CK804 SATA Errors (still got them)

[Alistair John Strachan <s0348365@sms.ed.ac.uk>]

Hi Robert,

Despite all the work that went into making these less frequent with ADMA,
they're still possible to trigger.

alistair@damocles:~$ cat /proc/version
Linux version 2.6.21-rc2-damocles (root@damocles) (gcc version 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)) #1 SMP Wed Feb 28 21:58:41 GMT 2007

alistair@damocles:~$ dmesg | tail -n 13
ata1: EH in ADMA mode, notifier 0x0 notifier_error 0x0 gen_ctl 0x1501000 status 0x500 next cpb count 0x0 next cpb idx 0x0
ata1: CPB 0: ctl_flags 0xd, resp_flags 0x1
ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
ata1.00: cmd ca/00:38:ae:08:c2/00:00:00:00:00/e0 tag 0 cdb 0x0 data 28672 out
         res 40/00:00:01:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout)
ata1: soft resetting port
ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata1.00: configured for UDMA/133
ata1: EH complete
SCSI device sda: 488397168 512-byte hdwr sectors (250059 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: write cache: enabled, read cache: enabled, doesn't support DPO or FUA

These cause the same ~30 second stalls. Machine was not under load.

No 3rd party modules were loaded.

-- 
Cheers,
Alistair.

Final year Computer Science undergraduate.
1F2 55 South Clerk Street, Edinburgh, UK.