[qemu.git] / tests / qemu-iotests / 066

#!/bin/bash
#
# Test case for discarding preallocated zero clusters in qcow2
#
# Copyright (C) 2013 Red Hat, Inc.
#
# 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; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will 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, see <http://www.gnu.org/licenses/>.
#

# creator
[email protected]

seq="$(basename $0)"
echo "QA output created by $seq"

here="$PWD"
status=1	# failure is the default!

_cleanup()
{
	_cleanup_test_img
}
trap "_cleanup; exit \$status" 0 1 2 3 15

# get standard environment, filters and checks
. ./common.rc
. ./common.filter

# This tests qocw2-specific low-level functionality
_supported_fmt qcow2
_supported_proto generic
_supported_os Linux

IMGOPTS="compat=1.1"
IMG_SIZE=64M

echo
echo "=== Testing snapshotting an image with zero clusters ==="
echo
_make_test_img $IMG_SIZE
# Write some normal clusters, zero them (creating preallocated zero clusters)
# and discard those
$QEMU_IO -c "write 0 256k" -c "write -z 0 256k" -c "discard 0 256k" "$TEST_IMG" \
         | _filter_qemu_io
# Check the image (there shouldn't be any leaks)
_check_test_img

# success, all done
echo "*** done"
rm -f $seq.full
status=0
Commit	Line	Data
975a93c0 HR	1	#!/bin/bash
	2	#
	3	# Test case for discarding preallocated zero clusters in qcow2
	4	#
	5	# Copyright (C) 2013 Red Hat, Inc.
	6	#
	7	# This program is free software; you can redistribute it and/or modify
	8	# it under the terms of the GNU General Public License as published by
	9	# the Free Software Foundation; either version 2 of the License, or
	10	# (at your option) any later version.
	11	#
	12	# This program is distributed in the hope that it will be useful,
	13	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	# GNU General Public License for more details.
	16	#
	17	# You should have received a copy of the GNU General Public License
	18	# along with this program. If not, see <http://www.gnu.org/licenses/>.
	19	#
	20
	21	# creator
	22	[email protected]
	23
	24	seq="$(basename $0)"
	25	echo "QA output created by $seq"
	26
	27	here="$PWD"
975a93c0 HR	28	status=1 # failure is the default!
	29
	30	_cleanup()
	31	{
	32	_cleanup_test_img
	33	}
	34	trap "_cleanup; exit \$status" 0 1 2 3 15
	35
	36	# get standard environment, filters and checks
	37	. ./common.rc
	38	. ./common.filter
	39
	40	# This tests qocw2-specific low-level functionality
	41	_supported_fmt qcow2
	42	_supported_proto generic
	43	_supported_os Linux
	44
	45	IMGOPTS="compat=1.1"
	46	IMG_SIZE=64M
	47
	48	echo
	49	echo "=== Testing snapshotting an image with zero clusters ==="
	50	echo
	51	_make_test_img $IMG_SIZE
	52	# Write some normal clusters, zero them (creating preallocated zero clusters)
	53	# and discard those
	54	$QEMU_IO -c "write 0 256k" -c "write -z 0 256k" -c "discard 0 256k" "$TEST_IMG" \
	55	\| _filter_qemu_io
	56	# Check the image (there shouldn't be any leaks)
	57	_check_test_img
	58
	59	# success, all done
	60	echo "*** done"
	61	rm -f $seq.full
	62	status=0