Server 9000 - root file system is full (rush please)

[Sylvie Vezina]

Hi,
By mistake I performed dmesg >>dmesg.log and the result is my File System is full.....
I think that this bad command has created core file. I hesitated to delete it? Could you tell me if I will on trouble if I delete this file or not?
Server is Model L1000 with Unix 11.0
File System: /dev/vg00/

PS: I hope to resolv this problem without rebooting server.....

[Rajeev Shukla · Accepted solution]

You can delete all core files fi you dont want to debug why the core file was created.
Some applications sometimes for some reasons create core files, which can be with the help of debugging tool be helpfull in findig the reason. But thats not required always,
So for now first thing is either move the core file to another filesystem which has space and discuss with HP why dmesg command created a core or delete theat core file.

[John Payne_2]

You have a core file in /dev/vg00? Or the dmesg.log has filled /?

If you have a core file there, do a 'file /path/to/core', find out what caused the core file, then delete it. If the demsg.log filled /, delete it. Short of that, do you have a 'bleeder' process filling /etc/rc.log? You shouldn't, but it is possible.

Rebooting will not clear up the problem if it is a core file or this dmesg.log or something like that, as they all maintain state across reboots...

Hope it helps, and post if it doesn't.

John

[Steven E. Protter]

Most likely cause:

Accidental file copy to the root fs.

This code will make it easy to find large files, run it.

du -kx / | sort -rn

du -kx / | sort -rn /tmp/bigfiles

The seond version will put it in a file.

You should also look for non-device files in /dev/rmt Thats were a bad attempt to write to tape might end up.

I keep a 100 MB dummy file on root that I can delete when this stuff happens. It gives me breathing room while I diagnose the problem. Thats for future reference.

SEP

[Sylvie Vezina]

Thank you. I've moved core file and It works. I will contact support to submit my core file. thanks