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[PULL 5/9] iotests: Test two stream jobs in a single iothread
From: |
Kevin Wolf |
Subject: |
[PULL 5/9] iotests: Test two stream jobs in a single iothread |
Date: |
Tue, 21 Nov 2023 12:52:58 +0100 |
This tests two parallel stream jobs that will complete around the same
time and run on two different disks in the same iothreads. It is loosely
based on the bug report at https://issues.redhat.com/browse/RHEL-1761.
For me, this test hangs reliably with the originally reported bug in
blk_remove_bs(). After fixing it, it intermittently hangs for the bugs
fixed after it, missing AioContext unlocking in bdrv_graph_wrunlock()
and in stream_prepare(). The deadlocks seem to happen more frequently
when the test directory is on tmpfs.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231115172012.112727-5-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
tests/qemu-iotests/tests/iothreads-stream | 74 +++++++++++++++++++
tests/qemu-iotests/tests/iothreads-stream.out | 11 +++
2 files changed, 85 insertions(+)
create mode 100755 tests/qemu-iotests/tests/iothreads-stream
create mode 100644 tests/qemu-iotests/tests/iothreads-stream.out
diff --git a/tests/qemu-iotests/tests/iothreads-stream
b/tests/qemu-iotests/tests/iothreads-stream
new file mode 100755
index 0000000000..503f221f16
--- /dev/null
+++ b/tests/qemu-iotests/tests/iothreads-stream
@@ -0,0 +1,74 @@
+#!/usr/bin/env python3
+# group: rw quick auto
+#
+# Copyright (C) 2023 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/Owner: Kevin Wolf <kwolf@redhat.com>
+
+import iotests
+
+iotests.script_initialize(supported_fmts=['qcow2'],
+ supported_platforms=['linux'])
+iotests.verify_virtio_scsi_pci_or_ccw()
+
+with iotests.FilePath('disk1.img') as base1_path, \
+ iotests.FilePath('disk1-snap.img') as snap1_path, \
+ iotests.FilePath('disk2.img') as base2_path, \
+ iotests.FilePath('disk2-snap.img') as snap2_path, \
+ iotests.VM() as vm:
+
+ img_size = '10M'
+
+ # Only one iothread for both disks
+ vm.add_object('iothread,id=iothread0')
+ vm.add_device('virtio-scsi,iothread=iothread0')
+
+ iotests.log('Preparing disks...')
+ for i, base_path, snap_path in ((0, base1_path, snap1_path),
+ (1, base2_path, snap2_path)):
+ iotests.qemu_img_create('-f', iotests.imgfmt, base_path, img_size)
+ iotests.qemu_img_create('-f', iotests.imgfmt, '-b', base_path,
+ '-F', iotests.imgfmt, snap_path)
+
+ iotests.qemu_io_log('-c', f'write 0 {img_size}', base_path)
+
+ vm.add_blockdev(f'file,node-name=disk{i}-base-file,'
+ f'filename={base_path}')
+ vm.add_blockdev(f'qcow2,node-name=disk{i}-base,file=disk{i}-base-file')
+ vm.add_blockdev(f'file,node-name=disk{i}-file,filename={snap_path}')
+ vm.add_blockdev(f'qcow2,node-name=disk{i},file=disk{i}-file,'
+ f'backing=disk{i}-base')
+ vm.add_device(f'scsi-hd,drive=disk{i}')
+
+ iotests.log('Launching VM...')
+ vm.launch()
+
+ iotests.log('Starting stream jobs...')
+ iotests.log(vm.qmp('block-stream', device='disk0', job_id='job0'))
+ iotests.log(vm.qmp('block-stream', device='disk1', job_id='job1'))
+
+ finished = 0
+ while True:
+ try:
+ ev = vm.event_wait('JOB_STATUS_CHANGE', timeout=0.1)
+ if ev is not None and ev['data']['status'] == 'null':
+ finished += 1
+ # The test is done once both jobs are gone
+ if finished == 2:
+ break
+ except TimeoutError:
+ pass
+ vm.cmd('query-jobs')
diff --git a/tests/qemu-iotests/tests/iothreads-stream.out
b/tests/qemu-iotests/tests/iothreads-stream.out
new file mode 100644
index 0000000000..ef134165e5
--- /dev/null
+++ b/tests/qemu-iotests/tests/iothreads-stream.out
@@ -0,0 +1,11 @@
+Preparing disks...
+wrote 10485760/10485760 bytes at offset 0
+10 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+wrote 10485760/10485760 bytes at offset 0
+10 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+
+Launching VM...
+Starting stream jobs...
+{"return": {}}
+{"return": {}}
--
2.42.0
- [PULL 0/9] Block layer fixes for 8.2.0-rc1, Kevin Wolf, 2023/11/21
- [PULL 2/9] block: Fix bdrv_graph_wrlock() call in blk_remove_bs(), Kevin Wolf, 2023/11/21
- [PULL 4/9] stream: Fix AioContext locking during bdrv_graph_wrlock(), Kevin Wolf, 2023/11/21
- [PULL 1/9] hw/ide/ahci: fix legacy software reset, Kevin Wolf, 2023/11/21
- [PULL 5/9] iotests: Test two stream jobs in a single iothread,
Kevin Wolf <=
- [PULL 6/9] ide/ioport: move ide_portio_list[] and ide_portio_list2[] definitions to IDE core, Kevin Wolf, 2023/11/21
- [PULL 3/9] block: Fix deadlocks in bdrv_graph_wrunlock(), Kevin Wolf, 2023/11/21
- [PULL 7/9] ide/pci: introduce pci_ide_update_mode() function, Kevin Wolf, 2023/11/21
- [PULL 9/9] hw/ide/via: implement legacy/native mode switching, Kevin Wolf, 2023/11/21
- [PULL 8/9] ide/via: don't attempt to set default BAR addresses, Kevin Wolf, 2023/11/21
- Re: [PULL 0/9] Block layer fixes for 8.2.0-rc1, Stefan Hajnoczi, 2023/11/21