[Users] Reclaim deleted blocks from thin provisioned vdisk

[Aslam, Usman]

Hi fellow Ovirt users,

I have a situation where I need to clone a database VM several times. I have a 200GB thin allocated vdisk associated with it which had a large database on it.
I have since truncated several tables, removed bin logs etc. and reduced the disk usage to about 26GB. But the Ovirt UI still shows actual size at 185GB.

Screen Shots

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How would I go about reclaiming deleted blocks?

This would speed up the cloning process and obviously use a lot less space.

I goggled but did not find much on the topic except for a similar article for VMware http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2014849

Thank you for your time!

Usman
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