The amount shown under "Avail" does not include the reserve, even if it is set. If the reserve is used, then "avail" (and "Use%") become a negative value. For example it might say -2.5GB Available. The "Size" does include the reserve however. I agree with Jake that this is due to it rounding 99.5% used to a whole number. -- Eric On Fri, Apr 24, 2009 at 2:25 PM, Robert Heller <heller@xxxxxxxxxxxx> wrote: > At Fri, 24 Apr 2009 09:43:57 -0700 CentOS mailing list <centos@xxxxxxxxxx> wrote: > >> >> Has anyone seen output like this before? Notice on my /dev/md0 That it >> reports 100% used, but also 5.3 Gb available. What would cause this? >> >> >> >> # df -h >> Filesystem Size Used Avail Use% Mounted on >> /dev/sda2 71G 1.6G 66G 3% / >> /dev/sda1 99M 22M 73M 23% /boot >> tmpfs 506M 0 506M 0% /dev/shm >> /dev/md0 903G 851G 5.3G 100% /home >> >> >> Thanks in advance! > > There is a 'reserve' of space, that only root can write to. In the case > of /dev/md0 above, normal users will get a 'no space left on device' > error trying to write files. root, however, can still manage to write > another 5.3 gig before encountering this error. It only shows up as so > large because the reserve space is a *percentage* of the total file > system, and /dev/md0 is a huge file system. > >> >> d >> >> >> _______________________________________________ >> CentOS mailing list >> CentOS@xxxxxxxxxx >> http://lists.centos.org/mailman/listinfo/centos >> >> > > -- > Robert Heller -- 978-544-6933 > Deepwoods Software -- Download the Model Railroad System > http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows > heller@xxxxxxxxxxxx -- http://www.deepsoft.com/ModelRailroadSystem/ > > _______________________________________________ > CentOS mailing list > CentOS@xxxxxxxxxx > http://lists.centos.org/mailman/listinfo/centos > _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos