df does not show free space

Florian Diesch diesch at spamfence.net
Sat Aug 23 15:06:11 UTC 2008


Colin Brace <cb at lim.nl> wrote:

> Rashkae-2 wrote:
>> 
>> Can you give us the contents of your fstab as well as /proc/mounts
>> /etc/mtab? (err, you'll have to revert the fstab so we can see it
>> broken)  This problem doesn't appear to be universal by any means.
>> 
>> And bare with me for this train of thought.  have you ever experimented
>> with xfs filesystem on your root partition?
>
> Rashkae, I reverted my fstab but I am having difficulty reproducing the
> problem now. :(
>
> What I did discover though was the the fstab entry for the root partion had
> an *incorrect* UUID. When I used tune2fs to determine the correct value and
> entered that in fstab, then du worked as it should.
>
> What I don't understand at this point is how my root partition was getting
> mounted at all. At some point earlier in the boot process, does root get
> mounted in another way?

The kernel mounts / read-only before it starts init. It gets the
device from the kernel parameter "root", usually set in the boot
manager. init than remounts / read-write.




   Florian
-- 
<http://www.florian-diesch.de/>
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