From 01ef1c8c269ad4f7d66c4bc7e334df5db90f1cae Mon Sep 17 00:00:00 2001
From: Li Wei <liwei@whamcloud.com>
Date: Fri, 18 May 2012 11:09:55 +0800
Subject: [PATCH] LU-1415 tests: Add ZFS support to replay_barrier()

This patch makes sure that ZFS pool states changed by replay_barrier()
calls are restored upon subsequent failovers.

This was originally developed by Mikhail Pershin under ORI-156.  See
http://review.whamcloud.com/1490.

Change-Id: Ie8d26bc8a6d6103be3c504e0af80e8499096df58
Whamcloud-bug-id: ORI-156
Signed-off-by: Li Wei <liwei@whamcloud.com>
Reviewed-on: http://review.whamcloud.com/2981
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Mike Pershin <tappro@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
---
 lustre/tests/replay-single.sh  | 13 +++++++++++
 lustre/tests/test-framework.sh | 50 +++++++++++++++++++++++++++++++-----------
 2 files changed, 50 insertions(+), 13 deletions(-)

diff --git a/lustre/tests/replay-single.sh b/lustre/tests/replay-single.sh
index a062321..66dabdd 100755
--- a/lustre/tests/replay-single.sh
+++ b/lustre/tests/replay-single.sh
@@ -61,6 +61,19 @@ test_0b() {
 }
 run_test 0b "ensure object created after recover exists. (3284)"
 
+test_0c() {
+	replay_barrier $SINGLEMDS
+	mcreate $DIR/$tfile
+	umount $MOUNT
+	facet_failover $SINGLEMDS
+	zconf_mount `hostname` $MOUNT || error "mount fails"
+	client_up || error "post-failover df failed"
+	# file shouldn't exist if replay-barrier works as expected
+	rm $DIR/$tfile && return 1
+	return 0
+}
+run_test 0c "check replay-barrier"
+
 test_0d() {
     replay_barrier $SINGLEMDS
     umount $MOUNT
diff --git a/lustre/tests/test-framework.sh b/lustre/tests/test-framework.sh
index a7c660a..a081522 100644
--- a/lustre/tests/test-framework.sh
+++ b/lustre/tests/test-framework.sh
@@ -912,6 +912,28 @@ start() {
     return $RC
 }
 
+refresh_disk() {
+	local facet=$1
+	local fstype=$(facet_fstype $facet)
+	local _dev
+	local dev
+	local poolname
+
+	if [ "${fstype}" == "zfs" ]; then
+		_dev=$(facet_active $facet)_dev
+		dev=${!_dev} # expand _dev to its value, e.g. ${mds1_dev}
+		poolname="${dev%%/*}" # poolname is string before "/"
+
+		if [ "${poolname}" == "" ]; then
+			echo "invalid dataset name: $dev"
+			return
+		fi
+		do_facet $facet "cp /etc/zfs/zpool.cache /tmp/zpool.cache.back"
+		do_facet $facet "$ZPOOL export ${poolname}"
+		do_facet $facet "$ZPOOL import -f -c /tmp/zpool.cache.back ${poolname}"
+	fi
+}
+
 stop() {
     local running
     local facet=$1
@@ -1276,12 +1298,13 @@ remount_facet() {
 }
 
 reboot_facet() {
-    local facet=$1
-    if [ "$FAILURE_MODE" = HARD ]; then
-        reboot_node $(facet_active_host $facet)
-    else
-        sleep 10
-    fi
+	local facet=$1
+	if [ "$FAILURE_MODE" = HARD ]; then
+		reboot_node $(facet_active_host $facet)
+	else
+		refresh_disk ${facet}
+		sleep 10
+	fi
 }
 
 boot_node() {
@@ -1921,13 +1944,14 @@ fail_nodf() {
 }
 
 fail_abort() {
-    local facet=$1
-    stop $facet
-    change_active $facet
-    wait_for_facet $facet
-    mount_facet $facet -o abort_recovery
-    clients_up || echo "first df failed: $?"
-    clients_up || error "post-failover df: $?"
+	local facet=$1
+	stop $facet
+	refresh_disk ${facet}
+	change_active $facet
+	wait_for_facet $facet
+	mount_facet $facet -o abort_recovery
+	clients_up || echo "first df failed: $?"
+	clients_up || error "post-failover df: $?"
 }
 
 do_lmc() {
-- 
1.8.3.1