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authorPavan Sondur <pavan@gluster.com>2010-10-05 04:48:27 +0000
committerVijay Bellur <vijay@dev.gluster.com>2010-10-05 03:43:10 -0700
commitf62ff8a8df7ab7c0c551b650f9bd2f1a87b8dc71 (patch)
treec2efc82e784eabe228cc3de0c5b10c57eb56d76e /xlators/features/locks/src/posix.c
parent79342c436fb994e6a41e3c7b69c962af37e8946a (diff)
features/locks: cluster/afr: Misc fixes for lock recovery.
Signed-off-by: Pavan Vilas Sondur <pavan@gluster.com> Signed-off-by: Vijay Bellur <vijay@dev.gluster.com> BUG: 865 (Add locks recovery support in GlusterFS) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=865
Diffstat (limited to 'xlators/features/locks/src/posix.c')
-rw-r--r--xlators/features/locks/src/posix.c163
1 files changed, 131 insertions, 32 deletions
diff --git a/xlators/features/locks/src/posix.c b/xlators/features/locks/src/posix.c
index 9b2001b7a53..36c399c115c 100644
--- a/xlators/features/locks/src/posix.c
+++ b/xlators/features/locks/src/posix.c
@@ -55,6 +55,60 @@ struct _truncate_ops {
enum {TRUNCATE, FTRUNCATE} op;
};
+static pl_fdctx_t *
+pl_new_fdctx ()
+{
+ pl_fdctx_t *fdctx = NULL;
+
+ fdctx = GF_CALLOC (1, sizeof (*fdctx),
+ gf_locks_mt_pl_fdctx_t);
+ if (!fdctx)
+ return NULL;
+
+ INIT_LIST_HEAD (&fdctx->locks_list);
+
+ return fdctx;
+}
+
+static pl_fdctx_t *
+pl_get_fdctx (xlator_t *this, fd_t *fd)
+{
+ int ret = 0;
+ uint64_t tmp = 0;
+
+ ret = fd_ctx_get (fd, this, &tmp);
+ if (ret) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "Could not get fdctx");
+ goto out;
+ }
+
+ return ((pl_fdctx_t *) (long) tmp);
+
+out:
+ return NULL;
+
+}
+
+static int
+pl_set_fdctx (xlator_t *this, fd_t *fd,
+ pl_fdctx_t *fdctx)
+{
+ int ret = 0;
+
+ ret = fd_ctx_set (fd, this,
+ (uint64_t) (unsigned long) (fdctx));
+
+ if (ret) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "Could not set fdctx");
+ goto out;
+ }
+
+out:
+ return ret;
+
+}
int
pl_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
@@ -313,16 +367,34 @@ pl_opendir_cbk (call_frame_t *frame,
int32_t op_errno,
fd_t *fd)
{
- int dummy = 1;
+ pl_fdctx_t *fdctx = NULL;
int ret = -1;
if (op_ret < 0)
goto unwind;
- ret = fd_ctx_set (fd, this, dummy);
- if (ret != 0)
- gf_log (this->name, GF_LOG_ERROR,
- "setting context for fd=%p in locks failed.", fd);
+ fdctx = pl_get_fdctx (this, fd);
+ if (!fdctx) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "fdctx not present");
+ fdctx = pl_new_fdctx ();
+ if (!fdctx) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Out of memory");
+ op_errno = ENOMEM;
+ op_ret = -1;
+ goto unwind;
+ }
+
+ ret = pl_set_fdctx (this, fd, fdctx);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "could not set fdctx");
+ op_ret = -1;
+ op_errno = ENOMEM;
+ goto unwind;
+ }
+ }
unwind:
STACK_UNWIND_STRICT (opendir,
@@ -408,16 +480,34 @@ int
pl_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno, fd_t *fd)
{
- int dummy = 1;
+ pl_fdctx_t *fdctx = NULL;
int ret = -1;
if (op_ret < 0)
goto unwind;
- ret = fd_ctx_set (fd, this, dummy);
- if (ret != 0)
- gf_log (this->name, GF_LOG_ERROR,
