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reflink: more CoW tests for reflink and dedupe

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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>
This commit is contained in:
Darrick J. Wong
2015-12-21 18:27:04 +11:00
committed by Dave Chinner
parent 877d1daada
commit c8a13e5303
35 changed files with 2022 additions and 0 deletions
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tests/generic/190
Executable
+96
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#! /bin/bash
# FS QA Test No. 190
#
# Ensuring that copy on write in direct-io mode works when the CoW
# range originally covers multiple extents, some holes, some not.
# - Create a file and truncate a second file.
# - Reflink the odd blocks of the first file into the second file.
# - directio CoW across the halfway mark, starting with the unwritten extent.
# - 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
_require_xfs_io_command "falloc"
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"
$XFS_IO_PROG -f -c "truncate $((BLKSZ * NR))" "$TESTDIR/file3" >> "$seqres.full"
_pwrite_byte 0x00 0 $((BLKSZ * NR)) "$TESTDIR/file3.chk" >> "$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" >> "$seqres.full"
done
_scratch_remount
echo "Compare files"
md5sum "$TESTDIR/file1" | _filter_scratch
md5sum "$TESTDIR/file3" | _filter_scratch
md5sum "$TESTDIR/file3.chk" | _filter_scratch
echo "directio CoW across the transition"
"$XFS_IO_PROG" -d -f -c "pwrite -S 0x63 -b $((BLKSZ * NR / 2)) $((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 "$TESTDIR/file3" | _filter_scratch
md5sum "$TESTDIR/file3.chk" | _filter_scratch
echo "Check for damage"
umount "$SCRATCH_MNT"
_check_scratch_fs
# success, all done
status=0
exit