[PATCH] btrfs/125 197 198: cleanup using SCRATCH_DEV_NAME

[Anand Jain <anand.jain@oracle.com>]

Use SCRATCH_DEV_NAME[n] to provide the device path for each device from
the scratch device pool. Also, in btrfs/197, remove common/filter since
it calls common/filter.btrfs.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
---
There are other test cases that potentially could use SCRATCH_DEV_NAME,
but for now, only 3 of those are being fixed.

 tests/btrfs/125 |  6 +++---
 tests/btrfs/197 | 13 +++++--------
 tests/btrfs/198 | 12 +++++-------
 3 files changed, 13 insertions(+), 18 deletions(-)

diff --git a/tests/btrfs/125 b/tests/btrfs/125
index d957c13911b4..f742d14f858c 100755
--- a/tests/btrfs/125
+++ b/tests/btrfs/125
@@ -45,9 +45,9 @@ _require_btrfs_raid_type raid5
 
 _scratch_dev_pool_get 3
 
-dev1=`echo $SCRATCH_DEV_POOL | $AWK_PROG '{print $1}'`
-dev2=`echo $SCRATCH_DEV_POOL | $AWK_PROG '{print $2}'`
-dev3=`echo $SCRATCH_DEV_POOL | $AWK_PROG '{print $3}'`
+dev1=${SCRATCH_DEV_NAME[0]}
+dev2=${SCRATCH_DEV_NAME[1]}
+dev3=${SCRATCH_DEV_NAME[2]}
 
 echo dev1=$dev1 >> $seqres.full
 echo dev2=$dev2 >> $seqres.full
diff --git a/tests/btrfs/197 b/tests/btrfs/197
index 9ec4e9f052ba..196110cbdad2 100755
--- a/tests/btrfs/197
+++ b/tests/btrfs/197
@@ -22,7 +22,6 @@ _cleanup()
 }
 
 # Import common functions.
-. ./common/filter
 . ./common/filter.btrfs
 
 # real QA test starts here
@@ -55,24 +54,22 @@ workout()
 	_scratch_pool_mkfs "-d$raid -m$raid" >> $seqres.full 2>&1 || \
 							_fail "mkfs failed"
 
-	# Make device_1 an alien btrfs device for the raid created above by
+	# Make device # 2 an alien btrfs device for the raid created above by
 	# adding it to the $TEST_DIR/$seq.mnt
 
 	# don't test with the first device as auto fs check (_check_scratch_fs)
 	# picks the first device
-	device_1=$(echo $SCRATCH_DEV_POOL | $AWK_PROG '{print $2}')
-	$BTRFS_UTIL_PROG device add -f "$device_1" "$TEST_DIR/$seq.mnt" >> \
+	$BTRFS_UTIL_PROG device add -f "${SCRATCH_DEV_NAME[1]}" "$TEST_DIR/$seq.mnt" >> \
 		$seqres.full
 
-	device_2=$(echo $SCRATCH_DEV_POOL | $AWK_PROG '{print $1}')
-	_mount -o degraded $device_2 $SCRATCH_MNT
+	_mount -o degraded ${SCRATCH_DEV_NAME[0]} $SCRATCH_MNT
 	# Check if missing device is reported as in the .out
 	$BTRFS_UTIL_PROG filesystem show -m $SCRATCH_MNT | \
 		_filter_btrfs_filesystem_show > $tmp.output 2>&1
 	cat $tmp.output >> $seqres.full
-	grep -q "$device_1" $tmp.output && _fail "found stale device"
+	grep -q "${SCRATCH_DEV_NAME[1]}" $tmp.output && _fail "found stale device"
 
-	$BTRFS_UTIL_PROG device remove "$device_1" "$TEST_DIR/$seq.mnt"
+	$BTRFS_UTIL_PROG device remove "${SCRATCH_DEV_NAME[1]}" "$TEST_DIR/$seq.mnt"
 	$UMOUNT_PROG $TEST_DIR/$seq.mnt
 	_scratch_unmount
 	_spare_dev_put
diff --git a/tests/btrfs/198 b/tests/btrfs/198
index c5a8f39217d3..ad43b4d1b59b 100755
--- a/tests/btrfs/198
+++ b/tests/btrfs/198
@@ -40,21 +40,19 @@ workout()
 	_scratch_pool_mkfs "-d$raid -m$raid" >> $seqres.full 2>&1 || \
 							_fail "mkfs failed"
 
-	# Make device_1 a free btrfs device for the raid created above by
-	# clearing its superblock
+	# Make ${SCRATCH_DEV_NAME[1]} a free btrfs device for the raid created
+	# above by clearing its superblock
 
 	# don't test with the first device as auto fs check (_check_scratch_fs)
 	# picks the first device
-	device_1=$(echo $SCRATCH_DEV_POOL | $AWK_PROG '{print $2}')
-	$WIPEFS_PROG -a $device_1 >> $seqres.full 2>&1
+	$WIPEFS_PROG -a ${SCRATCH_DEV_NAME[1]} >> $seqres.full 2>&1
 
-	device_2=$(echo $SCRATCH_DEV_POOL | $AWK_PROG '{print $1}')
-	_mount -o degraded $device_2 $SCRATCH_MNT
+	_mount -o degraded ${SCRATCH_DEV_NAME[0]} $SCRATCH_MNT
 	# Check if missing device is reported as in the 196.out
 	$BTRFS_UTIL_PROG filesystem show -m $SCRATCH_MNT | \
 		_filter_btrfs_filesystem_show > $tmp.output 2>&1
 	cat $tmp.output >> $seqres.full
-	grep -q "$device_1" $tmp.output && _fail "found stale device"
+	grep -q "${SCRATCH_DEV_NAME[1]}" $tmp.output && _fail "found stale device"
 
 	_scratch_unmount
 	_scratch_dev_pool_put
-- 
2.39.3