Mirror pool to stripe

[robles]

I no longer need the redundancy of a mirror pool, so I'd like to have two volumes using two physical disks.

Is there any way to wipe one of the drives and convert the mirror pool to stripe without having to copy all the files outside the mirror?

Thanks!

 

[jgreco]

You should be able to detach one of the drives from the mirror. Then it could be added as a new vdev.

 

[robles]

Thanks, would the pool change from mirror to stripe if I detach the drive? I'll try and simulate this tomorrow in a VM before trying it for good.

 

[robles]

Ok here's what I did:

zpool status
zpool offline vault gptid/0c2d26a2-a685-11e4-9317-000c296febaf
zpool detach vault 3460664433891973214
zpool status

I marked one of the drives as offline, then detached it and then looked at the status again to see if it had turned back to a single stripe vdev.
Then I used the GUI to create a new volume using the drive marked as new.

I hope this helps someone, if I did something wrong, please tell :)

 

[gpsguy]

You added a second volume to your server - not a stripe. Did you look at the output of zpool status after you finished.

If you wanted to stripe the drives, you'd want to extend the current volume. See "Extending a ZFS Volume" in the documentation.

Edit: disregard what I said. I kept seeing "stripe" mentioned. I just noticed you said you "like to have two volumes using two physical disks."

 

[robles]

Oh yes, that was what I intended, I didn't want to extend my existing volume, I wanted another mount point.

 

[danb35]

zpool status
zpool offline vault gptid/0c2d26a2-a685-11e4-9317-000c296febaf
zpool detach vault 3460664433891973214
zpool status

Glad that worked for you, but was there any reason you didn't just use the detach button in the web GUI?

 

[robles]

Well I didn't find the option in the GUI to detach the volume (I did find the "offline" button though), so I figured there had to be a way to do it with the zpool command.

The manual pages work wonders.