[DRBD-user] Can't access Proxmox GUI when there is no LINSTOR/DRBD quorum

[Nicolas FONTAINE]

Hello,

I am currently testing LINSTOR/DRBD with Proxmox 7.3 on a three nodes 
cluster with:

Nodes A and B:

  * DRBD over ZFS
  * LINSTOR controller and satellite
  * DRBD reactor for HA setup (followed the guide at
    https://linbit.com/drbd-user-guide/linstor-guide-1_0-en/#s-linstor_ha)

Node C:

  * DRBD diskless
  * LINSTOR satellite

Now, if I do the following:

  * All nodes UP and a VM with Proxmox HA enabled and stored on DRBD,
    running on node B.
  * Stop Node A.
  * Stop Node B.
  * Start again Node B.
  * The Proxmox GUI of Node B is no longer accessible until I restart
    Node B. And the VM doesn't start.

In the logs of Node B i can see "pvestatd[1990]: could not connect to 
any LINSTOR controller at 
/usr/share/perl5/PVE/Storage/Custom/LINSTORPlugin.pm line 214."

With drbdmon I can see "QUORUM LOST" on all resources.

I understand the reason that LINSTOR/DRBD won't let access to DRBD 
ressources, since it can't really have quorum on the resources (should I 
transform the diskless node into one with just enough storage for the 
linstor_db?). But I don't think it is normal that when there is no 
LINSTOR/DRBD quorum (but Proxmox quorum), you can't access the GUI of 
some nodes (for example, for running VMs located on another storage).

Thank you for any help.

Regards,

Nicolas.
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