[vox-tech] Resizing Root Partition

Mark K. Kim vox-tech@lists.lugod.org
Tue, 23 Sep 2003 10:14:06 -0700 (PDT)


Your root is taking up too much space.  My primary system uses only 125MB
in root, even though I don't have a separate /tmp.  I'd look into why it's
so big.

Some ideas:
   1. Unmount everything but root (easier yet, run in single-user
      mode).  See if you got anything in /usr, /tmp, and /var.  They
      should be empty.

   2. If you got /opt or /pkg, move them to /usr and symlink.

   3. Your root home (probably /root or /) should stay pretty
      small.  Move things you don't need out of it
      (for example, downloaded files.)

      BTW, you shouldn't need to download anything into /root,
      really - you should download them to your user home directory,
      then install them as root, from your user home directory.

   4. Unmount everything but root, and type:

         cd /
         du -sH *

      which should tell you how much each directory is using up
      how much space.  CD into the big directories and type
      `du -sH *` again, then again, then again until you find
      the culprits.  Remove things like coredumps and such.

Also, when you install new apps, install them to /usr/local or /usr, not
root.  And don't move anything out of root without verifying it's OK.
Something like /etc shouldn't be moved out of root.

-Mark


On Tue, 23 Sep 2003, Richard Crawford wrote:

> I'm trying to install Java onto my server at home so that I can start
> mucking around with JSP and Tomcat.  Unfortunately, the Java SDK refuses
> to install, telling me that I don't have enough disk space.  I ran df to
> get the disk usage, and this is what I get:
>
> root@hagrid:~/
> # df -h
> Filesystem            Size  Used Avail Use% Mounted on
> /dev/hda1             486M  462M  4.0K 100% /
> /dev/hda6              25G  6.2G   17G  27% /home
> none                  125M     0  124M   0% /dev/shm
> /dev/hda7              99M  4.1M   89M   5% /tmp
> /dev/hda2             4.8G  1.5G  3.1G  32% /usr
> /dev/hda3             494M  167M  301M  36% /var
>
> My partition map looks like this:
>
>
> root@hagrid:~/
> # fdisk -l
>
> Disk /dev/hda: 255 heads, 63 sectors, 4865 cylinders
> Units =3D cylinders of 16065 * 512 bytes
>
>    Device Boot    Start       End    Blocks   Id  System
> /dev/hda1   *         1        64    514048+  83  Linux
> /dev/hda2            65       701   5116702+  83  Linux
> /dev/hda3           702       766    522112+  83  Linux
> /dev/hda4           767      4111  26868712+   5  Extended
> /dev/hda5           767       831    522081   82  Linux swap
> /dev/hda6           832      4098  26242146   83  Linux
> /dev/hda7          4099      4111    104391   83  Linux
>
> In this case, I wonder if it's best to resize the root partition, or to g=
o
> in and wipe out a bunch of files.  Thoughts?  Suggestions?
>
> Sliante,
> Richard S. Crawford
>
> http://www.mossroot.com   http://www.stonegoose.com/catseyeview
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>
>
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Mark K. Kim
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