Seagate ST336704FC Einstellungsanleitung PDF herunterladen (Seite 23)

Chapter 1: HP Clustered File System Commands 17

Clear the Host Registry

This option removes all entries from the server registry.

CAUTION: Before clearing the server registry, be sure to reboot or

power off any servers that were previously removed from the

cluster and no longer had access to the SAN. After the servers

have been rebooted, they can safely access the SAN. (If the

servers are not rebooted, it is possible for them to corrupt

filesystems.)

mxmpio – monitor or manage MPIO devices

Synopsis

/opt/hpcfs/bin/mxmpio command [options...] [parameters ...]

[PSD-devices ...]

Description

HP Clustered File System uses multipath I/O (MPIO) to eliminate single

points of failure. A cluster can include multiple FibreChannel switches,

multiple FC ports per server, and multiported SAN disks. This

configuration provides multiple paths for I/O between cluster servers and

SAN disks.

When you start HP Clustered File System, it automatically configures all

paths from each cluster server to the storage devices. On each server, it

then uses the first path it discovered for I/O with the SAN devices. If that

path fails, HP Clustered File System automatically fails over the I/O to

another path.

The mxmpio command can be used to display status information about

MPIO devices or to control the path used for I/O. With the exception of

enableall and disableall, all commands take PSD device names to

operate on specific devices. If you do not specify a PSD device, the

command operates on all devices.

The options are:

-l

Long option. Provides more detail about targets. This option does not

apply to enableall or disableall.

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Seagate ST336704FC Einstellungsanleitung Seite 23