[pve-devel] Unable to initialize TPM storage over iSCSI - TrueNAS over iSCSI

[Fabian Grünbichler]

On September 25, 2025 5:36 am, Lorne Guse via pve-devel wrote:
> When I try to start a windows VM with q35 / OVMF (UEFI) and the TPM and EFI=
>  disks configured as iSCSI LUN on TrueNAS I'm getting this error:
> 
> TrueNAS [INFO] : Connected
> TrueNAS [INFO] : Authenticated
> /bin/swtpm exit with status 256:
> TASK ERROR: start failed: command 'swtpm_setup --tpmstate file://iscsi://10=
> .11.11.1/iqn.2005-01.com.techgsolutions:proxmox/16 --createek --create-ek-c=
> ert --create-platform-cert --lock-nvram --config /etc/swtpm_setup.conf --ru=
> nas 0 --not-overwrite --tpm2 --ecc' failed: exit code 1
> 
> Does this mean that TPM cannot be stored on an iSCSI LUN?

yes, see https://bugzilla.proxmox.com/show_bug.cgi?id=3662 and https://bugzilla.proxmox.com/show_bug.cgi?id=4693#c17