On Sun, 2007-04-01 at 16:29 -0400, Douglas Gilbert wrote:
> ...
> sas: phy3 added to port0, phy_mask:0x8
> sas: DOING DISCOVERY on port 0, pid:2110
> aic94xx: scb:0x80 timed out

This might be the problem.

I see this periodically when a phy goes out to lunch on my system ...
with me, it always seems to be phy0 of a port containing phy0-4 ... so
phy1-3 still function to get messages.

Can you try sending a link reset to phy3?

It should be something like

echo 1 > /sys/class/sas_phy/phy-X:3/link_reset

and see if it just produces 

aic94xx: scb:0x80 timed out

Again?

Thanks,

James


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