Re: Problems w/ Sil3124 + Port Multiplier

[Tejun Heo <htejun@gmail.com>]

Lars Michael Jogbäck wrote:
> I have a system with a Sil3124 controller and two Sil3726 port multipliers.
> I'm running 2.6.18.1 with the patches from
> http://home-tj.org/wiki/index.php/Libata-tj-stable
> since I was not able to get the port multipler to work at all with
> 2.6.21 (perhaps the support for PMP is not fully integrated there).
> 
> One of my Sil3726 is freezing my system approx one time per hour when
> the disks are under load.
> 
> ata5.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
> ata5.00: tag 0 cmd 0xea Emask 0x4 stat 0x40 err 0x0 (timeout)

Hmmm... that's FLUSH_CACHE timing out.

> I suspect that the root-cause of the problem could be drive-related. All
> the disks on the other Sil3726 are WD4000KD's and the
> disks attached to this one is 3xWD4000KD and 1xWD4000KS and 1xSamsung
> HD501LJ. Is there a way of test this?

I think the disk attached to port 0 might be bad.  Please report the
result of 'smartctl -d ata -a /dev/sdX' where sdX is the device attached
to the failing port.

> Is there an updated patch-set for port multipliers in a later kernel
> than 2.6.18.1?

Sorry but not yet.

-- 
tejun