mirror of https://github.com/proxmox/mirror_qemu
iotests: Test block-export-* QMP interface
Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20200924152717.287415-32-kwolf@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>master
Kevin Wolf
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#!/usr/bin/env python3
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#
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# Copyright (C) 2020 Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Creator/Owner: Kevin Wolf <kwolf@redhat.com>
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#
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# Test the block export QAPI interfaces
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import iotests
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import os
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# Need a writable image format (but not vpc, which rounds the image size, nor
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# luks which requires special command lines)
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iotests.script_initialize(
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supported_fmts=['generic'],
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unsupported_fmts=['luks', 'vpc'],
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supported_platforms=['linux'],
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)
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with iotests.FilePath('image') as img, \
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iotests.FilePath('socket', base_dir=iotests.sock_dir) as socket, \
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iotests.VM() as vm:
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iotests.qemu_img('create', '-f', iotests.imgfmt, img, '64M')
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iotests.qemu_io_log('-f', iotests.imgfmt, '-c', 'write -P 0x11 0 4k', img)
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iotests.log('=== Launch VM ===')
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virtio_scsi_device = iotests.get_virtio_scsi_device()
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vm.add_object('iothread,id=iothread0')
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vm.add_blockdev(f'file,filename={img},node-name=file')
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vm.add_blockdev(f'{iotests.imgfmt},file=file,node-name=fmt')
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vm.add_blockdev('raw,file=file,node-name=ro,read-only=on')
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vm.add_device(f'id=scsi0,driver={virtio_scsi_device},iothread=iothread0')
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vm.launch()
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vm.qmp_log('nbd-server-start',
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addr={'type': 'unix', 'data': {'path': socket}},
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filters=(iotests.filter_qmp_testfiles, ))
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vm.qmp_log('query-block-exports')
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iotests.log('\n=== Create a read-only NBD export ===')
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vm.qmp_log('block-export-add', id='export0', type='nbd', node_name='fmt')
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vm.qmp_log('query-block-exports')
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iotests.qemu_nbd_list_log('-k', socket)
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iotests.log('\n=== Try a few invalid things ===')
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vm.qmp_log('block-export-add', id='#invalid', type='nbd', node_name='fmt')
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vm.qmp_log('block-export-add', id='export0', type='nbd', node_name='fmt')
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vm.qmp_log('block-export-add', id='export1', type='nbd', node_name='ro',
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writable=True)
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vm.qmp_log('block-export-del', id='export1')
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vm.qmp_log('query-block-exports')
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iotests.log('\n=== Move export to an iothread ===')
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vm.qmp_log('device_add', id='sda', driver='scsi-hd', drive='fmt')
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vm.qmp_log('query-block-exports')
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iotests.qemu_nbd_list_log('-k', socket)
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iotests.log('\n=== Add a writable export ===')
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# This fails because share-rw=off
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vm.qmp_log('block-export-add', id='export1', type='nbd', node_name='fmt',
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name='export1', writable=True, writethrough=True,
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description='This is the writable second export')
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vm.qmp_log('device_del', id='sda')
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event = vm.event_wait(name="DEVICE_DELETED",
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match={'data': {'device': 'sda'}})
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iotests.log(event, filters=[iotests.filter_qmp_event])
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vm.qmp_log('device_add', id='sda', driver='scsi-hd', drive='fmt',
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share_rw=True)
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# Now it should work
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vm.qmp_log('block-export-add', id='export1', type='nbd', node_name='fmt',
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name='export1', writable=True, writethrough=True,
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description='This is the writable second export')
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vm.qmp_log('query-block-exports')
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iotests.qemu_nbd_list_log('-k', socket)
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iotests.log('\n=== Connect qemu-io to export1, try removing exports ===')
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nbd_url = f'nbd+unix:///export1?socket={socket}'
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qemu_io = iotests.QemuIoInteractive('-f', 'raw', nbd_url)
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iotests.log(qemu_io.cmd('read -P 0x11 0 4k'),
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filters=[iotests.filter_qemu_io])
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iotests.log(qemu_io.cmd('write -P 0x22 4k 4k'),
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filters=[iotests.filter_qemu_io])
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vm.qmp_log('block-export-del', id='export1')
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vm.qmp_log('block-export-del', id='export0')
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iotests.log(vm.get_qmp_events_filtered())
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qemu_io.close()
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vm.qmp_log('query-block-exports')
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iotests.qemu_nbd_list_log('-k', socket)
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iotests.log('\n=== Connect qemu-io again, try force removing ===')
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qemu_io = iotests.QemuIoInteractive('-f', 'raw', nbd_url)
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vm.qmp_log('block-export-del', id='export1')
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vm.qmp_log('block-export-del', id='export1', mode='hard')
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# This should fail now
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iotests.log(qemu_io.cmd('read -P 0x11 0 4k'))
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qemu_io.close()
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vm.qmp_log('query-block-exports')
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iotests.qemu_nbd_list_log('-k', socket)
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iotests.log('\n=== Shut down QEMU ===')
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vm.shutdown()
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@ -0,0 +1,124 @@
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wrote 4096/4096 bytes at offset 0
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4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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=== Launch VM ===
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{"execute": "nbd-server-start", "arguments": {"addr": {"data": {"path": "SOCK_DIR/PID-socket"}, "type": "unix"}}}
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{"return": {}}
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{"execute": "query-block-exports", "arguments": {}}
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{"return": []}
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=== Create a read-only NBD export ===
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{"execute": "block-export-add", "arguments": {"id": "export0", "node-name": "fmt", "type": "nbd"}}
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{"return": {}}
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{"execute": "query-block-exports", "arguments": {}}
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{"return": [{"id": "export0", "node-name": "fmt", "shutting-down": false, "type": "nbd"}]}
