topic release the space in Operating System - HP-UX

release the space

hangyu — Fri, 13 Apr 2007 08:58:51 GMT

I have move some file from a volumn to another volumn , then I check by bdf and found that the space is not release ( that mean the used size is the same ) , except reboot the server , how can I release the size ? thx

Re: release the space

Sandman! — Fri, 13 Apr 2007 09:08:00 GMT

The process which has that file open is preventing the space from being released. You can determine that with fuser or lsof.

Re: release the space

DCE — Fri, 13 Apr 2007 09:11:31 GMT

You can get lsof from the link below, if you do not have it

http://gatekeep.cs.utah.edu/hppd/hpux/

Re: release the space

hangyu — Fri, 13 Apr 2007 09:12:31 GMT

thx reply ,

I check with these command , lsof path_name and fuser path_name but didn't find anything , can suggest what is wrong ? thx

Re: release the space

Steven E. Protter — Fri, 13 Apr 2007 09:12:54 GMT

Shalom,

Even when the file disappears, the space is not returned to the system until all process file handles are closed.

fuser -cu /filesystem

# lists the processes. If you want to kill the proccesses at a k to the options. This can disrupt normal system operations.

SEP

Re: release the space

James R. Ferguson — Fri, 13 Apr 2007 09:38:11 GMT

Hi:

From your description it sounds like you have a process that has a file open that has been otherwise removed. Until the last process using the file terminates, the space used by the file will not be released.

To identify the process use 'lsof' (available from the Porting Center):

http://hpux.cs.utah.edu/

Do:

# lsof +D /path +L1

Look for a 'NLINK' count of zero (0). This represents an open files that will vanish as soon as the last process it terminates.

Regards!

...JRF...