cluster/afr: Don't delete gfid-req from lookup request

Problem:
Afr does dict_ref of the xattr_req that comes to it and deletes "gfid-req" key.
Dht uses same dict to send lookup to other subvolumes. So in case of
directories and more than 1 dht subvolumes, second subvolume till the last
subvolume won't get a lookup request with "gfid-req". So gfid reset never
happens on the directories in distributed replicate subvolume for 2nd till last
subvolumes.

Fix:
Make a copy of lookup xattr request.

Also fixed replies_wipe possibly resetting gfid to NULL gfid

BUG: 1312816
Change-Id: Ic16260e5a4664837d069c1dc05b9e96ca05bda88
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/13545
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: Krutika Dhananjay <kdhananj@redhat.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/basic/afr/gfid-heal.t b/tests/basic/afr/gfid-heal.t
new file mode 100644
index 00000000000..e570f3d5951
--- /dev/null
+++ b/tests/basic/afr/gfid-heal.t
@@ -0,0 +1,20 @@
+#!/bin/bash
+#gfid self-heal test on distributed replica. Make sure all the gfids are same
+#and the gfid exists on all the bricks
+
+. $(dirname $0)/../../include.rc
+. $(dirname $0)/../../volume.rc
+cleanup;
+
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume create $V0 replica 2 $H0:$B0/brick{0,1,2,3}
+TEST $CLI volume start $V0
+TEST $GFS --volfile-id=$V0 --volfile-server=$H0 $M0;
+
+TEST mkdir $B0/brick{0,1,2,3}/d
+sleep 2 #to prevent is_fresh_file code path
+TEST stat $M0/d
+gfid_count=$(getfattr -d -m. -e hex $B0/brick{0,1,2,3}/d 2>&1 | grep trusted.gfid | wc -l)
+EXPECT 4 echo $gfid_count
+cleanup;