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-brick-ops.c b/xlators/mgmt/glusterd/src/glusterd-brick-ops.c
index 5ab23f2d9..f15ec7b18 100644
--- a/xlators/mgmt/glusterd/src/glusterd-brick-ops.c
+++ b/xlators/mgmt/glusterd/src/glusterd-brick-ops.c
@@ -995,6 +995,7 @@ glusterd_op_perform_add_bricks (glusterd_volinfo_t *volinfo, int32_t count,
         gf_boolean_t                  restart_needed = 0;
         char                          msg[1024] __attribute__((unused)) = {0, };
         int                           caps           = 0;
+        int                           brickid        = 0;
 
         GF_ASSERT (volinfo);
 
@@ -1022,11 +1023,17 @@ glusterd_op_perform_add_bricks (glusterd_volinfo_t *volinfo, int32_t count,
                                 "type is set %d, need to change it", type);
         }
 
+        brickid = glusterd_get_next_available_brickid (volinfo);
+        if (brickid < 0)
+                goto out;
         while ( i <= count) {
                 ret = glusterd_brickinfo_new_from_brick (brick, &brickinfo);
                 if (ret)
                         goto out;
 
+                GLUSTERD_ASSIGN_BRICKID_TO_BRICKINFO (brickinfo, volinfo,
+                                                      brickid++);
+
                 ret = glusterd_resolve_brick (brickinfo);
                 if (ret)
                         goto out;