Parity & sometimes Parity2 disk are disabled

[Brucey7]

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

[JorgeB]

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, 2017 by johnnie.black

[Brucey7]

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

[Brucey7]

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, 2017 by Brucey7