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RE: [Linux-cluster] Custom Anaconda to see 32 LUNS?



How does a blade know to boot from a specific lun?

Can you do a LUN-SAN mapping that would make a lun available to only one
specific blade each
under the correct name?


Michael
-----Original Message-----
From: linux-cluster-bounces redhat com
[mailto:linux-cluster-bounces redhat com] On Behalf Of
isplist logicore net
Sent: Thursday, March 15, 2007 11:13 AM
To: linux-cluster; anaconda-devel-list redhat com;
redhat-install-list redhat com
Subject: [Linux-cluster] Custom Anaconda to see 32 LUNS?

Is there anyone out there who might have a custom anaconda version which
could see at least 32 LUNS or more?

I have yet to find a way of installing blades onto 32 volumes which are
on a fibre channel storage device. I must find a solution and was now
told that I might be able to modify anaconda. Not knowing how to do
this, I wonder if someone might already have a modified version?

Mike

This was my old message, things I've done/tried which have not worked.

//
I've tried everything I can find and think of or that has been
suggested.

I have a Xyratex/MTI type chassis split into 32 volumes. I need to
install 32 blades onto each volume so that I can remove the drives on
each blade.

When I start a Linux install on a blade, it never sees all of the
volumes, only LUNS 0/1. I need to see all 32 LUNS so that I can install
all of my servers.

I've tried all of the following;

RHEL4, CentOS4.4, others. I don't really care what the distro is, so
long as it runs basic services such as web/php, qmail, etc. What I do
need however is that they be GFS/Cluster machines.

I've tried passing the information at the installers command line;

scsi_mod.max_luns=256
scsi_mod.scsi_dev_flags=INLINE:TF200:0x242

I've tried many variations of these types of commands with no result.

I've then set up a PXE boot server thinking that I might be able to pass
the options using pxelinux.cfg. Still no luck, it only sees two LUNS.

I've tried installing from network with a recompilled initrd.img from a
machine which was already installed and modprobe.conf modified to see
the LUNS. The donor server can see all of the volumes, the installing
version dies with a kernel problem since it cannot see the same already
installed volume.

What in the world can I do? Is there a guru here who can tell me how I
can do this?
//



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