On Thu, 1 Dec 2005, Christopher Friesen wrote:
>
> Someone noticed this on one of our machines. The rootfs is a 256MB tmpfs
> filesystem. Depending on how you check the size, you get two different
> answers.
>
> [email protected]:/root> df -kl
> rootfs 262144 255684 6460 98% /
>
> [email protected]:/root> du -sxk /
> 204672 /
>
> Anyone know what's going on?
df tells you what the filesystem says is in use or free, via statfs.
du goes looking at the contents of the filesystem, totalling stats.
Any files unlinked but held open will be counted by df but not by du.
There might also be a discrepancy over indirect blocks, I'm not sure.
Hugh
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