topic Re: Gfs2 on lun , low deduplication in ONTAP Discussions https://community.netapp.com/t5/ONTAP-Discussions/Gfs2-on-lun-low-deduplication/m-p/3134#M582 <HTML><HEAD></HEAD><BODY><P>Thanx crocker, Ill post question directly to technical support engineer.</P></BODY></HTML> Tue, 13 Mar 2012 11:37:37 GMT marjansladek 2012-03-13T11:37:37Z Gfs2 on lun , low deduplication https://community.netapp.com/t5/ONTAP-Discussions/Gfs2-on-lun-low-deduplication/m-p/3121#M577 <HTML><HEAD></HEAD><BODY><P>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. </P><P></P><P>Thanks,</P><P>Bane</P></BODY></HTML> Thu, 05 Jun 2025 06:32:59 GMT https://community.netapp.com/t5/ONTAP-Discussions/Gfs2-on-lun-low-deduplication/m-p/3121#M577 marjansladek 2025-06-05T06:32:59Z Re: Gfs2 on lun , low deduplication https://community.netapp.com/t5/ONTAP-Discussions/Gfs2-on-lun-low-deduplication/m-p/3126#M580 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P>This sounds like a support related question.&nbsp; </P><P>We have external and internal subject matter experts in the NetApp Support Community answering questions about <A href="http://" target="_blank">Data ONTAP</A>.&nbsp;&nbsp; If you have a NOW login, this link enables your to engage them on this issue.</P><P>Mike</P></BODY></HTML> Mon, 12 Mar 2012 17:13:29 GMT https://community.netapp.com/t5/ONTAP-Discussions/Gfs2-on-lun-low-deduplication/m-p/3126#M580 crocker 2012-03-12T17:13:29Z Re: Gfs2 on lun , low deduplication https://community.netapp.com/t5/ONTAP-Discussions/Gfs2-on-lun-low-deduplication/m-p/3134#M582 <HTML><HEAD></HEAD><BODY><P>Thanx crocker, Ill post question directly to technical support engineer.</P></BODY></HTML> Tue, 13 Mar 2012 11:37:37 GMT https://community.netapp.com/t5/ONTAP-Discussions/Gfs2-on-lun-low-deduplication/m-p/3134#M582 marjansladek 2012-03-13T11:37:37Z