[CLUE-Tech] Linux and SANs

[Jeremy Huber]

On my mailserver for work, I've got a Dell Poweredge 6450 and a Powervault
650/630 setup.  It's technically still a SAN, even though the cable is
direct to the PV rather than through a switch.  Other than setting the
Qlogic card to peer mode so it doesn't try to find a switch, I didn't have
to do anything for it to work under Linux.  I used the default RedHat
qla2200.o module, and it's been happy as a clam.  I prefer to use the module
instead of compiled in, so if I need to I can swap the module without
rebooting the server (as I've done once before).

Now, since there's no Linux apps to maintain the SAN, if I ever need to
change a configuration, I have to connect it to a Windows box. :/  If anyone
knows of an app, please let me know!

Jeremy
----- Original Message ----- 
From: <gager at mho.com>
To: <clue-tech at clue.denver.co.us>
Sent: Monday, July 28, 2003 9:55 AM
Subject: Re: [CLUE-Tech] Linux and SANs


> Thanks for the reply. Our software correctly identifies the SAN volumes if
we
> are using QLogics or Emulex cards so no worries there.
> I was wondering if people in production environments typically compile a
kernel
> with the drivers for the card or if they use modprobe as we do here. My
hunch
> is that people are compiling kernels which renders our test environment
invalid.
> Do have anyt ideas on this?
>
> Thanks again.
>
> RG
>
>
>
>
>
> &gt; Anyway, I was wondering if anyone here on the list has AS 2.1 boxes
> running in
> > &gt; Fibre Channel SANs?
> >
> > The City of Arvada was trying to do this. The biggest trouble they had
> > was that their SAN cards did not have drivers compiled for that kernel.
> > Damn binary only drivers. Once they got some drivers for AS kernels the
> > cards presented SCSI hard drives as if they were local drives.
> >
> > Check with the vendor of your SAN to see what card compatibility you
> > have and then grep the Hardware-HOWTO to see if it gives any info. The
> > best trick I've used it to type "linux &lt;your card model number
here&gt;"
> > into google. That usually brings up one other unlucky sap trying to do
> > the same thing. :)
> >
> > -- 
> > JStanley &lt;miah at miah.org&gt;
> > http://www.slavewage.com/
> >
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