Scrub Stuck on 56.67%

[claynz]

My NAS unit has been stuck on Scrub at 56.67% for a few days now, how do I fix this?

[StephenB]

---

@claynz wrote:

My NAS unit has been stuck on Scrub at 56.67% for a few days now, how do I fix this?

---

Rebooting will cancel it, though of course then you won't know what is hanging it up.

You could query the status with ssh, if that is enabled.

[claynz]

How do I query the status with ssh, I think it's enabled.

[StephenB]

---

@claynz wrote:

How do I query the status with ssh, I think it's enabled.

---

Log in as root, using the NAS admin password.

There are actually two scrubs going on in parallel - btrfs and RAID.

To check the RAID status you can enter

cat /proc/mdstat

There should be a line in there that shows resync status (and estimated finish time).

To check the BTRFS scrub status you can enter

btrfs scrub status /data

(assuming XRAID here - use your actual volume name if you are using FlexRAID).

If you have disk spindown enabled, it might go faster if you disable it for a while.  Another thing you might consider is downloading the log zip file from the admin ui, and look for any btrfs or disk-related errors.