[Qemu-devel] snapshot question- how to fetch the tmp file?

[Qemu-devel] snapshot question- how to fetch the tmp file?

[涂化衍]

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Dear all,

I have a question to use the qemu-snapshot.
While I create a snapshot file, and use it to restore my vm, everything is
okay.
But, I can't find the temp_snapshot file on my system. It seems like a
invisit file.
How can I get it in my system. Or, could you show me how to fetch it?

Thanks,

David@Taiwan

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Re: [Qemu-devel] snapshot question- how to fetch the tmp file?

[Mulyadi Santosa]

On Thu, Mar 31, 2011 at 13:39, 涂化衍 <david19851229@gmail.com> wrote:
> Dear all,
>
> I have a question to use the qemu-snapshot.
> While I create a snapshot file, and use it to restore my vm, everything is
> okay.
> But, I can't find the temp_snapshot file on my system. It seems like a
> invisit file.
> How can I get it in my system. Or, could you show me how to fetch it?

AFAIK, it is unlinked right after it is opened. So the trick is by
using lsof, locate its file descriptor number and check that by
referring to /proc/<pid of qemu or kvm>/fd/<file descriptor num>

-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com

Re: [Qemu-devel] snapshot question- how to fetch the tmp file?

[Mulyadi Santosa]

2011/3/31 涂化衍 <david19851229@gmail.com>:
> Dear Mr/Miss,

It's Mr :)

> Thanks for your information. We have already found "something" in this path.
> But, this problem is still alive. We can't restore this virtual machine on
> another physical machine from host A to host B by using snapshot

I might misunderstood your problem, but I think you better use "save
vm" feature ... and for that, you need to use qcow2 disk image format.

-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
training: mulyaditraining.blogspot.com