topic Re: root full in Operating System - HP-UX

root full

vytas — Thu, 14 Nov 2002 14:59:28 GMT

Hi, I have a problem my server / is full 100% with du command I sea what not a file or folder isnt so big to utilze /. Witch fuser I cant sea any open file by some process.
After restart / become 50%, I fink that some procesess utilize my /, but how. And how to prevent it.

Re: root full

Pete Randall — Thu, 14 Nov 2002 15:01:25 GMT

How about a backup process writing to /dev/rmt/om (that's the letter o rather than the number 0)? How about a core dump in progress?

Pete

Re: root full

Ken Hubnik_2 — Thu, 14 Nov 2002 15:07:16 GMT

Check your /dev directory. Sometimes a backup could be running with /dev/rmt/om. Instead of being zero 0m a letter o is keyed causeing the backup to write in /dev/rmt.

Re: root full

Kellogg Unix Team — Thu, 14 Nov 2002 15:08:09 GMT

Is your /tmp part of / or is it mounted separately? Look for open files for / when it becomes full (or about to become full). The utility is 'lsof'.

Its a good starting point.
...Manjeet

Re: root full

Kellogg Unix Team — Thu, 14 Nov 2002 15:13:18 GMT

hmmm ... if a backup is accidentally written to /dev/ directory how rebooting is bringing it back to 50%?

Maybe a process is not releasing the disk space or /tmp is getting full and if you have clear_tmp=1 in /etc/rc.config.d/clean_tmps, once it reboots, /tmp is cleared!

...Manjeet

Re: root full

vytas — Thu, 14 Nov 2002 15:13:53 GMT

backup process isnt runing.

"How about a core dump in progress?"

How to check dump in progres?
When dump is wroten to disk it has name core, but how to check dump in progress ?.

Re: root full

vytas — Thu, 14 Nov 2002 15:17:03 GMT

/ and /tmp is in separete lvol

Re: root full

Kellogg Unix Team — Thu, 14 Nov 2002 16:11:16 GMT

Do you mount some filesystems 'after' the server is up? If the mount point is not empty, you will never see that in your analysis. May be a far-fetched thought !

I would still go for lsof utility. Look at -

http://hpux.cs.utah.edu/hppd/hpux/Sysadmin/lsof-4.64/

...Manjeet

Re: root full

Domenico_5 — Thu, 14 Nov 2002 16:50:18 GMT

hi

Sometimes same daemons in hang write the information on /.

you can download lsof for check which file is open and which daemon is writing.

regards