ZFS on ZFS (Truenas on Proxmox)

[Stux]

@Kevin_Pavesi

This worries me a lot. Especially if the corruption of the entire Truenas datastore happens suddenly and without warning.

As soon as proxmox decides to locally mount the zfs disks while they are mounted by the TrueNAS instance they are toast.

EDIT: here is just one example:

Can't import datapool

Hey @Gilfoyle - I remember trying to help out in Discord on this one. Guessing the pool is still unmountable? Proxmox isn’t supposed to grab pools without the cachefile set to its own /etc/zfs/zpool.cache path (TrueNAS uses /data/zfs/zpool.cache) but Proxmox also appears to have a system service that will import pools on disk scan. So if there’s something that triggers a disk scan on a host and the member disks are visible this is likely to cause the simultaneous access/force-import bug. Isolat…