tests/btrfs/179

   1 #! /bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3 # Copyright (C) 2019 SUSE Linux Products GmbH. All Rights Reserved.
   4 #
   5 # FS QA Test 179
   6 #
   7 # Test if btrfs will lockup at subvolume deletion when qgroups are enabled.
   8 #
   9 # This bug is going to be fixed by a patch for the kernel titled
  10 # "btrfs: qgroup: Don't trigger backref walk at delayed ref insert time".
  11 #
  12 seq=`basename $0`
  13 seqres=$RESULT_DIR/$seq
  14 echo "QA output created by $seq"
  15
  16 here=`pwd`
  17 tmp=/tmp/$$
  18 status=1        # failure is the default!
  19 trap "_cleanup; exit \$status" 0 1 2 3 15
  20
  21 _cleanup()
  22 {
  23         cd /
  24         rm -f $tmp.*
  25 }
  26
  27 # get standard environment, filters and checks
  28 . ./common/rc
  29 . ./common/filter
  30
  31 # remove previous $seqres.full before test
  32 rm -f $seqres.full
  33
  34 # real QA test starts here
  35
  36 # Modify as appropriate.
  37 _supported_fs btrfs
  38 _supported_os Linux
  39 _require_scratch
  40
  41 # default sleep interval
  42 sleep_time=1
  43
  44 # stress test runtime
  45 runtime=120
  46
  47 _scratch_mkfs > /dev/null 2>&1
  48 _scratch_mount
  49
  50 mkdir -p "$SCRATCH_MNT/snapshots"
  51 $BTRFS_UTIL_PROG subvolume create "$SCRATCH_MNT/src" > /dev/null
  52 $BTRFS_UTIL_PROG quota enable "$SCRATCH_MNT" > /dev/null
  53 $BTRFS_UTIL_PROG quota rescan -w "$SCRATCH_MNT" > /dev/null
  54
  55 fill_workload()
  56 {
  57         trap "wait; exit" SIGTERM
  58         local i=0
  59         while true; do
  60                 _pwrite_byte 0xcd 0 8K "$SCRATCH_MNT/src/large_$i" > /dev/null
  61                 _pwrite_byte 0xcd 0 2K "$SCRATCH_MNT/src/inline_$i" > /dev/null
  62
  63                 # Randomly remove some files for every 5 loop
  64                 if [ $(( $i % 5 )) -eq 0 ]; then
  65                         victim=$(ls "$SCRATCH_MNT/src" | sort -R | head -n1)
  66                         rm "$SCRATCH_MNT/src/$victim"
  67                 fi
  68                 i=$((i + 1))
  69         done
  70 }
  71
  72 snapshot_workload()
  73 {
  74         trap "wait; exit" SIGTERM
  75         local i=0
  76         while true; do
  77                 sleep $sleep_time
  78                 $BTRFS_UTIL_PROG subvolume snapshot "$SCRATCH_MNT/src" \
  79                         "$SCRATCH_MNT/snapshots/$i" > /dev/null
  80                 i=$((i + 1))
  81         done
  82 }
  83
  84 delete_workload()
  85 {
  86         trap "wait; exit" SIGTERM
  87         while true; do
  88                 sleep $((sleep_time * 2))
  89                 victim=$(ls "$SCRATCH_MNT/snapshots" | sort -R | head -n1)
  90                 $BTRFS_UTIL_PROG subvolume delete \
  91                         "$SCRATCH_MNT/snapshots/$victim" > /dev/null
  92         done
  93 }
  94
  95 fill_workload &
  96 fill_pid=$!
  97
  98 sleep $((sleep_time * 2))
  99 snapshot_workload &
 100 snapshot_pid=$!
 101 delete_workload &
 102 delete_pid=$!
 103
 104 sleep $runtime
 105 kill $fill_pid
 106 wait $fill_pid
 107 kill $snapshot_pid
 108 wait $snapshot_pid
 109 kill $delete_pid
 110 wait $delete_pid
 111
 112 # success, all done
 113 echo "Silence is golden"
 114
 115 status=0
 116 exit