Boot of Dell 1750 fails with multiple SCSI drives installed

[mho at pobox.com]

At Thu, 11 Dec 2003 17:46:15 +0900,
mho at pobox.com wrote:
> 
> 
> Hi,
> 
> >Just to add more data points.  Doug White sent me email with his
> >configuration.  Since he had no problems with Maxtor disks it sure
> >seems like the IBM disks are the culprit.
> >
> >> It was 2 PE1750s with two Maxtor disks with 4.9-RC[23].  Dual 2.8GHz or
> >> 2.4GHz Xeons I think.  Installed and built kernls on 2 of them with
> >> absolutely no issues.  These had the RAID card though but I disabled it in
> >> the BIOS.
> 
> I have experienced almost same behaviour with my 2 sets of DELL 1750.
> They could boot with single IBM disks but could not boot with more
> than two disks.
> 
> Following is the log from serial console of failed boot.  The 1750s
> will be around here for some weeks, so if anyone have some idea where
> to look at I will be able to try it.

  I managed to record kernel logs for both cases.  They are recorded
with mpt->verbose=2 . Those of you who might be interested in this
problem can get two files from URLs below.

	http://www6.ocn.ne.jp/~mho/1750singledrive.txt.gz
	http://www6.ocn.ne.jp/~mho/1750tripledrive.txt.gz

 It seems to me that mpt0 sends requests endlessly in the case of 3
drives. As for revisions of the hardware, from BIOS information, LSI
Logic 1030's revision is 1013D00 and IBM IC35L036's is S27F.

Regards,

Hori Masato