Dell MD3220, MD3200 owner manual Create a New fdisk Partition on a Multipath Device Node, 171

DELL is the vendor of the device MD3200 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 you to create 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<x>, for example, use the following command, where mpath<x> is the multipathing device node on which you want to create the partition:

# fdisk /dev/mapper/mpath<x>

NOTE: The <x> value is an alphanumeric operating system dependent format. The corresponding value for mapped virtual disks can be seen using the previously run multipath command. Please refer to your operating system documentation for additional information on fdisk usage.

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<x> is the device node on which the partition was created.

# kpartx –a /dev/mapper/mpath<x>

If successful, the command does not show an output. To verify success and view exact partition naming, the user can use these commands to see the full partition names assigned.

#cd /dev/mapper

#ls

The following examples provide information about the general mapping formats:

On RHEL hosts, a partition node has the format /dev/mapper/mpath<x>p<y>, where <x> is the alphabetic number for the multipathing device, <y> is the partition number for this device.

Configuration: Device Mapper Multipath for Linux

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