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Re: [Qemu-devel] [libvirt] Question regarding Snapshots

From: Eric Blake
Subject: Re: [Qemu-devel] [libvirt] Question regarding Snapshots
Date: Mon, 27 Feb 2017 13:37:44 -0600
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On 02/27/2017 07:17 AM, Kashyap Chamarthy wrote:
> On Mon, Feb 27, 2017 at 01:33:56PM +0100, Kashyap Chamarthy wrote:
> [...]
>>>> Can you make a snapshot, then go back to the base and ignore that snapshot
>>>> like a closed branch, make another snapshot, and then go back and forth
>>>> from each to each?

Yes.  Or graphically, you can have:

       -- A ... B ... C
base <
       -- D ... E ... F

and toggle between any of the named snapshots at will.  As Kashyap and
others pointed out, libvirt support for reverting to a particular
external snapshot is not fully present, so there are some manual steps
involved, but the task is still doable.

>> For the long answer to the complications involved in reverting to
>> external snapshots, refer this (long read):
>> https://wiki.libvirt.org/page/I_created_an_external_snapshot,_but_libvirt_will_not_let_me_delete_or_revert_to_it
> [...]

Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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