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Re: [Qemu-devel] qemu 2.0, deadlock in block-commit


From: Marcin Gibuła
Subject: Re: [Qemu-devel] qemu 2.0, deadlock in block-commit
Date: Thu, 29 May 2014 19:43:59 +0200
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0

Please try disabling I/O limits on the drive and try again.

Is there anything else I could try?


I've captured trace of hanged VM with following events traced:

bdrv_*
paio_*
thread_pool_*
commit_*
qcow2_*

and debug code that prints requests from traced_requests in bdrv_requests_pending function.

It's available here: http://filebin.net/tmscfay2pa/hanged-trace.gz (50mb after decompression)

--
mg



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