[pve-devel] Storage plugin questions

[pve-devel] Storage plugin questions

[Max Schettler via pve-devel]

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From: Max Schettler <max@simplyblock.io>
To: pve-devel@lists.proxmox.com
Subject: Storage plugin questions
Date: Tue, 18 Mar 2025 11:32:53 +0100
Message-ID: <fd453761-e3e9-4720-a2b6-4e86775fe153@simplyblock.io>

Hi,

I'm working on an Proxmox storage plugin. I have a few questions 
possibilities and specific semantics:

- is it possible to integrate with the webinterface, to allow creation 
of a custom storage provider from there, instead of the CLI?
- when an image is deleted, are derived snapshots supposed to be removed 
as well? Depending on the storage type this is a technical necessity, 
but if not, should it still be done? From the perspective of the storage 
provider it'd be difficult to prevent stale snapshots of deleted VMs to 
persist.

Best regards
Max



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Re: [pve-devel] Storage plugin questions

[Fiona Ebner]

Am 18.03.25 um 11:32 schrieb Max Schettler via pve-devel:
> - is it possible to integrate with the webinterface, to allow creation of a custom storage provider from there, instead of the CLI?

Not yet and we can't give a timeline/promises, but others requested this
as well, see:
https://lore.proxmox.com/pve-devel/D8E8OZGX1HI7.QH6MQS4GLOTI@proxmox.com/

> - when an image is deleted, are derived snapshots supposed to be removed as well? Depending on the storage type this is a technical necessity, but if not, should it still be done? From the perspective of the storage provider it'd be difficult to prevent stale snapshots of deleted VMs to persist.

Yes, storage snapshots (the ones created via volume_snapshot()) in
Proxmox VE belong to the volume they are created with. And removing the
volume should also remove those snapshots.

Best Regards,
Fiona


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Re: [pve-devel] Storage plugin questions

[Thomas Lamprecht]

Am 21.03.25 um 15:45 schrieb Fiona Ebner:
> Am 18.03.25 um 11:32 schrieb Max Schettler via pve-devel:
>> - is it possible to integrate with the webinterface, to allow creation of a custom storage provider from there, instead of the CLI?
> Not yet and we can't give a timeline/promises, but others requested this
> as well, see:
> https://lore.proxmox.com/pve-devel/D8E8OZGX1HI7.QH6MQS4GLOTI@proxmox.com/

FYI: This is an even older standing request [0] and the idea is to add
something similar to what we have for ACME DNS-challenge plugins.

[0]: https://bugzilla.proxmox.com/show_bug.cgi?id=3420


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