Re: [Bugme-new] [Bug 7130] New: loading driver eat all CPU and since some time may block all system disk IO (even can not reboot)

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From: James Bottomley <James.Bottomley@xxxxxxxxxxxx>
Date: Sat, 09 Sep 2006 11:04:15 -0500

> On Sat, 2006-09-09 at 08:36 -0700, Andrew Morton wrote:
> > Does anyone else us the fcal driver?
> > 
> > I'd suggest the next step would be to run a kernel profile, or just sysrq-P
> > to find out where the CPU is stuck.  Could a sparc person please talk the
> > reporter through that process?
> 
> I'm not sure this is really worth it.  Apart from trying to keep it
> compiling, fcal has had no maintainer since the 2.2 kernel days.  Since
> no-one has the hardware or the inclination, it's not plugged into the
> SCSI FC infrastructure and thus it's bitrotting.

I think it's not feasible nor worth plugging the fcal driver into the
SCSI FC infrastructure right now simply because these drivers need a
full software FC stack, and the SCSI FC stuff just provides very high
level interfaces to all of this an expects on-board firmware to do all
the protocol packet building and other FC stuff just like the
Qlogic-FC and other cards do.

So it's not just a matter of "porting fcal to SCSI FC", someone would
need to implement the full FC software stack.

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