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https://github.com/linux-apfs/apfstests.git
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Darrick J. Wong
8dfe4562e3
Test a regression in XFS where we blow out a transaction reservation if we create a big file, share every other block, and delete the first file. There's nothing particularly fs-specific about this stress test, so put it in generic. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com>
95 lines
2.7 KiB
Bash
Executable File
95 lines
2.7 KiB
Bash
Executable File
#! /bin/bash
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# FS QA Test No. 447
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#
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# See how well we handle deleting a file with a million refcount extents.
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2017, Oracle and/or its affiliates. All Rights Reserved.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it would be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write the Free Software Foundation,
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#-----------------------------------------------------------------------
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seq=`basename "$0"`
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seqres="$RESULT_DIR/$seq"
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f "$tmp".* $testdir/file1
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}
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# get standard environment, filters and checks
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. ./common/rc
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. ./common/filter
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. ./common/attr
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. ./common/reflink
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# real QA test starts here
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_supported_os Linux
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_require_scratch_reflink
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_require_cp_reflink
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_require_test_program "punch-alternating"
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rm -f "$seqres.full"
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echo "Format and mount"
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_scratch_mkfs > "$seqres.full" 2>&1
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_scratch_mount >> "$seqres.full" 2>&1
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testdir="$SCRATCH_MNT/test-$seq"
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mkdir "$testdir"
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# Setup for one million blocks, but we'll accept stress testing down to
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# 2^17 blocks... that should be plenty for anyone.
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fnr=20
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free_blocks=$(stat -f -c '%a' "$testdir")
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blksz=$(_get_block_size "$testdir")
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space_avail=$((free_blocks * blksz))
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calc_space() {
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blocks_needed=$(( 2 ** (fnr + 1) ))
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space_needed=$((blocks_needed * blksz * 5 / 4))
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}
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calc_space
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while test $space_needed -gt $space_avail; do
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fnr=$((fnr - 1))
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calc_space
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done
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test $fnr -lt 17 && _notrun "Insufficient space for stress test; would only create $blocks_needed extents ($space_needed/$space_avail blocks)."
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echo "Create a many-block file"
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echo "creating $blocks_needed blocks..." >> "$seqres.full"
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$XFS_IO_PROG -f -c "pwrite -S 0x61 -b 4194304 0 $((2 ** (fnr + 1) * blksz))" "$testdir/file1" >> "$seqres.full"
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echo "Reflinking file"
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_cp_reflink $testdir/file1 $testdir/file2
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echo "Punch file2"
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echo "Punching file2..." >> "$seqres.full"
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"$here/src/punch-alternating" "$testdir/file2" >> "$seqres.full"
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echo "...done" >> "$seqres.full"
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_scratch_cycle_mount
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echo "Delete file1"
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rm -rf $testdir/file1
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# success, all done
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status=0
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exit
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