I am running 6.8.3 and had a disk fail (Disk 5)

 

Replaced disk OK and left array to rebuild, this has just completed but I have 475 million errors in Disk 3

 

Please find attached diagnostic file

backup-diagnostics-20200412-2156.zip

Disk 3 has disconnected. You probably disturbed the connections when you replaced the disk. Are you sure there was really something wrong with that original disk5? Disabled disks have many causes and bad disks are often not the cause.

Yes I tried connecting Disk 5 to another PC and it was not detected.

Check all connections, power and SATA, both ends, including any power splitters. Then post new diagnostics.

In case it's not obvious, stop the rebuild, it isn't working. You will have to try again after fixing the connections and posting diagnostics.

I tried omitting the disk 3 , restarting the array, stopping the array and restarting again to force the disk to be rebuilt

 

However I kept getting a message about a fault on md5 and to run an xfs repair.

 

I had to reboot the array as the terminal I had attached to the server had gone blank, and if I call up a command prompt window it is blank?

 

Run xfs repair and it found corruption and carried out repair.

 

I am now carrying out a data rebuild on Disk 3 again with 7 hours to go. 

 

I attach a new diagnostics file, I realize that this may not show anything as the array has been rebooted

backup-diagnostics-20200413-0111.zip

Disk 3 rebuilt OK and the array is up and running.

 

So it appears that an xfs fault in md5 was causing problems for disk 3 to rebuild?

3 hours ago, clevoir said:

So it appears that an xfs fault in md5 was causing problems for disk 3 to rebuild?

No, parity doesn't know or care about xfs, it is all just bits. Possibly whatever caused the xfs corruption (bad connection, etc) was causing problems for the rebuild.

Thanks for your reply, thankfully the array is now back up and working with no errors

now go make a backup of your important stuff.

Disk 3 was disabled again overnight, it is an infamous Seagate ST20000DM0001 and about 5 years old

 

I have taken it out of the array and am now doing a preclear to test it.

 

Prior to that I have checked all SATA and power connectors, and reseated my HBA cards