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Gfs2 on lun , low deduplication

Hi, I have lab environment with KVM cluster with FC access to filer. I tried with gfs2 directly on lun (w/o lvm cluster intallation) and properly aligned qcow2 images on it. Lun protocol type is linux and Gfs2 is with default block size (4096 bytes).Space utilization is 830GB on that vol (only one lun). But, deduplication on that vol wont go beyond 1%. Do you have any ideas why dedup is so low.

Thanks,

Bane

Re: Gfs2 on lun , low deduplication

Hi,

This sounds like a support related question. 

We have external and internal subject matter experts in the NetApp Support Community answering questions about Data ONTAP.   If you have a NOW login, this link enables your to engage them on this issue.

Mike

Re: Gfs2 on lun , low deduplication

Thanx crocker, Ill post question directly to technical support engineer.