From: Tao Xu <tao3.xu@intel.com>
To: Alberto Garcia <berto@igalia.com>, Kevin Wolf <kwolf@redhat.com>
Cc: "Zhang, Chen" <chen.zhang@intel.com>,
John Snow <jsnow@redhat.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
Max Reitz <mreitz@redhat.com>
Subject: Re: Migration with ``drive-mirror`` + NBD will let quorum qcow2 image become larger
Date: Wed, 20 May 2020 16:36:42 +0800 [thread overview]
Message-ID: <d0e85184-2732-bba5-883a-98cf92d9c7e4@intel.com> (raw)
In-Reply-To: <w51blmknfnr.fsf@maestria.local.igalia.com>
On 5/19/2020 10:49 PM, Alberto Garcia wrote:
> On Tue 19 May 2020 11:15:44 AM CEST, Kevin Wolf wrote:
>> But maybe it could return a limited set of flags at least so that the
>> mirror job can get the BDRV_BLOCK_ZERO information if the quorum
>> children agree on it.
>
> Yeah, maybe it is possible to implement a conservative version of that
> function and fall back to BDRV_BLOCK_DATA | BDRV_BLOCK_ALLOCATED (or
> something like that) in the cases where there's no clear alternative.
>
> Berto
>
Thank you Kevin and Berto for your suggestion.
prev parent reply other threads:[~2020-05-20 8:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-19 8:32 Migration with ``drive-mirror`` + NBD will let quorum qcow2 image become larger Tao Xu
2020-05-19 9:15 ` Kevin Wolf
2020-05-19 14:49 ` Alberto Garcia
2020-05-20 8:36 ` Tao Xu [this message]
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