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Date:      28 Jan 2003 20:27:12 -0500
From:      Lowell Gilbert <freebsd-questions-local@be-well.no-ip.com>
To:        freebsd-questions@freebsd.org
Subject:   Re: Deleted files not releasing their space (was Re: syslog message wrt inodes)
Message-ID:  <44ptqgoidr.fsf@be-well.ilk.org>
In-Reply-To: <3E36E3AF.8030201@potentialtech.com>
References:  <20030128093720.A26639@asu.edu> <3E36E3AF.8030201@potentialtech.com>

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Bill Moran <wmoran@potentialtech.com> writes:

> Let's see if I remember the details on this.
> I believe this happens when a file is deleted, but another program still holds
> a filehandle? to it.  Thus, if you delete Apache's log file (for example) but
> don't restart Apache, the space the logfile is using isn't truely freed.
> (This is why newsyslog.conf has a column for the PID of a process to restart).
> 
> So ... if you know which process had the files open, restart it (probably by
> sending it a -HUP).

Right.  That's why newsyslog(8) can send a signal on rotating a log file.

I'm not quite sure why this is relevant to the actual problem, because
it's not really *that* many inodes involved in log files, but then
again I'm not sure I completely understand the problem anyway...

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