- "setting context for fd=%p in locks failed.", fd);
+ fdctx = pl_get_fdctx (this, fd);
+ if (!fdctx) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "fdctx not present");
+ fdctx = pl_new_fdctx ();
+ if (!fdctx) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Out of memory");
+ op_errno = ENOMEM;
+ op_ret = -1;
+ goto unwind;
+ }
+
+ ret = pl_set_fdctx (this, fd, fdctx);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "could not set fdctx");
+ op_ret = -1;
+ op_errno = ENOMEM;
+ goto unwind;
+ }
+ }
unwind:
STACK_UNWIND_STRICT (open, frame, op_ret, op_errno, fd);
@@ -445,16 +535,34 @@ pl_create_cbk (call_frame_t *frame, void *cookie,
fd_t *fd, inode_t *inode, struct iatt *buf,
struct iatt *preparent, struct iatt *postparent)
{
- int dummy = 1;
+ pl_fdctx_t *fdctx = NULL;
int ret = -1;
if (op_ret < 0)
goto unwind;
- ret = fd_ctx_set (fd, this, dummy);
- if (ret != 0)
- gf_log (this->name, GF_LOG_ERROR,
- "setting context for fd=%p in locks failed.", fd);
+ fdctx = pl_get_fdctx (this, fd);
+ if (!fdctx) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "fdctx not present");
+ fdctx = pl_new_fdctx ();
+ if (!fdctx) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "Out of memory");
+ op_errno = ENOMEM;
+ op_ret = -1;
+ goto unwind;
+ }
+
+ ret = pl_set_fdctx (this, fd, fdctx);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR,
+ "could not set fdctx");
+ op_ret = -1;
+ op_errno = ENOMEM;
+ goto unwind;
+ }
+ }
unwind:
STACK_UNWIND_STRICT (create, frame, op_ret, op_errno, fd, inode, buf,
@@ -776,15 +884,6 @@ __dup_locks_to_fdctx (pl_inode_t *pl_inode, fd_t *fd,
posix_lock_t *duplock = NULL;
int ret = 0;
- fdctx = GF_CALLOC (1, sizeof (*fdctx),
- gf_locks_mt_pl_fdctx_t);
- if (!fdctx) {
- ret = -1;
- goto out;
- }
-
- INIT_LIST_HEAD (&fdctx->locks_list);
-
list_for_each_entry (l, &pl_inode->ext_list, list) {
if ((l->fd_num == fd_to_fdnum(fd))) {
duplock = lock_dup (l);
@@ -799,7 +898,6 @@ __dup_locks_to_fdctx (pl_inode_t *pl_inode, fd_t *fd,
}
}
-out:
return ret;
}
@@ -813,10 +911,6 @@ __copy_locks_to_fdctx (pl_inode_t *pl_inode, fd_t *fd,
if (ret)
goto out;
- ret = fd_ctx_set (fd, THIS, (uint64_t) (unsigned long)&fdctx);
- if (ret)
- gf_log (THIS->name, GF_LOG_DEBUG,
- "Failed to set fdctx");
out:
return ret;
@@ -842,7 +936,7 @@ __get_next_fdctx_lock (pl_fdctx_t *fdctx)
goto out;
}
- lock = list_entry (&fdctx->locks_list, typeof (*lock),
+ lock = list_entry (fdctx->locks_list.next, typeof (*lock),
list);
GF_ASSERT (lock);
@@ -869,7 +963,11 @@ __set_next_lock_fd (pl_fdctx_t *fdctx, posix_lock_t *reqlock)
goto out;
}
- reqlock->user_flock = lock->user_flock;
+ reqlock->user_flock = lock->user_flock;
+ reqlock->fl_start = lock->fl_start;
+ reqlock->fl_type = lock->fl_type;
+ reqlock->fl_end = lock->fl_end;
+ reqlock->owner = lock->owner;
out:
if (lock)
@@ -899,7 +997,8 @@ pl_getlk_fd (xlator_t *this, pl_inode_t *pl_inode,
ret = fd_ctx_get (fd, this, &tmp);
fdctx = (pl_fdctx_t *) tmp;
- if (ret) {
+
+ if (list_empty (&fdctx->locks_list)) {
gf_log (this->name, GF_LOG_TRACE,
"no fdctx -> copying all locks on fd");