[CentOS] How do I check the real size of a filesystem?
William L. Maltby
CentOS4Bill at triad.rr.com
Fri Jul 4 14:30:06 UTC 2008
On Fri, 2008-07-04 at 14:09 +0100, Kevin Thorpe wrote:
> > Kevin Thorpe wrote:
> > > I'm having a spot of bother with a large (900GB) partition.
> > > fdisk claims it's 900GB. I made an ext3 fs on it and df says it's
> > > 94GB. Which is correct? Or did I do something wrong?
> > If this partition is on a LARGER drive, you may need to use
> > parted and
> > not fdisk to create your partitions. Large drives need gpt
> > labels and
> > are not able to be partitioned with fdisk.
> > However, that is not usually a problem with 900GB drive.
> parted claims it's 879GB so the partition appears to be ok. Have I
> managed to format a small filesystem on a large partition?
I suggest running e2fsck -n. See the man page. Then, think of the -m
parameter. The default, IIRC, is 5%. On small drives of the past this
was appropriate. Now, I make most of mine with 1%.
900GB * .05 = appx. 45GB. There's your loss.
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