On 08/24/2017 07:59 AM, meeho yuen wrote:
> Public bug reported:
> 
> The vm guest runs a iotest program, and i migrate it with virsh --copy-
> storage-all,then the qemu process on the source host happens to crash
> with the following message:
> 
> kvm: block/io.c:1543: bdrv_co_pwritev: Assertion `!(bs->open_flags & 0x0800)' 
> failed.
> 2017-08-24 11:43:45.919+0000: shutting down, reason=crashed

>   here is the release:
>   qemu 2.7 & 2.10.rc3 were tested.

The just-tagged 2.10-rc4 includes a fix that should be addressing that
issue during live migration; can you please re-test with that?  (see
also https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg04513.html)

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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