| #!/usr/bin/env python3 |
| # group: rw |
| # |
| # Test cases for blockdev + IOThread interactions |
| # |
| # Copyright (C) 2019 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/>. |
| # |
| |
| import os |
| import time |
| import iotests |
| from iotests import qemu_img, QemuStorageDaemon |
| |
| image_len = 64 * 1024 * 1024 |
| |
| # Test for RHBZ#1782175 |
| class TestDirtyBitmapIOThread(iotests.QMPTestCase): |
| drive0_img = os.path.join(iotests.test_dir, 'drive0.img') |
| images = { 'drive0': drive0_img } |
| |
| def setUp(self): |
| for name in self.images: |
| qemu_img('create', '-f', iotests.imgfmt, |
| self.images[name], str(image_len)) |
| |
| self.vm = iotests.VM() |
| self.vm.add_object('iothread,id=iothread0') |
| |
| for name in self.images: |
| self.vm.add_blockdev('driver=file,filename=%s,node-name=file_%s' |
| % (self.images[name], name)) |
| self.vm.add_blockdev('driver=qcow2,file=file_%s,node-name=%s' |
| % (name, name)) |
| |
| self.vm.launch() |
| self.vm.qmp('x-blockdev-set-iothread', |
| node_name='drive0', iothread='iothread0', |
| force=True) |
| |
| def tearDown(self): |
| self.vm.shutdown() |
| for name in self.images: |
| os.remove(self.images[name]) |
| |
| def test_add_dirty_bitmap(self): |
| self.vm.cmd( |
| 'block-dirty-bitmap-add', |
| node='drive0', |
| name='bitmap1', |
| persistent=True, |
| ) |
| |
| |
| # Test for RHBZ#1746217 & RHBZ#1773517 |
| class TestNBDMirrorIOThread(iotests.QMPTestCase): |
| nbd_sock = os.path.join(iotests.sock_dir, 'nbd.sock') |
| drive0_img = os.path.join(iotests.test_dir, 'drive0.img') |
| mirror_img = os.path.join(iotests.test_dir, 'mirror.img') |
| images = { 'drive0': drive0_img, 'mirror': mirror_img } |
| |
| def setUp(self): |
| for name in self.images: |
| qemu_img('create', '-f', iotests.imgfmt, |
| self.images[name], str(image_len)) |
| |
| self.vm_src = iotests.VM(path_suffix='src') |
| self.vm_src.add_object('iothread,id=iothread0') |
| self.vm_src.add_blockdev('driver=file,filename=%s,node-name=file0' |
| % (self.drive0_img)) |
| self.vm_src.add_blockdev('driver=qcow2,file=file0,node-name=drive0') |
| self.vm_src.launch() |
| self.vm_src.qmp('x-blockdev-set-iothread', |
| node_name='drive0', iothread='iothread0', |
| force=True) |
| |
| self.vm_tgt = iotests.VM(path_suffix='tgt') |
| self.vm_tgt.add_object('iothread,id=iothread0') |
| self.vm_tgt.add_blockdev('driver=file,filename=%s,node-name=file0' |
| % (self.mirror_img)) |
| self.vm_tgt.add_blockdev('driver=qcow2,file=file0,node-name=drive0') |
| self.vm_tgt.launch() |
| self.vm_tgt.qmp('x-blockdev-set-iothread', |
| node_name='drive0', iothread='iothread0', |
| force=True) |
| |
| def tearDown(self): |
| self.vm_src.shutdown() |
| self.vm_tgt.shutdown() |
| for name in self.images: |
| os.remove(self.images[name]) |
| |
| def test_nbd_mirror(self): |
| self.vm_tgt.cmd( |
| 'nbd-server-start', |
| addr={ |
| 'type': 'unix', |
| 'data': { 'path': self.nbd_sock } |
| } |
| ) |
| |
| self.vm_tgt.cmd( |
| 'nbd-server-add', |
| device='drive0', |
| writable=True |
| ) |
| |
| self.vm_src.cmd( |
| 'drive-mirror', |
| device='drive0', |
| target='nbd+unix:///drive0?socket=' + self.nbd_sock, |
| sync='full', |
| mode='existing', |
| speed=64*1024*1024, |
| job_id='j1' |
| ) |
| |
| self.vm_src.event_wait(name="BLOCK_JOB_READY") |
| |
| |
| # Test for RHBZ#1779036 |
| class TestExternalSnapshotAbort(iotests.QMPTestCase): |
| drive0_img = os.path.join(iotests.test_dir, 'drive0.img') |
