mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Darrick J. Wong
ca9c677346
Create a file with a hole in the data fork and CoW reservations in the same region in the CoW fork. Ensure that SEEK_HOLE/DATA find the data. 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>
161 lines
5.5 KiB
Bash
Executable File
161 lines
5.5 KiB
Bash
Executable File
#! /bin/bash
|
|
# FS QA Test No. 421
|
|
#
|
|
# Test SEEK_HOLE/SEEK_DATA into a region that is marked CoW'd for
|
|
# speculative preallocation in the CoW fork and isn't backed by
|
|
# data fork extents.
|
|
#
|
|
# - Set a huge cowextsize hint.
|
|
# - Create a file "DD " (two data blocks, six hole blocks)
|
|
# - Reflink copy this file to a second file.
|
|
# - dio write to the first block of the second file to create a single
|
|
# large CoW reservation covering the whole file.
|
|
# - dio write to block 3, which should be a hole in the data fork.
|
|
# - Display the SEEK_HOLE/SEEK_DATA info for the second file to confirm
|
|
# that we see the data in blocks 0-1, the hole at block 2, the data
|
|
# at block 3, and the hole for the rest of the file.
|
|
#
|
|
# Basically we want to create a file with the following data/CoW forks:
|
|
#
|
|
# data: DD------
|
|
# cow: dddddddd
|
|
# ^--^---------- these blocks are dirty
|
|
#
|
|
# And then check that SEEK_HOLE and SEEK_DATA actually find that second
|
|
# dirty block even though we've never had a data fork extent mapping the
|
|
# second dirty block. We need the huge cowextsize so that the hole
|
|
# area receives preallocation in the CoW fork.
|
|
#
|
|
#-----------------------------------------------------------------------
|
|
# Copyright (c) 2017, Oracle and/or its affiliates. All Rights Reserved.
|
|
#
|
|
# This program is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU General Public License as
|
|
# published by the Free Software Foundation.
|
|
#
|
|
# This program is distributed in the hope that it would be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write the Free Software Foundation,
|
|
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
#-----------------------------------------------------------------------
|
|
|
|
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 -rf $tmp.*
|
|
}
|
|
|
|
# get standard environment, filters and checks
|
|
. ./common/rc
|
|
. ./common/filter
|
|
. ./common/reflink
|
|
|
|
# real QA test starts here
|
|
_supported_os Linux
|
|
_supported_fs xfs
|
|
_require_scratch_reflink
|
|
_require_cp_reflink
|
|
_require_xfs_io_command "cowextsize"
|
|
_require_xfs_io_command "fpunch"
|
|
|
|
rm -f $seqres.full
|
|
|
|
echo "Format and mount"
|
|
_scratch_mkfs > $seqres.full 2>&1
|
|
_scratch_mount >> $seqres.full 2>&1
|
|
|
|
testdir=$SCRATCH_MNT/test-$seq
|
|
mkdir $testdir
|
|
|
|
blksz=65536
|
|
nr=8
|
|
filesize=$((blksz * nr))
|
|
|
|
echo "Create the original files"
|
|
$XFS_IO_PROG -c "cowextsize" $testdir >> $seqres.full
|
|
$XFS_IO_PROG -c "cowextsize $filesize" $testdir >> $seqres.full
|
|
$XFS_IO_PROG -c "cowextsize" $testdir >> $seqres.full
