diff options
Diffstat (limited to 'libglusterfs')
| -rw-r--r-- | libglusterfs/src/cluster-syncop.c | 96 | ||||
| -rw-r--r-- | libglusterfs/src/cluster-syncop.h | 7 |
2 files changed, 103 insertions, 0 deletions
diff --git a/libglusterfs/src/cluster-syncop.c b/libglusterfs/src/cluster-syncop.c index b7f4dfe7701..75ba6404d91 100644 --- a/libglusterfs/src/cluster-syncop.c +++ b/libglusterfs/src/cluster-syncop.c @@ -1191,3 +1191,99 @@ cluster_entrylk (xlator_t **subvols, unsigned char *on, int numsubvols, loc_wipe (&loc); return cluster_fop_success_fill (replies, numsubvols, locked_on); } + +int +cluster_tiebreaker_inodelk (xlator_t **subvols, unsigned char *on, + int numsubvols, default_args_cbk_t *replies, + unsigned char *locked_on, call_frame_t *frame, + xlator_t *this, char *dom, inode_t *inode, + off_t off, size_t size) +{ + struct gf_flock flock = {0, }; + int i = 0; + int num_success = 0; + loc_t loc = {0}; + unsigned char *output = NULL; + + flock.l_type = F_WRLCK; + flock.l_start = off; + flock.l_len = size; + + output = alloca(numsubvols); + loc.inode = inode_ref (inode); + gf_uuid_copy (loc.gfid, inode->gfid); + FOP_ONLIST (subvols, on, numsubvols, replies, locked_on, frame, + inodelk, dom, &loc, F_SETLK, &flock, NULL); + + for (i = 0; i < numsubvols; i++) { + if (replies[i].valid && replies[i].op_ret == 0) { + num_success++; + continue; + } + if (replies[i].op_ret == -1 && replies[i].op_errno == EAGAIN) { + cluster_fop_success_fill (replies, numsubvols, + locked_on); + cluster_uninodelk (subvols, locked_on, numsubvols, + replies, output, frame, this, dom, + inode, off, size); + + if (num_success) { + FOP_SEQ (subvols, on, numsubvols, replies, + locked_on, frame, inodelk, dom, &loc, + F_SETLKW, &flock, NULL); + } else { + memset (locked_on, 0, numsubvols); + } + break; + } + } + + loc_wipe (&loc); + return cluster_fop_success_fill (replies, numsubvols, locked_on); +} + +int +cluster_tiebreaker_entrylk (xlator_t **subvols, unsigned char *on, + int numsubvols, default_args_cbk_t *replies, + unsigned char *locked_on, call_frame_t *frame, + xlator_t *this, char *dom, inode_t *inode, + const char *name) +{ + int i = 0; + loc_t loc = {0}; + unsigned char *output = NULL; + int num_success = 0; + + output = alloca(numsubvols); + loc.inode = inode_ref (inode); + gf_uuid_copy (loc.gfid, inode->gfid); + FOP_ONLIST (subvols, on, numsubvols, replies, locked_on, frame, + entrylk, dom, &loc, name, ENTRYLK_LOCK_NB, ENTRYLK_WRLCK, + NULL); + + for (i = 0; i < numsubvols; i++) { + if (replies[i].valid && replies[i].op_ret == 0) { + num_success++; + continue; + } + if (replies[i].op_ret == -1 && replies[i].op_errno == EAGAIN) { + cluster_fop_success_fill (replies, numsubvols, + locked_on); + cluster_unentrylk (subvols, locked_on, numsubvols, + replies, output, frame, this, dom, + inode, name); + if (num_success) { + FOP_SEQ (subvols, on, numsubvols, replies, + locked_on, frame, entrylk, dom, &loc, + name, ENTRYLK_LOCK, ENTRYLK_WRLCK, + NULL); + } else { + memset (locked_on, 0, numsubvols); + } + break; + } + } + + loc_wipe (&loc); + return cluster_fop_success_fill (replies, numsubvols, locked_on); +} diff --git a/libglusterfs/src/cluster-syncop.h b/libglusterfs/src/cluster-syncop.h index ff9387acace..b91a09ea681 100644 --- a/libglusterfs/src/cluster-syncop.h +++ b/libglusterfs/src/cluster-syncop.h @@ -209,4 +209,11 @@ int32_t cluster_xattrop_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, dict_t *dict, dict_t *xdata); + +int +cluster_tiebreaker_inodelk (xlator_t **subvols, unsigned char *on, + int numsubvols, default_args_cbk_t *replies, + unsigned char *locked_on, call_frame_t *frame, + xlator_t *this, char *dom, inode_t *inode, + off_t off, size_t size); #endif /* !_CLUSTER_SYNCOP_H */ |