5.5. Disabling multipathing by device type

Procedure

1. Display device type:

   # multipathd show paths raw format "%d %s" | grep sdb
   sdb HP,HSV210

2. Disable devices in the /etc/multipath.conf configuration file by using the device section.

   The following example disables multipathing on all IBM DS4200 and HP devices:

   blacklist {
          device {
                  vendor  "IBM"
                  product "3S42"       #DS4200 Product 10
          }
          device {
                  vendor  "HP"
                  product ".*"
          }
   }

3. Validate the /etc/multipath.conf file after modifying the multipath configuration file by running one of the following commands:

   • To display any configuration errors, run:

     # multipath -t > /dev/null

   • To display the new configuration with the changes added, run:

     # multipath -t

4. Reload the /etc/multipath.conf file and reconfigure the multipathd daemon for changes to take effect:

   # service multipathd reload