Red Hat DEVICE-MAPPER MULTIPATH 5.2 Manual de usuario descargar pdf (Pagina 8)

Chapter 2

For Red Hat Enterprise Linux 7, Red Hat Enter-

prise Linux 6, or Oracle Linux

This chapter describes how to set up a multipath environment, and the points to be checked after setup

when the server is running RHEL7, RHEL6, or Oracle Linux.

2.1 Setting Up the device-mapper multipath

Set up the multipath environment.

2.1.1 Preparation

device-mapper multipath uses Red Hat Package Manager (RPM) packages.

If the RPM versions are not listed in the Server Support Matrix, use the RPM supplied as standard in the OS.

Check that the "device-mapper-multipath" package is installed. If this package is not installed, install the

package before setting up a multipath configuration.

2.1.2 Editing "/etc/multipath.conf"

Edit the device-mapper multipath configuration file.

Create a configuration file as follows.

1 Execute the "mpathconf" command.

Executing this command registers multipath daemon in Services and creates the configuration file

(/etc/multipath.conf)

# mpathconf --enable

If the configuration file is not created when the command above is executed, copy the "/usr/share/doc/

device-mapper-multipath-X.X.X/multipath.conf" file in the "/etc" directory and then execute the

"mpathconf--enable"

command again.

2 If any internal disks or other devices are to be excluded from the multipath configuration, specify the

excluded devices in the "blacklist" section. If required, refer to the Red Hat web-site for details. Also

refer to the Red Hat web-site for reference purposes when Oracle Linux is used.

blacklist {

}

FUJITSU Storage ETERNUS DX Configuration Guide -Server Connection-

(Fibre Channel/FCoE/iSCSI/SAS) for Linux

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Red Hat DEVICE-MAPPER MULTIPATH 5.2 Manual de usuario Pagina 8