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Forum Discussion
littomalt
Jan 09, 2021Aspirant
Space warning, less than 20%. But more than 50% is inaccessible...
Hi
I get warning that space is less than 20%.
When i take a look into total NAS i see Unaccessible space more than 50%.
Total Capasity is 10,8 Tbyte
Total visible "used" is 4,5 Tbyte
Unaccessible 6,1 Tbyte
Snapshot is 1,4 Tbyte
Can sombody explain what is happening?
Can I release some of this?
19 Replies
As to the space warning, 2.2/10.8 is about 20%.
What tool is giving you the second screenshot? Generally you can't rely on analysis of a mounted network share - particularly with btrfs, where the on-disk structures simply aren't exposed with SMB or NFS.
- rn_enthusiastVirtuoso
From Googling around it looks like the application is called SpaceSniffer. The "Unaccesible" space might be due to permissions issues or the application simply not being able to properly determine the space usage.
The NAS gets the information directly from the filesystem. This will always be more accurate than any 3rd party app. Trust the NAS here. StephenB is absolutely correct here that a tool trying estimate space usage over SMB where it will not have knowledge of the underlying NAS filesystem - that is never going to work properly :)
- rn_enthusiastVirtuoso
I will add that the BTRFS quotas module can in rare circumstances cause issues for space estimation on the NAS and you have quotas enabled. But other than that, the NAS is always the more accurate.
Is there any reason you might think the NAS space estimation is too high?
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