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 _begin_fstest replace volume balance
27 # Override the default cleanup function.
35 # Import common functions.
38 # real QA test starts here
41 _require_scratch_dev_pool 3
43 _require_btrfs_forget_or_module_loadable
44 _require_btrfs_fs_feature raid56
46 _scratch_dev_pool_get 3
48 dev1=`echo $SCRATCH_DEV_POOL | awk '{print $1}'`
49 dev2=`echo $SCRATCH_DEV_POOL | awk '{print $2}'`
50 dev3=`echo $SCRATCH_DEV_POOL | awk '{print $3}'`
52 echo dev1=$dev1 >> $seqres.full
53 echo dev2=$dev2 >> $seqres.full
54 echo dev3=$dev3 >> $seqres.full
56 # Balance won't be successful if filled too much
57 dev1_sz=`blockdev --getsize64 $dev1`
58 dev2_sz=`blockdev --getsize64 $dev2`
59 dev3_sz=`blockdev --getsize64 $dev3`
62 max_fs_sz=`echo -e "$dev1_sz\n$dev2_sz\n$dev3_sz" | sort -n | head -1`
63 # Need disks with more than 2G
64 if [ $max_fs_sz -lt 2000000000 ]; then
67 _notrun "Smallest dev size $max_fs_sz, Need at least 2G"
71 count=$(($max_fs_sz / 1000000))
73 #-------------normal init-------------------
75 echo "max_fs_sz=$max_fs_sz count=$count" >> $seqres.full
76 echo "-----Initialize -----" >> $seqres.full
77 _scratch_pool_mkfs "-mraid5 -draid5" >> $seqres.full 2>&1
78 _scratch_mount >> $seqres.full 2>&1
79 dd if=/dev/zero of="$SCRATCH_MNT"/tf1 bs=$bs count=1 \
81 _run_btrfs_util_prog filesystem show
82 _run_btrfs_util_prog filesystem df $SCRATCH_MNT
85 #-------------degraded-init-------------------
87 echo "-----Write degraded mount fill upto $max_fs_sz bytes-----" >> $seqres.full
89 echo "Write data with degraded mount"
91 echo "unmount" >> $seqres.full
93 echo "clean btrfs ko" >> $seqres.full
94 # un-scan the btrfs devices
95 _btrfs_forget_or_module_reload
96 _mount -o degraded,device=$dev2 $dev1 $SCRATCH_MNT >>$seqres.full 2>&1
97 dd if=/dev/zero of="$SCRATCH_MNT"/tf2 bs=$bs count=$count \
99 _run_btrfs_util_prog filesystem show
100 _run_btrfs_util_prog filesystem df $SCRATCH_MNT
101 checkpoint1=`md5sum $SCRATCH_MNT/tf2`
102 echo $checkpoint1 >> $seqres.full 2>&1
104 #-------------balance-------------------
106 echo "-----Mount normal-----" >> $seqres.full
108 echo "Mount normal and balance"
111 _run_btrfs_util_prog device scan
112 _scratch_mount >> $seqres.full 2>&1
115 _run_btrfs_balance_start $SCRATCH_MNT >> $seqres.full
117 _run_btrfs_util_prog filesystem show
118 _run_btrfs_util_prog filesystem df ${SCRATCH_MNT}
120 checkpoint2=`md5sum $SCRATCH_MNT/tf2`
121 echo $checkpoint2 >> $seqres.full 2>&1
123 #-------------degraded-mount-------------------
125 echo "-----Mount degraded with dev1 missing-----" >> $seqres.full
127 echo "Mount degraded but with other dev"
130 # un-scan the btrfs devices
131 _btrfs_forget_or_module_reload
133 _mount -o degraded,device=${dev2} $dev3 $SCRATCH_MNT >>$seqres.full 2>&1
135 _run_btrfs_util_prog filesystem show
136 _run_btrfs_util_prog filesystem df $SCRATCH_MNT
137 checkpoint3=`md5sum $SCRATCH_MNT/tf2`
138 echo $checkpoint3 >> $seqres.full 2>&1
140 if [ "$checkpoint1" != "$checkpoint2" ]; then
143 echo "Inital sum does not match with after balance"
146 if [ "$checkpoint1" != "$checkpoint3" ]; then
149 echo "Inital sum does not match with data on dev2 written by balance"
153 _scratch_dev_pool_put
154 _btrfs_rescan_devices