Dell PowerVault MD3220i El manual del propietario descargar pdf (Pagina 193)

Configuration: Device Mapper Multipath for Linux 193

\_ 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 of a partition space for a file system on

the newly scanned and mapped virtual disks that are 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. 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<x> is the

device node on which the partition was created.

# kpartx –a /dev/mapper/mpath<x>

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

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Dell PowerVault MD3220i El manual del propietario Pagina 193