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authorPranith Kumar K <pranithk@gluster.com>2011-09-02 08:50:48 +0530
committerAnand Avati <avati@gluster.com>2011-09-08 20:33:55 -0700
commit550148f3bb3505335909cde9e937c2362a1e67e3 (patch)
treec84f99aef6ab39f2d8c3fad8a6ae11e90fdd8014 /xlators/cluster/afr/src/afr-dir-read.c
parent4d2afaae2f3c42b710acf8c7ebdb4b50d502b813 (diff)
cluster/afr: Make data selfheal trigger to be configurable.
By default, lookup triggers data self-heal but that is not the preferred way of operating replicated volumes. We would like the data self heals to be triggered in open instead. Number of back-ground self-heals allowed is 16 and lookups block until self-heal is completed. We want to prevent blocking in fops. We can not make lookups independent of self-heal frames because when there are gfid conflicts the decision of which file is correct is determined in self-heal phase. So in afr, lookup self-heal is going to guarantee name space consistency and open/fd fops will take responsibility for data consistency, these are non blocking. The user needs to set the option cluster.data-self-heal "open" for this behavior. Change-Id: If9463cdb9ebac114708558ec13bbca0270acd659 BUG: 3503 Reviewed-on: http://review.gluster.com/334 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Anand Avati <avati@gluster.com>
Diffstat (limited to 'xlators/cluster/afr/src/afr-dir-read.c')
-rw-r--r--xlators/cluster/afr/src/afr-dir-read.c24
1 files changed, 9 insertions, 15 deletions
diff --git a/xlators/cluster/afr/src/afr-dir-read.c b/xlators/cluster/afr/src/afr-dir-read.c
index d323e6d5f..57f0a03fa 100644
--- a/xlators/cluster/afr/src/afr-dir-read.c
+++ b/xlators/cluster/afr/src/afr-dir-read.c
@@ -106,15 +106,17 @@ afr_examine_dir_readdir_cbk (call_frame_t *frame, void *cookie,
afr_self_heal_t * sh = NULL;
gf_dirent_t * entry = NULL;
gf_dirent_t * tmp = NULL;
+ char *reason = NULL;
int child_index = 0;
uint32_t entry_cksum = 0;
int call_count = 0;
off_t last_offset = 0;
- char sh_type_str[256] = {0,};
+ inode_t *inode = NULL;
priv = this->private;
local = frame->local;
sh = &local->self_heal;
+ inode = local->fd->inode;
child_index = (long) cookie;
@@ -162,23 +164,15 @@ out:
priv->child_count,
local->child_up)) {
- sh->need_entry_self_heal = _gf_true;
+ sh->do_entry_self_heal = _gf_true;
sh->forced_merge = _gf_true;
- afr_self_heal_type_str_get(&local->self_heal,
- sh_type_str,
- sizeof(sh_type_str));
- gf_log (this->name, GF_LOG_INFO,
- "%s self-heal triggered. path: %s, "
- "reason: checksums of directory differ,"
- " forced merge option set",
- sh_type_str, local->loc.path);
-
- afr_launch_self_heal (frame, this, local->fd->inode,
- _gf_false, local->fd->inode->ia_type,
- NULL, afr_examine_dir_sh_unwind);
+ reason = "checksums of directory differ";
+ afr_launch_self_heal (frame, this, inode, _gf_false,
+ inode->ia_type, reason, NULL,
+ afr_examine_dir_sh_unwind);
} else {
- afr_set_opendir_done (this, local->fd->inode);
+ afr_set_opendir_done (this, inode);
AFR_STACK_UNWIND (opendir, frame, local->op_ret,
local->op_errno, local->fd);