btrfs: test device delete with EIO on src dev

This test case tests if the device delete works with
the failed (EIO) source device. EIO errors are achieved
usign the DM device.

This test would need following btrfs-progs and btrfs
kernel patch
   btrfs-progs: device delete to accept devid
   Btrfs: device delete by devid

However when btrfs-progs patch is not found this test will
not run, and when kernel patch is not found btrfs-progs
will fail gracefully and thus the test script.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

diff --git a/common/rc b/common/rc
index 1094de4b22eab7be1636f95321bd358d0ca96147..3e97060721e6b68eb5677a9fa2e256302deee2a7 100644 (file)
--- a/common/rc
+++ b/common/rc
@@ -2767,6 +2767,13 @@ _require_meta_uuid()
        umount $SCRATCH_MNT
 }
 
+_require_btrfs_dev_del_by_devid()
+{
+       $BTRFS_UTIL_PROG device delete --help | egrep devid > /dev/null 2>&1
+       [ $? -eq 0 ] || _notrun "$BTRFS_UTIL_PROG too old "\
+                       "(must support 'btrfs device delete <devid> /<mnt>')"
+}
+
 _get_total_inode()
 {
        if [ -z "$1" ]; then

diff --git a/tests/btrfs/101 b/tests/btrfs/101
new file mode 100755 (executable)
index 0000000..5969ab6
--- /dev/null
+++ b/tests/btrfs/101
@@ -0,0 +1,82 @@
+#! /bin/bash
+# FS QA Test No. btrfs/101
+#
+# Test device delete when the source device has EIO
+#
+# Copyright (c) 2015 Oracle.  All Rights Reserved.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it would be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write the Free Software Foundation,
+# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+
+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()
+{
+       _dmerror_cleanup
+       rm -f $tmp.*
+}
+
+# get standard environment, filters and checks
+. ./common/rc
+. ./common/filter
+. ./common/filter.btrfs
+. ./common/dmerror
+
+_supported_fs btrfs
+_supported_os Linux
+_need_to_be_root
+_require_scratch_dev_pool 3
+_require_btrfs_dev_del_by_devid
+_dmerror_required
+
+rm -f $seqres.full
+
+dev1="`echo $SCRATCH_DEV_POOL | $AWK_PROG '{print $2}'`"
+dev2="`echo $SCRATCH_DEV_POOL | $AWK_PROG '{print $3}'`"
+
+_dmerror_init
+_mkfs_dev -f -d raid1 -m raid1 $dev1 $dev2 $DMERROR_DEV
+_dmerror_mount
+
+_run_btrfs_util_prog filesystem show -m $SCRATCH_MNT
+$BTRFS_UTIL_PROG filesystem show -m $SCRATCH_MNT | _filter_btrfs_filesystem_show
+
+error_devid=`$BTRFS_UTIL_PROG filesystem show -m $SCRATCH_MNT |\
+                       egrep $DMERROR_DEV | $AWK_PROG '{print $2}'`
+
+snapshot_cmd="$BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT"
+snapshot_cmd="$snapshot_cmd $SCRATCH_MNT/snap_\`date +'%H_%M_%S_%N'\`"
+run_check $FSSTRESS_PROG -d $SCRATCH_MNT -n 200 -p 8 $FSSTRESS_AVOID -x \
+                                                       "$snapshot_cmd" -X 50
+
+# now load the error into the DMERROR_DEV
+_dmerror_load_table
+
+_run_btrfs_util_prog device delete $error_devid $SCRATCH_MNT
+
+_run_btrfs_util_prog filesystem show -m $SCRATCH_MNT
+$BTRFS_UTIL_PROG filesystem show -m $SCRATCH_MNT | _filter_btrfs_filesystem_show
+
+echo "=== device delete completed"
+
+status=0; exit

diff --git a/tests/btrfs/101.out b/tests/btrfs/101.out
new file mode 100644 (file)
index 0000000..4621902
--- /dev/null
+++ b/tests/btrfs/101.out
@@ -0,0 +1,11 @@
+QA output created by 101
+Label: none  uuid:  <UUID>
+       Total devices <NUM> FS bytes used <SIZE>
+       devid <DEVID> size <SIZE> used <SIZE> path SCRATCH_DEV
+       devid <DEVID> size <SIZE> used <SIZE> path /dev/mapper/error-test
+
+Label: none  uuid:  <UUID>
+       Total devices <NUM> FS bytes used <SIZE>
+       devid <DEVID> size <SIZE> used <SIZE> path SCRATCH_DEV
+
+=== device delete completed

diff --git a/tests/btrfs/group b/tests/btrfs/group
index 6370f5426bcabbc5d01cc62124d41669dfed0854..c3abb99840e547a1f3d5d94e14fa8cccc58bdf22 100644 (file)
--- a/tests/btrfs/group
+++ b/tests/btrfs/group
@@ -103,3 +103,4 @@
 098 auto quick metadata clone
 099 auto quick qgroup
 100 auto quick replace
+101 auto quick replace