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+#! /bin/bash
+# FS QA Test 124
+#
+# This test verify if the reconstructed data on the RAID5 is good.
+# Steps:
+# Initialize RAID5 with some data
+#
+# Re-mount RAID5 degraded with dev3 missing and write data
+# Save md5sum checkpoint1
+#
+# Re-mount healthy RAID5
+#
+# Let balance fix the RAID5.
+# Save md5sum checkpoint2
+#
+# Re-mount RAID5 degraded with dev1 as 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
+
+# remove previous $seqres.full before test
+rm -f $seqres.full
+
+# real QA test starts here
+
+_supported_fs btrfs
+_supported_os Linux
+_require_scratch_nocheck
+_require_scratch_dev_pool 3
+
+# we need btrfs to unload, need test dir unmounted
+_test_unmount
+_require_btrfs_loadable
+
+_scratch_dev_pool_get 3
+
+dev1=`echo $SCRATCH_DEV_POOL | awk '{print $1}'`
+dev2=`echo $SCRATCH_DEV_POOL | awk '{print $2}'`
+dev3=`echo $SCRATCH_DEV_POOL | awk '{print $3}'`
+
+echo dev1=$dev1 >> $seqres.full
+echo dev2=$dev2 >> $seqres.full
+echo dev3=$dev3 >> $seqres.full
+
+# Balance won't be successful if filled too much
+dev1_sz=`blockdev --getsize64 $dev1`
+dev2_sz=`blockdev --getsize64 $dev2`
+dev3_sz=`blockdev --getsize64 $dev3`
+
+# get min of both
+max_fs_sz=`echo -e "$dev1_sz\n$dev2_sz\n$dev3_sz" | sort | head -1`
+if [ $max_fs_sz -gt 1000000 ]; then
+ bs="1M"
+ count=$(( max_fs_sz/1000000 ))
+ count=$(( count/100 ))
+else
+ _scratch_dev_pool_put
+ _test_mount
+ _notrun "Smallest dev size $max_fs_sz, Need at least 2M"
+fi
+
+#-------------init-------------------
+echo >> $seqres.full
+echo "max_fs_sz=$max_fs_sz count=$count" >> $seqres.full
+echo "-----Initialize -----" >> $seqres.full
+_scratch_pool_mkfs "-mraid5 -draid5" >> $seqres.full 2>&1
+_scratch_mount >> $seqres.full 2>&1
+dd if=/dev/zero of="$SCRATCH_MNT"/tf1 bs=$bs count=1 \
+ >>$seqres.full 2>&1
+_run_btrfs_util_prog filesystem show
+_run_btrfs_util_prog filesystem df $SCRATCH_MNT
+count=$(( count-- ))
+
+
+#-------------degraded-init-------------------
+echo >> $seqres.full
+echo "-----Write degraded mount fill upto $max_fs_sz bytes-----" >> $seqres.full
+echo
+echo "Write data with degraded mount"
+
+echo "unmount" >> $seqres.full
+_scratch_unmount
+echo "clean btrfs ko" >> $seqres.full
+# un-scan the btrfs devices
+_reload_btrfs_ko
+_mount -o degraded,device=$dev2 $dev1 $SCRATCH_MNT >>$seqres.full 2>&1
+dd if=/dev/zero of="$SCRATCH_MNT"/tf2 bs=$bs count=$count \
+ >>$seqres.full 2>&1
+_run_btrfs_util_prog filesystem show
+_run_btrfs_util_prog filesystem df $SCRATCH_MNT
+checkpoint1=`md5sum $SCRATCH_MNT/tf2`
+echo $checkpoint1 >> $seqres.full 2>&1
+
+#-------------balance-------------------
+echo >> $seqres.full
+echo "-----Mount normal-----" >> $seqres.full
+echo
+echo "Mount normal after balance"
+
+_scratch_unmount
+_run_btrfs_util_prog device scan
+_scratch_mount >> $seqres.full 2>&1
+
+echo >> $seqres.full
+_run_btrfs_util_prog balance start ${SCRATCH_MNT}
+
+_run_btrfs_util_prog filesystem show
+_run_btrfs_util_prog filesystem df ${SCRATCH_MNT}
+
+checkpoint2=`md5sum $SCRATCH_MNT/tf2`
+echo $checkpoint2 >> $seqres.full 2>&1
+
+#-------------degraded-mount-------------------
+echo >> $seqres.full
+echo "-----Mount degraded with dev1 missing-----" >> $seqres.full
+echo
+echo "Mount degraded but with other dev"
+
+_scratch_unmount
+# un-scan the btrfs devices
+_reload_btrfs_ko
+
+_mount -o degraded,device=${dev2} $dev3 $SCRATCH_MNT >>$seqres.full 2>&1
+
+_run_btrfs_util_prog filesystem show
+_run_btrfs_util_prog filesystem df $SCRATCH_MNT
+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
+
+_scratch_dev_pool_put
+_test_mount
+
+status=0
+exit
new file mode 100644
@@ -0,0 +1,7 @@
+QA output created by 124
+
+Write data with degraded mount
+
+Mount normal after balance
+
+Mount degraded but with other dev
@@ -125,3 +125,4 @@
121 auto quick snapshot qgroup
122 auto quick snapshot qgroup
123 auto replace
+124 auto replace