[nflug] uhoh

Robert Meyer meyer_rm at yahoo.com
Wed Aug 9 15:15:26 EDT 2006 

OK, before this gets out of hand...

Very little in /proc actually uses real disk space.  The system creates files
that map to memory images.  That is to say that if you have 2 gigs of virtual
memory that *is being used*, then /proc will look like it is using more than 2
gigs of disk space.  This is phantom space.  It's really your virtual memory
mapped to look like files.  It's not *actually* using disk space.  When
checking the disk usage on a system, it's a good idea to exclude /proc from the
list of directories to check.

Does this clear anything up?

Cheers!
Bob

--- eric <eric at bootz.us> wrote:

> /proc/kcore is at 805M
> 
> joshj at linuxmail.org wrote:
> 
> > When we last left our adventurers...
> >
> >> well I thought I only had 500M but I guess that can't be right unless
> >> swap took over??
> >
> >
> > I'm not 100% sure on this, but my understanding is that it is the size
> > of all used memory. swap and otherwise. So it should equal
> > the totals you get if you add up your used memory from the "free"
> > command.
> > Either way, it doesn't take up disk space. Nothing in /proc does.
> >
> >>
> >>
> >> joshj at linuxmail.org wrote:
> >>
> >>> When we last left our adventurers...
> >>>
> >>>> ok this seems strange "/proc" is 775M
> >>>>
> >>>> any clues?
> >>>
> >>>
> >>>
> >>> How much RAM do you have? Its probably mostly kcore.
> >>>
> >>> http://www.unixguide.net/linux/faq/04.16.shtml
> >>>
> >>>>
> >>>> Mark Musone wrote:
> >>>>
> >>>>> It is taking so long because "*" in / will also match and count the
> >>>>> files in
> >>>>> /home,/tmp,/usr, and /var.
> >>>>>
> >>>>> Manually put in the directory names, omitting those directories that
> >>>>> are on
> >>>>> other disks:
> >>>>>
> >>>>> In the following case of my / directory:
> >>>>> -bash-2.05b# ls
> >>>>> bin  boot  dev  etc  home  initrd  lib  local  lost+found  mnt
> >>>>> mnt2  proc
> >>>>> root  sbin  tftpboot  tmp  usr  var
> >>>>>
> >>>>>
> >>>>> "du -sk bin boot etc initrd lib local mnt mnt2 root sbin"
> >>>>>
> >>>>> It'd be a lot faster.
> >>>>>
> >>>>> Same thing with "find", issue the -xdev option to stay in just the /
> >>>>> filesystem
> >>>>>
> >>>>> "find / -xdev -size +100K"   ...etc..
> >>>>>
> >>>>>
> >>>>> -Mark
> >>>>>
> >>>>> -----Original Message-----
> >>>>> From: nflug-bounces at nflug.org [mailto:nflug-bounces at nflug.org] On
> >>>>> Behalf Of
> >>>>> eric
> >>>>> Sent: Wednesday, August 09, 2006 1:21 PM
> >>>>> To: nflug at nflug.org
> >>>>> Subject: Re: [nflug] uhoh
> >>>>>
> >>>>> the commands are working so incredibly slow I decieded to delete some
> >>>>> "safe stuff" I have a webmin directory in /root that has been
> >>>>> their all
> >>>>> along so I started to get rid of some files and the commands "find"
> >>>>> "du"
> >>>>> are still moving like snails, I tried du -s * from the / dir ...it
> >>>>> had
> >>>>> been running for a half hour so I zapped it with ctrl z and tried to
> >>>>> delete some more stuff out the webmin dir.  So, I have a new
> >>>>> question:
> >>>>> could something on the system be creating a file or files
> >>>>> constantly or
> >>>>> can the 251M that was alotted over spill on the / dir and I have to
> >>>>> delete down to 251M like memory is waiting to write to the hard
> >>>>> drive?
> >>>>> I slap my hands everytime I think I want to just restart the server
> >>>>> typical windows brainwashing.
> >>>>>
> >>>>> Thanks,
> >>>>> Eric
> >>>>>
> >>>>> Darin Perusich wrote:
> >>>>>
> >>>>>
> >>>>>
> >>>>>> or it could be /root.
> >>>>>>
> >>>>>> David J. Andruczyk wrote:
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>> cd / ; du -s *
> >>>>>>>
> >>>>>>> Odds are it's /lib/modules filled up if you have several kernels
> >>>>>>> installed..
> >>>>>>>
> >>>>>>>
> >>>>>>> --- eric <eric at bootz.us> wrote:
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>> File system            Size  Used Avail Use% Mounted on
> >>>>>>>> /dev/hdc3             251M  251M     0 100% /
> >>>>>>>> tmpfs                 758M  4.0K  758M   1% /dev/shm
> >>>>>>>> /dev/hdc8             101G   12G   85G  12% /home
> >>>>>>>> /dev/hdc7             358M  8.1M  331M   3% /tmp
> >>>>>>>> /dev/hdc4             4.6G  516M  3.9G  12% /usr
> >>>>>>>> /dev/hdc5             2.8G  1.6G  1.2G  58% /var
> >>>>>>>>
> >>>>>>>> My / directory is stuffed, I already have /var/logs linked into a
> >>>>>>>> /home dir
> >>>>>>>> how do I take out the trash sort of speak, I guess I should really
> >>>>>>>> know what the culprit file or files that caused the fill up as
> >>>>>>>> well
> >>>>>>>>
> >>>>>>>> Thanks again,
> >>>>>>>> eric
> >>>>>>>>
> >>>>>>>> _______________________________________________
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> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>> -- David J. Andruczyk
> >>>>>>>
> >>>>>>> __________________________________________________
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> >>>>>>>
> >>>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>
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