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From Daan Hoogland <daan.hoogl...@gmail.com>
Subject Re: Cloudstack backup framework
Date Fri, 02 Jul 2021 08:41:29 GMT
Yourdan, please look at the API [1]. I'm not sure what your hypervisor
supports. This is documented to only work on KVM.

In general I wouldn't concern myself with umount when reverting volume, but
1. shutdown the VM
2. attach the reverted volume and
3. boot up again.

Hope you're successful with your design,

[1] https://cloudstack.apache.org/api/apidocs-4.15/apis/revertSnapshot.html


On Tue, Jun 29, 2021 at 1:05 PM Yordan Kostov <YordanK@nsogroup.com> wrote:

> Wondering if that is on purpose (technical issue or design flaw due to
> which it is better this way)?
>
> While looking into how volume backup (VB) functions will it be possible to
> design a revert this way:
>
>   1.    On the volume snapshot page a button that allows reverting
> original disk to this state
>   2.   When button is pressed
>         2.1. New volume is created from the VB on the backup NFS storage
>         2.2. VM existing partition is unmounted
>         2.3.  the newly created volume is attached on its place
>         2.4. (not sure about this step) unmounted partition is removed
>
> Is this design valid? It does not look that complicated, I will ditch in
> ACS development files next week and see if it is suitable task for me.
>
> Best regards,
> Jordan
>
>
>
> -----Original Message-----
> From: Yordan Kostov <YordanK@NSOGROUP.COM>
> Sent: Tuesday, June 29, 2021 12:29 PM
> To: users@cloudstack.apache.org
> Subject: Cloudstack backup framework
>
>
> [X] This message came from outside your organization
>
>
> Dear all,
>
>                 I have been playing around ACS backup capabilities (4.15
> with XCP-NG) and noticed the following:
>
>   1.  Full  VM snapshot is short term solution for immediate revert after
> bad patch change
>   2.  Volume snapshot is long term backup solution of VM data but metadata
> is not stored
>
> Did  some tests with Volume snaps as follow:
>
>   *   Made some root partition schedule snaps
>   *   Converted one snap to volume
>   *   I could not find a way to create a new instance with that volume. Is
> there a direct way (GUI and API)?  It is possible to create a template but
> that seems like a bit too much unnecessary steps to revert a VM.
>
>
> Is it possible to revert existing VM volume from snapshot directly (from a
> user perspective through the GUI.
>
>
>
> I read the documentation – (
> https://urldefense.com/v3/__http://docs.cloudstack.apache.org/en/latest/adminguide/storage.html?highlight=Snapshot*snapshot-restore__;Iw!!A6UyJA!w7oYtaRN24lFJreApwzhpLbWG_V1LHlsIfqocukmbOCLIRdtOCGGN_vIuBxUe84U$
> ) which also say that direct volume revert is not possible ☹.
>
>
> Best regards,
> Jordan
>
> <font size="2"><font color="#D8D8D8">11!</font>
>
>

-- 
Daan

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