Another "cant remove device" topic

TrueNAS General
1

Hey
There lots of them and sadly none of them helped so maybe some1 may help here…

config:

        NAME                                      STATE     READ WRITE CKSUM
        vol_CGI                                   ONLINE       0     0     0
          raidz2-0                                ONLINE       0     0     0
            b357627a-94ff-11e7-a318-001b218a1abc  ONLINE       0     0     0
            b3d09948-94ff-11e7-a318-001b218a1abc  ONLINE       0     0     0
            ea158ffc-0349-11ec-8729-90e2ba0a51a8  ONLINE       0     0     0
            b4cfbb14-94ff-11e7-a318-001b218a1abc  ONLINE       0     0     0
            b54e9f8c-94ff-11e7-a318-001b218a1abc  ONLINE       0     0     0
        cache
          sdj1                                    FAULTED      0     0     0  corrupted data

root@truenas[~]# zpool remove vol_CGI sdj1
cannot remove sdj1: no such device in pool

Can't remove my broken cache disk. How can I do dis? :c
25.04.2.3
2

Whats happens if you do this through the GUI?

3

Can’t do it via gui, the entity is invalid selecting it does not give context option for that entry and cant delete the cache :c

4

img

5

/dev/sdj1 rather than just sdj1 would likely do the job. But you really aren’t giving us much to work with here.

1 Like
6

Please don’t crop the output.

What is the full output of zpool status -v Vol_CGI?

7 
root@truenas[~]# zpool status -v vol_CGI
  pool: vol_CGI
 state: ONLINE
status: One or more devices could not be used because the label is missing or
        invalid.  Sufficient replicas exist for the pool to continue
        functioning in a degraded state.
action: Replace the device using 'zpool replace'.
   see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-4J
  scan: scrub repaired 0B in 12:09:56 with 0 errors on Sun Aug 24 12:10:18 2025
config:

        NAME                                      STATE     READ WRITE CKSUM
        vol_CGI                                   ONLINE       0     0     0
          raidz2-0                                ONLINE       0     0     0
            b357627a-94ff-11e7-a318-001b218a1abc  ONLINE       0     0     0
            b3d09948-94ff-11e7-a318-001b218a1abc  ONLINE       0     0     0
            ea158ffc-0349-11ec-8729-90e2ba0a51a8  ONLINE       0     0     0
            b4cfbb14-94ff-11e7-a318-001b218a1abc  ONLINE       0     0     0
            b54e9f8c-94ff-11e7-a318-001b218a1abc  ONLINE       0     0     0
        cache
          sdj1                                    FAULTED      0     0     0  corrupted data

errors: No known data errors
root@truenas[~]#
8

When you tried what @dan suggested, what error did you get?

zpool remove vol_CGI /dev/sdj1

If that doesn’t work, please post the full output of this instead:

zpool status -gv Vol_CGI
1 Like
9

That finally workerd, thank you!