You can set up a SAN boot LUN to work in a Red Hat Enterprise Linux environment that is using the FC protocol.
Before you begin
Verify that your system setup supports SAN boot LUNs. See the
- Create a LUN on the storage system and map it to the host. This LUN will be the SAN boot LUN.
You should ensure the following:
- The SAN boot LUN is mapped to the host.
- Multiple paths to the LUN are available.
- The LUN is visible to the host during the boot process.
- Enable the BIOS of the HBA port to which the SAN boot LUN is mapped.
For information about how to enable the HBA BIOS, see your HBA vendor-specific documentation.
- Configure the paths to the HBA boot BIOS as primary, secondary, tertiary, and so on, on the boot device.
For more information, see your vendor-specific documentation.
- Save and exit.
- Reboot the host.
- Install the operating system on the SAN boot LUN.
Note: For Red Hat Enterprise Linux 5 series, you must specify Boot Option as
linux mpath during the operating system installation. When you specify
linux mpath, you can see the multipath devices (/dev/mapper/mpathx) as installation devices.
- Install the Host Utilities.
- Configure DM-Multipath.