mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Darrick J. Wong
c8a13e5303
These tests examine the behavior of advanced and tricky copy on write situations. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
102 lines
3.2 KiB
Bash
Executable File
102 lines
3.2 KiB
Bash
Executable File
#! /bin/bash
|
|
# FS QA Test No. 185
|
|
#
|
|
# Ensuring that copy on write in buffered mode works when the CoW
|
|
# range originally covers multiple extents.
|
|
# - Create two files
|
|
# - Reflink the odd blocks of the first file into a third file.
|
|
# - Reflink the even blocks of the second file into the third file.
|
|
# - CoW across the halfway mark.
|
|
# - Check that the files are now different where we say they're different.
|
|
#
|
|
#-----------------------------------------------------------------------
|
|
# Copyright (c) 2015, 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 "$tmp".* "$TESTDIR"
|
|
}
|
|
|
|
# get standard environment, filters and checks
|
|
. ./common/rc
|
|
. ./common/filter
|
|
. ./common/reflink
|
|
|
|
# real QA test starts here
|
|
_supported_os Linux
|
|
_require_scratch_reflink
|
|
|
|
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"
|
|
rm -rf $TESTDIR
|
|
mkdir $TESTDIR
|
|
|
|
echo "Create the original files"
|
|
BLKSZ=65536
|
|
NR=64
|
|
_pwrite_byte 0x61 0 $((BLKSZ * NR)) "$TESTDIR/file1" >> "$seqres.full"
|
|
_pwrite_byte 0x62 0 $((BLKSZ * NR)) "$TESTDIR/file2" >> "$seqres.full"
|
|
seq 0 2 $((NR-1)) | while read f; do
|
|
_reflink_range "$TESTDIR/file1" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
|
|
_pwrite_byte 0x61 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
|
|
done
|
|
seq 1 2 $NR | while read f; do
|
|
_reflink_range "$TESTDIR/file2" $((BLKSZ * f)) "$TESTDIR/file3" $((BLKSZ * f)) $BLKSZ >> "$seqres.full"
|
|
_pwrite_byte 0x62 $((BLKSZ * f)) $BLKSZ "$TESTDIR/file3.chk" >> "$seqres.full"
|
|
done
|
|
_scratch_remount
|
|
|
|
echo "Compare files"
|
|
md5sum "$TESTDIR/file1" | _filter_scratch
|
|
md5sum "$TESTDIR/file2" | _filter_scratch
|
|
md5sum "$TESTDIR/file3" | _filter_scratch
|
|
md5sum "$TESTDIR/file3.chk" | _filter_scratch
|
|
|
|
echo "CoW across the transition"
|
|
_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3" >> "$seqres.full"
|
|
_pwrite_byte 0x63 $((BLKSZ * NR / 4)) $((BLKSZ * NR / 2)) "$TESTDIR/file3.chk" >> "$seqres.full"
|
|
_scratch_remount
|
|
|
|
echo "Compare files"
|
|
md5sum "$TESTDIR/file1" | _filter_scratch
|
|
md5sum "$TESTDIR/file2" | _filter_scratch
|
|
md5sum "$TESTDIR/file3" | _filter_scratch
|
|
md5sum "$TESTDIR/file3.chk" | _filter_scratch
|
|
|
|
echo "Check for damage"
|
|
umount "$SCRATCH_MNT"
|
|
_check_scratch_fs
|
|
|
|
# success, all done
|
|
status=0
|
|
exit
|