James Ray wrote:
[2.] Full description of the problem/report:
Been having problems with the AHCI driver for this new server for quite
some time now, it slowly seems to be getting better as the version
numbers increase (2.6.15 seemed fine, though I didn't test much,
2.6.1[7-8] was unusable, 2.6.20-rc6 seems nearly perfect) but I still
see some errors appearing on the system. I have swapped disks in the
system and I see the problem with 3 different systems (all identical)
and 3 different sets of disks.
Good to hear that we suck less, over time, I suppose :)
This is the error message that appears:
Jan 31 10:01:50 termite kernel: ata2.00: exception Emask 0x10 SAct
0x7fffffff SErr 0x80002 action 0x2 frozen
Jan 31 10:01:50 termite kernel: ata2.00: (irq_stat 0x08000000, interface
fatal error)
Jan 31 10:01:50 termite kernel: ata2.00: cmd
61/00:00:51:8f:ab/04:00:02:00:00/40 tag 0 cdb 0x0 data 524288 out
Jan 31 10:01:50 termite kernel: res
40/00:4c:51:9b:ab/00:00:02:00:00/40 Emask 0x10 (ATA bus error)
Jan 31 10:01:50 termite kernel: ata2.00: cmd
61/00:08:39:47:ab/04:00:02:00:00/40 tag 1 cdb 0x0 data 524288 out
Jan 31 10:01:50 termite kernel: res
40/00:4c:51:9b:ab/00:00:02:00:00/40 Emask 0x10 (ATA bus error)
Jan 31 10:01:50 termite kernel: ata2.00: cmd
61/00:10:51:93:ab/04:00:02:00:00/40 tag 2 cdb 0x0 data 524288 out
Jan 31 10:01:50 termite kernel: res
40/00:4c:51:9b:ab/00:00:02:00:00/40 Emask 0x10 (ATA bus error)
Jan 31 10:01:50 termite kernel: ata2.00: cmd
61/00:18:39:43:ab/04:00:02:00:00/40 tag 3 cdb 0x0 data 524288 out
Jan 31 10:01:50 termite kernel: res
40/00:4c:51:9b:ab/00:00:02:00:00/40 Emask 0x10 (ATA bus error)
This really looks like some sort of cable or power problem, or some
other hardware problem.
HOWEVER... once thing you might try is disabling NCQ
(http://linux-ata.org/faq.html#ncq) in case its a device with a buggy
NCQ implementation.
Jeff
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