du: strange behaviour

[Adam Vande More]

On Mon, Sep 1, 2014 at 12:08 PM, Erich Dollansky <
erichsfreebsdlist at alogt.com> wrote:

> Hi,
>
> On Mon, 1 Sep 2014 11:25:15 -0500
> Adam Vande More <amvandemore at gmail.com> wrote:
>
> > On Mon, Sep 1, 2014 at 10:57 AM, Erich Dollansky <
> > erichsfreebsdlist at alogt.com> wrote:
> >
> > > Hi,
> > >
> > > I just try to get a Raspberry Pi up and running. I use a FreeBSD
> > > installation to do this:
> > >
> > > FreeBSD X220.alogt.com 10.1-PRERELEASE FreeBSD 10.1-PRERELEASE #44
> > > r270870: Mon Sep  1 08:46:27 WITA 2014
> > > erich at X220.alogt.com:/usr/obj/usr/src/sys/X220  amd64
> > >
> > > For some reason I did
> > >
> > > [X220]/rescue (root) > du *
> > > 6.6M    [
> > >  12K    dhclient-script
> > > 4.0K    nextboot
> > > 6.6M    total
> > > [X220]/rescue (root) >
> > >
> > > A plain du gives this:
> > >
> > > [X220]/rescue (root) > du
> > > 6.6M    .
> > > 6.6M    total
> > > [X220]/rescue (root) >
> > >
> > > If I do the same inside the directory containing /rescue for the
> > > Raspberry, I get a list ending with these lines:
> > >
> > > 5.7M    unxz
> > > 5.7M    vi
> > > 5.7M    whoami
> > > 5.7M    xz
> > > 5.7M    xzcat
> > > 5.7M    zcat
> > > 5.7M    zfs
> > > 5.7M    zpool
> > > 768M    total
> > >
> > > This is what I also would have expected for the amd64 directory.
> > >
> > > Why does du stop after [ but includes the two scripts?
> > >
> > > Of course, all the other files are also in this directory as shown
> > > by ll:
> > >
> > > total 931792
> > > -r-xr-xr-x  138 root  wheel   6.5M Sep  1 09:16 [
> > > -r-xr-xr-x  138 root  wheel   6.5M Sep  1 09:16 atmconfig
> > > -r-xr-xr-x  138 root  wheel   6.5M Sep  1 09:16 badsect
> > > -r-xr-xr-x  138 root  wheel   6.5M Sep  1 09:16 bsdlabel
> > > -r-xr-xr-x  138 root  wheel   6.5M Sep  1 09:16 bunzip2
> > > -r-xr-xr-x  138 root  wheel   6.5M Sep  1 09:16 bzcat
> > > -r-xr-xr-x  138 root  wheel   6.5M Sep  1 09:16 bzip2
> > > -r-xr-xr-x  138 root  wheel   6.5M Sep  1 09:16 camcontrol
> > > -r-xr-xr-x  138 root  wheel   6.5M Sep  1 09:16 cat
> > > -r-xr-xr-x  138 root  wheel   6.5M Sep  1 09:16 ccdconfig
> > > -r-xr-xr-x  138 root  wheel   6.5M Sep  1 09:16 chflags
> > >
> > > ...
> > >
> > > Does somebody have any ideas?
> > >
> >
> > man du | grep '\-l'
> > du -l *
> >
> I do not really get this. The other files are there but not seen
> because of hard links in /rescue?
>

That's what the du man page says.


> Why is this then different on /rescue for ARM?
>

It isn't.

I speculate that whatever mechanism you used to populate your root
> filesystem on the arm broke the hardlinks and created many identical
> files with different names in that directory.


Um, that's the way it's supposed to be e.g. crunchgen(1).

-- 
Adam