[CentOS] Antwort: Re: du vs df size difference
Frank.Brodbeck at klingel.de
Frank.Brodbeck at klingel.de
Thu Oct 1 17:42:30 UTC 2009
Robert Heller <heller at deepsoft.com> schrieb am 01.10.2009 19:35:20:
> At Thu, 01 Oct 2009 10:13:26 -0400 CentOS mailing list
> <centos at centos.org> wrote:
>
> >
> > Peter Kjellstrom wrote:
> > > One possibility is that the missing data is hiding under a
> mount-point in the
> > > normal case.
> > >
> > > /Peter
> >
> > So what you're saying is something is mounted on to a directory that
had
> > data in it before the mount. How do I see the data being hidden
without
> > unmounting the point?
>
> You can't. You must unmount. You should be able to do this from
> single user mode if the file system cannot be unmounted under multiuser
> mode (eg /usr, /var, etc.). Usually other mount points can be
> unmounted, but depends on what is running on the system at the time.
> Unmounting /home would require that you kick all users off for example,
> unmounting /var/www would require stopping apache, etc.
This is absolutely untested but it could work: mount / to /mnt and delete
the data from there. Dig into mount(8) and test this somewhere outside
the production area:
--bind Remount a subtree somewhere else (so that its contents are
available in both places). See above.
But again, this is untested and nothing more but a wild guess.
Frank.
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