Comment 11 for bug 550559

moojix (moojix) wrote :

I had the same ugly ata errors with my Asus P7P55D-E Premium and a Crucial C300 SATA drive.
lspci: SATA controller: Device 1b4b:9123 (rev 10)

my workaround: disable NCQ and now I can use my SATA3 drive through the Marvell 9123 controller of my MoBo.
(see: http://ubuntuforums.org/showpost.php?p=9684933&postcount=12)
I tested this workaround with iozone3 without any errors.

before this workaround:
Aug 6 09:58:08 st-002 kernel: [ 3.249455] ata5.00: ATA-9: C300-CTFDDAC256MAG, 0002, max UDMA/100
Aug 6 09:58:08 st-002 kernel: [ 3.249461] ata5.00: 500118192 sectors, multi 1: LBA48 NCQ (depth 31/32), AA

after this workaround:
Aug 6 10:01:36 st-002 kernel: [ 3.369991] ata5.00: ATA-9: C300-CTFDDAC256MAG, 0002, max UDMA/100
Aug 6 10:01:36 st-002 kernel: [ 3.369996] ata5.00: 500118192 sectors, multi 1: LBA48 NCQ (not used)

I have not found, if this bug is patched in any linux kernel yet (I'm using 2.6.32-24 64-bit).