|
|
$XFS_IO_PROG -f -c "pwrite -S 0x61 0 $((blksz * 2))" -c "truncate $filesize" -c "fpunch $((blksz * 2)) $((blksz * (nr - 2) ))" $testdir/file1 >> $seqres.full
|
|
_cp_reflink $testdir/file1 $testdir/file2 >> $seqres.full
|
|
$XFS_IO_PROG -f -c "pwrite -S 0 0 $filesize" -c "pwrite -S 0x61 0 $((blksz * 2))" $testdir/file3 >> $seqres.full
|
|
_scratch_cycle_mount
|
|
|
|
echo "Compare files"
|
|
md5sum $testdir/file1 | _filter_scratch
|
|
md5sum $testdir/file2 | _filter_scratch
|
|
md5sum $testdir/file3 | _filter_scratch
|
|
|
|
echo "CoW the shared part then write into the empty part" | tee -a $seqres.full
|
|
$XFS_IO_PROG -c "cowextsize" $testdir/file1 >> $seqres.full
|
|
$XFS_IO_PROG -c "cowextsize" $testdir/file2 >> $seqres.full
|
|
$XFS_IO_PROG -d -c "pwrite -S 0x63 0 $blksz" $testdir/file2 >> $seqres.full
|
|
$XFS_IO_PROG -d -c "pwrite -S 0x63 $((blksz * 3)) $blksz" $testdir/file2 >> $seqres.full
|
|
|
|
$XFS_IO_PROG -d -c "pwrite -S 0x63 0 $blksz" $testdir/file3 >> $seqres.full
|
|
$XFS_IO_PROG -d -c "pwrite -S 0x63 $((blksz * 3)) $blksz" $testdir/file3 >> $seqres.full
|
|
|
|
$XFS_IO_PROG -c "bmap -ev" -c "bmap -cv" $testdir/file1 >> $seqres.full 2>&1
|
|
$XFS_IO_PROG -c "bmap -ev" -c "bmap -cv" $testdir/file2 >> $seqres.full 2>&1
|
|
$XFS_IO_PROG -c "bmap -ev" -c "bmap -cv" $testdir/file3 >> $seqres.full 2>&1
|
|
|
|
echo "Seek holes and data in file1"
|
|
$XFS_IO_PROG -c "seek -a -r 0" $testdir/file1
|
|
echo "Seek holes and data in file2"
|
|
$XFS_IO_PROG -c "seek -a -r 0" $testdir/file2
|
|
|
|
echo "Compare files"
|
|
md5sum $testdir/file1 | _filter_scratch
|
|
md5sum $testdir/file2 | _filter_scratch
|
|
md5sum $testdir/file3 | _filter_scratch
|
|
|
|
echo "sync filesystem" | tee -a $seqres.full
|
|
sync
|
|
|
|
$XFS_IO_PROG -c "bmap -ev" -c "bmap -cv" $testdir/file1 >> $seqres.full 2>&1
|
|
$XFS_IO_PROG -c "bmap -ev" -c "bmap -cv" $testdir/file2 >> $seqres.full 2>&1
|
|
$XFS_IO_PROG -c "bmap -ev" -c "bmap -cv" $testdir/file3 >> $seqres.full 2>&1
|
|
|
|
echo "Seek holes and data in file1"
|
|
$XFS_IO_PROG -c "seek -a -r 0" $testdir/file1
|
|
echo "Seek holes and data in file2"
|
|
$XFS_IO_PROG -c "seek -a -r 0" $testdir/file2
|
|
|
|
echo "Compare files"
|
|
md5sum $testdir/file1 | _filter_scratch
|
|
md5sum $testdir/file2 | _filter_scratch
|
|
md5sum $testdir/file3 | _filter_scratch
|
|
|
|
echo "Remount" | tee -a $seqres.full
|
|
_scratch_cycle_mount
|
|
|
|
$XFS_IO_PROG -c "bmap -ev" -c "bmap -cv" $testdir/file1 >> $seqres.full 2>&1
|
|
$XFS_IO_PROG -c "bmap -ev" -c "bmap -cv" $testdir/file2 >> $seqres.full 2>&1
|
|
$XFS_IO_PROG -c "bmap -ev" -c "bmap -cv" $testdir/file3 >> $seqres.full 2>&1
|
|
|
|
echo "Seek holes and data in file1"
|
|
$XFS_IO_PROG -c "seek -a -r 0" $testdir/file1
|
|
echo "Seek holes and data in file2"
|
|
$XFS_IO_PROG -c "seek -a -r 0" $testdir/file2
|
|
|
|
echo "Compare files"
|
|
md5sum $testdir/file1 | _filter_scratch
|
|
md5sum $testdir/file2 | _filter_scratch
|
|
md5sum $testdir/file3 | _filter_scratch
|
|
|
|
# success, all done
|
|
status=0
|
|
exit
|