From: Matteo Bertini <veb@freemail.it>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] Re: Online image backup
Date: Thu, 22 Nov 2007 11:38:42 +0100 [thread overview]
Message-ID: <fi3m7j$7ch$1@ger.gmane.org> (raw)
In-Reply-To: <47436778.4060806@bellard.org>
Il 21-11-2007 0:02, Fabrice Bellard ha scritto:
> Matteo Bertini wrote:
>> Hello everyone,
>>
>> is there any support for an online image backup? Or some direction to
>> have it?
>>
>> Imagine I have an emulated server. How can I make an online backup of
>> the server state?
>>
>> If I'm right in the actual design this is very hard.
>>
>> Or there are some image internals update rules that permit a consistent
>> copy possible?
>
> It should not be difficult provided the VM is using the QEMU qcow2 image
> format (doing a backup can be seen as a kind of snapshot).
>
I have tested that is quite hard to corrupt an image, even copying
during a savevm, at least the last completely saved one is loadvm-able.
And that is good, but I didn't really undestand what appends at
filesystem level...
Am I somewhat granted that after a savevm and a copy (online) the image
is loadvm-able and the filesystem is back to the last saved state?
Thank you,
Matteo Bertini
prev parent reply other threads:[~2007-11-22 10:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-20 11:23 [Qemu-devel] Online image backup Matteo Bertini
2007-11-20 23:02 ` Fabrice Bellard
2007-11-22 10:38 ` Matteo Bertini [this message]
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