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authorAtin Mukherjee <amukherj@redhat.com>2015-12-21 23:13:43 +0530
committerAtin Mukherjee <amukherj@redhat.com>2016-01-10 22:46:45 -0800
commitc449b7520c6f1ac6ea1bc4119dbbbe9ebb80bf93 (patch)
tree740f47418c5e432c8691db5d15190ccfa035d06c
parent36fcaf275952202ce3f1e621d3b3a34d58054c99 (diff)
glusterd: import/export brickinfo->uuid
Given a two node cluster with node N1 & N2, if a dummy node N3 is peer probed, the probed node N3 goes for importing volumes from the probing node (N1), but it still doesn't have information about the other node (N2) about its membership (since peer update happens post volume updates) and hence fail to update its brick's uuid. Post that even though N2 updates N3 about its membership the brick's uuid was never generated. Now as a consequence when N3 initiates a detach of N2, it checks whether the node to be detached has any bricks configured by its respective uuid which is NULL in this case and hence it goes ahead and removes the peer which ideally it shouldn't have (refer to glusterd_friend_contains_vol_bricks () for the logic) Fix is to export brick's uuid and import it at the probed node instead of resolving it. Change-Id: I2d88c72175347550a45ab12aff0ae248e56baa87 BUG: 1293414 Signed-off-by: Atin Mukherjee <amukherj@redhat.com> Reviewed-on: http://review.gluster.org/13047 Tested-by: Gluster Build System <jenkins@build.gluster.com> Tested-by: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: Gaurav Kumar Garg <ggarg@redhat.com> Reviewed-by: Avra Sengupta <asengupt@redhat.com>
-rwxr-xr-xtests/bugs/glusterd/bug-1293414-import-brickinfo-uuid.t31
-rw-r--r--xlators/mgmt/glusterd/src/glusterd-utils.c20
2 files changed, 48 insertions, 3 deletions
diff --git a/tests/bugs/glusterd/bug-1293414-import-brickinfo-uuid.t b/tests/bugs/glusterd/bug-1293414-import-brickinfo-uuid.t
new file mode 100755
index 00000000000..9f67e4ccfa0
--- /dev/null
+++ b/tests/bugs/glusterd/bug-1293414-import-brickinfo-uuid.t
@@ -0,0 +1,31 @@
+#!/bin/bash
+
+. $(dirname $0)/../../include.rc
+. $(dirname $0)/../../volume.rc
+. $(dirname $0)/../../cluster.rc
+
+cleanup;
+
+TEST launch_cluster 4;
+
+TEST $CLI_1 peer probe $H2;
+EXPECT_WITHIN $PROBE_TIMEOUT 1 peer_count
+TEST $CLI_1 volume create $V0 $H1:$B1/$V0 $H2:$B2/$V0
+TEST $CLI_1 volume start $V0
+
+
+TEST $CLI_1 peer probe $H3;
+EXPECT_WITHIN $PROBE_TIMEOUT 2 peer_count
+
+TEST $CLI_1 peer probe $H4;
+EXPECT_WITHIN $PROBE_TIMEOUT 3 peer_count
+
+# peers hosting bricks can't be detached
+TEST ! $CLI_3 peer detach $H1
+TEST ! $CLI_3 peer detach $H2
+
+
+# peer not hosting bricks should be detachable
+TEST $CLI_3 peer detach $H4
+EXPECT_WITHIN $PROBE_TIMEOUT 2 peer_count
+cleanup;
diff --git a/xlators/mgmt/glusterd/src/glusterd-utils.c b/xlators/mgmt/glusterd/src/glusterd-utils.c
index 2e2607b6d08..f129b1cb04f 100644
--- a/xlators/mgmt/glusterd/src/glusterd-utils.c
+++ b/xlators/mgmt/glusterd/src/glusterd-utils.c
@@ -2547,6 +2547,14 @@ glusterd_add_volume_to_dict (glusterd_volinfo_t *volinfo,
goto out;
memset (key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "%s%d.brick%d.uuid",
+ prefix, count, i);
+ ret = dict_set_dynstr_with_alloc (dict, key,
+ uuid_utoa(brickinfo->uuid));
+ if (ret)
+ goto out;
+
+ memset (key, 0, sizeof (key));
snprintf (key, sizeof (key), "%s%d.brick%d", prefix, count, i);
ret = gd_add_brick_snap_details_to_dict (dict, key, brickinfo);
if (ret)
@@ -3010,6 +3018,7 @@ glusterd_import_new_brick (dict_t *peer_data, int32_t vol_count,
glusterd_brickinfo_t *new_brickinfo = NULL;
char msg[2048] = {0};
xlator_t *this = NULL;
+ char *brick_uuid_str = NULL;
this = THIS;
GF_ASSERT (this);
@@ -3067,9 +3076,14 @@ glusterd_import_new_brick (dict_t *peer_data, int32_t vol_count,
if (ret)
goto out;
- //peerinfo might not be added yet
- (void) glusterd_resolve_brick (new_brickinfo);
- ret = 0;
+ memset (key, 0, sizeof (key));
+ snprintf (key, sizeof (key), "%s%d.brick%d.uuid",
+ prefix, vol_count, brick_count);
+ ret = dict_get_str (peer_data, key, &brick_uuid_str);
+ if (ret)
+ goto out;
+ gf_uuid_parse (brick_uuid_str, new_brickinfo->uuid);
+
*brickinfo = new_brickinfo;
out:
if (msg[0])