General Operating Guidelines and Limitations

 

 

Operating System /

 

Affected Component

Description

 

 

Linux

StorNext does not support the use of loopback IP addresses other than

 

127.0.0.1. SUSE Enterprise Linux 10 systems sometimes have an entry for

 

127.0.0.2 in the /etc/hosts file. This causes various FSM operations to fail with

 

the error “Not Local.”

 

 

 

Linux Distributed Gateway (Proxy Server) Restrictions:

 

The dpserver file, used to configure network interfaces and addresses for

 

Distributed Gateways, has a counter-intuitive restriction. If an interface has

 

more than one address, an address must be specified in the dpserver file.

 

However, if the interface has only one address, an address cannot be specified

 

or the mount command will fail.

 

 

 

Many versions of Linux run a cron script nightly to build a database used by

 

the slocate command. If StorNext file systems are mounted, they are traversed

 

by this cron job which can have a dramatic impact on the performance of

 

other applications currently using these file systems. Perform the following

 

steps (based on Linux version) to prevent the cron script from traversing

 

StorNext file systems.

 

RedHat Enterprise Linux 4 and 5

 

Add “cvfs” to the list of file system types to be skipped. This is usually done

 

by modifying the “PRUNEFS” line in the /etc/updatedb.conf file to read:

 

PRUNEFS=”cvfs sysfs selinuxfs usbdevfs devpts NFS nfs nfs4 afs sfs proc smbfs cifs

 

autofs auto iso9660 udf”

 

SUSE Linux Enterprise Server 10

 

The optional “findutils-locate” package is used to build the slocate database.

 

The default behavior is to disable building the database. If enabled, to

 

prevent cvfs file systems from being scanned, add “cvfs” to the list of file

 

system types to be skipped. This is usually done by modifying the

 

“UPDATEDB_PRUNEFS” line in the /etc/sysconfig/locate file to read:

 

UPDATEDB_PRUNEFS=”cvfs”

 

 

All UNIX and Linux

The swapon command does not work on StorNext file systems. The Linux/

 

Unix swapon command is used to specify devices on which paging and

 

swapping take place. If swapon is run on a StorNext file system, the command

 

fails with an invalid argument error.

 

 

StorNext User’s Guide

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Quantum 3.5.2 manual RedHat Enterprise Linux 4