About PVE Backup Integration Guide

[Prashant Patil]

Hi Thomas,
We have few more questions in addition to those mentioned in the previous email.

  1.  How to get allocated blocks/sectors from the snapshot of the raw format virtual disk attached to a running VM (disk present on the block based storage such as lvm, lvm-thin, etc)?
  2.  How to get allocated blocks/sectors from the snapshot of the vmdk format virtual disk attached to a running VM?
  3.  As per below link, certain storage types do not support snapshots. In such cases, what is the recommended way to take backup of the running VM?

https://pve.proxmox.com/wiki/Storage

Could you kindly assist us in obtaining answers to these questions?

Thanks
Prashant

From: Prashant Patil <Prashant.Gamepatil at veritas.com>
Sent: 05 March 2025 12:06 PM
To: Thomas Lamprecht <t.lamprecht at proxmox.com>; pve-devel at lists.proxmox.com
Cc: Anuradha Joshi <Anuradha.Joshi at veritas.com>; Jason Voneberstein <Jason.vonEberstein at veritas.com>; Sudhir Subbarao <Sudhir.Subbarao at veritas.com>
Subject: RE: About PVE Backup Integration Guide


Thank you, Thomas, for your prompt response to this.



We would like to know following things:

  1.  How much part of the plugins method is done?
  2.  How soon we can start the integration?
  3.  Is there any plugin method's documentation already available? If yes, could you please share?



Regards,

Prashant



-----Original Message-----
From: Thomas Lamprecht <t.lamprecht at proxmox.com<mailto:t.lamprecht at proxmox.com>>
Sent: 04 March 2025 10:07 PM
To: Prashant Patil <Prashant.Gamepatil at veritas.com<mailto:Prashant.Gamepatil at veritas.com>>; pve-devel at lists.proxmox.com<mailto:pve-devel at lists.proxmox.com>
Cc: Anuradha Joshi <Anuradha.Joshi at veritas.com<mailto:Anuradha.Joshi at veritas.com>>; Jason Voneberstein <Jason.vonEberstein at veritas.com<mailto:Jason.vonEberstein at veritas.com>>
Subject: Re: About PVE Backup Integration Guide





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Hello Prashant,



Am 04.03.25 um 16:47 schrieb Prashant Patil:

> Hello All,

> Hope this email finds you well.

>

> At Arctera/Veritas, we are exploring the addition of support for data protection of Proxmox environments within our backup product. We would like to know if there is a detailed backup/restore API guide available that could serve as a good starting point for our engineering team. Could you please assist us with this? We have already reviewed the REST APIs.



Thanks for your interest in supporting Proxmox VE.



We are in progress of adding a way where external backup provider can provide a plugin to hook safely and correctly into our backup APIs, see:



https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore.proxmox.com%2Fpve-devel%2F20241114150754.374376-1-f.ebner%40proxmox.com%2F&data=05%7C02%7CPrashant.Gamepatil%40veritas.com%7C1816d6bad0c4419d245a08dd5b3adcd0%7Cfc8e13c0422c4c55b3eaca318e6cac32%7C0%7C0%7C638767030578307107%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=X3vGHTDdU8eqfj77XLGcn1myfqvNhPJPaum5dAJcw2Q%3D&reserved=0<https://lore.proxmox.com/pve-devel/20241114150754.374376-1-f.ebner@proxmox.com/>



This includes two example plugins to showcase how it would be used.



We would be open to fast-track this effort for inclusion with feedback from backup vendors. While there are other ways to hook one in, these are not nice and can cause problems - so in the long term we expect that most/all backup vendors will switch to this plugin method, at least for supported setups.



best regards

Thomas