Strange issues with 6.4 version

[m3a2r1]

I've got strange issues with my pve 6.4 - all vms are working now so I don't want to restart it (yet).
My symptoms:
- pveproxy failed to work, showed as running but not responsible - terminal hangs when I try to restart/stop/start service
- the same with pvedaemon
- when I try chdir to /etc/pve from midnight commander - terminal hangs
- when I try 'qm list' - terminal hangs

What can I do to debug the reason of that?

 

[Matthias.]

https://pve.proxmox.com/wiki/FAQ#faq-support-table
Considering 6.4 has been EOL for quite some time, I would consider updating.

 

[m3a2r1]

I know but I'm little scared of that, that's one machine, if something will go wrong it will be a big problem.

 

[m3a2r1]

There is something else, screenshot from my physical machine attached: