Next-gen filesystems: disk space usage log? [closed]

Solution 1:

I only have experience with ZFS in the list you mentioned. With ZFS you can make hierarchical volumes, so for example you could make;

• tank/category
• tank/category/product
• tank/category/product/a
• tank/category/product/b

etc

With the command "zfs list" you can then get the used, available and reference space for each volume within seconds. But this ofcourse only works when you are able to let your application split it up the right way.

Solution 2:

I still use ncdu with my ZFS filesystems. It's even more important now, as it is sparse-file aware and helps make sense of compressed ZFS filesystems.

See: How can I determine what is taking up so much space?