If you want to thin provisionning the FileSystem, it's not possible in SFS, because SFS use Storage Foundation (like Sean said).

But, if you are using a thin provisionning array, and you have a thin provisionning VirtualDisk exported to SFS, of course you volume is thin.

 

Thin is good, but stay thin is better !

For that, Storage Foundation can tag the volume compatible with thin reclaim technology. If you want use this feature, you must enable the thin reclain (zero detect for 3PAR for exemple).

 

 

For exemple, a FileStore on 3PAR, you can see the value thinrclm :

 

SFS01_01:~ # vxdisk list

DEVICE       TYPE            DISK         GROUP        STATUS

cciss/c0d0   auto:none       -            -            online invalid

3pardata0_5001 auto:simple     3pardata0_5001  sfsdg        online clone_disk thinrclm shared

3pardata0_5195 auto:simple     3pardata0_5195  sfsdg        online clone_disk thinrclm shared

3pardata0_5201 auto:simple     3pardata0_5201  sfsdg        online clone_disk thinrclm shared

SFS01_01:~ #

 

thinrclm is the mark for the Thin Reclaim compatibility. 

 

In conclusion, FileStore file systems is not thin provisionned, but the array can be thin provitionned, and the Thin Reclaim is used  to free unused space.