I run into troubles after trying to add more disks to my Ubuntu server device. While being a total beginner I powered the server off, added two more disks and restarted the system only to find one of the disks in the existing mirror "FAULTED".
matsojala@amatson:~$ zpool status -v pool: tank state: DEGRADED 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: http://zfsonlinux.org/msg/ZFS-8000-4J scan: scrub repaired 0B in 21h20m with 0 errors on Fri Feb 8 14:15:04 2019 config: NAME STATE READ WRITE CKSUM tank DEGRADED 0 0 0 mirror-0 DEGRADED 0 0 0 sdb ONLINE 0 0 0 12086301109920570165 FAULTED 0 0 0 was /dev/sdb1 errors: No known data errors
I tried to export and import based on this answer (ZFS pool degraded on reboot) but exporting fails
matsojala@amatson:~$ sudo zpool export -f tank umount: /tank: target is busy. cannot unmount '/tank': umount failed
I'm not sure which way I should try to replace the disk as the disk on the system is "part of active pool".
matsojala@amatson:~$ sudo zpool replace -f tank 12086301109920570165 sdc1 invalid vdev specification the following errors must be manually repaired: /dev/sdc1 is part of active pool 'tank'
Tried this too.
matsojala@amatson:~$ sudo zpool replace tank sdb /dev/sdb is in use and contains a unknown filesystem.
Any help? The disk was fully working before powering off, it is in the system named as /dev/sdc1 with ID "12086301109920570165". What should I do?