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Used vs Available Space

Grobiii

Newbie
Joined
Jul 28, 2021
Messages
1
Sorry, but im beginner with FreeNAS and i couldnt find a good explanation about used vs available space.

My problem is, im having Pool/Dataset with 62TB Used and 21TB Availabe space + with several zvols in it. The biggest one has 60TB Used and 50TB Available, all other are quite small and together they reaching the 62TB Used space but all having 21TB as Available.

So something is wrong with the numbers of the big zvol....or whats going on here? btw. its zvol size has been configured with 40TB (not forced).

Thanks!
 

sretalla

Wizened Sage
Joined
Jan 1, 2016
Messages
4,923
The biggest one has 60TB Used and 50TB Available
It's very hard to figure out what exactly you have from your statements, but it's absolutely possible for a zvol (and its snapshots) to occupy much more space than the allocated number.

If you share zpool list -v and zfs list together with zfs list -t snap with us, maybe we can help to better shine light on the problem.
 
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