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Configuration: Device Mapper Multipath for Linux 187
Using the MDSM software:
1
Map the host server to the MD3600i Series storage array.
2
Create the Virtual Disks.
3
Map newly created arrays to your host server.
NOTE: Any arrays configured with MDCU automatically get added to the list of
Devices in the PowerVault Modular Disk Storage Manager Enterprise Management
Window (EMW).
Device Mapper Configuration Steps
To complete the DM multipathing configuration and make storage available
to the Linux host server:
1
Scan for virtual disks. See "Scan for Newly Added Virtual Disks" on
page 188.
2
Display the multipath device topology. See "Display the Multipath Device
Topology Using the Multipath Command" on page 188.
3
Create a partition on a multipath device node. See "Create a New fdisk
Partition on a Multipath Device Node" on page 189.
4
Add a partition to DM. See "Add a New Partition to Device Mapper" on
page 190.
5
Create a file system on a DM partition. See "Create a File System on a
Device Mapper Partition" on page 191.
6
Mount a DM partition. See "Mount a Device Mapper Partition" on
page 191.
The following instructions show how to complete each of these steps.
In the following command descriptions <x> is used to indicate where a
substitution should be made. On Red Hat Enterprise Linux systems <x> is
the number assigned to the device. On SUSE Linux Enterprise Server
systems <x> is the letter(s) assigned to the device.
book.book Page 187 Thursday, December 9, 2010 3:20 PM