[CentOS] df -h shows system at 100% used, but there is space left
heller at deepsoft.com
Fri Apr 24 19:25:59 UTC 2009
At Fri, 24 Apr 2009 09:43:57 -0700 CentOS mailing list <centos at centos.org> 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.
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