Files
apfstests/tests/btrfs/031
T
Eric Sandeen 27d077ec0b common: use mount/umount helpers everywhere
Replace every explicit mount/umount of scratch or test devices with
helper functions. This allows the next patch to add in hooks to these
functions in order to set up & tear down overlayfs on every mount/umount

(also adds _test_unmount(), which didn't exist prior)

[Eryu Guan rebased the patch agains latest master and replaced more
mount/umount with helpers]

Signed-off-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eric Sandeen <esandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2015-12-21 18:07:43 +11:00

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#! /bin/bash
# FS QA Test No. 031
#
# Testing cross-subvolume sparse copy on btrfs
# - Create two subvolumes, mount one of them
# - Create a file on each (sub/root)volume,
# reflink them on the other volumes
# - Change one original and two reflinked files
# - Move reflinked files between subvolumes
#
#-----------------------------------------------------------------------
# Copyright (c) 2014, 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()
{
_scratch_unmount
rm -rf $TESTDIR1
rm -rf $TESTDIR2
$BTRFS_UTIL_PROG subvolume delete $SUBVOL1 >> $seqres.full
$BTRFS_UTIL_PROG subvolume delete $SUBVOL2 >> $seqres.full
cd /
rm -f $tmp.*
}
# get standard environment, filters and checks
. ./common/rc
. ./common/filter
. ./common/reflink
# real QA test starts here
_supported_fs btrfs
_supported_os Linux
_require_test
_require_scratch
_require_cp_reflink
_checksum_files() {
for F in file1 file2 file3
do
echo "$F:"
for D in $TESTDIR1 $SCRATCH_MNT $SUBVOL2
do
_md5_checksum $D/$F
done
done
}
TESTDIR1=$TEST_DIR/test-$seq-1
TESTDIR2=$TEST_DIR/test-$seq-2
SUBVOL1=$TEST_DIR/subvol-$seq-1
SUBVOL2=$TEST_DIR/subvol-$seq-2
_scratch_unmount 2>/dev/null
rm -rf $seqres.full
rm -rf $TESTDIR1 $TESTDIR2
$BTRFS_UTIL_PROG subvolume delete $SUBVOL1 >/dev/null 2>&1
$BTRFS_UTIL_PROG subvolume delete $SUBVOL2 >/dev/null 2>&1
mkdir $TESTDIR1
mkdir $TESTDIR2
$BTRFS_UTIL_PROG subvolume create $SUBVOL1 >> $seqres.full
$BTRFS_UTIL_PROG subvolume create $SUBVOL2 >> $seqres.full
_mount -t btrfs -o subvol=subvol-$seq-1 $TEST_DEV $SCRATCH_MNT
echo "Create initial files"
# TESTDIR1/file1 is very small and will be inlined
$XFS_IO_PROG -f -c 'pwrite -S 0x61 0 10' $TESTDIR1/file1 \
>> $seqres.full
$XFS_IO_PROG -f -c 'pwrite -S 0x62 0 13000' $SCRATCH_MNT/file2 \
>> $seqres.full
$XFS_IO_PROG -f -c 'pwrite -S 0x63 0 17000' $SUBVOL2/file3 \
>> $seqres.full
echo "Create reflinks to the initial files on other subvolumes"
cp --reflink=always $TESTDIR1/file1 $SUBVOL1
cp --reflink=always $TESTDIR1/file1 $SUBVOL2
cp --reflink=always $SUBVOL1/file2 $TESTDIR1/
cp --reflink=always $SUBVOL1/file2 $SUBVOL2
cp --reflink=always $SUBVOL2/file3 $TESTDIR1/
cp --reflink=always $SUBVOL2/file3 $SUBVOL1
echo "Verify the reflinks"
_verify_reflink $SCRATCH_MNT/file2 $TESTDIR1/file2
_verify_reflink $SCRATCH_MNT/file2 $SUBVOL2/file2
_verify_reflink $SUBVOL2/file3 $TESTDIR1/file3
_verify_reflink $SUBVOL2/file3 $SCRATCH_MNT/file3
echo "Verify the file contents:"
_checksum_files
echo -e "---\nOverwrite some files with new content"
$XFS_IO_PROG -c 'pwrite -S 0x64 0 20' $TESTDIR1/file1 >> $seqres.full
$XFS_IO_PROG -c 'pwrite -S 0x66 0 21000' $SUBVOL2/file2 >> $seqres.full
$XFS_IO_PROG -c 'pwrite -S 0x65 5000 5000' $SCRATCH_MNT/file3 \
>> $seqres.full
echo -n "Verify that non-overwritten reflinks "
echo "still have the same data blocks"
_verify_reflink $TESTDIR1/file2 $SCRATCH_MNT/file2
_verify_reflink $TESTDIR1/file3 $SUBVOL2/file3
echo "Verify the file contents:"
_checksum_files
echo -e "---\nShuffle files between directories"
mv $TESTDIR1/file* $TESTDIR2
mv $SCRATCH_MNT/file* $TESTDIR1/
mv $SUBVOL2/file* $SCRATCH_MNT/
mv $TESTDIR2/file* $SUBVOL2/
# No _verify_reflink here as data is copied when moving files
# between subvols
echo "Verify the file contents:"
_checksum_files
# success, all done
status=0
exit