Tar Compaction Using OAK

[amoghd64765494]

Hi All,

As AEM 6.0 consumes too much disk space because of Tar files getting created after every package install. I am using OAK offline tar compaction to reduce the disk space. And there are certain doubts and difficulties i am facing while doing this.

Doubts: How much free disk space is required to run Offline tar compaction if I am having 20GB of tar files in AEM ? Are there any free ram/disk space requirements to run this ?

Difficulties: After completion of compaction its showing like 6GB space got free but when i see the folder size it reduced only by 1-2 GB. ???

Need an urgent suggestions or guidelines on these.

Thanks,
Amogh 

[smacdonald2008]

There is a new community artilce on this: 

http://adobeaemclub.com/oak-tarmk-compaction/

See if this helps. 

[Lokesh_Shivalingaiah]

For your first question, you dont need any separate space other than the size of the tool. oak-run-1.2.11.jar has around 48MB and if you have so much to store that file would be sufficient.

For the second question, compaction runs on repository folder and the size difference would definitely reduce much more than 1-2 GB for 20GB tar files. Please make sure you are checking the size on a right folder! It may also depends on your data aswell.

[kautuk_sahni · Accepted solution]

Hi

As mentioned by Lokesh, this jar is of around 49MB and can be downloaded from :- http://mvnrepository.com/artifact/org.apache.jackrabbit/oak-run

Please follow this documentation for your help:-

Link:- https://docs.adobe.com/docs/en/aem/6-0/deploy/upgrade/microkernels-in-aem-6-0.html#Offline%20Compact...

Link:- http://adobeaemclub.com/oak-tarmk-compaction/

//

The procedure to run the tool is:

• Always make sure you have a recent backup of the AEM instance.

  Shut down AEM.

• Use the tool to find old checkpoints:

      

  java -jar oak-run.jar checkpoints install-folder/crx-quickstart/repository/segmentstore

  Code samples are intended for illustration purposes only.

• Then, delete the unreferenced checkpoints:

      

  java -jar oak-run.jar checkpoints install-folder/crx-quickstart/repository/segmentstore rm-unreferenced

  Code samples are intended for illustration purposes only.

• Finally, run the compaction and wait for it to complete:

      

  java -jar oak-run.jar compact install-folder/crx-quickstart/repository/segmentstore

  Code samples are intended for illustration purposes only.

I hope this will help you.

Thanks and Regards

Kautuk Sahni