The system must be manually configured to automatically load the device
drivers for the controllers to which the multipath IO devices are connected
within the INITRD
. Therefore add the needed driver module
to the variable INITRD_MODULES in the file
/etc/sysconfig/kernel
.
If your system, for example, contains a RAID controller accessed by the cciss driver and multipath IO devices connected to a Qlogic controller accessed by the driver qla2xxx, this entry would look like:
INITRD_MODULES="cciss"
Because the Qlogic driver is not automatically loaded on start-up, add it here:
INITRD_MODULES="cciss qla2xxx"
After having changed /etc/sysconfig/kernel
,
recreate the INITRD
on your system with the
command mkinitrd.
When you are using LILO as a boot manager, reinstall it with the command /sbin/lilo. No further action is required if you are using GRUB.