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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: Fri, 3 Apr 2020 10:26:19 +0200 (CEST)

> With the following patch, it seems to survive for now. I'll give it some
> more testing tomorrow (also qemu-iotests to check that I didn't
> accidentally break something else.)

Wow, that was fast! Seems your patch fixes the bug!

I wonder what commit introduced that problem, maybe:

https://github.com/qemu/qemu/commit/cf3129323f900ef5ddbccbe86e4fa801e88c566e#diff-7cb66df56045598b75a219eebc27efb6

If so, version 4.1.X in not affected by this bug, but 4.2.0 and later?




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