Hi,
i am running
| FreeNAS-9.10.2-U6 (561f0d7a1) |
---|
What is the best/safest way to upgrade it to the latest stable version? I have encryption on drives... and i don't have backup of all data ... as storage is huge... is it safe/possible to upgrade?
thanks
If I remember correctly, there was a change in the encryption format for the geli key.
I have had issues when I upgraded to Corral and later as encryption was not properly supported, as is not recognizing redundnat drives in a RAIDZ-n configuration, causing the pool to loose redundancy. But as mentioned on this post, most of the trouble related to encrypted volumes/drives seem to have been resolved.
I always find it nerve wrecking, though.
As long as you do not upgrade the pool to the newer zfs tags, then you always have the capability to boot from the previous stable version. If running off a USB key, I could suggest you make make the boot drive a mirror by either adding another USB key or better yet a SSD. Your chances of boot corruption would be reduced and this approach will give you an easier path to recovery. A new boot install and loading the backup config is fine but more problems proned, unless you can backup the .ssh and related folders.
If you loose redundancy due to loss of the parity drives, I would suggest you revert back to the previous stable version and let it resilver before moving forward.
I would also suggest to remove the passphrase so that on every reboot the volume is made available ( I think ).
Not having a backup makes it a more challenging task and before anything else, you must remember you shouldn't rush things in.
The migration will look, at times, as if the system is no longer responsive, could be a few minutes to an hour possibly, especially when the pool is being imported. So don't try to force a restart on a wimp as you could jeopardize your data.