disabling a driver during kickstart

[Kyle Powell]

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Jonathan Horne wrote:
> Greetings,
> 
> Can someone tell me how to get kickstart for RHEL5x/CentOS5x to ignore multipath/SAN during system install?  the other day multipath kicked in automatically during an install and i overwrote data on a LUN and the next thing i know all my LVMs now live out on the SAN.  The only way i know of to get around this is to either pull the fiber before the install or get in the switch fabric and de-zone the port.
> 
> it just seems logical that there would be a way to not destroy your LUNs during a scripted kickstart install.  Can anyone shed light on this for me, or point me in the right direction?
> 
> thanks,
> Jonathan Horne

Hi Jonathan,

The "latefcload" boot option has been around since RHEL 3 U6.
http://www.redhat.com/docs/manuals/enterprise/RHEL-3-Manual/release-notes/as-x86/RELEASE-NOTES-U6-x86-en.html
"Systems using storage attached to Fibre Channel host bus adapters (FC HBAs) may
encounter issues during installation due to PCI device load ordering. To address
this issue, a new boot option called latefcload was developed to delay the
loading of FC HBAs until other storage devices have been loaded."

The other, older solution I've seen used is specifying the "nostorage" boot
option and then adding a "device scsi <local_scsi_storage_module>" to the
kickstart file. If it works for you, I'd recommend the first option. Far more
portable.
- --
Kyle Powell | Red Hat | Senior Consultant, RHCE
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