[SOLVED] Proxmox VE 9.0 BETA iSCSI Thick-LVM Shared-Storage VM Snapshot not wroking

[the_Uli]

Hi folks

I'm running a Proxmox 9 Beta cluster to test the new LVM shared storage snapshot feature (using iSCSI via a TrueNAS server).
Unfortunately, I'm unable to create a snapshot of the VM on that storage.
What am I doing wrong?

Thx and greetings

 

[jsterr]

Your VM-100-Disk-2 is raw, and is only allowed to be qcow2. Seems like a vTPM-disk.
I personally also did not set "Use LUNs directly" not sure, if its a requirement though.

 

[the_Uli]

You're right! The VM does have a vTPM, but currently there's no alternative to using "RAW" mode, and modern systems like Windows Server 2025 require a TPM.
I just created a test VM without a RAW device, and it works now.

There really needs to be a proper solution for this going forward... otherwise, it's going to become a problem.

 

[MarkusKo]

No, Windows Server 2025 does not exactly needs a TPM to run, only if you insist on a secured core deployment or bitlocker ...

 

[Neobin]

For reference:
https://bugzilla.proxmox.com/show_bug.cgi?id=4693

 

[Johannes S]

No, Windows Server 2025 does not exactly needs a TPM to run, only if you insist on a secured core deployment or bitlocker ...

On the other hand this might be a hard requirement for an organisation due to security/compilance stuff