Date: Fri, 28 Jun 1996 20:34:39 -0700 From: "Jordan K. Hubbard" <jkh@time.cdrom.com> To: Dan Polivy <danp@carebase3.jri.org> Cc: stable@freebsd.org Subject: Re: whoa...somethings wrong.. Message-ID: <7461.836019279@time.cdrom.com> In-Reply-To: Your message of "Fri, 28 Jun 1996 23:03:07 EDT." <Pine.BSF.3.91.960628230052.23730D-100000@carebase3.jri.org>
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> Hmm, maybe it is just me, but does this df output look odd to you? > > Filesystem 1K-blocks Used Avail Capacity Mounted on > /dev/sd0a 352926 346960 -22270 107% / > /dev/sd0s1f 1206856 604326 505980 54% /usr > /dev/sd0s1e 302222 55362 222682 20% /var > procfs 4 4 0 100% /proc > > Umm, if the space free is negative, where is all of the data going? is > it stored in memory or swap space until room is freed for it to go where > it is supposed to? Hmmm... Classic UNIX, actually. Filesystems have a hidden 10% float (well, I believe this is adjustable but 10% is the general default), much as a gas gauge will read empty when you've still got a gallon or two left. :-) Historically this was because a filesystem that was truly 100% full would perform much more poorly than one below the limit, and only root is capable of eating the "float", resulting in what looks like a negative amount of space free. When you reach 110%, you'll REALLY be full. :-) Jordan
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