Am I losing disk space?????

Am I losing disk space?????

Post by Richard J. Procassin » Thu, 15 Sep 1994 00:57:22



Hey Linuxers,

        When I do a 'df' to determine the amount of free disk space I
have on my Linux partition, I get the following information returned
to me:

Filesystem         1024-blocks  Used Available Capacity Mounted on
/dev/hda2             315000  122350   176900     41%   /

        If one adds the number of 1024 byte blocks used and available
(122350 + 176900 = 299250), we find that sum to be 15750 blocks less
than the total number of blocks.  This is an ext2fs filesystem under

on here?  Where did this extra 15+ Mbytes go to?  Is this an
indication of disk fragmentation?  If so, what utility is available to
defragment the disk?

        Thanx in advance...
--

                                Dr. Richard Procassini
                                Methods Development Group
                                Mechanical Engineering Department
                                Lawrence Livermore National Laboratory
                                Mail Stop L-122
                                P.O. Box 808
                                Livermore, CA  94551

                                (510)424-4095


 
 
 

Am I losing disk space?????

Post by Greg Cis » Thu, 15 Sep 1994 05:55:06



> Hey Linuxers,

>    When I do a 'df' to determine the amount of free disk space I
> have on my Linux partition, I get the following information returned
> to me:

> Filesystem         1024-blocks  Used Available Capacity Mounted on
> /dev/hda2             315000  122350   176900     41%   /

>    If one adds the number of 1024 byte blocks used and available
> (122350 + 176900 = 299250), we find that sum to be 15750 blocks less
> than the total number of blocks.  This is an ext2fs filesystem under

> on here?  Where did this extra 15+ Mbytes go to?  Is this an

This is one of the marvels of unix... There aprox. 5% reserved for the root
or who ever else is in charge. I tink you can change this % when you re-partition.
But, Ive never done it. You can still copy files into that 5% though. So there
are only special cases where this is a big problem. One of my partitions on my
SUN is at 106%...
> indication of disk fragmentation?  If so, what utility is available to
> defragment the disk?

>    Thanx in advance...
> --

>                            Dr. Richard Procassini
>                            Methods Development Group
>                            Mechanical Engineering Department
>                            Lawrence Livermore National Laboratory
>                            Mail Stop L-122
>                            P.O. Box 808
>                            Livermore, CA  94551

>                            (510)424-4095




 
 
 

Am I losing disk space?????

Post by Hans de Vreug » Thu, 15 Sep 1994 23:42:14



>This is one of the marvels of unix... There aprox. 5% reserved for the root
>or who ever else is in charge. I tink you can change this % when you re-partition.

No need. There is /sbin/tune2fs to do just that (and other things as well).
IMHO I think that 5% is to much space for most disks nowadays: it is just an
overflow area for root processes so that your system doesn't crash after you
run out of disk space. You don't need more that a couple of Megs for that (and
on /home you need just about zip).
--
Hans de Vreught                  | John von Neumann:

Delft University of Technology   | you don't understand things,
The Netherlands                  | you just get used to them.
 
 
 

Am I losing disk space?????

Post by Yasuo Ohga » Thu, 15 Sep 1994 20:41:58



: > Hey Linuxers,
: >
: >  When I do a 'df' to determine the amount of free disk space I
: > have on my Linux partition, I get the following information returned
: > to me:
: >
: > Filesystem         1024-blocks  Used Available Capacity Mounted on
: > /dev/hda2             315000  122350   176900     41%   /
: >
: >  If one adds the number of 1024 byte blocks used and available
: > (122350 + 176900 = 299250), we find that sum to be 15750 blocks less
: > than the total number of blocks.  This is an ext2fs filesystem under

: > on here?  Where did this extra 15+ Mbytes go to?  Is this an

: This is one of the marvels of unix... There aprox. 5% reserved for the root
: or who ever else is in charge. I tink you can change this % when you re-partition.
: But, Ive never done it. You can still copy files into that 5% though. So there
: are only special cases where this is a big problem. One of my partitions on my
: SUN is at 106%...

You can use tune2fs to do that w/o repatition/reformat, I think.
I never did, so I'm not sure if it works.

: > indication of disk fragmentation?  If so, what utility is available to
: > defragment the disk?

there are defrag*.tgz. Again, I've never use it.

: >
: >  Thanx in advance...
: > --
: >
: >                          Dr. Richard Procassini
: >                          Methods Development Group
: >                          Mechanical Engineering Department
: >                          Lawrence Livermore National Laboratory
: >                          Mail Stop L-122
: >                          P.O. Box 808
: >                          Livermore, CA  94551
: >
: >                          (510)424-4095
: >

--
Yasuo Ohgaki

 
 
 

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my office ultra 10 that cost a heck of a lot more with the external disk
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Call EIS.  They'll take care of you.

Did I say EIS??? ;)

There are a few other places that sell OEM and clones too.  Go to Yahoo
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because they're manufactured by Sun but I'm not sure about the clones.  So
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JOHN

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