| snapshot_img = os.path.join(iotests.test_dir, 'snapshot.img') |
| images = { 'drive0': drive0_img, 'snapshot': snapshot_img } |
| |
| def setUp(self): |
| for name in self.images: |
| qemu_img('create', '-f', iotests.imgfmt, |
| self.images[name], str(image_len)) |
| |
| self.vm = iotests.VM() |
| self.vm.add_object('iothread,id=iothread0') |
| self.vm.add_blockdev('driver=file,filename=%s,node-name=file0' |
| % (self.drive0_img)) |
| self.vm.add_blockdev('driver=qcow2,file=file0,node-name=drive0') |
| self.vm.launch() |
| self.vm.qmp('x-blockdev-set-iothread', |
| node_name='drive0', iothread='iothread0', |
| force=True) |
| |
| def tearDown(self): |
| self.vm.shutdown() |
| for name in self.images: |
| os.remove(self.images[name]) |
| |
| def test_external_snapshot_abort(self): |
| # Use a two actions transaction with a bogus values on the second |
| # one to trigger an abort of the transaction. |
| result = self.vm.qmp('transaction', actions=[ |
| { |
| 'type': 'blockdev-snapshot-sync', |
| 'data': { 'node-name': 'drive0', |
| 'snapshot-file': self.snapshot_img, |
| 'snapshot-node-name': 'snap1', |
| 'mode': 'absolute-paths', |
| 'format': 'qcow2' } |
| }, |
| { |
| 'type': 'blockdev-snapshot-sync', |
| 'data': { 'node-name': 'drive0', |
| 'snapshot-file': '/fakesnapshot', |
| 'snapshot-node-name': 'snap2', |
| 'mode': 'absolute-paths', |
| 'format': 'qcow2' } |
| }, |
| ]) |
| |
| # Crashes on failure, we expect this error. |
| self.assert_qmp(result, 'error/class', 'GenericError') |
| |
| |
| # Test for RHBZ#1782111 |
| class TestBlockdevBackupAbort(iotests.QMPTestCase): |
| drive0_img = os.path.join(iotests.test_dir, 'drive0.img') |
| drive1_img = os.path.join(iotests.test_dir, 'drive1.img') |
| snap0_img = os.path.join(iotests.test_dir, 'snap0.img') |
| snap1_img = os.path.join(iotests.test_dir, 'snap1.img') |
| images = { 'drive0': drive0_img, |
| 'drive1': drive1_img, |
| 'snap0': snap0_img, |
| 'snap1': snap1_img } |
| |
| def setUp(self): |
| for name in self.images: |
| qemu_img('create', '-f', iotests.imgfmt, |
| self.images[name], str(image_len)) |
| |
| self.vm = iotests.VM() |
| self.vm.add_object('iothread,id=iothread0') |
| self.vm.add_device('virtio-scsi,iothread=iothread0') |
| |
| for name in self.images: |
| self.vm.add_blockdev('driver=file,filename=%s,node-name=file_%s' |
| % (self.images[name], name)) |
| self.vm.add_blockdev('driver=qcow2,file=file_%s,node-name=%s' |
| % (name, name)) |
| |
| self.vm.add_device('scsi-hd,drive=drive0') |
| self.vm.add_device('scsi-hd,drive=drive1') |
| self.vm.launch() |
| |
| def tearDown(self): |
| self.vm.shutdown() |
| for name in self.images: |
| os.remove(self.images[name]) |
| |
| def test_blockdev_backup_abort(self): |
| # Use a two actions transaction with a bogus values on the second |
| # one to trigger an abort of the transaction. |
| result = self.vm.qmp('transaction', actions=[ |
| { |
| 'type': 'blockdev-backup', |
| 'data': { 'device': 'drive0', |
| 'target': 'snap0', |
| 'sync': 'full', |
| 'job-id': 'j1' } |
| }, |
| { |
| 'type': 'blockdev-backup', |
| 'data': { 'device': 'drive1', |
| 'target': 'snap1', |
| 'sync': 'full' } |
| }, |
| ]) |
| |
| # Hangs on failure, we expect this error. |
| self.assert_qmp(result, 'error/class', 'GenericError') |
| |
| # Test for RHBZ#2033626 |
| class TestYieldingAndTimers(iotests.QMPTestCase): |
| sock = os.path.join(iotests.sock_dir, 'nbd.sock') |
| qsd = None |
| |
| def setUp(self): |
