Unsolved
This post is more than 5 years old
1 Rookie
•
20.4K Posts
0
682
Directory space utilization on deduped file system
We have quota enabled directories that are charged back to their customers based on space consumption. File systems that these reside on have dedupe enabled, quota policy is set to filesize. Reading document "Using Celerra Data Deduplication 5.6.48" states that when using quota policy filesize, reported space is counted based on logical size of the file, meaning dedupe/compression is not taken into account ? So i have this folder and trying to figure out what the actual disk consumption is:
nas_quotas reports utilization as 844488276 (805GB).
1) Can you explain the discrepancies ? I would think that if quota policy is set to filesize, the numbers that i see on the image and reported by nas_quotas would be very close ?
2) what is the difference between Size and Size on disk
3) when it says "logical file size is taken into account", where is it reflected ..in windows explorer or output of nas_quotas command ?
It's possible that tree quota needs to be "re-calced" so 805GB could be a bogus number.
Thank you
dynamox
1 Rookie
1 Rookie
•
20.4K Posts
0
September 20th, 2010 07:00
So how is tree quota enforced then ? If i set tree quota policy to filesize and not blocksize i expect it to match utilization that i see in Windows explorer. We are talking about a ~60G discrepancy here.
dynamox
1 Rookie
1 Rookie
•
20.4K Posts
0
September 20th, 2010 07:00
tree
Rainer_EMC
8.6K Posts
0
September 20th, 2010 07:00
I guess that nas_quotas probably reports in multiple of 8kB Blocks since that is the smallest allocation unit
The Windows side properly just adds up the file sizes not taking into account that potentially up to 8k-1 empty space in the last block of a file
On the Windows side size on disk means the compressed size
Rainer
Peter_EMC
674 Posts
0
September 20th, 2010 07:00
Which quota type (user,group or tree) is this "nas_quotas reports utilization as 844488276 (805GB)." coming from?
Peter_EMC
674 Posts
0
September 20th, 2010 22:00
open a SR an let the tree quota been recalculated, quote emc120377. There is the procedure how this is done.
dynamox
1 Rookie
1 Rookie
•
20.4K Posts
0
September 21st, 2010 05:00
already did, tree quota recalc completely locked up my file system to the point datamover had to be rebooted. If you are interested SR 36551080 . Needless to say i am not running any recalc until that issue is resolved.