Run the command ³du -ckxs /*². This will give you the sizes of the
directories found in the root filesystem, and won¹t go down the mounted
filesystems. What are the largest directories found? This should be where
the problem lies.

Sample:

ts00086@clld0001026 /:0 $ sudo du -ckxs /*
30380   /apps
9432    /bin
99739   /boot
4       /cgroup
192     /dev
33456   /etc
20      /home
399008  /lib
27676   /lib64
16      /lost+found
4       /media
4       /misc
8       /mnt
4       /net
397192  /opt
du: cannot access `/proc/6041/task/6041/fd/4': No such file or directory
du: cannot access `/proc/6041/task/6041/fdinfo/4': No such file or
directory
du: cannot access `/proc/6041/fd/4': No such file or directory
du: cannot access `/proc/6041/fdinfo/4': No such file or directory
0       /proc
504     /root
17272   /sbin
0       /selinux
4       /shares
324896  /sites
4       /srv
0       /sys
60      /tmp
4       /unixadm
4065560 /usr
1737336 /var
7142775 total
ts00086@clld0001026 /:1 $


(I¹m not sure the -x switch actually worked. But you know where your
filesystems are mounted, so ignore those.)

In this case, I have a /sites directory that has some space tied up in the
root filesystem, that could have been better controlled by placing it in
its own filesystem. /apps, /opt, /home, /boot, /var and /opt are their own
filesystems, so I can discount that usage. /bin, /etc, /lib, /lib64,
/sbin, /usr are fairly static, so I can generally ignore them as well. So,
my concern would be the /sites directory, and how I could move and isolate
it.
-- 
Robert P. Nix | Sr IT Systems Engineer | Data Center Infrastructure
Services

Mayo Clinic | 200 First Street SW | Rochester, MN 55905
507-284-0844 | [email protected]
"quando omni flunks moritati"




On 1/25/16, 9:34 AM, "Linux on 390 Port on behalf of Ram Jam"
<[email protected] on behalf of [email protected]> wrote:

>/home/opt/tmp/usr/var All have their own logical volume
>I will look into these option you both have provided. Am thankful for
>more options too.
> 
>
>    On Monday, January 25, 2016 9:27 AM, "van Sleeuwen, Berry"
><[email protected]> wrote:
> 
>
> What is filling up your / filesystem? If it's rapidly filling up then I
>would expect a directory with RW data is in the / filesystem. Such as
>/home.
>
>The easiest would be to add a minidisk and move the directory that fills
>up into that new disk. Next mount that disk on that mountpoint. Usually
>you will already have directories such as /usr and /home on separate
>(mini)disks.
>
>Met vriendelijke groet/With kind regards/Mit freundlichen Grüßen,
>Berry van Sleeuwen
>
>
>-----Original Message-----
>From: Linux on 390 Port [mailto:[email protected]] On Behalf Of Ram
>Jam
>Sent: Monday, January 25, 2016 4:01 PM
>To: [email protected]
>Subject: Expand root filesystem, SLES 11
>
>New to the list. Extremely new to Linux and Z systems.
>
>I need to expand the / filesystem on a server running SLES 11.3 (under
>z/VM 6.3)
>
>The server was built by my predecessor to the specifications outlined in
>the Virtualization Cookbook for SLES 11.(/dev/dasda1 with 384 MB).
>/ is rapidly approaching 100%
>Since / is not on LVM, how can I expand the / filesystem?
>I am thankful for any help or nudges in the right direction.
>Ram
>
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