Date: Tue, 28 Nov 2006 15:03:22 -0500 From: Kris Kennaway <kris@obsecurity.org> To: Guy Helmer <ghelmer@palisadesys.com> Cc: freebsd-stable@freebsd.org Subject: Re: 6.x loosing record of free space after filesystem fills? Message-ID: <20061128200321.GA65311@xor.obsecurity.org> In-Reply-To: <456C67C7.9030208@palisadesys.com> References: <456C67C7.9030208@palisadesys.com>
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[-- Attachment #1 --] On Tue, Nov 28, 2006 at 10:45:59AM -0600, Guy Helmer wrote: > We're encountering some problems on FreeBSD 6.1 SMP with a number of > end-user systems where a Postgresql database is growing to the point > where the filesystem is nearly full or completely runs out of free > space. After this point, df shows wildly incorrect values for available > space, sometimes even showing more space available than there allocated > to the partition (and our systems rely on df to determine when to send > warnings to end-users that the free disk space is getting low). We've > found the only way to correct the situation is to take the system down > to single-user mode and force a non-background fsck on the partition - > simply rebooting the system does not fix the situation. > > We're going to try setting debug.mpsafevfs to 0 in /boot/loader.conf to > see if this works around the problem. I've gone through the CVS logs > for src/sys/ufs/ffs/* but I haven't seen anything that would > specifically apply to this problem. Has anyone else seen this problem, > and by chance is it resolved for 6.2? First I've heard of it. May not be resolved unless a developer can reproduce it. Kris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFFbJYJWry0BWjoQKURAgR9AKDbaGlgsgX0gdT0jAy19aikQfaHCgCfdz8g 7i6q1XaagyIqXj5sQW7RyMo= =EbQv -----END PGP SIGNATURE-----
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