2 files changed, 88 insertions, 0 deletions
diff --git a/tests/bugs/bug-915554.t b/tests/bugs/bug-915554.t
new file mode 100755
index 00000000000..a811c18f656
--- /dev/null
+++ b/tests/bugs/bug-915554.t
@@ -0,0 +1,75 @@
+#!/bin/bash
+#
+# Bug <915554>
+#
+# This test checks for a condition where a rebalance migrates a file and does
+# not preserve the original file size. This can occur due to hole preservation
+# logic in the file migration code. If a file size is aligned to a disk sector
+# boundary (512b) and the tail portion of the file is zero-filled, the file
+# may end up truncated to the end of the last data region in the file.
+#
+###
+
+. $(dirname $0)/../include.rc
+. $(dirname $0)/../dht.rc
+
+cleanup;
+
+TEST glusterd
+TEST pidof glusterd
+
+BRICK_COUNT=3
+# create, start and mount a two brick DHT volume
+TEST $CLI volume create $V0 $H0:$B0/${V0}0 $H0:$B0/${V0}1 $H0:$B0/${V0}2
+TEST $CLI volume start $V0
+
+TEST glusterfs --attribute-timeout=0 --entry-timeout=0 --gid-timeout=-1 -s $H0 --volfile-id $V0 $M0;
+
+i=1
+# Write some data to a file and extend such that the file is sparse to a sector
+# aligned boundary.
+echo test > $M0/$i
+TEST truncate --size=1m $M0/$i
+
+# cache the original size
+SIZE1=`stat -c %s $M0/$i`
+
+# rename till file gets a linkfile
+
+while [ $i -ne 0 ]
+do
+        test=`mv $M0/$i $M0/$(( $i+1 )) 2>/dev/null`
+        if [ $? -ne 0 ]
+        then
+                echo "rename failed"
+                break
+        fi
+        let i++
+        file_has_linkfile $i
+        has_link=$?
+        if [ $has_link -eq 2 ]
+        then
+                break;
+        fi
+done
+
+# start a rebalance (force option to overide checks) to trigger migration of
+# file
+
+TEST $CLI volume rebalance $V0 start force
+
+# check if rebalance has completed for upto 15 secs
+
+EXPECT_WITHIN 15 "0" rebalance_completed
+
+# validate the file size after the migration
+SIZE2=`stat -c %s $M0/$i`
+
+TEST [ $SIZE1 -eq $SIZE2 ]
+
+TEST rm -f $M0/$i
+TEST umount $M0
+TEST $CLI volume stop $V0
+TEST $CLI volume delete $V0
+
+cleanup;
diff --git a/tests/dht.rc b/tests/dht.rc
index 1c811a63c6e..ee92a47bd62 100644
--- a/tests/dht.rc
+++ b/tests/dht.rc
@@ -70,3 +70,16 @@ function get_hashed_brick()
 
         return $hashed
 }
+
+
+function rebalance_completed()
+{
+       val=1
+       test=`gluster volume rebalance $V0 status |grep localhost|grep -v "in progress" 2>&1`
+       if [ $? -eq 0 ]
+       then
+                val=0
+       fi
+
+       echo $val
+}