I have a thin provisioned volume of 5TB. There is only a CIFS share on this volume.
When I select all the files in my browser it says it has 2.5TB of files
But the system says it has 3.6TB in use
Filesystem total used avail capacity Mounted on
/vol/CIFS_BACKUP2/ 5120GB 3643GB 1476GB 71% /vol/CIFS_BACKUP2/
These are the options of the volume
vol options CIFS_BACKUP2
nosnap=on, nosnapdir=on, minra=off, no_atime_update=off, nvfail=off,
ignore_inconsistent=off, snapmirrored=off, create_ucode=on,
convert_ucode=on, maxdirsize=45875, schedsnapname=ordinal,
fs_size_fixed=off, guarantee=none, svo_enable=off, svo_checksum=off,
svo_allow_rman=off, svo_reject_errors=off, no_i2p=off,
fractional_reserve=0, extent=off, try_first=volume_grow,
read_realloc=off, snapshot_clone_dependency=off, dlog_hole_reserve=off,
There are no snapshots on the volume
snap list CIFS_BACKUP2
No snapshots exist.
I know that the Volume is thin provisioned, but how can you reclaim space from this?
Thank you in advance
Do you have large number of small files (less than 4K)?
there are 125 files and 5 folders.
It is a B2D folder where large images are saved such as acronis etc
I had a very similar problem. A few questions: What version of ONTAP are you running? And, is Storage Efficiency enabled on this volume?
I'm on 8.1, and was able to reclaim the missing space by running the following two commands:
sis start -s <volume_name>
When it completes (mine took over 12 hours):
sis off <volume_name>
The bug is outlined here: http://mysupport.netapp.com/NOW/cgi-bin/bol?Type=Detail&Display=657692