topic Re: root "/" file system is 100 % used. in Operating System - HP-UX

root "/" file system is 100 % used.

praveen.. — Thu, 06 Apr 2006 10:23:14 GMT

Hi,
root "/" file system is 100% used.
"/" contains this file and other necessary directories:

-rw------- 1 root sys 327552 Jan 21 09:02 core

Is "core" just a dump file from the OS? If so, it can be removed or not?

The file "core" should be removable or not?

please suggest

Re: root "/" file system is 100 % used.

Ivan Ferreira — Thu, 06 Apr 2006 10:25:20 GMT

Yes, you can remove the core file.

Re: root "/" file system is 100 % used.

Kent Ostby — Thu, 06 Apr 2006 10:25:59 GMT

Yes it can be removed.

Also do this:

find / -xdev -size +1000000c

This will find files of 1 meg or more that are on the / filesystem.

I suspect you may have something in /dev/rmt
as well.

Re: root "/" file system is 100 % used.

DCE — Thu, 06 Apr 2006 10:26:28 GMT

The core file contains information about the system when an application crashed. You can either delete it (and the information will be lost), or you can move to another mount point with enough space, and use it to determine the cause of the failure

Re: root "/" file system is 100 % used.

Ivan Ferreira — Thu, 06 Apr 2006 10:27:49 GMT

Also use:

To identify the largest directory:

du -skx *

To identify the largest files:

find / -type f -exec ls -l {} \; |sort +4 -nrb |head -10

Re: root "/" file system is 100 % used.

Peter Godron — Thu, 06 Apr 2006 10:28:32 GMT

Praveen,
core files can normally be removed. They are produced, when a process aborts.

Search for large files for possible removal with:
find / -xdev -size +100000c -exec ll {} \;

Re: root "/" file system is 100 % used.

Robert-Jan Goossens — Thu, 06 Apr 2006 10:28:55 GMT

Hi,

try to find the large directory. below output should be similar to yours.

# du -kx / | sort -rn | head -20
28982 /
19968 /sbin
5909 /etc
3824 /sbin/fs
2800 /etc/opt
2702 /patch
2661 /etc/opt/resmon
1717 /sbin/fs/vxfs
1614 /sbin/fs/hfs
1058 /etc/lvmconf
1024 /etc/opt/resmon/lbin
981 /etc/opt/resmon/lib
583 /etc/opt/resmon/log
553 /sbin/lib
525 /etc/X11
458 /etc/hpC2400
438 /sbin/init.d
330 /root
227 /root/.sw
225 /sbin/fs/cdfs

Regards,
Robert-Jan

Re: root "/" file system is 100 % used.

James R. Ferguson — Thu, 06 Apr 2006 10:29:07 GMT

Hi Praveen:

# file core

...will show "who" and "why" the file was created if you care. It can certainly be removed.

Also, if the root filesystem is full, look at '/dev' for a mis-typed backup device. A common mistake is to substitute the letter "o" for the number "0" thus creating a regular file in '/dev' which fills up '/' -- something like :

# /dev/rmt/om

Regards!

...JRF...

Re: root "/" file system is 100 % used.

praveen.. — Thu, 06 Apr 2006 12:59:23 GMT

hi,
thanks for you response,
I have deleted the core file.

