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[Linux-cluster] RHEL Problem: Can't access LUNS



Is there anyone on this list who can make a suggestion to RH??? I've been 
asking about this for some time now and have no idea where to turn. 

I've been working with Qlogic on my LUN problem for a couple of weeks or so. I 
posted asking about this here but it seems that there aren't any answers here 
either.

The problem is that I need to install RHEL on fibre channel storage volumes. I 
cannot find a way of doing this from the installer. Once the OS is installed I 
can see them but that's of little use. 

In order to see the volumes which I need to gain access to, I need to install 
RHEL and then do the following;

Edit /etc/modprobe.conf
options scsi_mod max_luns=256 dev_flags=INLINE:TF200:0x242
mkinitrd -f /boot/initrd-`uname -r`.img `uname -r`
Reboot;

Then all volumes on the storage device (32 of them) can be seen by the server. 

The problem is with the Red Hat scsi layer, not with the Qlogic driver. That 
is apparent by the fact that the devices can be seen by the HBA BIOS. 
Ultimately this needs to be answered by Red Hat - how to pass "max_luns=xxx" 
to the scsi layer during the OS installation.

Or, if someone could explain how I might be able to build a custom install 
disk, that might work also. Perhaps I can pre-install the code needed so that 
anaconda can see all of the volumes?

Mike




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