[PVE-User] local zfs storage and migration with different pool names

[Bryan Fields]

I've built a new hypervisor to add to my cluster of older hypervisors.  As 
part of this, I decided to place the root pool as a mirror across two NVME 
disks and make the local ZFS a pool of 5 2 disk mirrors with NVME for special 
devices in a mirror.  This of course means I have rpool for the 128g boot 
drive and then localStoragePool/data for the local ZFS storage.

I ran into the issue of Proxmox not supporting this configuration [1] and then 
down the rabbit hole of why and how to solve it.  Online migration works, but 
offline and replication doesn't.  This is a big problem and I'm surprised 
there's no way to alias storage in storage.conf.  That being what it is, and 
me being stuck with my old servers for some time I don't have many options.

The current servers are 8 SAS devices in a raidz2 pool as rpool.  Nothing 
fancy, no special devices, and it boots (MBR, not EFI as it's not supported). 
What I'd like to do is rebuild/upgrade these servers and since the pool must 
be named the same, I was thinking of having a small rpool of 64gb per disk and 
then the rest of the disk as localStoragePool.  I know that they say you 
shouldn't have two pools on the same physical device, but the rpool doesn't do 
anything other than logging and /etc/pve database stuff.

Has anyone else done this or solved this problem in another way?


[1] 
https://forum.proxmox.com/threads/replication-with-different-target-storage-name.35458/
[2] https://bugzilla.proxmox.com/show_bug.cgi?id=2087

-- 
Bryan Fields

727-409-1194 - Voice
http://bryanfields.net