Problem with mpt(4) and Infortrend RAID

[Rong-En Fan]

On Fri, Feb 18, 2005 at 03:17:46PM +0800, Rong-En Fan wrote:
> On Fri, Feb 18, 2005 at 03:04:00AM +0800, Xin LI wrote:
> > Have you got a chance to test this, I have gotten some similar problem
> > and got rid of them with the following patch applied (credit goes to
> > gibbs@ who fixed this last November):
> > 
> > http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/cam/cam_xpt.c.diff?r1=1.142&r2=1.142.2.2
> > 
> > This might be important since I think this has affected many users who
> > wants to use multiple LUN's, and thus warrants a new errata candidate
> > for 5.3-RELEASE.
> > 
> > Thanks in advance!
> 
> I have tested this with 5.3-p5:
> 
> 1. 2 LD -> 1 channel, 320MB/s ok     (with patch)
> 2. 2 LD -> 1 channel, 320MB/s failed (without patch)
> 
> I simulate io by benchmark/blogbench

This box now serves as NFS server with 20 clients.
and has some heavy io (about 30MB/s, lasting for 5 hours
or so) with this patch works fine. (2 channels,
each channel is 1 LD running at 320MB/s). Though you said
this patch solves multiple LUN problem, I think this
also solve my problem here.

Please consider merge to RELENG_5_3. Thanks.

Regards,
Rong-En Fan