glusterd: persistent client xlator/ afr changelog names

-Add a unique brick-id field to glusterd_brickinfo_t
-Persist the id to the brickinfo file
-Use the brick-id as the client xlator name during vol create, add-brick and
 replace-brick operations.
-For older volumes,generate the id in-memory during glusterd restore but defer
 writing it to the brickinfo file until the next volume set operation.
-send and receive the brick-ids during peer probe.

Feature page:
www.gluster.org/community/documentation/index.php/Features/persistent-AFR-changelog-xattributes

Related patch:
http://review.gluster.org/#/c/7122

Change-Id: Ib7f1570004e33f4144476410eec2b84df4e41448
BUG: 1066778
Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Reviewed-on: http://review.gluster.org/7155
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Reviewed-by: Kaushal M <kaushal@redhat.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.h b/xlators/mgmt/glusterd/src/glusterd-utils.h
index cd22b29605a..aebf5fcef05 100644
--- a/xlators/mgmt/glusterd/src/glusterd-utils.h
+++ b/xlators/mgmt/glusterd/src/glusterd-utils.h
@@ -29,6 +29,10 @@
 #include "protocol-common.h"
 
 #define GLUSTERD_SOCK_DIR "/var/run"
+#define GLUSTERD_ASSIGN_BRICKID_TO_BRICKINFO(brickinfo, volinfo, brickid) do {\
+        sprintf (brickinfo->brick_id, "%s-client-%d",\
+                 volinfo->volname, brickid);\
+} while (0)
 
 struct glusterd_lock_ {
         uuid_t  owner;
@@ -124,6 +128,9 @@ int32_t
 glusterd_service_stop(const char *service, char *pidfile, int sig,
                       gf_boolean_t force_kill);
 
+int
+glusterd_get_next_available_brickid (glusterd_volinfo_t *volinfo);
+
 int32_t
 glusterd_resolve_brick (glusterd_brickinfo_t *brickinfo);