On Tue, Jul 07, 2020 at 05:28:21PM +0200, Philippe Mathieu-Daudé wrote:
> On 6/26/20 12:25 PM, Stefan Hajnoczi wrote:
> > On Thu, Jun 25, 2020 at 02:31:14PM +0100, Peter Maydell wrote:
> >> On Wed, 24 Jun 2020 at 11:02, Stefan Hajnoczi <stefa...@redhat.com> wrote:
> >>>
> >>> The following changes since commit
> >>> 171199f56f5f9bdf1e5d670d09ef1351d8f01bae:
> >>>
> >>> Merge remote-tracking branch
> >>> 'remotes/alistair/tags/pull-riscv-to-apply-20200619-3' into staging
> >>> (2020-06-22 14:45:25 +0100)
> >>>
> >>> are available in the Git repository at:
> >>>
> >>> https://github.com/stefanha/qemu.git tags/block-pull-request
> >>>
> >>> for you to fetch changes up to 7838c67f22a81fcf669785cd6c0876438422071a:
> >>>
> >>> block/nvme: support nested aio_poll() (2020-06-23 15:46:08 +0100)
> >>>
> >>> ----------------------------------------------------------------
> >>> Pull request
> >>>
> >>> ----------------------------------------------------------------
> >>
> >> Failure on iotest 030, x86-64 Linux:
> >>
> >> TEST iotest-qcow2: 030 [fail]
> >> QEMU --
> >> "/home/petmay01/linaro/qemu-for-merges/build/alldbg/tests/qemu-iotests/../../x86_64-softmmu/qemu-system-x86_64"
> >> -nodefaults -display none -accel qtest
> >> QEMU_IMG --
> >> "/home/petmay01/linaro/qemu-for-merges/build/alldbg/tests/qemu-iotests/../../qemu-img"
> >> QEMU_IO --
> >> "/home/petmay01/linaro/qemu-for-merges/build/alldbg/tests/qemu-iotests/../../qemu-io"
> >> --cache writeback --aio threads -f qcow2
> >> QEMU_NBD --
> >> "/home/petmay01/linaro/qemu-for-merges/build/alldbg/tests/qemu-iotests/../../qemu-nbd"
> >> IMGFMT -- qcow2 (compat=1.1)
> >> IMGPROTO -- file
> >> PLATFORM -- Linux/x86_64 e104462 4.15.0-76-generic
> >> TEST_DIR --
> >> /home/petmay01/linaro/qemu-for-merges/build/alldbg/tests/qemu-iotests/scratch
> >> SOCK_DIR -- /tmp/tmp.8tgdDjoZcO
> >> SOCKET_SCM_HELPER --
> >> /home/petmay01/linaro/qemu-for-merges/build/alldbg/tests/qemu-iotest/socket_scm_helper
> >>
> >> --- /home/petmay01/linaro/qemu-for-merges/tests/qemu-iotests/030.out
> >> 2019-07-15 17:18:35.251364738 +0100
> >> +++
> >> /home/petmay01/linaro/qemu-for-merges/build/alldbg/tests/qemu-iotests/030.out.bad
> >> 2020-06-25 14:04:28.500534007 +0100
> >> @@ -1,5 +1,17 @@
> >> -...........................
> >> +.............F.............
> >> +======================================================================
> >> +FAIL: test_stream_parallel (__main__.TestParallelOps)
> >> +----------------------------------------------------------------------
> >> +Traceback (most recent call last):
> >> + File "030", line 246, in test_stream_parallel
> >> + self.assert_qmp(result, 'return', {})
> >> + File
> >> "/home/petmay01/linaro/qemu-for-merges/tests/qemu-iotests/iotests.py",
> >> line 848, in assert_qmp
> >> + result = self.dictpath(d, path)
> >> + File
> >> "/home/petmay01/linaro/qemu-for-merges/tests/qemu-iotests/iotests.py",
> >> line 822, in dictpath
> >> + self.fail(f'failed path traversal for "{path}" in "{d}"')
> >> +AssertionError: failed path traversal for "return" in "{'error':
> >> {'class': 'DeviceNotActive', 'desc': "Block job 'stream-node8' not
> >> found"}}"
> >> +
> >> ----------------------------------------------------------------------
> >> Ran 27 tests
> >>
> >> -OK
> >> +FAILED (failures=1)
> >
> > Strange, I can't reproduce this failure on my pull request branch or on
> > qemu.git/master.