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exports available: 1
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export: 'fmt'
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size: 67108864
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flags: 0x58f ( readonly flush fua df multi cache )
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min block: XXX
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opt block: XXX
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max block: XXX
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available meta contexts: 1
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base:allocation
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=== Try a few invalid things ===
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{"execute": "block-export-add", "arguments": {"id": "#invalid", "node-name": "fmt", "type": "nbd"}}
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{"error": {"class": "GenericError", "desc": "Invalid block export id"}}
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{"execute": "block-export-add", "arguments": {"id": "export0", "node-name": "fmt", "type": "nbd"}}
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{"error": {"class": "GenericError", "desc": "Block export id 'export0' is already in use"}}
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{"execute": "block-export-add", "arguments": {"id": "export1", "node-name": "ro", "type": "nbd", "writable": true}}
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{"error": {"class": "GenericError", "desc": "Cannot export read-only node as writable"}}
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{"execute": "block-export-del", "arguments": {"id": "export1"}}
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{"error": {"class": "GenericError", "desc": "Export 'export1' is not found"}}
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{"execute": "query-block-exports", "arguments": {}}
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{"return": [{"id": "export0", "node-name": "fmt", "shutting-down": false, "type": "nbd"}]}
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=== Move export to an iothread ===
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{"execute": "device_add", "arguments": {"drive": "fmt", "driver": "scsi-hd", "id": "sda"}}
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{"return": {}}
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{"execute": "query-block-exports", "arguments": {}}
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{"return": [{"id": "export0", "node-name": "fmt", "shutting-down": false, "type": "nbd"}]}
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exports available: 1
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export: 'fmt'
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size: 67108864
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flags: 0x58f ( readonly flush fua df multi cache )
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min block: XXX
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opt block: XXX
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max block: XXX
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available meta contexts: 1
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base:allocation
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=== Add a writable export ===
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{"execute": "block-export-add", "arguments": {"description": "This is the writable second export", "id": "export1", "name": "export1", "node-name": "fmt", "type": "nbd", "writable": true, "writethrough": true}}
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{"error": {"class": "GenericError", "desc": "Conflicts with use by sda as 'root', which does not allow 'write' on fmt"}}
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{"execute": "device_del", "arguments": {"id": "sda"}}
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{"return": {}}
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{"data": {"device": "sda", "path": "/machine/peripheral/sda"}, "event": "DEVICE_DELETED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}
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{"execute": "device_add", "arguments": {"drive": "fmt", "driver": "scsi-hd", "id": "sda", "share-rw": true}}
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{"return": {}}
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{"execute": "block-export-add", "arguments": {"description": "This is the writable second export", "id": "export1", "name": "export1", "node-name": "fmt", "type": "nbd", "writable": true, "writethrough": true}}
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{"return": {}}
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{"execute": "query-block-exports", "arguments": {}}
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{"return": [{"id": "export1", "node-name": "fmt", "shutting-down": false, "type": "nbd"}, {"id": "export0", "node-name": "fmt", "shutting-down": false, "type": "nbd"}]}
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exports available: 2
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export: 'fmt'
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size: 67108864
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flags: 0x58f ( readonly flush fua df multi cache )
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min block: XXX
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opt block: XXX
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max block: XXX
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available meta contexts: 1
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base:allocation
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export: 'export1'
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description: This is the writable second export
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size: 67108864
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flags: 0xced ( flush fua trim zeroes df cache fast-zero )
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min block: XXX
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opt block: XXX
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max block: XXX
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available meta contexts: 1
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base:allocation
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=== Connect qemu-io to export1, try removing exports ===
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read 4096/4096 bytes at offset 0
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4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 4096/4096 bytes at offset 4096
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4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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{"execute": "block-export-del", "arguments": {"id": "export1"}}
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{"error": {"class": "GenericError", "desc": "export 'export1' still in use"}}
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{"execute": "block-export-del", "arguments": {"id": "export0"}}
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{"return": {}}
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[{"data": {"id": "export0"}, "event": "BLOCK_EXPORT_DELETED", "timestamp": {"microseconds": "USECS", "seconds": "SECS"}}]
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{"execute": "query-block-exports", "arguments": {}}
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{"return": [{"id": "export1", "node-name": "fmt", "shutting-down": false, "type": "nbd"}]}
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exports available: 1
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export: 'export1'
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description: This is the writable second export
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size: 67108864
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flags: 0xced ( flush fua trim zeroes df cache fast-zero )
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min block: XXX
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opt block: XXX
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max block: XXX
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available meta contexts: 1
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base:allocation
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=== Connect qemu-io again, try force removing ===
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{"execute": "block-export-del", "arguments": {"id": "export1"}}
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{"error": {"class": "GenericError", "desc": "export 'export1' still in use"}}
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{"execute": "block-export-del", "arguments": {"id": "export1", "mode": "hard"}}
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{"return": {}}
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read failed: Input/output error
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{"execute": "query-block-exports", "arguments": {}}
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{"return": []}
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exports available: 0
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=== Shut down QEMU ===
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@ -314,3 +314,4 @@
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303 rw quick
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304 rw quick
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305 rw quick
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307 rw quick export
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