From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Thu, 07 Sep 2006 19:35:09 -0700 (PDT) Received: from larry.melbourne.sgi.com (larry.melbourne.sgi.com [134.14.52.130]) by oss.sgi.com (8.12.10/8.12.10/SuSE Linux 0.7) with SMTP id k882YaDW006722 for ; Thu, 7 Sep 2006 19:34:47 -0700 Date: Fri, 8 Sep 2006 12:33:39 +1000 From: David Chinner Subject: Re: Wrong free space reported for XFS filesystem Message-ID: <20060908023339.GF10950339@melbourne.sgi.com> References: <9a8748490609060154ye8730b0n16e23524010a35e4@mail.gmail.com> <20060906230238.GJ5737019@melbourne.sgi.com> <9a8748490609070717q6ed9111ckdc3de025dc44938b@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9a8748490609070717q6ed9111ckdc3de025dc44938b@mail.gmail.com> Sender: xfs-bounce@oss.sgi.com Errors-to: xfs-bounce@oss.sgi.com List-Id: xfs To: Jesper Juhl Cc: Linux Kernel Mailing List , xfs@oss.sgi.com On Thu, Sep 07, 2006 at 04:17:53PM +0200, Jesper Juhl wrote: > On 07/09/06, David Chinner wrote: > >On Wed, Sep 06, 2006 at 10:54:34AM +0200, Jesper Juhl wrote: > >> For your information; > >> > >> I've been running a bunch of benchmarks on a 250GB XFS filesystem. > >> After the benchmarks had run for a few hours and almost filled up the > >> fs, I removed all the files and did a "df -h" with interresting > >> results : ..... > >So the in-core accounting has underflowed by a small amount but the > >on disk accounting is correct. > > > >We've had a few reports of this that I know of over the past > >couple of years, but we've never managed to find a reproducable > >test case for it. > >Can you describe what benchmark you were runnin, wht kernel you were > >using > > The kernel is 2.6.18-rc6 SMP Ok, so it's a current problem.... > >and whether any of the tests hit an ENOSPC condition? > > > That I don't know. > > The script I was running is this one : That doesn't really narrow down the scope at all. All that script tells me is that problem is somewhere inside XFS.... :/ Can you try to isolate which of the loads is causing the problem? That being said, this looks like a good stress load - I'll pass it onto our QA folks... Cheers, Dave. -- Dave Chinner Principal Engineer SGI Australian Software Group