| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (C) 2019 SUSE Linux Products GmbH. All Rights Reserved. |
| # |
| # FS QA Test 182 |
| # |
| # Test if balance will report false ENOSPC error |
| # |
| # This is a long existing bug, caused by over-estimated metadata |
| # space_info::bytes_may_use. |
| # |
| # There is one proposed patch for btrfs-progs to fix it, titled: |
| # "btrfs-progs: balance: Sync the fs before balancing metadata chunks" |
| # |
| seq=`basename $0` |
| seqres=$RESULT_DIR/$seq |
| echo "QA output created by $seq" |
| |
| here=`pwd` |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| cd / |
| rm -f $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| |
| # remove previous $seqres.full before test |
| rm -f $seqres.full |
| |
| # real QA test starts here |
| |
| # Modify as appropriate. |
| _supported_fs btrfs |
| _require_scratch |
| |
| nr_files=1024 |
| |
| _scratch_mkfs > /dev/null |
| _scratch_mount |
| |
| $BTRFS_UTIL_PROG subvolume create "$SCRATCH_MNT/subvol" > /dev/null |
| |
| # Create some small files to take up enough metadata reserved space |
| for ((i = 0; i < $nr_files; i++)) do |
| _pwrite_byte 0xcd 0 1K "$SCRATCH_MNT/subvol/file_$i" > /dev/null |
| done |
| |
| _run_btrfs_balance_start -m $SCRATCH_MNT >> $seqres.full |
| |
| # success, all done |
| echo "Silence is golden" |
| status=0 |
| exit |
