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[Qemu-block] iotest 77 failure [was: [Qemu-devel] [PATCH v2 0/5] backup
From: |
Eric Blake |
Subject: |
[Qemu-block] iotest 77 failure [was: [Qemu-devel] [PATCH v2 0/5] backup improvements part 1] |
Date: |
Fri, 13 Oct 2017 08:15:45 -0500 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 |
[adding qemu-block]
On 10/13/2017 02:37 AM, Vladimir Sementsov-Ogievskiy wrote:
> 077 is unrelated to backup, it's already broken test:
>
> i=1; while check -nbd 077; do echo $((i++)) - OK; done; echo $i - FAIL
>
> failed on 3rd try for me on master
>
>> 077 - output mismatch (see 077.out.bad)
>> --- /tmp/qemu-test/src/tests/qemu-iotests/077.out 2017-10-12
>> 14:02:13.000000000 +0000
>> +++ /tmp/qemu-test/build/tests/qemu-iotests/077.out.bad 2017-10-12
>> 14:29:25.909887675 +0000
>> @@ -40,9 +40,9 @@
>> wrote XXX/XXX bytes at offset XXX
>> XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
>> blkdebug: Resuming request 'B'
>> +blkdebug: Resuming request 'A'
>> wrote XXX/XXX bytes at offset XXX
>> XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
>> -blkdebug: Resuming request 'A'
>> wrote XXX/XXX bytes at offset XXX
>> XXX bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
>> wrote XXX/XXX bytes at offset XXX
Looks like we have a data race. Kevin, you wrote this test, any ideas on
how we can make it more robust?
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3266
Virtualization: qemu.org | libvirt.org
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- [Qemu-block] [PATCH v2 0/5] backup improvements part 1, Vladimir Sementsov-Ogievskiy, 2017/10/12
- [Qemu-block] [PATCH 2/5] backup: move from done_bitmap to copy_bitmap, Vladimir Sementsov-Ogievskiy, 2017/10/12
- [Qemu-block] [PATCH 3/5] backup: init copy_bitmap from sync_bitmap for incremental, Vladimir Sementsov-Ogievskiy, 2017/10/12
- [Qemu-block] [PATCH 1/5] hbitmap: add next_zero function, Vladimir Sementsov-Ogievskiy, 2017/10/12
- [Qemu-block] [PATCH 4/5] backup: simplify non-dirty bits progress processing, Vladimir Sementsov-Ogievskiy, 2017/10/12
- [Qemu-block] [PATCH 5/5] backup: use copy_bitmap in incremental backup, Vladimir Sementsov-Ogievskiy, 2017/10/12
- Re: [Qemu-block] [Qemu-devel] [PATCH v2 0/5] backup improvements part 1, no-reply, 2017/10/12
- [Qemu-block] ping Re: [PATCH v2 0/5] backup improvements part 1, Vladimir Sementsov-Ogievskiy, 2017/10/31