> >
> > Is this failure deterministic? Are you sure it is introduced by this
> > pull request?
>
> Probably not introduced by this pullreq, but I also hit it on FreeBSD:
> https://cirrus-ci.com/task/4620718312783872?command=main#L5803
>
> TEST iotest-qcow2: 030 [fail]
> QEMU --
> "/tmp/cirrus-ci-build/build/tests/qemu-iotests/../../aarch64-softmmu/qemu-system-aarch64"
> -nodefaults -display none -machine virt -accel qtest
> QEMU_IMG --
> "/tmp/cirrus-ci-build/build/tests/qemu-iotests/../../qemu-img"
> QEMU_IO --
> "/tmp/cirrus-ci-build/build/tests/qemu-iotests/../../qemu-io" --cache
> writeback --aio threads -f qcow2
> QEMU_NBD --
> "/tmp/cirrus-ci-build/build/tests/qemu-iotests/../../qemu-nbd"
> IMGFMT -- qcow2 (compat=1.1)
> IMGPROTO -- file
> PLATFORM -- FreeBSD/amd64 cirrus-task-4620718312783872 12.1-RELEASE
> TEST_DIR -- /tmp/cirrus-ci-build/build/tests/qemu-iotests/scratch
> SOCK_DIR -- /tmp/tmp.aZ5pxFLF
> SOCKET_SCM_HELPER --
> --- /tmp/cirrus-ci-build/tests/qemu-iotests/030.out 2020-07-07
> 14:48:48.123804000 +0000
> +++ /tmp/cirrus-ci-build/build/tests/qemu-iotests/030.out.bad 2020-07-07
> 15:05:07.863685000 +0000
> @@ -1,5 +1,17 @@
> -...........................
> +.............F.............
> +======================================================================
> +FAIL: test_stream_parallel (__main__.TestParallelOps)
> ----------------------------------------------------------------------
> +Traceback (most recent call last):
> + File "030", line 246, in test_stream_parallel
> + self.assert_qmp(result, 'return', {})
> + File "/tmp/cirrus-ci-build/tests/qemu-iotests/iotests.py", line 848,
> in assert_qmp
> + result = self.dictpath(d, path)
> + File "/tmp/cirrus-ci-build/tests/qemu-iotests/iotests.py", line 822,
> in dictpath
> + self.fail(f'failed path traversal for "{path}" in "{d}"')
> +AssertionError: failed path traversal for "return" in "{'error':
> {'class': 'DeviceNotActive', 'desc': "Block job 'stream-node8' not found"}}"
> +
> +----------------------------------------------------------------------
> Ran 27 tests
Looks like a race condition that can be forced with a sleep call.
With the following patch, I can reproduce it every time:
diff --git a/tests/qemu-iotests/030 b/tests/qemu-iotests/030
index 1cdd7e2999..ee5374fc22 100755
--- a/tests/qemu-iotests/030
+++ b/tests/qemu-iotests/030
@@ -241,6 +241,7 @@ class TestParallelOps(iotests.QMPTestCase):
result = self.vm.qmp('block-stream', device=node_name,
job_id=job_id, base=self.imgs[i-2], speed=512*1024)
self.assert_qmp(result, 'return', {})
+ time.sleep(3)
for job in pending_jobs:
result = self.vm.qmp('block-job-set-speed', device=job, speed=0)
self.assert_qmp(result, 'return', {})
--
Eduardo
