[ale] Stupid Linux Tricks...

[Eric Z. Ayers]

I've done something similar, when using an  SCSI card in a
multi-initiator environment, under linux you have to be careful.  

1) turn off the scan of the drives during boot in the Adaptec bios.  The
linux box may hang.

2) Make sure you install James Bottomley's SCSI reservation patch with
your kernel.  If you updated from the stock RedHat kernel, you lost it. 
I don't know about RH 7.0, but they used to include it with RH 6.2. 
This properly deals with SCSI resets, among other things.

-Eric.

Hunter Eidson wrote:
> 
> We've got an EMC Symmetrix 3430 here at work, connected via fiber to a
> couple of HP-UX boxes.  Our EMC also has several unused SCSI ports, and I
> thought I'd play with those and a couple of Linux boxes.  The Linux box I'm
> using for a test bed, is an Intel P3 with an Adaptec 2944UW SCSI card.  I've
> got the card configured so that it sees all 9 drives during the boot scan (3
> disks, and 6 gatekeepers), but RedHat Wolverine, RedHat 7.0, and SuSE 7.0
> all hang during the install.
> 
> If I do the install with the Symm's controller turned off, I can install w/o
> problems.  Then, when I start the RedHat 7.0 system after turning the Symm
> back on, it hangs during the SCSI driver init.
> 
> Getting EMC to give meaningful tech support is surprisingly difficult,
> considering how much yearly maintenance is...
> 
> Anyone had any luck trying to do something similar?  Any help is
> appreciated!
> 
>         --Hunter
> 
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