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Does FileStore support thin provisioning?

Updated: 22 Nov 2011 | 2 comments
brad hargett's picture
brad hargett
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This issue has been solved. See solution.

Does anyone know if FileStore supports thin provisioning today?  If not, any idea as to when it will?  Thansk, Brad

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Sean Craig's picture
28
Sep
2011
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Sean Craig
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Hi Brad,Under the covers,

Hi Brad,

Under the covers, Filestore uses the full Storage Foundation stack that does support Thin Provisioning.  That said, Filestore doesn't expose this functionality today.

regards

Sean

Loic Bouquet's picture
30
Sep
2011
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Loic Bouquet

What do you want to thin ?

 

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. 
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