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https://github.com/linux-apfs/apfstests.git
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btrfs: test for device dynamic rescan
Make sure missing device is included in the alloc list when it is scanned on a mounted FS. This test case needs btrfs kernel patch which is in the ML [PATCH] btrfs: handle dynamically reappearing missing device Without the kernel patch, the test will run, but reports as failed, as the device scanned won't appear in the alloc_list. Signed-off-by: Anand Jain <anand.jain@oracle.com> Reviewed-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
This commit is contained in:
Anand Jain
Eryu Guan
Executable
+185
@@ -0,0 +1,185 @@
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#! /bin/bash
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# FS QA Test 154
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#
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# Test for reappearing missing device functionality.
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# This test will fail without the btrfs kernel patch
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# [PATCH] btrfs: handle dynamically reappearing missing device
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#
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#---------------------------------------------------------------------
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# Copyright (c) 2017 Oracle. All Rights Reserved.
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# Author: Anand Jain <anand.jain@oracle.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#---------------------------------------------------------------------
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/module
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# remove previous $seqres.full before test
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rm -f $seqres.full
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# real QA test starts here
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_supported_fs btrfs
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_supported_os Linux
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_require_scratch_dev_pool 2
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_require_loadable_fs_module "btrfs"
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_scratch_dev_pool_get 2
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DEV1=`echo $SCRATCH_DEV_POOL | awk '{print $1}'`
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DEV2=`echo $SCRATCH_DEV_POOL | awk '{print $2}'`
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echo DEV1=$DEV1 >> $seqres.full
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echo DEV2=$DEV2 >> $seqres.full
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# Balance won't be successful if filled too much
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DEV1_SZ=`blockdev --getsize64 $DEV1`
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DEV2_SZ=`blockdev --getsize64 $DEV2`
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# get min
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MAX_FS_SZ=`echo -e "$DEV1_SZ\n$DEV2_SZ" | sort | head -1`
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# Need disks with more than 2G
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if [ $MAX_FS_SZ -lt 2000000000 ]; then
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_scratch_dev_pool_put
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_notrun "Smallest dev size $MAX_FS_SZ, Need at least 2G"
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fi
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MAX_FS_SZ=100000000
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bs="1M"
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COUNT=$(($MAX_FS_SZ / 1000000))
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CHECKPOINT1=0
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CHECKPOINT2=0
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setup()
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{
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echo >> $seqres.full
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echo "MAX_FS_SZ=$MAX_FS_SZ COUNT=$COUNT" >> $seqres.full
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echo "setup"
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echo "-----setup-----" >> $seqres.full
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_scratch_pool_mkfs "-mraid1 -draid1" >> $seqres.full 2>&1
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_scratch_mount >> $seqres.full 2>&1
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dd if=/dev/urandom of="$SCRATCH_MNT"/tf bs=$bs count=1 \
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>>$seqres.full 2>&1
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_run_btrfs_util_prog filesystem show -m ${SCRATCH_MNT}
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_run_btrfs_util_prog filesystem df $SCRATCH_MNT
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COUNT=$(( $COUNT - 1 ))
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echo "unmount" >> $seqres.full
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_scratch_unmount
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}
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degrade_mount_write()
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{
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echo >> $seqres.full
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echo "--degraded mount: max_fs_sz $max_fs_sz bytes--" >> $seqres.full
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echo
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echo "degraded mount"
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echo "clean btrfs ko" >> $seqres.full
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# un-scan the btrfs devices
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_reload_fs_module "btrfs"
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_mount -o degraded $DEV1 $SCRATCH_MNT >>$seqres.full 2>&1
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cnt=$(( $COUNT/10 ))
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dd if=/dev/urandom of="$SCRATCH_MNT"/tf1 bs=$bs count=$cnt \
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>>$seqres.full 2>&1
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COUNT=$(( $COUNT - $cnt ))
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_run_btrfs_util_prog filesystem show -m $SCRATCH_MNT
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_run_btrfs_util_prog filesystem df $SCRATCH_MNT
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CHECKPOINT1=`md5sum $SCRATCH_MNT/tf1`
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echo $SCRATCH_MNT/tf1:$CHECKPOINT1 >> $seqres.full
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}
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scan_missing_dev_and_write()
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{
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echo >> $seqres.full
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echo "--scan missing $DEV2--" >> $seqres.full
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echo
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echo "scan missing dev and write"
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_run_btrfs_util_prog device scan $DEV2
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echo >> $seqres.full
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_run_btrfs_util_prog filesystem show -m ${SCRATCH_MNT}
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_run_btrfs_util_prog filesystem df ${SCRATCH_MNT}
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dd if=/dev/urandom of="$SCRATCH_MNT"/tf2 bs=$bs count=$COUNT \
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>>$seqres.full 2>&1
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CHECKPOINT2=`md5sum $SCRATCH_MNT/tf2`
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echo $SCRATCH_MNT/tf2:$CHECKPOINT2 >> $seqres.full
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}
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balance_convert()
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{
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echo >> $seqres.full
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echo "----- run balance -----" >> $seqres.full
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echo
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echo "run balance"
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_run_btrfs_util_prog balance start --full-balance -dconvert=raid1 \
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-mconvert=raid1 ${SCRATCH_MNT}
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}
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verify()
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{
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echo >> $seqres.full
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echo "--mount reconstructed dev only and check md5sum--" >> $seqres.full
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echo
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echo "mount reconstructed dev only and check md5sum"
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echo "unmount" >> $seqres.full
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_scratch_unmount
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_reload_fs_module "btrfs"
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_mount -o degraded $DEV2 $SCRATCH_MNT >>$seqres.full 2>&1
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verify_checkpoint1=`md5sum $SCRATCH_MNT/tf1`
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verify_checkpoint2=`md5sum $SCRATCH_MNT/tf2`
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if [ "$verify_checkpoint1" != "$CHECKPOINT1" ]; then
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echo "checkpoint1 on reappeared disk does not match after balance"
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fi
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if [ "$verify_checkpoint2" != "$CHECKPOINT2" ]; then
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echo "checkpoint2 on reappeared disk does not match after balance"
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fi
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}
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setup
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degrade_mount_write
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scan_missing_dev_and_write
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balance_convert
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verify
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$UMOUNT_PROG $DEV2
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_scratch_dev_pool_put
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status=0
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exit
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@@ -0,0 +1,10 @@
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QA output created by 154
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setup
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degraded mount
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scan missing dev and write
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run balance
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mount reconstructed dev only and check md5sum
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@@ -156,3 +156,4 @@
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151 auto quick
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152 auto quick metadata qgroup send
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153 auto quick qgroup
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154 auto quick
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