2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2016 Oracle. All Rights Reserved.
7 # This test verify if the reconstructed data on the RAID5 is good.
9 # Initialize RAID5 with some data
11 # Re-mount RAID5 degraded with dev3 missing and write data
12 # Save md5sum checkpoint1
14 # Re-mount healthy RAID5
16 # Let balance fix the RAID5.
17 # Save md5sum checkpoint2
19 # Re-mount RAID5 degraded with dev1 as missing.
20 # Save md5sum checkpoint3
22 # Verify if all three checkpoints match
25 seqres=$RESULT_DIR/$seq
26 echo "QA output created by $seq"
30 status=1 # failure is the default!
31 trap "_cleanup; exit \$status" 0 1 2 3 15
40 # get standard environment, filters and checks
45 # remove previous $seqres.full before test
48 # real QA test starts here
51 _require_scratch_dev_pool 3
53 _require_btrfs_forget_or_module_loadable
54 _require_btrfs_fs_feature raid56
56 _scratch_dev_pool_get 3
58 dev1=`echo $SCRATCH_DEV_POOL | awk '{print $1}'`
59 dev2=`echo $SCRATCH_DEV_POOL | awk '{print $2}'`
60 dev3=`echo $SCRATCH_DEV_POOL | awk '{print $3}'`
62 echo dev1=$dev1 >> $seqres.full
63 echo dev2=$dev2 >> $seqres.full
64 echo dev3=$dev3 >> $seqres.full
66 # Balance won't be successful if filled too much
67 dev1_sz=`blockdev --getsize64 $dev1`
68 dev2_sz=`blockdev --getsize64 $dev2`
69 dev3_sz=`blockdev --getsize64 $dev3`
72 max_fs_sz=`echo -e "$dev1_sz\n$dev2_sz\n$dev3_sz" | sort -n | head -1`
73 # Need disks with more than 2G
74 if [ $max_fs_sz -lt 2000000000 ]; then
77 _notrun "Smallest dev size $max_fs_sz, Need at least 2G"
81 count=$(($max_fs_sz / 1000000))
83 #-------------normal init-------------------
85 echo "max_fs_sz=$max_fs_sz count=$count" >> $seqres.full
86 echo "-----Initialize -----" >> $seqres.full
87 _scratch_pool_mkfs "-mraid5 -draid5" >> $seqres.full 2>&1
88 _scratch_mount >> $seqres.full 2>&1
89 dd if=/dev/zero of="$SCRATCH_MNT"/tf1 bs=$bs count=1 \
91 _run_btrfs_util_prog filesystem show
92 _run_btrfs_util_prog filesystem df $SCRATCH_MNT
96 #-------------degraded-init-------------------
98 echo "-----Write degraded mount fill upto $max_fs_sz bytes-----" >> $seqres.full
100 echo "Write data with degraded mount"
102 echo "unmount" >> $seqres.full
104 echo "clean btrfs ko" >> $seqres.full
105 # un-scan the btrfs devices
106 _btrfs_forget_or_module_reload
107 _mount -o degraded,device=$dev2 $dev1 $SCRATCH_MNT >>$seqres.full 2>&1
108 dd if=/dev/zero of="$SCRATCH_MNT"/tf2 bs=$bs count=$count \
110 _run_btrfs_util_prog filesystem show
111 _run_btrfs_util_prog filesystem df $SCRATCH_MNT
112 checkpoint1=`md5sum $SCRATCH_MNT/tf2`
113 echo $checkpoint1 >> $seqres.full 2>&1
115 #-------------balance-------------------
117 echo "-----Mount normal-----" >> $seqres.full
119 echo "Mount normal and balance"
122 _run_btrfs_util_prog device scan
123 _scratch_mount >> $seqres.full 2>&1
126 _run_btrfs_balance_start $SCRATCH_MNT >> $seqres.full
128 _run_btrfs_util_prog filesystem show
129 _run_btrfs_util_prog filesystem df ${SCRATCH_MNT}
131 checkpoint2=`md5sum $SCRATCH_MNT/tf2`
132 echo $checkpoint2 >> $seqres.full 2>&1
134 #-------------degraded-mount-------------------
136 echo "-----Mount degraded with dev1 missing-----" >> $seqres.full
138 echo "Mount degraded but with other dev"
141 # un-scan the btrfs devices
142 _btrfs_forget_or_module_reload
144 _mount -o degraded,device=${dev2} $dev3 $SCRATCH_MNT >>$seqres.full 2>&1
146 _run_btrfs_util_prog filesystem show
147 _run_btrfs_util_prog filesystem df $SCRATCH_MNT
148 checkpoint3=`md5sum $SCRATCH_MNT/tf2`
149 echo $checkpoint3 >> $seqres.full 2>&1
151 if [ "$checkpoint1" != "$checkpoint2" ]; then
154 echo "Inital sum does not match with after balance"
157 if [ "$checkpoint1" != "$checkpoint3" ]; then
160 echo "Inital sum does not match with data on dev2 written by balance"
164 _scratch_dev_pool_put
165 _btrfs_rescan_devices