Hi!
Just wanted to say - in my case the AHCI timeouts (and therefor the
panics afterwards) were solved by updating the firmware of my SSDs.
[Corsair Force 3, 120GB, old firmware: 1.3, new firmware: 1.3.3]
Armin
On 10/28/11 01:19, Pegasus Mc Cleaft wrote:
If it's only one process, the machine (usually) doesn't hang, even
when that process is copying big files back and forth for a long
period of time (it's a backup process). But interleave that process
with another one accessing the same disk, and poof!, almost
immediately ahci timeouts. occur. Very strange... Maybe a race
condition of some sort after all?
No, I cannot say there is any specific correlation to IO load of the
machine,
timeouts I saw happen randomly and seem almost always happen as system
uptime
crosses two weeks boundary. I am suspecting Samsung firmware at this point.
Now that's interesting as I use a mixture of Samsung, WD, and Seagate.. And
I do believe the Samsungs tend to do this more. I see ACHI timeouts from
time to time on my machine (10-Current AMD64) but normally only when I am
doing something like a scrub. The machine has never panicked as a result of
this, it normally just FAULTS the drive in the pool and keeps on going. At
that point, doing a camcontrol rescan all does not bring the drive back into
existence (it will normally just hang on that bus for 15-20 seconds and then
carry on without identifying a drive). I have to pull the drive, let it spin
down and then reinsert it. Once its reinserted, the drive comes back on the
bus and I can online it again.
The weird thing is this.. For me, it only ever seems to be when I am writing
to the pool/disk. Pure reads don't seem to bother it.
I don't really know at this point if the SATA ports have gone wonkey on the
motherboard, or if the processor on the HD has crashed. I almost tend to
believe it's the drive because camcontrol stops on that port almost as it if
knows there is a link there, but can't talk to it.
Peg
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