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Re: bdrv_drained_begin deadlock with io-threads
From: |
Dietmar Maurer |
Subject: |
Re: bdrv_drained_begin deadlock with io-threads |
Date: |
Thu, 2 Apr 2020 11:10:19 +0200 (CEST) |
> It seems to fix it, yes. Now I don't get any hangs any more.
I just tested using your configuration, and a recent centos8 image
running dd loop inside it:
# while dd if=/dev/urandom of=testfile.raw bs=1M count=100; do sync; done
With that, I am unable to trigger the bug.
Would you mind running the test using a Debian Buster image running "stress-ng
-d 5" inside?
I (and to other people here) can trigger the bug quite reliable with that.
On Debian, you can easily install stress-ng using apt:
# apt update
# apt install stress-ng
Seems stress-ng uses a different write pattern which can trigger the bug
more reliable.
- Re: bdrv_drained_begin deadlock with io-threads, Kevin Wolf, 2020/04/01
- Re: bdrv_drained_begin deadlock with io-threads, Dietmar Maurer, 2020/04/01
- Re: bdrv_drained_begin deadlock with io-threads, Dietmar Maurer, 2020/04/01
- Re: bdrv_drained_begin deadlock with io-threads, Kevin Wolf, 2020/04/01
- Re: bdrv_drained_begin deadlock with io-threads, Dietmar Maurer, 2020/04/01
- Re: bdrv_drained_begin deadlock with io-threads, Kevin Wolf, 2020/04/01
- Re: bdrv_drained_begin deadlock with io-threads, Dietmar Maurer, 2020/04/02
- Re: bdrv_drained_begin deadlock with io-threads,
Dietmar Maurer <=
- Re: bdrv_drained_begin deadlock with io-threads, Kevin Wolf, 2020/04/02
- Re: bdrv_drained_begin deadlock with io-threads, Kevin Wolf, 2020/04/02
- Re: bdrv_drained_begin deadlock with io-threads, Dietmar Maurer, 2020/04/02
- Re: bdrv_drained_begin deadlock with io-threads, Kevin Wolf, 2020/04/02
- Re: bdrv_drained_begin deadlock with io-threads, Kevin Wolf, 2020/04/02
- Re: bdrv_drained_begin deadlock with io-threads, Thomas Lamprecht, 2020/04/03
- Re: bdrv_drained_begin deadlock with io-threads, Dietmar Maurer, 2020/04/03
- Re: bdrv_drained_begin deadlock with io-threads, Kevin Wolf, 2020/04/03
- Re: bdrv_drained_begin deadlock with io-threads, Dietmar Maurer, 2020/04/03
- Re: bdrv_drained_begin deadlock with io-threads, Kevin Wolf, 2020/04/06