On 05/23/2017 08:06 AM, Xieyingtai wrote: [please don't top-post on technical lists]
> Thanks for your advice. It's truly effective to solve the deadlock issue > by releasing AioContext in advance. While in some scenarios, AioContext > could not be releasd such as external snapshot using transaction which > should release AioContext together during clean up() procedure. This > leads to a dead lock in BDRV_POLL_WHILE when serveral BDS own the > same AioContext. Can you post a reproduction formula for the deadlock that you are seeing? -- Eric Blake, Principal Software Engineer Red Hat, Inc. +1-919-301-3266 Virtualization: qemu.org | libvirt.org
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