[Discuss] du question

[jdm at moylan.us (dan moylan)]

dan ritter writes:
> On Thu, Jun 08, 2017 at 11:48:52AM -0400, dan moylan wrote:

> > looking at the sizes of the directories created by
> > backintime i am puzzled by a directory which shows up as
> > 86M in one instance and 35G in another.  can someone
> > please explain what's going on.

> > moylan 1[1630] ls
> > 20170607-120002-419/  20170607-230005-357/  b1*  last_snapshot@
> > moylan 1[1631] du -s *
> > 35G	20170607-120002-419
> > 86M	20170607-230005-357
> > 4.0K	b1
> > 0	last_snapshot
> > moylan 1[1632] du -s 20170607-230005-357/
> > 35G	20170607-230005-357/
> > moylan 1[1633] du -s ../
> > 35G	../

> I don't know backintime, but I'm guessing it uses links to
> do file-level snapshots. Bet there's a FAQ.

yes, true enough, and i understand that.  it's the performance
of du that i don't understand -- look at the two cases:

this shows the actual storage, 86M assigned to
20170607-230005-357.

> moylan 1[1631] du -s *
> 35G	20170607-120002-419
> 86M	20170607-230005-357
> 4.0K	b1
> 0	last_snapshot

this shows the primary backup storage also assigned to
20170607-230005-357.

> moylan 1[1632] du -s 20170607-230005-357/
> 35G	20170607-230005-357/

now why is that?

ole dan

j. daniel moylan
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