tests/btrfs/125

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (c) 2016 Oracle.  All Rights Reserved.
   4 #
   5 # FS QA Test 125
   6 #
   7 # This test verify if the reconstructed data on the RAID5 is good.
   8 # Steps:
   9 # Initialize RAID5 with some data
  10 #
  11 # Re-mount RAID5 degraded with dev3 missing and write data
  12 # Save md5sum checkpoint1
  13 #
  14 # Re-mount healthy RAID5
  15 #
  16 # Let balance fix the RAID5.
  17 # Save md5sum checkpoint2
  18 #
  19 # Re-mount RAID5 degraded with dev1 as missing.
  20 # Save md5sum checkpoint3
  21 #
  22 # Verify if all three checkpoints match
  23 #
  24 seq=`basename $0`
  25 seqres=$RESULT_DIR/$seq
  26 echo "QA output created by $seq"
  27
  28 here=`pwd`
  29 tmp=/tmp/$$
  30 status=1        # failure is the default!
  31 trap "_cleanup; exit \$status" 0 1 2 3 15
  32
  33 _cleanup()
  34 {
  35         cd /
  36         rm -f $tmp.*
  37         _btrfs_rescan_devices
  38 }
  39
  40 # get standard environment, filters and checks
  41 . ./common/rc
  42 . ./common/filter
  43 . ./common/module
  44
  45 # remove previous $seqres.full before test
  46 rm -f $seqres.full
  47
  48 # real QA test starts here
  49
  50 _supported_fs btrfs
  51 _require_scratch_dev_pool 3
  52 _test_unmount
  53 _require_btrfs_forget_or_module_loadable
  54 _require_btrfs_fs_feature raid56
  55
  56 _scratch_dev_pool_get 3
  57
  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 $3}'`
  61
  62 echo dev1=$dev1 >> $seqres.full
  63 echo dev2=$dev2 >> $seqres.full
  64 echo dev3=$dev3 >> $seqres.full
  65
  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 $dev3`
  70
  71 # get min of both.
  72 max_fs_sz=`echo -e "$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
  75         _scratch_dev_pool_put
  76         _test_mount
  77         _notrun "Smallest dev size $max_fs_sz, Need at least 2G"
  78 fi
  79 max_fs_sz=100000000
  80 bs="1M"
  81 count=$(($max_fs_sz / 1000000))
  82
  83 #-------------normal init-------------------
  84 echo >> $seqres.full
  85 echo "max_fs_sz=$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=$bs count=1 \
  90                                         >>$seqres.full 2>&1
  91 _run_btrfs_util_prog filesystem show
  92 _run_btrfs_util_prog filesystem df $SCRATCH_MNT
  93 count=$(( count-- ))
  94
  95
  96 #-------------degraded-init-------------------
  97 echo >> $seqres.full
  98 echo "-----Write degraded mount fill upto $max_fs_sz bytes-----" >> $seqres.full
  99 echo
 100 echo "Write data with degraded mount"
 101
 102 echo "unmount" >> $seqres.full
 103 _scratch_unmount
 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=$count \
 109                                         >>$seqres.full 2>&1
 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
 114
 115 #-------------balance-------------------
 116 echo >> $seqres.full
 117 echo "-----Mount normal-----" >> $seqres.full
 118 echo
 119 echo "Mount normal and balance"
 120
 121 _scratch_unmount
 122 _run_btrfs_util_prog device scan
 123 _scratch_mount >> $seqres.full 2>&1
 124
 125 echo >> $seqres.full
 126 _run_btrfs_balance_start $SCRATCH_MNT >> $seqres.full
 127
 128 _run_btrfs_util_prog filesystem show
 129 _run_btrfs_util_prog filesystem df ${SCRATCH_MNT}
 130
 131 checkpoint2=`md5sum $SCRATCH_MNT/tf2`
 132 echo $checkpoint2 >> $seqres.full 2>&1
 133
 134 #-------------degraded-mount-------------------
 135 echo >> $seqres.full
 136 echo "-----Mount degraded with dev1 missing-----" >> $seqres.full
 137 echo
 138 echo "Mount degraded but with other dev"
 139
 140 _scratch_unmount
 141 # un-scan the btrfs devices
 142 _btrfs_forget_or_module_reload
 143
 144 _mount -o degraded,device=${dev2} $dev3 $SCRATCH_MNT >>$seqres.full 2>&1
 145
 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 >> $seqres.full 2>&1
 150
 151 if [ "$checkpoint1" != "$checkpoint2" ]; then
 152         echo $checkpoint1
 153         echo $checkpoint2
 154         echo "Inital sum does not match with after balance"
 155 fi
 156
 157 if [ "$checkpoint1" != "$checkpoint3" ]; then
 158         echo $checkpoint1
 159         echo $checkpoint3
 160         echo "Inital sum does not match with data on dev2 written by balance"
 161 fi
 162
 163 $UMOUNT_PROG $dev2
 164 _scratch_dev_pool_put
 165 _btrfs_rescan_devices
 166 _test_mount
 167
 168 status=0
 169 exit