[v2,2/2] fstest: btrfs/198: test for alien devices

Commit Message

Anand Jain Oct. 22, 2019, 9:24 a.m. UTC

Test if btrfs.ko sucessfully identifies and reports the missing device,
if the missed device contians no btrfs magic string.

Signed-off-by: Anand Jain <[e-mail]>
---
v2: Comments added to list kernel patch required to pass the test case
    Fix copy and paste error in the comment

 tests/btrfs/198     | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/btrfs/198.out | 25 +++++++++++++++++
 tests/btrfs/group   |  1 +
 3 files changed, 105 insertions(+)
 create mode 100755 tests/btrfs/198
 create mode 100644 tests/btrfs/198.out

Patch

diff --git a/tests/btrfs/198 b/tests/btrfs/198
new file mode 100755
index 000000000000..c4c651b310c8
--- /dev/null
+++ b/tests/btrfs/198
@@ -0,0 +1,79 @@ 
+#! /bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright (c) 2019 Oracle.  All Rights Reserved.
+#
+# FS QA Test 198
+#
+# Test stale and alien non-btrfs device in the fs devices list.
+#  Bug fixed in:
+#    btrfs: remove identified alien device in open_fs_devices
+#
+seq=`basename $0`
+seqres=$RESULT_DIR/$seq
+echo "QA output created by $seq"
+
+here=`pwd`
+tmp=/tmp/$$
+status=1	# failure is the default!
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+_cleanup()
+{
+	cd /
+	rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/filter.btrfs
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+# Modify as appropriate.
+_supported_fs generic
+_supported_os Linux
+_require_command "$WIPEFS_PROG" wipefs
+_require_scratch
+_require_scratch_dev_pool 4
+
+workout()
+{
+	raid=$1
+	device_nr=$2
+
+	echo $raid
+	_scratch_dev_pool_get $device_nr
+
+	_scratch_pool_mkfs "-d$raid -m$raid" >> $seqres.full 2>&1 || \
+							_fail "mkfs failed"
+
+	# Make device_1 a free btrfs device for the raid created above by
+	# clearing its superblock
+
+	# don't test with the first device as auto fs check (_check_scratch_fs)
+	# picks the first device
+	device_1=$(echo $SCRATCH_DEV_POOL | awk '{print $2}')
+	$WIPEFS_PROG -a $device_1 >> $seqres.full 2>&1
+
+	device_2=$(echo $SCRATCH_DEV_POOL | awk '{print $1}')
+	_mount -o degraded $device_2 $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
+
+	_scratch_unmount
+	_scratch_dev_pool_put
+}
+
+workout "raid1" "2"
+workout "raid5" "3"
+workout "raid6" "4"
+workout "raid10" "4"
+
+# success, all done
+status=0
+exit
diff --git a/tests/btrfs/198.out b/tests/btrfs/198.out
new file mode 100644
index 000000000000..af904a39efd6
--- /dev/null
+++ b/tests/btrfs/198.out
@@ -0,0 +1,25 @@ 
+QA output created by 198
+raid1
+Label: none  uuid: <UUID>
+	Total devices <NUM> FS bytes used <SIZE>
+	devid <DEVID> size <SIZE> used <SIZE> path SCRATCH_DEV
+	*** Some devices missing
+
+raid5
+Label: none  uuid: <UUID>
+	Total devices <NUM> FS bytes used <SIZE>
+	devid <DEVID> size <SIZE> used <SIZE> path SCRATCH_DEV
+	*** Some devices missing
+
+raid6
+Label: none  uuid: <UUID>
+	Total devices <NUM> FS bytes used <SIZE>
+	devid <DEVID> size <SIZE> used <SIZE> path SCRATCH_DEV
+	*** Some devices missing
+
+raid10
+Label: none  uuid: <UUID>
+	Total devices <NUM> FS bytes used <SIZE>
+	devid <DEVID> size <SIZE> used <SIZE> path SCRATCH_DEV
+	*** Some devices missing
+
diff --git a/tests/btrfs/group b/tests/btrfs/group
index 208720efba61..94961044f1fe 100644
--- a/tests/btrfs/group
+++ b/tests/btrfs/group
@@ -200,3 +200,4 @@ 
 195 auto volume
 196 auto metadata log volume
 197 auto quick volume
+198 auto quick volume