Why does proxmox and several VMs hang but not all?

Question

Proxmox

such a misfortune happened, proxmox freezes for the second time, virtual machines on windows work, although it may be a coincidence

when I went to the server room, the server itself does not respond to commands at all, and on the screen it’s such a miracle to


reboot the entire server, this is really insanity, how to win, where look for logs and what could it be?
I didn’t install the server, I don’t know what sda is, maybe it’s the ssd on which / is installed, or maybe some other disk, but the fact that it has problems does not say why they arose, because after a reboot it may take several days before an error occurs again

where to dig?

the saddest thing is that I can't even connect to it via ssh

Answer 1

It is necessary to dig a grave, the disk has died or is dying. Cars that live - live in memory until it ends.