2020-01-30 17:32:30 +01:00
|
|
|
#!/usr/bin/env python3
|
2018-07-02 21:46:30 +02:00
|
|
|
#
|
|
|
|
# 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
|
|
|
|
|
2020-03-31 02:00:11 +02:00
|
|
|
iotests.script_initialize(
|
|
|
|
supported_fmts=['qcow2', 'qcow', 'qed', 'vmdk', 'vhdx', 'raw'],
|
|
|
|
supported_platforms=['linux'],
|
|
|
|
)
|
2018-07-02 21:46:30 +02:00
|
|
|
|
|
|
|
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, \
|
2020-08-29 01:21:51 +02:00
|
|
|
iotests.FilePath('nbd.sock', base_dir=iotests.sock_dir) as nbd_sock_path, \
|
2018-07-02 21:46:30 +02:00
|
|
|
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')
|