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Diffstat (limited to 'tests/qemu-iotests/222')
| -rw-r--r-- | tests/qemu-iotests/222 | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/tests/qemu-iotests/222 b/tests/qemu-iotests/222 new file mode 100644 index 0000000000..ff3bfc1470 --- /dev/null +++ b/tests/qemu-iotests/222 @@ -0,0 +1,155 @@ +#!/usr/bin/env python +# +# This test covers the basic fleecing workflow, which provides a +# point-in-time snapshot of a node that can be queried over NBD. +# +# Copyright (C) 2018 Red Hat, Inc. +# John helped, too. +# +# 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/Owner: John Snow <jsnow@redhat.com> + +import iotests +from iotests import log, qemu_img, qemu_io, qemu_io_silent + +iotests.verify_platform(['linux']) + +patterns = [("0x5d", "0", "64k"), + ("0xd5", "1M", "64k"), + ("0xdc", "32M", "64k"), + ("0xcd", "0x3ff0000", "64k")] # 64M - 64K + +overwrite = [("0xab", "0", "64k"), # Full overwrite + ("0xad", "0x00f8000", "64k"), # Partial-left (1M-32K) + ("0x1d", "0x2008000", "64k"), # Partial-right (32M+32K) + ("0xea", "0x3fe0000", "64k")] # Adjacent-left (64M - 128K) + +zeroes = [("0", "0x00f8000", "32k"), # Left-end of partial-left (1M-32K) + ("0", "0x2010000", "32k"), # Right-end of partial-right (32M+64K) + ("0", "0x3fe0000", "64k")] # overwrite[3] + +remainder = [("0xd5", "0x108000", "32k"), # Right-end of partial-left [1] + ("0xdc", "32M", "32k"), # Left-end of partial-right [2] + ("0xcd", "0x3ff0000", "64k")] # patterns[3] + +with iotests.FilePath('base.img') as base_img_path, \ + iotests.FilePath('fleece.img') as fleece_img_path, \ + iotests.FilePath('nbd.sock') as nbd_sock_path, \ + iotests.VM() as vm: + + log('--- Setting up images ---') + log('') + + assert qemu_img('create', '-f', iotests.imgfmt, base_img_path, '64M') == 0 + assert qemu_img('create', '-f', "qcow2", fleece_img_path, '64M') == 0 + + for p in patterns: + qemu_io('-f', iotests.imgfmt, + '-c', 'write -P%s %s %s' % p, base_img_path) + + log('Done') + + log('') + log('--- Launching VM ---') + log('') + + vm.add_drive(base_img_path) + vm.launch() + log('Done') + + log('') + log('--- Setting up Fleecing Graph ---') + log('') + + src_node = "drive0" + tgt_node = "fleeceNode" + + # create tgt_node backed by src_node + log(vm.qmp("blockdev-add", **{ + "driver": "qcow2", + "node-name": tgt_node, + "file": { + "driver": "file", + "filename": fleece_img_path, + }, + "backing": src_node, + })) + + # Establish COW from source to fleecing node + log(vm.qmp("blockdev-backup", + device=src_node, + target=tgt_node, + sync="none")) + + log('') + log('--- Setting up NBD Export ---') + log('') + + nbd_uri = 'nbd+unix:///%s?socket=%s' % (tgt_node, nbd_sock_path) + log(vm.qmp("nbd-server-start", + **{"addr": { "type": "unix", + "data": { "path": nbd_sock_path } } })) + + log(vm.qmp("nbd-server-add", device=tgt_node)) + + log('') + log('--- Sanity Check ---') + log('') + + for p in (patterns + zeroes): + cmd = "read -P%s %s %s" % p + log(cmd) + assert qemu_io_silent('-r', '-f', 'raw', '-c', cmd, nbd_uri) == 0 + + log('') + log('--- Testing COW ---') + log('') + + for p in overwrite: + cmd = "write -P%s %s %s" % p + log(cmd) + log(vm.hmp_qemu_io(src_node, cmd)) + + log('') + log('--- Verifying Data ---') + log('') + + for p in (patterns + zeroes): + cmd = "read -P%s %s %s" % p + log(cmd) + assert qemu_io_silent('-r', '-f', 'raw', '-c', cmd, nbd_uri) == 0 + + log('') + log('--- Cleanup ---') + log('') + + log(vm.qmp('block-job-cancel', device=src_node)) + log(vm.event_wait('BLOCK_JOB_CANCELLED'), + filters=[iotests.filter_qmp_event]) + log(vm.qmp('nbd-server-stop')) + log(vm.qmp('blockdev-del', node_name=tgt_node)) + vm.shutdown() + + log('') + log('--- Confirming writes ---') + log('') + + for p in (overwrite + remainder): + cmd = "read -P%s %s %s" % p + log(cmd) + assert qemu_io_silent(base_img_path, '-c', cmd) == 0 + + log('') + log('Done') |