Date: Thu, 05 Feb 2004 16:46:28 -0500 From: "HOLLOW, CHRISTOPHER" <christopher.hollow@cgi.com> To: "Herbert Wolverson" <herbert@charizard.tsghelp.com> Cc: freebsd-questions@freebsd.org Subject: Re: Free space wierdness Message-ID: <4022B9B4.1050600@cgi.com> In-Reply-To: <20040205211207.GA25512@charizard.tsghelp.com> References: <20040205211207.GA25512@charizard.tsghelp.com>
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UNIX file caching. The files were likely deleted but still open by some process and therefore still taking up space. The reboot killed the process, released the file and -viola- the free space was reported correctly. HTH, Christopher Hollow Herbert Wolverson wrote: >I have a system running FreeBSD 4.9-RELEASE. It primarily functions as a firewall and >router, and is generally pretty lightly loaded (load averages around 0.2). It >is a low end system (P200, 64mb RAM, 2 gig hard drive), and is generally >stable as a rock. > >The system has drives setup as follows: >/ 256M (UFS) >/usr 1.2gb (UFS+Softupdates) >(/var and /tmp are linked onto /usr/var and /usr/tmp respectively) > >This morning I noticed that the "/" partition was at 108% utilization, >and "df -h" looked like this (approximately): > >Filesystem Size Used Avail Capacity Mounted on >/dev/ad0s1a 252M 256M -8M 108% / > >Oddly, "du -h -d1 -x" showed only a total of 29Mb used on the partition! >The output looked like this: > >su-2.05b# du -h -d1 -x > 68K ./dev >2.0K ./usr >2.7M ./stand >1.3M ./etc >512B ./proc >4.0M ./bin >542K ./boot >2.0K ./mnt >6.4M ./modules > 30K ./root > 12M ./sbin >4.0K ./tmp >4.0K ./oldvar > 29M . > >When I rebooted the system (without deleting any files), "df -h" showed >the following: > >Filesystem Size Used Avail Capacity Mounted on >/dev/ad0s1a 252M 29M 203M 12% / > >This is good, since the correct amount of free space now shows, and the >server is back to running perfectly. Can anyone shed any light as to why >this discrepancy happened in the first place? I'd love to know what I can do to avoid ever having to worry >about this again! > >Thanks, >Herbert Wolverson, >The Turner Stephenson Group, Inc. >http://www.tsghelp.com/ >_______________________________________________ >freebsd-questions@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-questions >To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > > > > -- Christopher Hollow - Technical Consultant Infrastructure & Technology Support Toronto, ON
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