[pve-devel] lvm secure erase bug with raw volume report from user forum

[pve-devel] lvm secure erase bug with raw volume report from user forum

[DERUMIER, Alexandre via pve-devel]

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From: "DERUMIER, Alexandre" <alexandre.derumier@groupe-cyllene.com>
To: "pve-devel@lists.proxmox.com" <pve-devel@lists.proxmox.com>
Subject: lvm secure erase bug with raw volume report from user forum
Date: Fri, 17 Oct 2025 09:52:19 +0000
Message-ID: <89cf34687b834a8ed35764b63c81bc9f543fc9ec.camel@groupe-cyllene.com>

Hi,

one user have reported a bug with secure erase on lvm raw

https://forum.proxmox.com/threads/erase-data-fills-ram.171556/

It's seem that the raw volumes are not forced to be activated before
erasing,so it's like we are writing to /dev/ , and fill the memory
instead erasing the volume.

I don't have verified it yet.

I'll look at it next week as I was also working on the patch to improve
speed.

(sorry to be late, I have super busy theses last weeks)

Alexandre

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Re: [pve-devel] lvm secure erase bug with raw volume report from user forum

[Fabian Grünbichler]

On October 17, 2025 11:52 am, DERUMIER, Alexandre via pve-devel wrote:
> one user have reported a bug with secure erase on lvm raw
> 
> https://forum.proxmox.com/threads/erase-data-fills-ram.171556/
> 
> It's seem that the raw volumes are not forced to be activated before
> erasing,so it's like we are writing to /dev/ , and fill the memory
> instead erasing the volume.
> 
> I don't have verified it yet.
> 
> I'll look at it next week as I was also working on the patch to improve
> speed.

this also got reported as https://bugzilla.proxmox.com/show_bug.cgi?id=6941
where I CCed you as well ;) if you want to write the patch, please
assign it to yourself so we avoid duplicate work!

Fabian


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