General Operating Guidelines and Limitations

 

 

Operating System /

 

Affected Component

Description

 

 

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.

 

 

 

In a file system configuration file, if the Metadata parameter for a stripe group

 

was set to Yes when the file system was created, do not later change the

 

parameter to No. Doing so will cause the metadata to become inaccessible and

 

result in errors. Also, if the parameter is changed to No, the cvupdatefs

 

command might allow bandwidth expansion of the stripe group, resulting in

 

metadata corruption.

 

 

Solaris

On Solaris, by default, the /usr/lib/fs/nfs/nfsfind script is run nightly by the

 

cron daemon. This script contains a find command that traverses any local file

 

system that is exported (shared) via NFS. If the running of this script is

 

interfering with the performance of processes accessing StorNext file

 

systems, it can be modified to skip them. To do so, add the following line to

 

the find command in the script:

 

'(' -type d -fstype cvfs -prune ')' -o

 

The final find command should look like this:

 

find $dir '(' -type d -fstype cvfs -prune ')' -o -type f -name .nfs\* -mtime +7 -mount -exec

 

rm -f {} \;

 

 

 

The Solaris Security Toolkit, formally known as JASS, causes the following

 

two issues:

 

• It disables RPC by renaming the RPC startup script, disrupting the

 

StorNext interprocess communication. To fix the communication problem,

 

rename the RPC startup script in /etc/init.d from rpc.<illegal extension> to rpc.

 

• It turns on IPSec, causing numerous warning messages in the system log

 

file. Either disable IPSec by removing the IPSec startup file in /etc/init.d or

 

contact Sun Technical Support to find out how to reconfigure IPSec to

 

ignore local loopback connections.

 

 

Windows

Windows Services for UNIX (SFU) supports only NTFS for NFS exports.

 

Because of this limitation, a Windows system cannot act as an NFS server for

 

StorNext File System.

 

 

StorNext User’s Guide

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Quantum 6-01658-05 manual Two issues

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