changelog: test case for verifying empty changelogs avoided

Test case added to check NO EMPTY changelogs gets
created over changelog rollover period.

Change-Id: I83323644e1a0c4b920a472e1179606a0fd54d1d9
BUG: 1237000
Signed-off-by: Saravanakumar Arumugam <sarumuga@redhat.com>
Reviewed-on: http://review.gluster.org/11460
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Venky Shankar <vshankar@redhat.com>
Tested-by: NetBSD Build System <jenkins@build.gluster.org>

tests/bugs/changelog/bug-1208470.t

@@ -0,0 +1,40 @@
+#!/bin/bash
+
+## Testcase:
+## Avoid creating any EMPTY changelog(over the changelog rollover time)
+
+. $(dirname $0)/../../include.rc
+. $(dirname $0)/../../volume.rc
+. $(dirname $0)/../../changelog.rc
+cleanup;
+
+## override current changelog rollover-time
+## to avoid sleeping for long duration.
+CL_RO_TIME=5
+
+## Start and create a volume
+TEST glusterd;
+TEST pidof glusterd;
+TEST $CLI volume create $V0 $H0:$B0/$V0"1";
+
+## Verify volume is created
+EXPECT "$V0" volinfo_field $V0 'Volume Name';
+EXPECT 'Created' volinfo_field $V0 'Status';
+
+## Start volume and verify
+TEST $CLI volume start $V0;
+EXPECT 'Started' volinfo_field $V0 'Status';
+
+## Set changelog ON
+TEST $CLI volume set $V0 changelog.changelog on;
+
+EXPECT 1 count_changelog_files $B0/${V0}1
+
+## Set changelog rollover time
+TEST $CLI volume set $V0 changelog.rollover-time $CL_RO_TIME;
+
+## Wait for changelog rollover time
+sleep $CL_RO_TIME
+
+## NO additional empty changelogs created
+EXPECT 1 count_changelog_files $B0/${V0}1

tests/changelog.rc

@@ -2,3 +2,8 @@
 function count_htime_files {
     ls -l $B0/$V0"1"/.glusterfs/changelogs/htime/ | grep HTIME | wc -l
 }
+
+function count_changelog_files {
+    # Where $1 is the brick name passed
+    ls -l $1/.glusterfs/changelogs/ | grep CHANGELOG | wc -l
+}