Disk space allocation

[Alex Merritt]

On Fri, Apr 17, 2015 at 10:07 AM, lokadamus at gmx.de <lokadamus at gmx.de> wrote:

> On 04/15/15 20:45, Alex Merritt wrote:
> > Hello,
> >
> > File systems such as ext3/4 reserve some amount of space for allocation
> > only by privileged users, which can be adjusted, e.g.
> >
> > tune2fs -m reserved-blocks-percentage /dev/sdaN
> >
> > I installed a BSD system using Virtualbox, giving it an 8GB disk, but
> 'df'
> > shows an aggregate size among all mount points to be less than the
> > capacity. The minfree parameter to tunefs defaults to 8% (see below) but
> 8%
> > does not account for the difference in 8189MB capacity vs sum of ca. 6G
> > among all file systems (shown by df). There's ca. 27% of capacity
> > unavailable.
> >
> > What could I be missing here?
> >
> > # fdisk
> > [...]
> > The data for partition 1 is:
> > sysid 165,(DragonFly/FreeBSD/NetBSD/386BSD)
> >     start 63, size 16773057 (8189 Meg), flag 80 (active)
> > beg: cyl 0/ head 1/ sector 1;
> > end: cyl 1023/ head 255/ sector 63
> >
> > # dumpfs /dev/ad0s1a | grep minfree
> > minfree 8% optim time maxcontig 15 maxbpg 2048
> >
> > # df -hT
> > Filesystem        Type     Size   Used  Avail Capacity  Mounted on
> > /dev/serno/--.s1a  ufs      620M   140M   431M    24%    /
> > devfs                   devfs    1.0K   1.0K     0B   100%    /dev
> > /dev/serno/--.s1d  ufs      2.2G   396K   2.0G     0%    /home
> > /dev/serno/--.s1e  ufs      248M    10K   228M     0%    /tmp
> > /dev/serno/--.s1f  ufs      2.6G   1.5G   882M    64%    /usr
> > /dev/serno/--.s1g  ufs      248M   213M    15M    93%    /var
> > procfs                  procfs   4.0K   4.0K     0B   100%    /proc
> >
> > Thanks!
> > Alex
> > _______________________________________________
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> >
> Which filesystem and FreeBSD Version you are using?
> UFS/ UFS2 have an option, that in default setting 10% are reserved.
> So you can use your partition with 110%.
>
> Greetings
>

I am using DragonFly BSD, and "geom" does not seem to be in the package
repository. I mailed here assuming it is not a distro-specific
characteristic.

The file system is UFS. What do you mean use it with 110%?