Occasionally, my system hits an unrecoverable disk error, always on the parity disk, sometimes on the parity2 disk, usually billions of reads and a few failed writes seems to be the same sector if both disks.  A New identical config and a rebuid and it's ok.

 

File attached, any ideas anyone?

Bruce

tower2-diagnostics-20171020-2018.zip

Simultaneous errors on both:

 

Oct 20 20:13:27 Tower2 kernel: md: disk0 read error, sector=4580201424
Oct 20 20:13:27 Tower2 kernel: md: disk29 read error, sector=4580201424
Oct 20 20:13:27 Tower2 kernel: md: disk0 read error, sector=4580201432
Oct 20 20:13:27 Tower2 kernel: md: disk29 read error, sector=4580201432

 

They are both on the same controller, and on the same breakout cable, I would try replacing or swapping that cable first, also check the power connections, if issue persists swap them to another controller.

 

 

Edited October 22, 20178 yr by johnnie.black

Thanks, I'll start with a new cable and take it from there

I fitted a new cable and I think I got them on new ports, I had the same thing happen and lost parity, so I am rebuilding parity and will then move them onto a different controller.

 

I suspect it's either the controller, or more likely the 5in3 disk backplane, I've had this once before.

Edited October 23, 20178 yr by Brucey7