diff options
| author | Pranith Kumar K <pranithk@gluster.com> | 2011-09-02 08:50:48 +0530 |
|---|---|---|
| committer | Anand Avati <avati@gluster.com> | 2011-09-08 20:33:55 -0700 |
| commit | 550148f3bb3505335909cde9e937c2362a1e67e3 (patch) | |
| tree | c84f99aef6ab39f2d8c3fad8a6ae11e90fdd8014 /xlators/cluster/afr/src/afr.h | |
| parent | 4d2afaae2f3c42b710acf8c7ebdb4b50d502b813 (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.h')
| -rw-r--r-- | xlators/cluster/afr/src/afr.h | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/xlators/cluster/afr/src/afr.h b/xlators/cluster/afr/src/afr.h index bd0a08842b2..b9a11c486fd 100644 --- a/xlators/cluster/afr/src/afr.h +++ b/xlators/cluster/afr/src/afr.h @@ -92,7 +92,7 @@ typedef struct _afr_private { char **pending_key; - gf_boolean_t data_self_heal; /* on/off */ + char *data_self_heal; /* on/off/open */ char * data_self_heal_algorithm; /* name of algorithm */ unsigned int data_self_heal_window_size; /* max number of pipelined read/writes */ @@ -140,11 +140,11 @@ typedef struct { /* External interface: These are variables (some optional) that are set by whoever has triggered self-heal */ - gf_boolean_t need_data_self_heal; - gf_boolean_t need_metadata_self_heal; - gf_boolean_t need_entry_self_heal; - gf_boolean_t need_gfid_self_heal; - gf_boolean_t need_missing_entry_self_heal; + gf_boolean_t do_data_self_heal; + gf_boolean_t do_metadata_self_heal; + gf_boolean_t do_entry_self_heal; + gf_boolean_t do_gfid_self_heal; + gf_boolean_t do_missing_entry_self_heal; gf_boolean_t forced_merge; /* Is this a self-heal triggered to forcibly merge the directories? */ @@ -979,7 +979,7 @@ afr_inode_rm_stale_children (xlator_t *this, inode_t *inode, int32_t read_child, int32_t *stale_children); void afr_launch_self_heal (call_frame_t *frame, xlator_t *this, inode_t *inode, - gf_boolean_t is_background, ia_type_t ia_type, + gf_boolean_t background, ia_type_t ia_type, char *reason, void (*gfid_sh_success_cbk) (call_frame_t *sh_frame, xlator_t *this), int (*unwind) (call_frame_t *frame, xlator_t *this, @@ -991,6 +991,14 @@ int afr_open_fd_fix (call_frame_t *frame, xlator_t *this, gf_boolean_t pause_fop); int afr_set_elem_count_get (unsigned char *elems, int child_count); + afr_fd_ctx_t * afr_fd_ctx_get (fd_t *fd, xlator_t *this); + +gf_boolean_t +afr_open_only_data_self_heal (char *data_self_heal); + +gf_boolean_t +afr_data_self_heal_enabled (char *data_self_heal); + #endif /* __AFR_H__ */ |