tests/btrfs/192

   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 192
   6 #
   7 # Test btrfs consistency after each FUA for a workload with snapshot creation
   8 # and removal
   9 #
  10 . ./common/preamble
  11 _begin_fstest auto replay snapshot stress recoveryloop
  12
  13 # Override the default cleanup function.
  14 _cleanup()
  15 {
  16         cd /
  17         kill -q $pid1 &> /dev/null
  18         kill -q $pid2 &> /dev/null
  19         "$KILLALL_PROG" -q $FSSTRESS_PROG &> /dev/null
  20         wait
  21         _log_writes_cleanup &> /dev/null
  22         rm -f $tmp.*
  23 }
  24
  25 # Import common functions.
  26 . ./common/filter
  27 . ./common/attr
  28 . ./common/dmlogwrites
  29
  30 # real QA test starts here
  31
  32 # Modify as appropriate.
  33 _supported_fs btrfs
  34
  35 _require_command "$KILLALL_PROG" killall
  36 _require_command "$BLKDISCARD_PROG" blkdiscard
  37 _require_btrfs_fs_feature "no_holes"
  38 _require_btrfs_mkfs_feature "no-holes"
  39 _require_log_writes
  40 _require_scratch
  41 _require_attrs
  42
  43 # We require a 4K nodesize to ensure the test isn't too slow
  44 if [ $(_get_page_size) -ne 4096 ]; then
  45         _notrun "This test doesn't support non-4K page size yet"
  46 fi
  47
  48 runtime=30
  49 nr_cpus=$("$here/src/feature" -o)
  50 # cap nr_cpus to 8 to avoid spending too much time on hosts with many cpus
  51 if [ $nr_cpus -gt 8 ]; then
  52         nr_cpus=8
  53 fi
  54 fsstress_args=$(_scale_fsstress_args -w -d $SCRATCH_MNT -n 99999 -p $nr_cpus \
  55                 $FSSTRESS_AVOID)
  56 _log_writes_init $SCRATCH_DEV
  57
  58 # Discard the whole devices so when some tree pointer is wrong, it won't point
  59 # to some older valid tree blocks, so we can detect it.
  60 $BLKDISCARD_PROG $LOGWRITES_DMDEV > /dev/null 2>&1
  61
  62 # Use no-holes to avoid warnings of missing file extent items (expected
  63 # for holes due to mix of buffered and direct IO writes).
  64 # And use 4K nodesize to bump tree height.
  65 _log_writes_mkfs -O no-holes -n 4k >> $seqres.full
  66 _log_writes_mount
  67
  68 $BTRFS_UTIL_PROG subvolume create $SCRATCH_MNT/src > /dev/null
  69 mkdir -p $SCRATCH_MNT/snapshots
  70 mkdir -p $SCRATCH_MNT/src/padding
  71
  72 snapshot_workload()
  73 {
  74         trap "wait; exit" SIGTERM
  75
  76         local i=0
  77         while true; do
  78                 $BTRFS_UTIL_PROG subvolume snapshot \
  79                         $SCRATCH_MNT/src $SCRATCH_MNT/snapshots/$i \
  80                         > /dev/null
  81                 # Do something small to make snapshots different
  82                 rm -f "$(_random_file $SCRATCH_MNT/src/padding)"
  83                 rm -f "$(_random_file $SCRATCH_MNT/src/padding)"
  84                 touch "$(_random_file $SCRATCH_MNT/src/padding)"
  85                 touch "$SCRATCH_MNT/src/padding/random_$RANDOM"
  86
  87                 i=$(($i + 1))
  88                 sleep 1
  89         done
  90 }
  91
  92 delete_workload()
  93 {
  94         trap "wait; exit" SIGTERM
  95
  96         while true; do
  97                 sleep 2
  98                 $BTRFS_UTIL_PROG subvolume delete \
  99                         "$(_random_file $SCRATCH_MNT/snapshots)" \
 100                         > /dev/null 2>&1
 101         done
 102 }
 103
 104 # Replay and check each fua/flush (specified by $2) point.
 105 #
 106 # Since dm-log-writes records bio sequentially, even just replaying a range
 107 # still needs to iterate all records before the end point.
 108 # When number of records grows, it will be unacceptably slow, thus we need
 109 # to use relay-log itself to trigger fsck, avoid unnecessary seek.
 110 log_writes_fast_replay_check()
 111 {
 112         local check_point=$1
 113         local blkdev=$2
 114         local fsck_command="$BTRFS_UTIL_PROG check $blkdev"
 115         local ret
 116
 117         [ -z "$check_point" -o -z "$blkdev" ] && _fail \
 118         "check_point and blkdev must be specified for log_writes_fast_replay_check"
 119
 120         $here/src/log-writes/replay-log --log $LOGWRITES_DEV \
 121                 --replay $blkdev --check $check_point --fsck "$fsck_command" \
 122                 &> $tmp.full_fsck
 123         ret=$?
 124         tail -n 150 $tmp.full_fsck >> $seqres.full
 125         [ $ret -ne 0 ] && _fail "fsck failed during replay"
 126 }
 127
 128 xattr_value=$(printf '%0.sX' $(seq 1 3800))
 129
 130 # Bumping tree height to level 2.
 131 for ((i = 0; i < 64; i++)); do
 132         touch "$SCRATCH_MNT/src/padding/$i"
 133         $SETFATTR_PROG -n 'user.x1' -v $xattr_value "$SCRATCH_MNT/src/padding/$i"
 134 done
 135
 136 _log_writes_mark prepare
 137
 138 snapshot_workload &
 139 pid1=$!
 140 delete_workload &
 141 pid2=$!
 142
 143 "$FSSTRESS_PROG" $fsstress_args >> $seqres.full &
 144 sleep $runtime
 145
 146 "$KILLALL_PROG" -q "$FSSTRESS_PROG" &> /dev/null
 147 kill $pid1 &> /dev/null
 148 kill $pid2 &> /dev/null
 149 wait
 150 _log_writes_unmount
 151 _log_writes_remove
 152
 153 log_writes_fast_replay_check fua "$SCRATCH_DEV"
 154
 155 echo "Silence is golden"
 156
 157 # success, all done
 158 status=0
 159 exit