Red Hat Knowledgebase

Referring to the multipath article "How do I setup device-mapper multipathing in Red Hat Enterprise Linux 4?", this step should be added before doing the multipath scan on the systems if you have a product not mentioned in the multipath database. Please see recommended FAQ.

To add additional products to the database of known multipathing devices, edit the /etc/multipath.conf file and insert the appropriate device information.

For example, to add information about the HP Open-V series the entry looks like this:

devices {
device {
vendor "HP"
product "OPEN-V."
getuid_callout "/sbin/scsi_id -g -u -p0x80 -s /block/%n"
}
}