| General Operating Guidelines and Limitations  | 
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Operating System / | 
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Affected Component  | Description  | 
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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.”  | 
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  | Linux Distributed Gateway (Proxy Server) Restrictions:  | 
  | The dpserver file, used to configure network interfaces and addresses for  | 
  | Distributed Gateways, has a   | 
  | 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.  | 
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  | 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   | 
  | 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”  | 
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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.  | 
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StorNext User’s Guide  | 340  |