panic with high kern.cam.boot_delay value

Alexander Motin mav at FreeBSD.org
Fri Nov 5 19:06:24 UTC 2010


Hi.

Alexander Best wrote:
> i just stumbled upon a panic in connection with a very high kern.cam.boot_delay
> value (=100000). this is on HEAD (r214809; amd64). unfortunately i couldn't
> enter the debugger, because the panic occured before my usb keyboard attached.
> 
> the panic however occured in sched_priority(). can anybody reproduce this? just
> before the panic i saw some xpt_* message in connection with a 60 second delay.

I have feeling that it is related not to CAM, but to new event timers
infrastructure and SCHED_ULE. I have one report about panic in
sched_priority() on virtual machine. Unluckily, I can't reproduce any of
cases.

-- 
Alexander Motin


More information about the freebsd-scsi mailing list