Well, the title says it all.
unRAID (refreshed) page reports 60% use, 300 of 500GB for my cache.

In Krusader, checking the size of all folders (with "show hidden" enabled) shows 181GB in use.

Where are 119GB of storage???

 

Attach diagnostics to next post

Here you are.
I read two similar threads btw...
One "excused" this behavior that the FS supposedly uses more than reported by unRAID (and there is a command to find the actual FS overhead - which if you ask me, unRAID should include in the free space report).
The other was fixed (?) by rebooting in maintenance mode (not an easy task on a production server).
 

quasar-ultima-diagnostics-20210915-1007.zip

GUI is showing the correct used space, note that not all tools display correct usage for a btrfs filesystem, e.g. du, you can always confirm with:

 

btrfs fi usage -T /mnt/cache

 

Pool: cache
Overall:
    Device size:         465.76GiB
    Device allocated:         307.02GiB
    Device unallocated:         158.74GiB
    Device missing:             0.00B
    Used:             279.46GiB
    Free (estimated):         185.37GiB    (min: 185.37GiB)
    Free (statfs, df):         185.37GiB
    Data ratio:                  1.00
    Metadata ratio:              1.00
    Global reserve:         447.55MiB    (used: 0.00B)
    Multiple profiles:                no

             Data      Metadata System              
Id Path      single    single   single   Unallocated
-- --------- --------- -------- -------- -----------
 1 /dev/sdd1 305.01GiB  2.01GiB  4.00MiB   158.74GiB
-- --------- --------- -------- -------- -----------
   Total     305.01GiB  2.01GiB  4.00MiB   158.74GiB
   Used      278.38GiB  1.08GiB 64.00KiB 

 

Used:             279.46GiB = 300GB

 

    Device size:                 465.76GiB
    Device allocated:            307.02GiB
    Device unallocated:          158.74GiB
    Device missing:                  0.00B
    Used:                        279.46GiB
    Free (estimated):            185.37GiB      (min: 185.37GiB)
    Free (statfs, df):           185.37GiB
    Data ratio:                       1.00
    Metadata ratio:                   1.00
    Global reserve:              447.55MiB      (used: 0.00B)
    Multiple profiles:                  no

             Data      Metadata System              
Id Path      single    single   single   Unallocated
-- --------- --------- -------- -------- -----------
 1 /dev/sdd1 305.01GiB  2.01GiB  4.00MiB   158.74GiB
-- --------- --------- -------- -------- -----------
   Total     305.01GiB  2.01GiB  4.00MiB   158.74GiB
   Used      278.38GiB  1.08GiB 64.00KiB            

 

So, what is the 120GB diff that Krusader does not show me (even showing hidden files).
It is not a couple of GB.
I also did this:

du -h --max-depth 1 /mnt/cache
151G    /mnt/cache/system
3.9G    /mnt/cache/appdata
141G    /mnt/cache/domains
45M     /mnt/cache/generic_caching
188M    /mnt/cache/seafile
296G    /mnt/cache

 

Well the big difference is system.

Seems I have no access inside system/docker/docker (I use a folder not a file docker).

 

I am not sure the size is realistic for my dockers, but I also cannot verify it (seemingly) from Krusader as it doesn't have root access.

Any ideas how to?

 

EDIT: I tracked it down to /mnt/cache/system/docker/docker/btrfs/subvolumes
In there is a huge number of (virtual) volumes, not sure if they are cleaned up properly.

Some (plenty) of them seem to be same size, which doesn't look too random to me.
I wonder if some dockers could/should share subvolumes.

 

Edited September 15, 20214 yr by NLS

BTW... for some reason it got back to 180GB free after a few hours.

Something that had to do with sparse virtual volumes I believe?

 

(yes cache was empty already when I opened this thread - nothing for mover)