How to recover from 100% disk use

[ioB_Newcomer]

pool: Backup_Storage
state: DEGRADED
status: One or more devices has experienced an unrecoverable error. An
attempt was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the errors
using 'zpool clear' or replace the device with 'zpool replace'.
see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-9P
config:

NAME STATE READ WRITE CKSUM
Backup_Storage DEGRADED 0 0 0
sdb DEGRADED 0 0 0 too many errors

errors: No known data errors

 

[TErxleben]

!! EVERYTHING AT YOUR RISK!!
I would do the following:

- identify the affected disk with zpool status -x (see also link in your posted message)
- Replace the cable on this plate.
- zpool clear Backup_Storage <diskwitherror>. After that the status should be changed from DEGRADED to ONLINE. Check this with zpool status.
- Observe the system for a while. If the error no longer occurs, then the matter is over.
- If the error still occurs again, replace the disk (see link).
- Now you can run zfs set reservation=2g Backup_Storage.

 

[ioB_Newcomer]

It work'd for now. I will have a look at the storage, if the error message comes again.

 

[waltar]

Pool Backup_Storage has just 1 disk (sdb) ...

 

[TErxleben]

Pool Backup_Storage has just 1 disk (sdb) ...

How do you know that the pool only consists of one plate?

 

[waltar]

See post #21.

 

[TErxleben]

See post #21.

Oh, I read that too quickly. Let's keep our fingers crossed for ioB_Newcomer that, in the worst case scenario, he doesn't have to convert his single disk into a RAID1 or copy it with CloneZilla.