[SOLVED] Splitting existing pool

[pwind]

Hello!

I've run into a problem where I have a raidz-2 pool with 6 devices of whom 4 are 1TB and 2 just 500GB.


In order to use most of these disks, the best solution would probably be to split this pool in two. I'm thinking I could keep this pool as is - raidz2, but detach the two 500GB disks (leaving me with a raidz2 bool consisting of 4 1TB disks) and create a new mirror pool with the two 500GB disks.

So, in theory, my actions should be something like this:
zpool offline pool wwn-0x5002538e09670244
zpool offline pool wwn-0x5002538e09670229
zpool detach pool wwn-0x5002538e09670244
zpool detach pool wwn-0x5002538e09670229
zpool zpool create -f -o ashift=12 mirror_pool mirror wwn-0x5002538e09670244 wwn-0x5002538e09670229

fdisk -l output for these devices:


Is that it or is there anything else I should do?

Also, since I'm inexperienced with these things, I'm a bit concerned about any possible damage to existing data - would there be any danger to existing data while performing these actions, or will my VM's stay the same?


Any help would be greatly appreciated, thanks in advance.

 

[ph0x]

You can only detach vdevs from a raidz, therefore you have to setup your pool from scratch.

 

[pwind]

You can only detach vdevs from a raidz, therefore you have to setup your pool from scratch.

Dang, so that means that the only option is to

zpool destroy -f pool

, then create two new pools (raidz-2 and raid1 (mirror)), and reset all VM's and CT's via backup files?

 

[ph0x]

Exactly, or migrate the images away on an interims storage.

 

[pwind]

Exactly, or migrate the images away on an interims storage.

Ok, got it, and thanks for the quick replies.