https://community.netapp.com/t5/General-Discussion/how-to-use-force-flag-in-restApi-to-reduce-lun-size/m-p/142007#M107 <P>i want to reduce a size of lun which is attached to host by restApi</P> <P>i am getting this error</P> <P>&nbsp;</P> <P>Reducing LUN size without coordination with the host system may cause permanent data loss or corruption.. Use the force flag to allow LUN size reduction.</P> <P>&nbsp;</P> <P>how can i use force flag</P> <P>&nbsp;</P> <P>url: https://&lt;ip of apiserver&gt;:8443/api/1.0/ontap/luns/&lt;lun_key&gt;</P> Wed, 04 Jun 2025 13:26:11 GMT neha_T 2025-06-04T13:26:11Z https://community.netapp.com/t5/General-Discussion/how-to-use-force-flag-in-restApi-to-reduce-lun-size/m-p/142007#M107 <P>i want to reduce a size of lun which is attached to host by restApi</P> <P>i am getting this error</P> <P>&nbsp;</P> <P>Reducing LUN size without coordination with the host system may cause permanent data loss or corruption.. Use the force flag to allow LUN size reduction.</P> <P>&nbsp;</P> <P>how can i use force flag</P> <P>&nbsp;</P> <P>url: https://&lt;ip of apiserver&gt;:8443/api/1.0/ontap/luns/&lt;lun_key&gt;</P> Wed, 04 Jun 2025 13:26:11 GMT https://community.netapp.com/t5/General-Discussion/how-to-use-force-flag-in-restApi-to-reduce-lun-size/m-p/142007#M107 neha_T 2025-06-04T13:26:11Z https://community.netapp.com/t5/General-Discussion/how-to-use-force-flag-in-restApi-to-reduce-lun-size/m-p/142009#M108 <P>You do realize all the sequences you'll get after downsizing a LUN, aren't you?</P> <P>Most applications will not survive such a reduction.</P> <P>&nbsp;</P> <P>A better option is to make LUN thinly provisioned instead.</P> Thu, 09 Aug 2018 17:05:48 GMT https://community.netapp.com/t5/General-Discussion/how-to-use-force-flag-in-restApi-to-reduce-lun-size/m-p/142009#M108 D_BEREZENKO 2018-08-09T17:05:48Z