Attaching LV to VM fails with "failed to update VM 199: not enough free space (0 < 33554432) (500)"

Long story short, I tried renaming the hostname of my PVE single host (no cluster) and it turned into a nightmare. If I'd knew I would have NEVER tried this...

Please bear in mind "old" hostname was "proxmox" and new hostname is "srv-vir01"

Basically I followed https://pve.proxmox.com/wiki/Renaming_a_PVE_node

Steps taken to rename hostname:

• nano /etc/hosts
• nano /etc/hostname
• nano /etc/mailname
• nano /etc/postfix/main.cf
• nano /etc/network/interfaces

...

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