ProxMox 5 -> 6 (host migration)

Ivan Dimitrov

Well-Known Member
Jul 14, 2016
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Hi, I want to migrate my ProxMox 5 host to 6 and use UEFI boot. ASFAIK there is no direct migration path between 5 legacy boot to 6 UEFI boot. I would like to know how much of the old host I can migrate? Can i transfer the statistics as well?
I assume copying the /etc/pve/* should cover the VM/LXC configuration migration. My machines are on NAS so the VM migration should be smooth.
Is there anything else I have to copy?
Any other advise how to migrate the host configurations?
Thanks.
 
save /var/lib/pve-cluster/config.db, you'll have the full /etc/pve.

reinstall server (same hostname, same ip)

after boot, stop corosync && pve-cluster

copy back config.db

reboot

and it should be ok.
 
ASFAIK there is no direct migration path between 5 legacy boot to 6 UEFI boot.

As with all in the Linux environment: sure there is way, but it is very time consuming and you need a live linux to do so (it involves moving your root and boot partition, which cannot be done on a live system if partitions are involved), the easiest and fastest way described @spirit already and I recommend that also.

Don't mind me asking: Why do you want to move to EFI if you already have a working system? I don't see the point in that besides "I want to". UEFI has no advantages in running PVE whatsoever and "you never change a running system".
 
Don't mind me asking: Why do you want to move to EFI if you already have a working system? I don't see the point in that besides "I want to". UEFI has no advantages in running PVE whatsoever and "you never change a running system".

This is my homelab and I will have a free weekend so ... :). Seriously though the main reasons I want to move to UEFI is - systemd-boot - really easy to manage and configure. If they used the grub for UEFI bootloader I wouldn't be so keen. I never got the hang of grub and I am scared of breaking anything every time I touch it.

Anyway the system is a couple of years old and I have messed with it a lot so clean install will be beneficial. @spirit thanks for the hint.
 

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