Stripped when I meant to mirror

[Rusky]

I have my jail running off of a ssd

I just installed a second ssd with the intention of running them in a mirror in case one failed. I clicked through the volume manager too quickly and selected strip instead of mirror.

Anyway to undo this? Ultimately I just want to mirror the jail between both SSDs

If it helps I have a snapshot of the jail

UPDATE:
I got it fixed thanks to this thread
https://forums.freenas.org/index.ph...to-move-my-plugin-jail-to-another-pool.32906/

I attached a 3rd SSD and created a new volume then did the below steps

Assumptions:

The pool you are transferring the jails from is main_pool
The destination pool is ssd_pool
The jail root (Jails->Configuration) is /mnt/main_pool/jails
The new jail root will be /mnt/ssd_pool/jails

Steps:

Turn off all plugins (Plugins->Installed)
Stop all jails (Jails->View Jails)
Run these commands via CLI:[PANEL]zfs snapshot -r main_pool/jails@relocate
zfs send -R main_pool/jails@relocate | zfs receive -v ssd_pool/jails
zfs get -rH -o name -s received mountpoint ssd_pool/jails | xargs -I {} sh -c "zfs set mountpoint=/{} {}; zfs mount {};"[/PANEL]
Change the Jail Root to /mnt/ssd_pool/jails (Jails->Configuration)
Start jails/plugins
Check that everything works and destroy the original jails dataset (main_pool/jails)

Once I confirmed the jail was up and running on the new SSD, I destroyed the old volume and rebuilt it in a mirror.
Then I reversed the steps to move it from the new SSD back onto the mirrored volume

 

[sfcredfox]

I'm pretty sure there are some posts that say you're rebuilding your pool if you misconfigure a vdev. I haven't seen anything talking about the ability to reconfigure then.

I can't really say how you'd transfer the files between pools, but I have copied a dataset between pools with zfs send/receive I think, been a while.
You could probably copy the dataset for the jails to another pools, recreate your SSD pool, then transfer back.

Someone else might need to back this up though

 

[kdragon75]

You would need a third disk. Or you could use send and receive to backup to another pc then destroy the pool and rebuild/restore.

@sfcredfox better said than me. But yeah if you have another pool and the space you can just "move" the dataset over and back.

 

[Rusky]

I found this post, would it work?

https://redmine.ixsystems.com/issues/3703 or http://techblog.danielpellarini.com/sysadmin/how-to-convert-a-stripe-into-a-mirror-in-freenas/

 

[sfcredfox]

I can't say if those instructions work or not, but I'd make a backup just in case, and then trying it is your call. I'd be interested to know if you can replicate their success though

 

[Rusky]

I can't say if those instructions work or not, but I'd make a backup just in case, and then trying it is your call. I'd be interested to know if you can replicate their success though

I'll make a backup of the jail and try converting it into a mirror

But if I'm understanding what you said correctly

- Stop my plugins
- Copy the contents of my jail that's on the striped SSDs onto a 3rd SSD
- Wipe the volume the jail is one
- Properly setup the original 2 SSDs in mirror
- Copy the files off the 3rd SSD into the new mirror
- Start plugins

 

[MrToddsFriends]

I found this post, would it work?

https://redmine.ixsystems.com/issues/3703 or http://techblog.danielpellarini.com/sysadmin/how-to-convert-a-stripe-into-a-mirror-in-freenas/

Remember that in ZFS terminology a single disk is called a stripe, too. The issue report and the guidance you posted are about converting a single disk vdev to a mirror vdev. AFAICT, converting a two-disk stripe into a two-way mirror indeed involves backing up and creating a new pool from scratch.

 

[Rusky]

Alright guys I did it, had to move it off and back

For anyone who stumbles across this thread in the distant future I'll update my original post with the steps