topic Re: How to shrink allocated size on a volume? in ONTAP Hardware

How to shrink allocated size on a volume?

RENAUD_TOUILLET — Thu, 05 Jun 2025 06:20:01 GMT

Hello,

I would like to shrink the allocated size that is show in "aggr show_space" for a volume.

For exemple this volume is using ~490 MB, but 78 GB are allocated!

Volume Allocated Used Guarantee

ds_bkpbkp_mirror_XX_ds_fc_rdm_XX_backup_si 78813640KB 490876KB none

The volume size is 3 GB for the moment

vol size ds_bkpbkp_mirror_XX_ds_fc_rdm_XX_backup_si

vol size: Flexible volume 'ds_bkpbkp_mirror_XX_ds_fc_rdm_XX_backup_si' has size 3g.

How can I shrink this space? I tried to change the volume size with "vol size ..." but allocated space never goes down...

For information this volume is a VSM destination, and the replication is broken-off for the moment.

Thanks

Renaud

Re: How to shrink allocated size on a volume?

aborzenkov — Fri, 31 Aug 2012 13:30:57 GMT

Did you try to turn off fs_size_fixed option?

Re: How to shrink allocated size on a volume?

RENAUD_TOUILLET — Fri, 31 Aug 2012 13:49:48 GMT

Hello,

Yes fs_size_fixed was off. But sorry for the missunderstanding: "vol size volname xxg" was working perfectly, but the value of the allocated entry in "aggr show_space" for this volume never changed. So my question is how to reduce the allocated value? Not the effective size of the volume.

Many thanks

Re: How to shrink allocated size on a volume?

saranraj456 — Fri, 31 Aug 2012 14:20:25 GMT

What is the allocated space value for volume in source?

Re: How to shrink allocated size on a volume?

RENAUD_TOUILLET — Fri, 31 Aug 2012 14:40:26 GMT

On the source allocated space is almost equal to used... on the destination allocated has 70 GB more than used (as explained above)