root@quetzal:[/]# find / -xdev -size +1000000c
/etc/lvmconf/vg02.conf.old
/etc/lvmconf/vg01.conf
/etc/lvmconf/vg02.conf
/etc/lvmconf/vg01.conf.old
/etc/opt/resmon/lbin/mibmond
/etc/vx/static.d/build/vold.o
/etc/vx/type/fsgen/fs.d/vxfs/vxsync
/etc/vx/type/fsgen/vxplex
/etc/vx/type/gen/vxinfo
/etc/vx/type/gen/vxmake
/etc/vx/type/gen/vxmake_static
/etc/vx/type/gen/vxmend
/etc/vx/type/gen/vxplex
/etc/vx/type/gen/vxsd
/etc/vx/type/gen/vxvol
/etc/vx/type/raid5/vxmake
/etc/vx/type/raid5/vxmend
/etc/vx/type/raid5/vxplex
/etc/vx/type/raid5/vxsd
/etc/vx/type/raid5/vxvol
/etc/vx/type/static/vxconfigd
/etc/vx/type/static/vxedit
/etc/vx/type/static/vxmake
/etc/vx/type/static/vxprint
/etc/vx/type/static/vxrlink
/etc/vx/type/static/vxrvg
/etc/emcpdaemon
/sbin/fs/vxfs/mkfs
/sbin/fs/vxfs/extendfs
/sbin/fs/vxfs/fsck
/sbin/fs/vxfs/mount
/sbin/fs/vxfs/vxenablef
/sbin/fs/vxfs/vxumount
/sbin/sh
/sbin/lvchange
/sbin/lvcreate
/sbin/lvdisplay
/sbin/lvextend
/sbin/lvlnboot
/sbin/lvreduce
/sbin/lvremove
/sbin/lvrmboot
/sbin/pvchange
/sbin/pvcreate
/sbin/pvdisplay
/sbin/pvmove
/sbin/sdstolvm
/sbin/vgcfgbackup
/sbin/vgcfgrestore
/sbin/vgchange
/sbin/vgcreate
/sbin/vgdisplay
/sbin/vgexport
/sbin/vgextend
/sbin/vgimport
/sbin/vgreduce
/sbin/vgremove
/sbin/vgscan
/sbin/pvck
/sbin/awk
/sbin/init
/sbin/insf
/sbin/pax
/sbin/lvmerge
/sbin/getrunlvl
/sbin/kcshutdown
/sbin/lssf
/sbin/mksf
/sbin/rmsf
/sbin/kcboot
/sbin/pvremove
/sbin/vgchgid
/sbin/egettxt
/sbin/is_vxvmroot
/sbin/vxconfigd
/sbin/vxconvarrayinfo
/sbin/vxdctl
/sbin/vxdg
/sbin/vxdisk
/sbin/vxdmpadm
/sbin/vxiod
/sbin/vxmend
/sbin/vxplex
/sbin/vxrecover
/sbin/vxrelayout
/sbin/vxsd
/sbin/vxvmboot
/sbin/vxvol
/sbin/vxedit
/sbin/vxmake
/sbin/vxprint
/sbin/vxlicinst
/sbin/vxlicrep
/sbin/vxlictest
/sbin/lvchange.run
/sbin/lvsplit
/sbin/lvsync
/sbin/vgsync
/sbin/nomwcsyncd
/sbin/emc/emcpmgr
/sbin/emc/powervini
/sbin/powermt
/autst/TEMP/CPN_WITH_RECODE.GC.CMF
/autst/TEMP/FINAL_WH_HH_FILE.DAT

can i delete some more files?

Re: root "/" file system is 100 % used.

praveen.. — Thu, 06 Apr 2006 13:03:03 GMT

# du -kx / | sort -rn | head -20
397040 /
148792 /autst
148744 /autst/TEMP
124864 /etc
122096 /sbin
54416 /etc/vx
46792 /etc/vx/type
44432 /etc/lvmconf
22680 /sbin/fs
21120 /etc/opt
17784 /etc/vx/type/static
16248 /sbin/fs/vxfs
14376 /etc/vx/type/gen
10856 /etc/vx/type/raid5
10248 /etc/opt/resmon
8624 /sbin/emc
6944 /etc/vx/static.d
6720 /etc/vx/static.d/build
5856 /etc/opt/resmon/lbin
4664 /sbin/fs/hfs

Re: root "/" file system is 100 % used.

James R. Ferguson — Thu, 06 Apr 2006 13:03:22 GMT

Hi (again):

Well, the only things I see in your list off '/' that are not standard are the files in '/autst/'. I'd certainly move them out of the root directory!

Regards!

...JRF...

Re: root "/" file system is 100 % used.

praveen.. — Thu, 06 Apr 2006 13:25:39 GMT

can i delete these two files:
/etc/lvmconf/vg01.conf.old
/etc/lvmconf/vg02.conf.old

is there any need for these files?

Re: root "/" file system is 100 % used.

James R. Ferguson — Thu, 06 Apr 2006 13:33:05 GMT

Hi (aqain) Praveen:

The '/etc/lvmconf' directory contains the current and the previous ('.old') versions of LVM 'vgcfgbackup' command runs.

'vgcfgbackup' runs by default anytime you modify an LVM configuration. See the manpages for 'vgcfgbackup' along with other LVM commands like 'vgextend'. See too, the '-A' switch of 'vgextend'.

Therefore, you can remove the ".old" variations if you really need to do so and you are sure that your last LVM operation will not need to be backed-out with 'vgcfgrestore' using the ".old" file.

Regards!

...JRF...

Re: root "/" file system is 100 % used.

sathish kannan — Thu, 06 Apr 2006 20:44:30 GMT

Hello Praveen,
Before deleting any files from root filesystem if you are not sure, I would recommend them to move other filesystems or backup to a tape or somewhere else.

I would rather check for other files than system files as you mention /etc/lvmconf directories.

Regards
Sathish

Re: root "/" file system is 100 % used.

Nguyen Anh Tien — Thu, 06 Apr 2006 22:06:20 GMT

core file is memory dump file when system crashed.
You can delete it as normal
for more easy:
to see all core file
#find / -name core -exec ll {} \;
#find / -name core -exec rm {} \;
HTH

Re: root "/" file system is 100 % used.

Raj D. — Fri, 07 Apr 2006 00:35:44 GMT

Hi Praveen,

You can remove the core file , it is generated from application/process terminates abnormally. You can check the file and then delete it , and recover lost disk space.

Check with:
# file core
# strings core | more
( You can find information , from which application core file has generated ..etc.)

Cheers,
Raj.