Dell PowerVault MD3220i Owner's Manual - Page 181

\_ round-robin 0 [prio=1][enabled] \_ 6:0:0:22 sdcl 69:144 [active][ghost] where: mpathb is the name of the virtual device created by device mapper. It is located in the /dev/mapper directory. DELL is the vendor of the device MD3200i is the model of the device Sdx is the physical path to the owning controller for the device Sdcl is the physical path to the non-owning controller for the device Create a New fdisk Partition on a Multipath Device Node The fdisk command allows creation partition space for a file system on the newly scanned and mapped virtual disks that have been presented to Device Mapper. To create a partition with the multipathing device nodes /dev/mapper/mpath, for example, use the following command, where mpath is the multipathing device node on which you want to create the partition: # fdisk /dev/mapper/mpath NOTE: The value is an alphanumeric operating system dependent format. The corresponding value for mapped virtual disks can be seen using the previously run multipath command. See your operating system documentation for additional information on fdisk. Add a new Partition to Device Mapper The kpartx command adds the newly fdisk created partition to the Device Mapper list of usable partitions. See examples below, where mpath is the device node on which the partition was created. # kpartx -a /dev/mapper/mpath If successful the command does not display an output. To verify success and view exact partition naming, you can use these commands to see the full partition names assigned. # cd /dev/mapper Configuration: Device Mapper Multipath for Linux 181