NetWorker Dedupe Stats, Redux

Where we’re at

A few weeks ago I posted a (lengthy) Perl script (and explanation) for running deduplication analysis against NetWorker savesets written to Data Domain devices.

Since then I’ve been tinkering with the script and I’ve made some modifications — and made it easier for you to use, even if you don’t have a Perl environment running on your machine.

My original script irked me because there was no mapping between volume ID and volume names, which I’ve addressed in this version. If you run it on the NetWorker server, it will automatically do the mapping for you. If you’re running it against gathered data, you can also grab output from “mminfo -mv -xc,” from the NetWorker server and point the utility at that. With this gathered, you’ll get volume names associated with all the statistics – such as:

Finally, as you may have spotted from the command line usage in the first graphic and intro — the utility is now compiled – and for Windows and Linux. So you can just download it and run against your environment. And remember — there’s no need to run it on the NetWorker server; you can run whatever mminfo query you want so long as you generate the output with the -S option, transfer it to another machine, and run it there.

If you don’t want to run it on the NetWorker server, here’s what you’d do:

1. On the NetWorker server, run:
   • An mminfo query generating -S output – e.g., “mminfo -avot -S” – writing that to a file/directory that’ll have plenty of free space.
   • An mminfo query generating the volume list on the server: “mminfo -mv -xc,“, writing that file
2. Transfer the two files across to your workstation.
3. Run the appropriate invocation of dedupe-analysis. For example:
   • Let’s say your mminfo -S output is saved as: mminfo_S.txt
   • You have mminfo -mv -xc, output saved as: mminfo_mv.txt
   • You want per-host details as well as the rollups.
   • You want the files/directories generated to be prefixed with MyNSRServer
   • You’d run: dedupe-analysis -f mminfo_S.txt -M mminfo_mv.txt -i -o MyNSRServer

Downloads

You can download an executable version of the deduplication analysis tool for your platform below. I’ve included MD5 checksums for both the zip files, and the included binaries.

• Linux:
  • Zip file MD5: 5ee89e693d5060b2bb4567dec1d05cd4
  • Binary file MD5: b7512b9032bcd073309c8682afc1f230
  • Zip Download
• Windows:
  • Zip file MD5: 00d0d20b9516f38541ebcda0455ae1ff
  • Binary file MD5: 9ea914d643806be9a3e7cf8c49df2c34
  • Zip Download

Happy deduping!