CORE to SCALE 21.08-Beta and back question

[MyVizDrake]

Hi !

Been running FreeNAS / TrueNAS Core for about 5 years ....

If I do the installation / conversion to SCALE from CORE, understanding of course that my jails won't work in SCALE ... once SCALE is installed and assuming I don't do ZFS feature flag upgrades post-install in SCALE, I could switch back to CORE at will?

If yes, would I need to export / import the pool each time?

Thanks in advance!

Scott

 

[morganL]

Yes, that should work, but it has not been tested. Migration from SCALE to CORE is not a priority for BETA.
You should only try if your data is replicated elsewhere. Pool snapshots might also simplify recovery.

 

[sretalla]

It's probably worth noting that 21.08 (and maybe previous versions too) has a higher version of Open ZFS, hence also feature flags, so bringing a pool back to CORE is probably a no-go for that reason (unless the pool was created on CORE and you resist the temptation to upgrade the pool on SCALE).

 

[c77dk]

with a recent backup from CORE (and as @sretalla wrote: no new pool / zfs flags) you can rollback by reinstalling CORE and importing backup config, if changing BE doesn't work.

 

[MyVizDrake]

I can resist the temptation to update the pool

I am going to create a CORE VM with a recreated Syncthing and Plex jail with data on it and see what happens when I “Upgrade” to SCALE

Going to take some time to set that up.

I am interested to explore the migration from Plex / Syncthing iocage jails to TrueCharts Apps.

Thanks!