Re: Reset Problem with SATA Port Multiplier

Bob Bawn <[email protected]>
Newsgroups gmane.os.freebsd.devel.hardware
Message-ID <[email protected]>
On Thu, Jul 25, 2013, Dieter BSD <[email protected]> wrote:

> Sounds like FreeBSD is doing something bad to the pm, which Linux isn't
> doing. Perhaps log the commands the OS sends to the controller (over the
> network to a 2nd machine, or to a local disk not on a pm) and compare
> BSD to Linux?  Perhaps start logging when you get the first timeout, to
> save hours of commands to wade through.

Yes, that occurred to me. I was hoping to avoid learning how to build
kernels with debug messages but I suppose it's a good skill to have. :-)

> Alternately you could stare at the driver sources until enlightenment
> occurs.

I did a little of this and superficially it does seem like there could
be differences between FreeBSD and Linux in the treatment of the
mysterious 6th port (SEMB) on the 5-port multiplier. Hopefully, the
logging you suggest will clarify the situation.

Thanks for your help.

_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-hardware
To unsubscribe, send any mail to "[email protected]"
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.