Procedure to move from striped mirror to single mirror

[crazyj]

I've currently 4x 500GB drives in a striped mirror. I'm wanting to move these over to 2x 4TB disks since I'm running short on room. What's the procedure to accomplish this? I have extra slots, so all disks reside in the server currently. Is it possible to mirror to the 4TB, then remove the 500GB disks?

 

[ttabbal]

Create a new pool using the 4TB mirror. zfs send/recv to copy the data. Unmount the old pool and pull the drives as backups or use them for whatever your plan is.

Note that it needs to be a new pool. If you add them to the existing pool, you will have to reformat everything to undo it. You can rename the pool later if desired.

 

[crazyj]

And is this handled anywhere in the GUI, or am I needing to do command line?

 

[ttabbal]

You should ask @gea that. I haven't used napp-it in a while so I'm not sure. I would think you could at least do the pool management stuff from the GUI, but I'm a CLI guy myself.

 

[gea]

Can all be done in napp-it
Create a new pool from a mirror, then create a replication job to transfer filesystems from your raid-10 to the new mirror. Then export both pools and import the mirror under the former poolname of the raid-10.

If you want to preserve the exact same pool layout:
As a replication always creates a filesystem below another filesystem you cannot replicate the whole pool but must for example replicate single filesystems ex oldpool/filesystem -> newpool to get newpool/filesystem. If you replicate the whole pool recursively you get newpool/oldpool/filesystem.

 

[crazyj]

Is the end result the same? I did a send/receive and haven’t double checked data but I assume it all went to plan.

 

[gea]

yes