Cool Solutions

Snapshot Automation


October 28, 2008 8:00 am

Reads: 6705




by Vijayababu Dandi

Utility for creating pool snapshots on a particular Pool in regular intervals on OES2 Linux Server.


  1. Perl must be installed and running on the Linux server where this utility will be used.
  2. NSS must be installed to get the VFS support.

    (The SDK for this API set can be downloaded from

This tool is used to create snapshots on a particular pool in regular intervals. 15 snapshots on OES 2 Linux on any given stored-on partition. This utility will always maintains 15 snapshots on the server. To create a 16th snapshot it will delete the first created snapshot on the server. It always maintains the maximum of 15 snapshots.

It uses Virtual File Services (Originally called Virtual File Services for NetWare) to create the snapshots.

This utility generates the log file(/tmp/snap_logs). Where user can find the snapshot created time.

How to use the utility:

perl --help
Use of uninitialized value in concatenation (.) or string at line 24.
Usage:  -t <periodicity time> -s <memory size> -D <device> -P <pool name> -n <name of snapshots> -N <max no of snapshots>
-h | --help
-t | --time             Periodicity of snapshots( In seconds )
-s | --size             Size to allocate for  pool snapshot (in MB)
-D | --device           Device on which the partition need to be created (Eg : sda,sdb..)
-n | --name             Name of the pool snapshot ( Dont put any special characters )
-N | --noofsnapshots    Maximum number of snapshots ( 15 snapshots on OES 2 Linux on any given stored-on partition )
-P | --pool             Pool Name ( on which pool needs to take snapshot eg: POOL1, POOL2 ...)


Run “perl -t 12 -s 10 -D sdb -P POOL1 -n snap -N 15″ from the terminal.
If you run above command it takes snapshot on POOL1 with name snap<time in seconds> and uses sdb partition with size 10MB.
It maintains maximum 15 snapshots on the partition.

And creates a /tmp/snap_logs file. From where the user can find the snapshot created time.

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Disclaimer: This content is not supported by Novell. It was contributed by a community member and is published "as is." It seems to have worked for at least one person, and might work for you. But please be sure to test it thoroughly before using it in a production environment.