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root directory is 100% full?

Peter Ko_2
Frequent Advisor

root directory is 100% full?

Can someone help how to safely delete some files off the root? i noticed it is 100% full although the NNM still appears unaffected by it. Below is my files on the root:
________________________________

# ls -ls
total 277808
0 -rw-r--r-- 1 root sys 0 Nov 1 2006 -f
48 -rw------- 1 root sys 16666 Jun 12 00:11 .ICEauthority
16 -rw------- 1 root sys 152 Jun 12 00:11 .TTauthority
0 -rw------- 1 root sys 0 Jun 12 00:11 .Xauthority
16 drwxr-xr-x 11 root sys 8192 Jun 12 00:11 .dt
16 -rwxr-xr-x 1 root sys 5451 Nov 18 2006 .dtprofile
0 drwxr-xr-x 4 root sys 96 Nov 8 2006 .java
0 drwx------ 3 root sys 96 Nov 1 2006 .mozilla
16 -rw-r--r-- 1 root sys 10 Nov 1 2006 .mozilla-license
0 -r--r--r-- 1 root sys 0 Nov 7 2006 .ovweb.conf
16 -rwxrwxrwx 1 bin bin 1407 Nov 6 2006 .profile
0 drwxr-xr-x 2 root sys 96 Dec 12 2006 .ssh
16 drwxr-xr-x 6 root sys 8192 Nov 1 2006 .sw
0 drwxr-xr-x 2 root sys 96 Jan 5 2007 .vnc
0 lr-xr-xr-t 1 root sys 8 Nov 1 2006 bin -> /usr/bin
0 drwxrwxrwx 2 root sys 96 Nov 1 2006 cdrom
277488 -rw------- 1 root root 142065664 May 26 12:28 core
16 dr-xr-xr-x 13 bin bin 8192 Jun 11 23:52 dev
16 dr-xr-xr-x 30 bin bin 8192 Jun 11 23:53 etc
16 drwxr-xr-x 8 root root 8192 Nov 16 2007 home
0 lr-xr-xr-t 1 root sys 8 Nov 1 2006 lib -> /usr/lib
0 drwxr-xr-x 2 root root 96 Nov 1 2006 lost+found
16 -rw-rw-rw- 1 root sys 180 Nov 1 2006 lvextend.sh
0 dr-xr-xr-x 1 root root 1 Jun 11 23:51 net
16 dr-xr-xr-x 66 bin bin 8192 Nov 1 2006 opt
16 dr-xr-xr-x 13 bin bin 8192 Nov 1 2006 sbin
0 drwxr-xr-x 3 root sys 96 Nov 21 2006 scripts
16 -rw-rw-rw- 1 root sys 23 Apr 27 2007 shutdown.sh
16 dr-xr-xr-x 7 bin bin 1024 Jun 11 23:50 stand
16 drwxrwxrwt 12 root root 8192 Jul 10 21:58 tmp
16 dr-xr-xr-x 23 bin bin 8192 Nov 18 2006 usr
16 dr-xr-xr-x 23 bin bin 8192 Nov 1 2006 var
# bdf
Filesystem kbytes used avail %used Mounted on
/dev/vg00/lvol3 557056 557056 0 100% /
/dev/vg00/lvol1 298928 29456 239576 11% /stand
/dev/vg00/lvol8 4718592 1566056 3132128 33% /var
/dev/vg00/varOV 20480000 13109087 6910791 65% /var/opt/OV
/dev/vg00/lvol7 3653632 1710832 1927648 47% /usr
/dev/vg00/lvol4 212992 16256 195264 8% /tmp
/dev/vg00/lvol6 3211264 2094552 1107992 65% /opt
/dev/vg00/OV 3080192 1066358 1888016 36% /opt/OV
/dev/vg00/lvol5 32768 27520 5248 84% /home
#
10 REPLIES
Patrick Wallek
Honored Contributor

Re: root directory is 100% full?

This file should be perfectly safe to delete, and it will free up approx 140MB.

277488 -rw------- 1 root root 142065664 May 26 12:28 core
Dennis Handly
Acclaimed Contributor

Re: root directory is 100% full?

>Patrick: This file should be perfectly safe to delete

Right, that was easy. :-) You might want to use "file core" before you do, so you can track what application aborted.

If you keep getting them, you can do "mkdir core".
Sajjad Sahir
Honored Contributor

Re: root directory is 100% full?

Dear Friend


I am seeing one core file
277488 -rw------- 1 root root 142065664 May 26 12:28 core u can remove it
but before removing u should always check
the file type
by using the command file
file core

thanks and regards

Sajjad Sahir
Sharma Sanjeev
Respected Contributor

Re: root directory is 100% full?

Hi Peter

One core file is generated you can delete this.

277488 -rw------- 1 root root 142065664 May 26 12:28 core

Regards
Sanjeev
Everything is Possible as " IMPOSSIBLE" word itself says I M POSSIBLE
SoorajCleris
Honored Contributor

Re: root directory is 100% full?

Hi,

As our mates suggested you may remove the core file ( if it is a core file).

But investigate in to this, why the core file is existing there. It is recommended to have a differnt mount poing for this.

Regards,
Sooraj
"UNIX is basically a simple operating system, but you have to be a genius to understand the simplicity" - Dennis Ritchie
Duncan Edmonstone
Honored Contributor

Re: root directory is 100% full?

of course its actually the root *filesystem* that's 100% full, not just the root directory. So to look for "large" files in the root filesystem you might try:

find / -size +10000000c -xdev -exec ll {} \;

that should show you files larger than 10MB (approximately)... of course you'd still need to figure out if you can actually delete any of those.

HTH

Duncan

HTH

Duncan
Johnson Punniyalingam
Honored Contributor

Re: root directory is 100% full?

>>>But investigate in to this, why the core file is existing there. It is recommended to have a differnt mount poing for this<<

Yes, You are right


A core file is the result of an ordinary program aborting for any number of reason such as an unexpected signal, bad code, failed device, ... . A crash dump occurs when the kernel itself undergoes an unexpected event.

links, it should give better understanding of Core dumps and crash dumps,

http://docs.hp.com/en/J2237-90005/ch06s05.html
[Generating and Retrieving System Core Dumps]

http://en.wikipedia.org/wiki/Core_dump

http://www.unixguide.net/hp/hpuxcrashdump.shtml


Thanks,
Johnson
Problems are common to all, but attitude makes the difference
Peter Ko_2
Frequent Advisor

Re: root directory is 100% full?

Thank you everyone's help, i did a "rm core" and the root now is about 75%.
Steven E. Protter
Exalted Contributor

Re: root directory is 100% full?

Shalom,

That is still a little high.

I would have moved the core file to a file system and taken a look at it there.

du -k | sort -rn | more

To find other biggies in root

SEP
Steven E Protter
Owner of ISN Corporation
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Mel Burslan
Honored Contributor

Re: root directory is 100% full?

Considering you have half a gig worth space in "/" 75% full is not normal. Run this command to find any files larger than 1MB (roughly) and if you can not make sense out of them to decide which ones are safe to delete, post the output here to get further advice. If you encounter any core files in the listing 99.99% of the time, it is safe to delete those. Here is the command:

find / -xdev -size +1000000c | xargs ll | tee /tmp/largefiles.txt

this will display the file list on the screen while creating a copy of the list to file called /tmp/largefiles.txt for future use or editing.

Also, please assign points to the replies respective of how useful they are/were to you, solving your problem or enhancing your understanding of HP-UX.
________________________________
UNIX because I majored in cryptology...