Turn 2-disk ZFS mirror into Single Disk setup without loosing data?

J

jbattermann

Active Member
Jul 26, 2021
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Hi there,

quick Q: I have been running a small homelab machine with Proxmox on it for the last couple of years and ran it with two additional quasi data SSDs in a ZFS mirror setup. One of those SSDs have failed and, given RMA/warranty not being a thing anymore and today's prices, I don't want to pay several thousands for a replacement.

Is there any way I can "turn" the zfs mirror into a single disk zfs setup without loosing the data? The remaining SSD is healthy & no data loss.. so I was wondering if there's a way to "convert" the mirror to a single disk one.

Thanks!

1791307996758.png
 
santiagobiali said:
Just detach it: zpool detach Swissbits /dev/disk/by-id/<disk-you-want-to-remove>
Click to expand...
Just to clarify; I believe that by /dev/disk/by-id/<disk-you-want-to-remove> , the poster refers to the non-working disk, so in your case I imagine that is the second nvme in that image above. This should cause the pool to be left with the single (working) first nvme, in a non-mirrored pool.

PLEASE NOTE: I do not use zfs!
 
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