tests: Fix spurious failures in ta-write-on-bad-brick.t

Problem:
afr_child_up_status_meta works only when LOOKUP on $M0 is successful.
There are cases where quorum is not met and LOOKUP fails on $M0 which
leads to failures similar to:
grep: /mnt/glusterfs/0/.meta/graphs/active/patchy-replicate-0/private: Transport endpoint is not connected
This was happening once in a while based on attribute-timeout and
md-cache not serving the lookup.

Fix:
Find child-up status based on statedump instead. Also changed mount
options to include --entry-timeout=0 and --attribute-timeout=0

updates bz#1193929
Change-Id: Ic0de72c3006d7399a5feb3e4d10d4748949b2ab3
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>

1 files changed, 21 insertions, 1 deletions

diff --git a/tests/thin-arbiter.rc b/tests/thin-arbiter.rc
index 72202eeb53f..29edeb1222b 100644
--- a/tests/thin-arbiter.rc
+++ b/tests/thin-arbiter.rc
@@ -173,7 +173,7 @@ function ta_start_mount_process()
 {
         mkdir -p $1
         identifier=$(echo $1 | tr / .)
-        if glusterfs  -p $B0/${identifier}.pid --volfile=$B0/mount.vol $1
+        if glusterfs --entry-timeout=0 --attribute-timeout=0 -p $B0/${identifier}.pid --volfile=$B0/mount.vol $1
         then
                 cat $B0/$identifier.pid
         else
@@ -182,6 +182,13 @@ function ta_start_mount_process()
         fi
 }
 
+function ta_get_mount_pid()
+{
+    local mount_path=$1
+    identifier=$(echo $mount_path | tr / .)
+    cat $B0/${identifier}.pid
+}
+
 function ta_create_mount_volfile()
 {
         local b0=$B0/$1
@@ -607,3 +614,16 @@ function ta_start_shd_process()
                 return 1
         fi
 }
+
+function ta_mount_child_up_status()
+{
+        local mount_path=$1
+        #brick_id is (brick-num in volume info - 1)
+        local vol=$2
+        local brick_id=$3
+        local pid=$(ta_get_mount_pid $mount_path)
+        local fpath=$(generate_statedump $pid)
+        up=$(grep -a -B1 trusted.afr.$vol-client-$brick_id $fpath | head -1 | cut -f2 -d'=')
+        rm -f $fpath
+        echo "$up"
+}