Re: [SLUG] Have free space, but 100% used?

[Peter Hardy <peterhardy@xxxxxxxxxxxxxx>]

...and then Rob B said:
> Can anyone explain to me why this is happening?
Yes.  Hopefully that'll be me. :-)

> 
> bunbun:/# df
> Filesystem           1k-blocks      Used Available Use% Mounted on
> /dev/sda1               186670     22858    154174   13%   /
> /dev/sda3               482249    469491         0     100%   /var
> /dev/sda4              3249508    229016   2855428   7%   /usr
> /dev/sdb1              8815404   2818376   5549220  34%  /export

Notice that, for all of your filesystems, the Used + Available < total free
space.  That's because mke2fs reserves a portion of the filesystem (default
is 5%) that can only be used by root.  The rationale is that, even when the
filesystem is full, root can get in and fix the problem.

Do a "dumpe2fs -h /dev/sda3", and look for the Reserved block count: field.
If you want to change the reserved block count, use the tune2fs utility.

HTH,
Peter
peterhardy@xxxxxxxxxxxxxx
-- 
The storm walked around the hills on legs of lightning,
shouting and grumbling.
                -- (Terry Pratchett, Equal Rites)