topic Re: crw------- file in /var/tmp in Operating System - HP-UX

crw------- file in /var/tmp

Jerry Thompson_2 — Wed, 09 Mar 2011 16:10:24 GMT

Data Protector V6.11 reported file /var/tmp/rdskVOJa03706 as an error. Can it be deleted? It seems to match an entry in /dev/rdsk. I have a similar server with eight of these.

# cd /var/tmp
ll rd*
crw------- 1 root root 203 0x070000 Feb 10 2010 rdskVOJa03706

ll /dev/rdsk | grep 0x0700
crw-r----- 1 bin sys 188 0x070000 Feb 10 2010 c7t0d0

ll /dev/dsk | grep 0x0700
brw-r----- 1 bin sys 31 0x070000 Dec 8 2009 c7t0d0

Re: crw------- file in /var/tmp

Steven E. Protter — Wed, 09 Mar 2011 16:20:37 GMT

Shalom,

Files in /var/tmp are assumed to be deletable.

The only exception is if the process that created them still has a file handle open.

fuser -cu /var/tmp

If there are no open file handles they can be deleted.

Open file handles imply an open DP process.

You may need to use lsof to check the process if you find an open file handle.

SEP

Re: crw------- file in /var/tmp

Jerry Thompson_2 — Wed, 09 Mar 2011 16:27:51 GMT

did you mean:

'fuser -fu /var/tmp/rdsk...'?

'fuser -cu' reports the path is not a mount point.

Re: crw------- file in /var/tmp

Steven E. Protter — Wed, 09 Mar 2011 17:14:15 GMT

Hi again,

No, I meant.

fuser -cu /var/tmp

That is where the files are.

I'm guessing unless DP is running at this moment there are no file handles here.

These files may be the result of failed DP or crashed DP jobs.

Based on the date stamps, I'm pretty comfy deleting these files.

SEP

Re: crw------- file in /var/tmp

Jerry Thompson_2 — Wed, 09 Mar 2011 17:20:49 GMT

...but this is what I get and I don't see that as a answer but a miss use of the command.

# fuser -cu /var/tmp
/var/tmp: fuser: could not find file system mounted at /var/tmp.

Re: crw------- file in /var/tmp

Steven E. Protter — Wed, 09 Mar 2011 17:33:08 GMT

Sorry.

bdf /var/tmp
bdf /var

fuser -cu /var

I made an assumption, which makes me the first three letters of the word. :-)

I assumed that /var/tmp was its own file system because that is how I do systems.

That will give you open processes on /var

There will be a lot.

fuser -u /var/tmp

This will show open processes probably only of a DP backup is running a job at the moment.

root@rxq23hxd# fuser -u /var/tmp
/var/tmp:

SEP

Re: crw------- file in /var/tmp

Jerry Thompson_2 — Wed, 09 Mar 2011 17:36:11 GMT

that makes more sense. i will delete these files after confirming with fuser -u. Thanks bunches...

Re: crw------- file in /var/tmp

Dennis Handly — Thu, 04 Aug 2011 18:05:26 GMT

What HP-UX version are you using?
I remember 11.11 or so creating those character files there:
http://h30499.www3.hp.com/t5/System-Administration/Who-is-cluttering-var-tmp-with-char-dev-files-rdskAAA/m-p/4051670#M304578

Re: crw------- file in /var/tmp

Jerry Thompson_2 — Thu, 10 Mar 2011 17:47:10 GMT

HP-UX 11.23 on PA-Risc