Date: Tue, 28 Nov 2006 10:45:59 -0600 From: Guy Helmer <ghelmer@palisadesys.com> To: freebsd-stable@freebsd.org Subject: 6.x loosing record of free space after filesystem fills? Message-ID: <456C67C7.9030208@palisadesys.com>
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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? Thanks, Guy -- Guy Helmer, Ph.D. Chief System Architect Palisade Systems, Inc.
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