features/shard: Force cache-refresh when lookup/readdirp/stat detect that xattr value has changed

        Backport of: http://review.gluster.org/12400

Change-Id: Ifa51979bc530e31d36781759ca62bcac1de7af24
BUG: 1274600
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: http://review.gluster.org/12457
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/tests/bugs/shard/bug-1272986.t b/tests/bugs/shard/bug-1272986.t
new file mode 100644
index 00000000000..c041ce49482
--- /dev/null
+++ b/tests/bugs/shard/bug-1272986.t
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+. $(dirname $0)/../../include.rc
+
+cleanup
+
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume create $V0 $H0:$B0/${V0}{0,1}
+TEST $CLI volume set $V0 features.shard on
+TEST $CLI volume set $V0 performance.strict-write-ordering on
+TEST $CLI volume start $V0
+
+# $M0 is where the reads will be done and $M1 is where files will be created,
+# written to, etc.
+TEST glusterfs --volfile-id=$V0 --volfile-server=$H0 $M0
+TEST glusterfs --volfile-id=$V0 --volfile-server=$H0 $M1
+
+# Write some data into a file, such that its size crosses the shard block size.
+TEST dd if=/dev/zero of=$M1/file bs=1M count=5 conv=notrunc
+
+md5sum1_reader=$(md5sum $M0/file | awk '{print $1}')
+
+EXPECT "$md5sum1_reader" echo `md5sum $M1/file | awk '{print $1}'`
+
+# Append some more data into the file.
+TEST `echo "abcdefg" >> $M1/file`
+
+md5sum2_reader=$(md5sum $M0/file | awk '{print $1}')
+
+# Test to see if the reader refreshes its cache correctly as part of the reads
+# triggered through md5sum. If it does, then the md5sum on the reader and writer
+# must match.
+EXPECT "$md5sum2_reader" echo `md5sum $M1/file | awk '{print $1}'`
+
+cleanup