[SOLVED] I messed up my zfs vmpoool

[diversity]

I started out with;

  pool: vmpool
 state: ONLINE
config:

        NAME                                      STATE     READ WRITE CKSUM
        vmpool                                    ONLINE       0     0     0
          mirror-0                                ONLINE       0     0     0
            nvme-WDS100T1X0E-00AFY0_204540802523  ONLINE       0     0     0
            nvme-WDS100T1X0E-00AFY0_204540802590  ONLINE       0     0     0
          mirror-1                                ONLINE       0     0     0
            nvme-WDS100T1X0E-00AFY0_20465F800961  ONLINE       0     0     0
            nvme-WDS100T1X0E-00AFY0_204540802025  ONLINE       0     0     0

then I detached one disk because I thought it might be a bad ssd disk as sometimes it would not register and the whole system is slow to start and the pool is degraded.
resulting in;

 pool: vmpool
 state: ONLINE
  scan: resilvered 1.20M in 00:00:00 with 0 errors on Fri Jul 30 09:51:54 2021
config:

        NAME                                      STATE     READ WRITE CKSUM
        vmpool                                    ONLINE       0     0     0
          mirror-0                                ONLINE       0     0     0
            nvme-WDS100T1X0E-00AFY0_204540802523  ONLINE       0     0     0
            nvme-WDS100T1X0E-00AFY0_204540802590  ONLINE       0     0     0
          nvme-WDS100T1X0E-00AFY0_204540802025    ONLINE       0     0     0

Then I wanted to give it another try after reseating the ssd. So I used this command.
zpool add vmpool /dev/nvme2n1
resulting in

  pool: vmpool
 state: ONLINE
  scan: resilvered 1.20M in 00:00:00 with 0 errors on Fri Jul 30 09:51:54 2021
config:

        NAME                                      STATE     READ WRITE CKSUM
        vmpool                                    ONLINE       0     0     0
          mirror-0                                ONLINE       0     0     0
            nvme-WDS100T1X0E-00AFY0_204540802523  ONLINE       0     0     0
            nvme-WDS100T1X0E-00AFY0_204540802590  ONLINE       0     0     0
          nvme-WDS100T1X0E-00AFY0_204540802025    ONLINE       0     0     0
          nvme2n1                                 ONLINE       0     0     0

errors: No known data errors

But I wanted to recreate the stripped mirror I had originally and now I can't remove the disk to try again but am getting this.

zpool detach vmpool nvme2n1
cannot detach nvme2n1: only applicable to mirror and replacing vdevs

How do I reconfigure the vmpool to it's original state?

 

[leesteken]

If you are on a recent Proxmox version you might be able to use the remove command which was only added to ZFS(onLinux) recently (I think).
Can you try zpool remove vmpool nvme2n1?

 

[diversity]

great, thank you

  pool: vmpool
 state: ONLINE
  scan: resilvered 1.20M in 00:00:00 with 0 errors on Fri Jul 30 09:51:54 2021
remove: Removal of vdev 2 copied 23.3M in 0h0m, completed on Sat Jul 31 09:59:12 2021
        11.7K memory used for removed device mappings
config:

        NAME                                      STATE     READ WRITE CKSUM
        vmpool                                    ONLINE       0     0     0
          mirror-0                                ONLINE       0     0     0
            nvme-WDS100T1X0E-00AFY0_204540802523  ONLINE       0     0     0
            nvme-WDS100T1X0E-00AFY0_204540802590  ONLINE       0     0     0
          nvme-WDS100T1X0E-00AFY0_204540802025    ONLINE       0     0     0

now how to recreate the original situation?

 

[leesteken]

Attach the drive to the pool and drive you want to mirror: zpool attach vmpool /dev/disk/by-id/nvme-WDS100T1X0E-00AFY0_204540802025 /dev/disk/by-id/nvme-WDS100T1X0E-00AFY0_20465F800961.

 

[diversity]

awesome, thanks a bunch!!