diff options
| author | Ravishankar N <ravishankar@redhat.com> | 2016-05-02 18:45:44 +0530 |
|---|---|---|
| committer | Jeff Darcy <jdarcy@redhat.com> | 2016-05-25 11:55:08 -0700 |
| commit | 2f29065ae4715c9c4a9d20c4d15311bebd3ddb0e (patch) | |
| tree | 163497880075bfcc2b97f92be2d2fb86ed95ab51 /xlators/cluster/afr/src/afr.h | |
| parent | f8f16595d8dd8c8a869630bb77b7fd1b42b97e08 (diff) | |
afr: Automagic unsplit-brain by [ctime|mtime|size|majority]
Introduce cluster.favorite-child-policy which when enabled with
[ctime|mtime|size|majority], automatically heals files that are in
split-brian.
The majority policy will not pick a source if there is no majority.
The other three policies pick the first brick with a valid reply and
non-zero ctime/mtime/size as source.
Change-Id: I3c099a0404082213860f74f2c9b4d207cfaedb76
BUG: 1328224
Original-author: Richard Wareing <rwareing@fb.com>
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/14026
Smoke: Gluster Build System <jenkins@build.gluster.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anuradha Talur <atalur@redhat.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Diffstat (limited to 'xlators/cluster/afr/src/afr.h')
| -rw-r--r-- | xlators/cluster/afr/src/afr.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/xlators/cluster/afr/src/afr.h b/xlators/cluster/afr/src/afr.h index 7d270ea94e7..5482dab25b2 100644 --- a/xlators/cluster/afr/src/afr.h +++ b/xlators/cluster/afr/src/afr.h @@ -50,6 +50,16 @@ typedef int (*afr_changelog_resume_t) (call_frame_t *frame, xlator_t *this); #define AFR_INTERSECT(dst,src1,src2,max) ({int __i; for (__i = 0; __i < max; __i++) dst[__i] = src1[__i] && src2[__i];}) #define AFR_CMP(a1,a2,len) ({int __cmp = 0; int __i; for (__i = 0; __i < len; __i++) if (a1[__i] != a2[__i]) { __cmp = 1; break;} __cmp;}) #define AFR_IS_ARBITER_BRICK(priv, index) ((priv->arbiter_count == 1) && (index == ARBITER_BRICK_INDEX)) + +typedef enum { + AFR_FAV_CHILD_NONE, + AFR_FAV_CHILD_BY_SIZE, + AFR_FAV_CHILD_BY_CTIME, + AFR_FAV_CHILD_BY_MTIME, + AFR_FAV_CHILD_BY_MAJORITY, + AFR_FAV_CHILD_POLICY_MAX, +} afr_favorite_child_policy; + typedef struct _afr_private { gf_lock_t lock; /* to guard access to child_count, etc */ unsigned int child_count; /* total number of children */ @@ -94,6 +104,9 @@ typedef struct _afr_private { int favorite_child; /* subvolume to be preferred in resolving split-brain cases */ + afr_favorite_child_policy fav_child_policy;/*Policy to use for automatic + resolution of split-brains.*/ + gf_boolean_t inodelk_trace; gf_boolean_t entrylk_trace; |