fstab

[Rutger van Haasteren]

On Jan 30, 2008 3:10 PM, Derek Broughton <news at pointerstop.ca> wrote:

> Sam Fielder wrote:
>
> > Karl Larsen wrote:
> >>     I come from Fedora and I studied the Ubuntu fstab and have
> >> questions. Here is what I think is the line that boots Ubuntu:
> >>
> >> # /dev/hda8
> >> UUID=a9c1cb61-ddfd-44f6-88b0-6dc976daf9ca /               ext3
> >> defaults,errors=remount-ro 0       1
> >>
> >> So I left that working but I have never seen the UUID= before. Can
> >> someone explain that?
> >>
> ...
> > The uuid is a unique identifier for each piece of hardware, kind of like
> > a volume name.
>
> No, it's not (at least in this case).  It's a unique identifier to a
> _filesystem_.  Which is why I find changing the fstab this way to be not a
> great idea.
>
> aiui, this change was made so that fstab wouldn't break when they
> changed /dev/hd* to /dev/sd* - but now it will break any time you reformat
> a partition.
>

It is also annoying when cloning a partition, and thus the filesystem (e.g.
with dd). Macs have the same problem by the way...

/Rutger
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