df on filer shows larger amount of used space for volume than Windows host

paul_w_jackson — Thu, 05 Jun 2025 06:58:38 GMT

I have a flex volume with the following options:

Volume State           Status            Options
BOSEQUCO01_Vol_2 online          raid_dp, flex     create_ucode=on,
                                redirect          convert_ucode=on,
                                active_redirect   fractional_reserve=0,
                                                  snapshot_clone_dependency=on

It has 1200GB total, 453GB used according to a "df -g" run on the filer. This volume is exported as a LUN to a standalone Windows 2008 server and when I get properties on the drive, I see that it's only using 381GB. What's going on with the 72GB that the server doesn't see? Is this common behavior for LUNs? I had this same behavior the other day and ran a SnapDrive Space Reclaimer job and it was able to eliminate the "ghost" space. However, now when I run the reclaimer it says that there is no space to reclaim.

Thanks,

Paul

Re: df on filer shows larger amount of used space for volume than Windows host

columbus_admin — Thu, 07 Jul 2011 17:22:14 GMT

Most likely if this isn't a whitespace issue...it is a snapshot issue. What does a df -g show is the reserve over, and what are your LUN settings? Is the LUN guaranteed, thin provisioned? lun show -v should help get most of that.

- Scott

topic df on filer shows larger amount of used space for volume than Windows host in Data Protection

df on filer shows larger amount of used space for volume than Windows host

Re: df on filer shows larger amount of used space for volume than Windows host