 @@ int
afr_symlink (call_frame_t *frame, xlator_t *this,
const char *linkpath, loc_t *loc, mode_t umask, dict_t *params)
{
- afr_private_t * priv = NULL;
- afr_local_t * local = NULL;
- call_frame_t * transaction_frame = NULL;
- int ret = -1;
- int op_errno = 0;
+ afr_private_t *priv = NULL;
+ afr_local_t *local = NULL;
+ afr_internal_lock_t *int_lock = NULL;
+ call_frame_t *transaction_frame = NULL;
+ int ret = -1;
+ int op_errno = 0;
VALIDATE_OR_GOTO (frame, out);
VALIDATE_OR_GOTO (this, out);
@@ -1242,7 +1286,17 @@ afr_symlink (call_frame_t *frame, xlator_t *this,
local->transaction.main_frame = frame;
local->transaction.basename = AFR_BASENAME (loc->path);
+ int_lock = &local->internal_lock;
+ int_lock->lockee_count = 0;
+ ret = afr_init_entry_lockee (&int_lock->lockee[0], local,
+ &local->transaction.parent_loc,
+ local->transaction.basename,
+ priv->child_count);
+ if (ret)
+ goto out;
+
+ int_lock->lockee_count++;
ret = afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION);
if (ret < 0) {
op_errno = -ret;
@@ -1391,11 +1445,13 @@ int
afr_rename (call_frame_t *frame, xlator_t *this,
loc_t *oldloc, loc_t *newloc, dict_t *xdata)
{
- afr_private_t * priv = NULL;
- afr_local_t * local = NULL;
- call_frame_t * transaction_frame = NULL;
- int ret = -1;
- int op_errno = 0;
+ afr_private_t *priv = NULL;
+ afr_local_t *local = NULL;
+ afr_internal_lock_t *int_lock = NULL;
+ call_frame_t *transaction_frame = NULL;
+ int ret = -1;
+ int op_errno = 0;
+ int nlockee = 0;
VALIDATE_OR_GOTO (frame, out);
VALIDATE_OR_GOTO (this, out);
@@ -1439,6 +1495,38 @@ afr_rename (call_frame_t *frame, xlator_t *this,
local->transaction.main_frame = frame;
local->transaction.basename = AFR_BASENAME (oldloc->path);
local->transaction.new_basename = AFR_BASENAME (newloc->path);
+ int_lock = &local->internal_lock;
+
+ int_lock->lockee_count = nlockee = 0;
+ ret = afr_init_entry_lockee (&int_lock->lockee[nlockee], local,
+ &local->transaction.new_parent_loc,
+ local->transaction.new_basename,
+ priv->child_count);
+ if (ret)
+ goto out;
+
+ nlockee++;
+ ret = afr_init_entry_lockee (&int_lock->lockee[nlockee], local,
+ &local->transaction.parent_loc,
+ local->transaction.basename,
+ priv->child_count);
+ if (ret)
+ goto out;
+
+ nlockee++;
+ if (local->newloc.inode && IA_ISDIR (local->newloc.inode->ia_type)) {
+ ret = afr_init_entry_lockee (&int_lock->lockee[nlockee], local,
+ &local->newloc,
+ NULL,
+ priv->child_count);
+ if (ret)
+ goto out;
+
+ nlockee++;
+ }
+ qsort (int_lock->lockee, nlockee, sizeof (*int_lock->lockee),
+ afr_entry_lockee_cmp);
+ int_lock->lockee_count = nlockee;
ret = afr_transaction (transaction_frame, this, AFR_ENTRY_RENAME_TRANSACTION);
if (ret < 0) {
@@ -1578,11 +1666,12 @@ int32_t
afr_unlink (call_frame_t *frame, xlator_t *this,
loc_t *loc, int xflag, dict_t *xdata)
{
- afr_private_t * priv = NULL;
- afr_local_t * local = NULL;
- call_frame_t * transaction_frame = NULL;
- int ret = -1;
- int op_errno = 0;
+ afr_private_t *priv = NULL;
+ afr_local_t *local = NULL;
+ afr_internal_lock_t *int_lock = NULL;
+ call_frame_t *transaction_frame = NULL;
+ int ret = -1;
+ int op_errno = 0;
VALIDATE_OR_GOTO (frame, out);
VALIDATE_OR_GOTO (this, out);
@@ -1621,7 +1710,17 @@ afr_unlink (call_frame_t *frame, xlator_t *this,
local->transaction.main_frame = frame;
local->transaction.basename = AFR_BASENAME (loc->path);
+ int_lock = &local->internal_lock;
+ int_lock->lockee_count = 0;
+ ret = afr_init_entry_lockee (&int_lock->lockee[0], local,
+ &local->transaction.parent_loc,
+ local->transaction.basename,
+ priv->child_count);
+ if (ret)
+ goto out;
+
+ int_lock->lockee_count++;
ret = afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION);
if (ret < 0) {
op_errno = -ret;
@@ -1768,11 +1867,13 @@ int
afr_rmdir (call_frame_t *frame, xlator_t *this,
loc_t *loc, int flags, dict_t *xdata)
{
- afr_private_t * priv = NULL;
- afr_local_t * local = NULL;
- call_frame_t * transaction_frame = NULL;
- int ret = -1;
- int op_errno = 0;
+ afr_private_t *priv = NULL;
+ afr_local_t *local = NULL;
+ afr_internal_lock_t *int_lock = NULL;
+ call_frame_t *transaction_frame = NULL;
+ int ret = -1;
+ int op_errno = 0;
+ int nlockee = 0;
VALIDATE_OR_GOTO (frame, out);
VALIDATE_OR_GOTO (this, out);
@@ -1809,6 +1910,28 @@ afr_rmdir (call_frame_t *frame, xlator_t *this,
local->transaction.main_frame = frame;
local->transaction.basename = AFR_BASENAME (loc->path);
+ int_lock = &local->internal_lock;
+
+ int_lock->lockee_count = nlockee = 0;
+ ret = afr_init_entry_lockee (&int_lock->lockee[nlockee], local,
+ &local->transaction.parent_loc,
+ local->transaction.basename,
+ priv->child_count);
+ if (ret)
+ goto out;
+
+ nlockee++;
+ ret = afr_init_entry_lockee (&int_lock->lockee[nlockee], local,
+ &local->loc,
+ NULL,
+ priv->child_count);
+ if (ret)
+ goto out;
+
+ nlockee++;
+ qsort (int_lock->lockee, nlockee, sizeof (*int_lock->lockee),
+ afr_entry_lockee_cmp);
+ int_lock->lockee_count = nlockee;
ret = afr_transaction (transaction_frame, this, AFR_ENTRY_TRANSACTION);
if (ret < 0) {