mystery /var space usage

Loren M. Lang lorenl at
Fri Jan 28 04:34:45 PST 2005

On Thu, Jan 27, 2005 at 11:52:23AM +0200, Nelis Lamprecht wrote:
> Hi,
> This is not one of those "I've run out of space on /var issues" but
> rather "what the hell is using up the space" issue.
> My /var file system shows:
> /dev/amrd0s1e   9.8G   4.8G   4.2G    53%    /var
> A du -h of /var shows a total of 616M data only. First thing that came
> to mind is some process which is holding onto data so I tried
> restarting various daemons - cyrus, imapd, exim, apache and still no
> change. I've checked with fstat and lsof to see if I can see anything
> suspicious but nothing out of the ordinary shows up.

I find lsof very helpful in this case.  It even tells you the sizes of
deleted files that are still held open by which process.

> Baring in mind this is a production mail server with about 60 000
> accounts, does anyone have any other suggestions which I might try ? I
> could just boot into single user mode and back out which will probably
> solve my problem now but for obvious reasons I would like to know what
> is causing the added usage of /var. I'm running 4.10 currently but
> plan to update that to 4.11 if I have to reboot.
> Thanks for your reply.
> Regards,
> Nelis
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