| self.create_nbd_export() |
| |
| # Simple VM with an NBD block device connected to the NBD export |
| # provided by the QSD, and an (initially unused) iothread |
| self.vm = iotests.VM() |
| self.vm.add_object('iothread,id=iothr') |
| self.vm.add_blockdev('nbd,node-name=nbd,server.type=unix,' + |
| f'server.path={self.sock},export=exp,' + |
| 'reconnect-delay=1,open-timeout=1') |
| |
| self.vm.launch() |
| |
| def tearDown(self): |
| self.stop_nbd_export() |
| self.vm.shutdown() |
| |
| def test_timers_with_blockdev_del(self): |
| # The NBD BDS will have had an active open timer, because setUp() gave |
| # a positive value for @open-timeout. It should be gone once the BDS |
| # has been opened. |
| # (But there used to be a bug where it remained active, which will |
| # become important below.) |
| |
| # Stop and restart the NBD server, and do some I/O on the client to |
| # trigger a reconnect and start the reconnect delay timer |
| self.stop_nbd_export() |
| self.create_nbd_export() |
| |
| result = self.vm.qmp('human-monitor-command', |
| command_line='qemu-io nbd "write 0 512"') |
| self.assert_qmp(result, 'return', '') |
| |
| # Reconnect is done, so the reconnect delay timer should be gone. |
| # (This is similar to how the open timer should be gone after open, |
| # and similarly there used to be a bug where it was not gone.) |
| |
| # Delete the BDS to see whether both timers are gone. If they are not, |
| # they will remain active, fire later, and then access freed data. |
| # (Or, with "block/nbd: Assert there are no timers when closed" |
| # applied, the assertions added in that patch will fail.) |
| self.vm.cmd('blockdev-del', node_name='nbd') |
| |
| # Give the timers some time to fire (both have a timeout of 1 s). |
| # (Sleeping in an iotest may ring some alarm bells, but note that if |
| # the timing is off here, the test will just always pass. If we kill |
| # the VM too early, then we just kill the timers before they can fire, |
| # thus not see the error, and so the test will pass.) |
| time.sleep(2) |
| |
| def test_yield_in_iothread(self): |
| # Move the NBD node to the I/O thread; the NBD block driver should |
| # attach the connection's QIOChannel to that thread's AioContext, too |
| self.vm.cmd('x-blockdev-set-iothread', |
| node_name='nbd', iothread='iothr') |
| |
| # Do some I/O that will be throttled by the QSD, so that the network |
| # connection hopefully will yield here. When it is resumed, it must |
| # then be resumed in the I/O thread's AioContext. |
| result = self.vm.qmp('human-monitor-command', |
| command_line='qemu-io nbd "read 0 128K"') |
| self.assert_qmp(result, 'return', '') |
| |
| def create_nbd_export(self): |
| assert self.qsd is None |
| |
| # Export a throttled null-co BDS: Reads are throttled (max 64 kB/s), |
| # writes are not. |
| self.qsd = QemuStorageDaemon( |
| '--object', |
| 'throttle-group,id=thrgr,x-bps-read=65536,x-bps-read-max=65536', |
| |
| '--blockdev', |
| 'null-co,node-name=null,read-zeroes=true', |
| |
| '--blockdev', |
| 'throttle,node-name=thr,file=null,throttle-group=thrgr', |
| |
| '--nbd-server', |
| f'addr.type=unix,addr.path={self.sock}', |
| |
| '--export', |
| 'nbd,id=exp,node-name=thr,name=exp,writable=true' |
| ) |
| |
| def stop_nbd_export(self): |
| self.qsd.stop() |
| self.qsd = None |
| |
| if __name__ == '__main__': |
| iotests.main(supported_fmts=['qcow2'], |
| supported_protocols=['file'], |
| unsupported_imgopts=['compat']) |
