ec : trusted.ec.version xattr of all root directories of all bricks should be same.

Problem:
After replacing the brick using "replace-brick" command and running "heal
full", the version of the root directory of the newly added brick is not
getting healed. heal starts running on the dentries of the root but does not
run on root directory.

Solution:
Run heal on root directory.

Change-Id: Ifd42a3fb341b049c895817e892e5b484a5aa6f80
BUG: 1243382
Signed-off-by: Ashish Pandey <aspandey@redhat.com>
Reviewed-on: http://review.gluster.org/11676
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: NetBSD Build System <jenkins@build.gluster.org>

3 files changed, 53 insertions, 3 deletions

diff --git a/tests/basic/ec/ec-root-heal.t b/tests/basic/ec/ec-root-heal.t
new file mode 100644
index 00000000000..91e668c4702
--- /dev/null
+++ b/tests/basic/ec/ec-root-heal.t
@@ -0,0 +1,33 @@
+#!/bin/bash
+
+. $(dirname $0)/../../include.rc
+. $(dirname $0)/../../volume.rc
+
+cleanup
+function num_entries {
+        ls -l $1 | wc -l
+}
+
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume create $V0 disperse 6 redundancy 2 $H0:$B0/${V0}{0..5}
+TEST $CLI volume start $V0
+TEST glusterfs --entry-timeout=0 --attribute-timeout=0 -s $H0 --volfile-id $V0 $M0
+EXPECT_WITHIN $CHILD_UP_TIMEOUT "6" ec_child_up_count $V0 0
+touch $M0/{1..10}
+TEST $CLI volume replace-brick $V0 $H0:$B0/${V0}5 $H0:$B0/${V0}6 commit force
+EXPECT_WITHIN $PROCESS_UP_TIMEOUT "[0-9][0-9]*" get_shd_process_pid
+EXPECT_WITHIN $CHILD_UP_TIMEOUT "6" ec_child_up_count_shd $V0 0
+
+# active heal
+TEST $CLI volume heal $V0 full
+#ls -l gives "Total" line so number of lines will be 1 more
+EXPECT_WITHIN $HEAL_TIMEOUT "^11$" num_entries $B0/${V0}6
+ec_version=$(get_hex_xattr trusted.ec.version $B0/${V0}0)
+EXPECT "$ec_version" get_hex_xattr trusted.ec.version $B0/${V0}1
+EXPECT "$ec_version" get_hex_xattr trusted.ec.version $B0/${V0}2
+EXPECT "$ec_version" get_hex_xattr trusted.ec.version $B0/${V0}3
+EXPECT "$ec_version" get_hex_xattr trusted.ec.version $B0/${V0}4
+EXPECT "$ec_version" get_hex_xattr trusted.ec.version $B0/${V0}6
+
+cleanup;
diff --git a/tests/volume.rc b/tests/volume.rc
index a100bde55ae..11ef9939d4d 100644
--- a/tests/volume.rc
+++ b/tests/volume.rc
@@ -121,7 +121,7 @@ function ec_get_info {
         local vol=$1
         local dist_id=$2
         local key=$3
-        local fpath=$(generate_mount_statedump $vol)
+        local fpath=$4
         local value=$(sed -n "/^\[cluster\/disperse\.$vol-disperse-$dist_id\]/,/^\[/{s/^$key=\(.*\)/\1/p;}" $fpath | head -1)
         rm -f $fpath
         echo "$value"
@@ -131,14 +131,28 @@ function ec_child_up_status {
         local vol=$1
         local dist_id=$2
         local brick_id=$(($3 + 1))
-        local mask=$(ec_get_info $vol $dist_id "childs_up_mask")
+        local mask=$(ec_get_info $vol $dist_id "childs_up_mask" $(generate_mount_statedump $vol))
         echo "${mask: -$brick_id:1}"
 }
 
 function ec_child_up_count {
         local vol=$1
         local dist_id=$2
-        ec_get_info $vol $dist_id "childs_up"
+        ec_get_info $vol $dist_id "childs_up" $(generate_mount_statedump $vol)
+}
+
+function ec_child_up_status_shd {
+        local vol=$1
+        local dist_id=$2
+        local brick_id=$(($3 + 1))
+        local mask=$(ec_get_info $vol $dist_id "childs_up_mask" $(generate_shd_statedump $vol))
+        echo "${mask: -$brick_id:1}"
+}
+
+function ec_child_up_count_shd {
+        local vol=$1
+        local dist_id=$2
+        ec_get_info $vol $dist_id "childs_up" $(generate_shd_statedump $vol)
 }
 
 function get_shd_process_pid {
diff --git a/xlators/cluster/ec/src/ec-heald.c b/xlators/cluster/ec/src/ec-heald.c
index 75f58487264..4498d2e8db2 100644
--- a/xlators/cluster/ec/src/ec-heald.c
+++ b/xlators/cluster/ec/src/ec-heald.c
@@ -379,12 +379,14 @@ ec_shd_full_healer (void *data)
 {
         struct subvol_healer *healer = NULL;
         xlator_t *this = NULL;
+        loc_t rootloc = {0};
 
         int run = 0;
 
         healer = data;
         THIS = this = healer->this;
 
+        rootloc.inode = this->itable->root;
         for (;;) {
                 pthread_mutex_lock (&healer->mutex);
                 {
@@ -404,6 +406,7 @@ ec_shd_full_healer (void *data)
                         "starting full sweep on subvol %s",
                         ec_subvol_name (this, healer->subvol));
 
+                ec_shd_selfheal (healer, healer->subvol, &rootloc);
                 ec_shd_full_sweep (healer, this->itable->root);
 
                 gf_msg (this->name, GF_LOG_INFO, 0,