tests/btrfs/154

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (c) 2017 Oracle.  All Rights Reserved.
   4 #
   5 # FS QA Test 154
   6 #
   7 # Test for reappearing missing device functionality.
   8 #   This test will fail without the btrfs kernel patch
   9 #   [PATCH] btrfs: handle dynamically reappearing missing device
  10 #
  11 seq=`basename $0`
  12 seqres=$RESULT_DIR/$seq
  13 echo "QA output created by $seq"
  14
  15 here=`pwd`
  16 tmp=/tmp/$$
  17 status=1        # failure is the default!
  18 trap "_cleanup; exit \$status" 0 1 2 3 15
  19
  20 _cleanup()
  21 {
  22         cd /
  23         rm -f $tmp.*
  24 }
  25
  26 # get standard environment, filters and checks
  27 . ./common/rc
  28 . ./common/filter
  29 . ./common/module
  30
  31 # remove previous $seqres.full before test
  32 rm -f $seqres.full
  33
  34 # real QA test starts here
  35
  36 _supported_fs btrfs
  37 _supported_os Linux
  38 _require_scratch_dev_pool 2
  39 _require_btrfs_forget_or_module_loadable
  40
  41 _scratch_dev_pool_get 2
  42
  43 DEV1=`echo $SCRATCH_DEV_POOL | awk '{print $1}'`
  44 DEV2=`echo $SCRATCH_DEV_POOL | awk '{print $2}'`
  45
  46 echo DEV1=$DEV1 >> $seqres.full
  47 echo DEV2=$DEV2 >> $seqres.full
  48
  49 # Balance won't be successful if filled too much
  50 DEV1_SZ=`blockdev --getsize64 $DEV1`
  51 DEV2_SZ=`blockdev --getsize64 $DEV2`
  52
  53 # get min
  54 MAX_FS_SZ=`echo -e "$DEV1_SZ\n$DEV2_SZ" | sort -n | head -1`
  55 # Need disks with more than 2G
  56 if [ $MAX_FS_SZ -lt 2000000000 ]; then
  57         _scratch_dev_pool_put
  58         _notrun "Smallest dev size $MAX_FS_SZ, Need at least 2G"
  59 fi
  60
  61 MAX_FS_SZ=100000000
  62 bs="1M"
  63 COUNT=$(($MAX_FS_SZ / 1000000))
  64 CHECKPOINT1=0
  65 CHECKPOINT2=0
  66
  67 setup()
  68 {
  69         echo >> $seqres.full
  70         echo "MAX_FS_SZ=$MAX_FS_SZ COUNT=$COUNT" >> $seqres.full
  71         echo "setup"
  72         echo "-----setup-----" >> $seqres.full
  73         _scratch_pool_mkfs "-mraid1 -draid1" >> $seqres.full 2>&1
  74         _scratch_mount >> $seqres.full 2>&1
  75         dd if=/dev/urandom of="$SCRATCH_MNT"/tf bs=$bs count=1 \
  76                                         >>$seqres.full 2>&1
  77         _run_btrfs_util_prog filesystem show -m ${SCRATCH_MNT}
  78         _run_btrfs_util_prog filesystem df $SCRATCH_MNT
  79         COUNT=$(( $COUNT - 1 ))
  80         echo "unmount" >> $seqres.full
  81         _scratch_unmount
  82 }
  83
  84 degrade_mount_write()
  85 {
  86         echo >> $seqres.full
  87         echo "--degraded mount: max_fs_sz $max_fs_sz bytes--" >> $seqres.full
  88         echo
  89         echo "degraded mount"
  90
  91         echo "clean btrfs ko" >> $seqres.full
  92         # un-scan the btrfs devices
  93         _btrfs_forget_or_module_reload
  94         _mount -o degraded $DEV1 $SCRATCH_MNT >>$seqres.full 2>&1
  95         cnt=$(( $COUNT/10 ))
  96         dd if=/dev/urandom of="$SCRATCH_MNT"/tf1 bs=$bs count=$cnt \
  97                                         >>$seqres.full 2>&1
  98         COUNT=$(( $COUNT - $cnt ))
  99         _run_btrfs_util_prog filesystem show -m $SCRATCH_MNT
 100         _run_btrfs_util_prog filesystem df $SCRATCH_MNT
 101         CHECKPOINT1=`md5sum $SCRATCH_MNT/tf1`
 102         echo $SCRATCH_MNT/tf1:$CHECKPOINT1 >> $seqres.full
 103 }
 104
 105 scan_missing_dev_and_write()
 106 {
 107         echo >> $seqres.full
 108         echo "--scan missing $DEV2--" >> $seqres.full
 109         echo
 110         echo "scan missing dev and write"
 111
 112         _run_btrfs_util_prog device scan $DEV2
 113
 114         echo >> $seqres.full
 115
 116         _run_btrfs_util_prog filesystem show -m ${SCRATCH_MNT}
 117         _run_btrfs_util_prog filesystem df ${SCRATCH_MNT}
 118
 119         dd if=/dev/urandom of="$SCRATCH_MNT"/tf2 bs=$bs count=$COUNT \
 120                                                 >>$seqres.full 2>&1
 121         CHECKPOINT2=`md5sum $SCRATCH_MNT/tf2`
 122         echo $SCRATCH_MNT/tf2:$CHECKPOINT2 >> $seqres.full
 123 }
 124
 125 balance_convert()
 126 {
 127         echo >> $seqres.full
 128         echo "----- run balance -----" >> $seqres.full
 129         echo
 130         echo "run balance"
 131
 132         _run_btrfs_balance_start -dconvert=raid1 \
 133                                  -mconvert=raid1 $SCRATCH_MNT >> $seqres.full
 134 }
 135
 136 verify()
 137 {
 138         echo >> $seqres.full
 139         echo "--mount reconstructed dev only and check md5sum--" >> $seqres.full
 140         echo
 141         echo "mount reconstructed dev only and check md5sum"
 142         echo "unmount" >> $seqres.full
 143
 144         _scratch_unmount
 145         _btrfs_forget_or_module_reload
 146         _mount -o degraded $DEV2 $SCRATCH_MNT >>$seqres.full 2>&1
 147         verify_checkpoint1=`md5sum $SCRATCH_MNT/tf1`
 148         verify_checkpoint2=`md5sum $SCRATCH_MNT/tf2`
 149
 150         if [ "$verify_checkpoint1" != "$CHECKPOINT1" ]; then
 151                 echo "checkpoint1 on reappeared disk does not match after balance"
 152         fi
 153
 154         if [ "$verify_checkpoint2" != "$CHECKPOINT2" ]; then
 155                 echo "checkpoint2 on reappeared disk does not match after balance"
 156         fi
 157 }
 158
 159 setup
 160 degrade_mount_write
 161 scan_missing_dev_and_write
 162 balance_convert
 163 verify
 164
 165 $UMOUNT_PROG $DEV2
 166 _scratch_dev_pool_put
 167
 168 status=0
 169 exit