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Re: [Qemu-devel] [ceph-users] qemu + rbd block driver with cache=writeba


From: Andrey Korolyov
Subject: Re: [Qemu-devel] [ceph-users] qemu + rbd block driver with cache=writeback, is live migration safe ?
Date: Sat, 12 Apr 2014 22:41:20 +0400

Hello,

AFAIK qemu calls bdrv_flush at the end of migration process so this is
absolutely safe. Anyway it`s proven by our production systems very
well too :)

On Sat, Apr 12, 2014 at 7:01 PM, Alexandre DERUMIER <address@hidden> wrote:
> Hello,
>
> I known that qemu live migration with disk with cache=writeback are not safe 
> with storage like nfs,iscsi...
>
> Is it also true with rbd ?
>
>
> If yes, it is possible to disable manually writeback online with qmp ?
>
> Best Regards,
>
> Alexandre
> _______________________________________________
> ceph-users mailing list
> address@hidden
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com



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