[olug] ata8 identification

[Obi-Wan]

My kern.log has been filling up with a bunch of these errors lately:


Aug  1 22:02:36 tatooine kernel: [1393542.112033] ata8.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
Aug  1 22:02:36 tatooine kernel: [1393542.112038] ata8.00: failed command: FLUSH CACHE EXT
Aug  1 22:02:36 tatooine kernel: [1393542.112044] ata8.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0
Aug  1 22:02:36 tatooine kernel: [1393542.112046]          res 40/00:01:00:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout)
Aug  1 22:02:36 tatooine kernel: [1393542.112048] ata8.00: status: { DRDY }
Aug  1 22:02:36 tatooine kernel: [1393542.112053] ata8: hard resetting link
Aug  1 22:02:36 tatooine kernel: [1393542.112055] ata8: nv: skipping hardreset on occupied port
Aug  1 22:02:37 tatooine kernel: [1393542.580033] ata8: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
Aug  1 22:02:37 tatooine kernel: [1393542.692431] ata8.00: configured for UDMA/133
Aug  1 22:02:37 tatooine kernel: [1393542.692437] ata8.00: retrying FLUSH 0xea Emask 0x4
Aug  1 22:02:37 tatooine kernel: [1393542.692707] ata8.00: device reported invalid CHS sector 0
Aug  1 22:02:37 tatooine kernel: [1393542.692717] ata8: EH complete


How do I determine which of the 5 hard drives in my system is ata8?
Ubuntu 11.04, BTW.  Disk Utility doesn't list an ATA number for any
of the devices.  The SMART data for all 5 drives says they're OK.

I've been experiencing a lot of unreliabilitiy in the system lately --
processes like firefox or even doc apps dying spontaneously, etc.
I'm wondering if one of my drives is getting flaky and causing that.
However, I've got enough RAM that I almost never page, so I don't
think it's an issue of my swap partitions going bad.

-- 
Ben "Obi-Wan" Hollingsworth    obiwan at jedi.com    PrairieRimImages.com
   The stuff of earth competes for the allegiance I owe only to the
     Giver of all good things, so if I stand, let me stand on the
       promise that You will pull me through.  -- Rich Mullins