Date: Mon, 08 Jan 2007 13:42:37 -0600 From: Guy Helmer <ghelmer@palisadesys.com> To: freebsd-stable@freebsd.org Subject: Re: 6.x loosing record of free space after filesystem fills? Message-ID: <45A29EAD.5050308@palisadesys.com> In-Reply-To: <20061128200321.GA65311@xor.obsecurity.org> References: <456C67C7.9030208@palisadesys.com> <20061128200321.GA65311@xor.obsecurity.org>
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Kris Kennaway wrote: > On Tue, Nov 28, 2006 at 10:45:59AM -0600, Guy Helmer wrote: > >> We're encountering some problems on FreeBSD 6.1 SMP [...]. >> >> df shows wildly incorrect values for available >> space, sometimes even showing more space available than there is allocated >> to the partition[...] > First I've heard of it. May not be resolved unless a developer can > reproduce it. > > Kris > I think we've finally found the cause of the problem - it wasn't just occurring after heavy use, but was visible right after filesystem creation! We regularly built new filesystems with "newfs -U -O 1 -b 65536 -f 8192" (a couple of our older products are still based on FreeBSD 4, so we built UFS1 filesystems for all our products). It seems that newfs with the -O1 option creates inconsistent metadata: fsck on a large, newly-built UFS1 filesystem complains in phase 5 with "SUMMARY INFORMATION BAD". I've filed a PR on it. Guy
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