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apfstests/tests/btrfs/124
T
Darrick J. Wong a6ce8c2c9e fstests: add module reloading helpers
Add some helper functions to require that we can reload a given
module, and add a helper to actually do that.  Refactor the existing
users to use the generics.

We need to hoist completely the behaviors of the old btrfs module
helper because we need to confirm before starting the test that we
actually can remove the module.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
2017-11-03 19:04:49 +08:00

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#! /bin/bash
# FS QA Test 124
#
# This test verify the RAID1 reconstruction on the reappeared
# device. By using the following steps:
# Initialize a RAID1 with some data
#
# Re-mount RAID1 degraded with dev2 missing and write up to
# half of the FS capacity.
# Save md5sum checkpoint1
#
# Re-mount healthy RAID1
#
# Let balance re-silver.
# Save md5sum checkpoint2
#
# Re-mount RAID1 degraded with dev1 missing
# Save md5sum checkpoint3
#
# Verify if all three checkpoints match
#
#---------------------------------------------------------------------
# Copyright (c) 2016 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()
{
cd /
rm -f $tmp.*
}
# get standard environment, filters and checks
. ./common/rc
. ./common/filter
. ./common/module
# remove previous $seqres.full before test
rm -f $seqres.full
# real QA test starts here
_supported_fs btrfs
_supported_os Linux
_require_scratch_dev_pool 2
_test_unmount
_require_loadable_fs_module "btrfs"
_scratch_dev_pool_get 2
dev1=`echo $SCRATCH_DEV_POOL | awk '{print $1}'`
dev2=`echo $SCRATCH_DEV_POOL | awk '{print $2}'`
dev1_sz=`blockdev --getsize64 $dev1`
dev2_sz=`blockdev --getsize64 $dev2`
# get min of both
max_fs_sz=`echo -e "$dev1_sz\n$dev2_sz" | sort | head -1`
# Need disks with more than 2G.
if [ $max_fs_sz -lt 2000000000 ]; then
_scratch_dev_pool_put
_test_mount
_notrun "Smallest dev size $max_fs_sz, Need at least 2G"
fi
max_fs_sz=1200000000
bs="1M"
count=$(($max_fs_sz / 1000000))
echo >> $seqres.full
echo "max_fs_sz=$max_fs_sz count=$count" >> $seqres.full
echo "-----Initialize -----" >> $seqres.full
_scratch_pool_mkfs "-mraid1 -draid1" >> $seqres.full 2>&1
_scratch_mount >> $seqres.full 2>&1
_run_btrfs_util_prog filesystem show
dd if=/dev/zero of="$SCRATCH_MNT"/tf1 bs=$bs count=1 \
>>$seqres.full 2>&1
count=$(( count-- ))
echo "unmount" >> $seqres.full
echo "clean btrfs ko" >> $seqres.full
_scratch_unmount
# un-scan the btrfs devices
_reload_fs_module "btrfs"
echo >> $seqres.full
echo "-----Write degraded mount fill upto $max_fs_sz bytes-----" >> $seqres.full
echo
echo "Write data with degraded mount"
# Since we didn't run dev scan, btrfs kernel does not know
# about the dev2
# don't use _scratch_mount as we want to control
# the device used for mounting.
_mount -o degraded $dev1 $SCRATCH_MNT >>$seqres.full 2>&1
_run_btrfs_util_prog filesystem show
dd if=/dev/zero of="$SCRATCH_MNT"/tf2 bs=$bs count=$count \
>>$seqres.full 2>&1
checkpoint1=`md5sum $SCRATCH_MNT/tf2`
echo $checkpoint1 >> $seqres.full 2>&1
_scratch_unmount
echo "unmount" >> $seqres.full
echo >> $seqres.full
echo "-----Mount normal-----" >> $seqres.full
echo
echo "Mount normal and balance"
_run_btrfs_util_prog device scan
_scratch_mount >> $seqres.full 2>&1
_run_btrfs_util_prog filesystem show
echo >> $seqres.full
_run_btrfs_util_prog balance start ${SCRATCH_MNT}
checkpoint2=`md5sum $SCRATCH_MNT/tf2`
echo $checkpoint2 >> $seqres.full 2>&1
echo >> $seqres.full
echo "-----Mount degraded with the other dev -----" >> $seqres.full
echo
echo "Mount degraded with the other dev"
_scratch_unmount
# un-scan the btrfs devices
_reload_fs_module "btrfs"
_mount -o degraded $dev2 $SCRATCH_MNT >>$seqres.full 2>&1
_run_btrfs_util_prog filesystem show
checkpoint3=`md5sum $SCRATCH_MNT/tf2`
echo $checkpoint3 >> $seqres.full 2>&1
if [ "$checkpoint1" != "$checkpoint2" ]; then
echo $checkpoint1
echo $checkpoint2
echo "Inital sum does not match with after balance"
fi
if [ "$checkpoint1" != "$checkpoint3" ]; then
echo $checkpoint1
echo $checkpoint3
echo "Inital sum does not match with data on dev2 written by balance"
fi
$UMOUNT_PROG $dev2
_scratch_dev_pool_put
_test_mount
status=0
exit