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Date: Tue, 21 Feb 2012 17:31:26 +0000
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From: Stefan Hajnoczi <stefanha@gmail.com>
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Subject: Re: [Qemu-devel] [RFC PATCH] replication agent module
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To: Markus Armbruster <armbru@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>, Ori Mamluk <omamluk@zerto.com>, dlaor@redhat.com, qemu-devel@nongnu.org, Luiz Capitulino <lcapitulino@redhat.com>

On Tue, Feb 21, 2012 at 4:01 PM, Markus Armbruster <armbru@redhat.com> wrot=
e:
> Anthony Liguori <anthony@codemonkey.ws> writes:
>
>> On 02/07/2012 07:50 AM, Stefan Hajnoczi wrote:
>>> On Tue, Feb 7, 2012 at 1:34 PM, Kevin Wolf<kwolf@redhat.com> =A0wrote:
>>>> Am 07.02.2012 11:29, schrieb Ori Mamluk:
>>>>> Repagent is a new module that allows an external replication system t=
o
>>>>> replicate a volume of a Qemu VM.
>>>
>>> I recently joked with Kevin that QEMU is on its way to reimplementing
>>> the Linux block and device-mapper layers. =A0Now we have drbd, thanks!
>>> :P
>>
>> I don't think it's a joke. =A0Do we really want to get into this space?
>> Why not just use drbd?
>>
>> If it's because we want to also work with image formats, perhaps we
>> should export our image format code as a shared library and let drbd
>> link against it.
>
> I want to be able to "mount foo.qcow2 /mnt".

That would only be possible if foo.qcow2 is a flat file system without
a partition table or logical volumes.

But I completely agree that working with image files on the host
should be as easy as mount.

Stefan