Re: fstab question

Andrei Smirnov wrote:
> In good old days I could understand my fstab because it clearly showed
> what /dev/hd was assigned to what partition, like
>
> /dev/hda1     /            ext2    defaults        1 1
>
> Nowdays I can't see it anymore:
>
> LABEL=/       /            ext2    defaults        1 1
> LABEL=/arc    /arc         ext2    defaults        1 2
> LABEL=/home1  /home        ext2    defaults        1 2
> LABEL=/usr/local  /opt     ext2    defaults        1 2
>
> And look how those labels got screwed up during system reinstall and
> partition reassignment. So, where is that information what HD is
> associated with what LABEL?

That's cool.  In fstab(5) it says

        Instead of giving the device explicitly, one may  indicate
        the  (ext2 or xfs) filesystem that is to be mounted by its
        UUID or volume label (cf.   e2label(8)  or  xfs_admin(8)),
        writing  LABEL=<label>  or UUID=<uuid>, e.g., `LABEL=Boot'
        or `UUID=3e6be9de-8139-11d1-9106-a43f08d823a6'.  This will
        make  the  system  more  robust: adding or removing a SCSI
        disk changes the disk device name but not  the  filesystem
        volume label.

You can use e2label to find out the associated partitions, assuming they
have actually been named as such during reinstallation.  Unless you are
going to be doing something fancy, you can rename the LABEL=* part in
the fstab using the traditional method.

e2label /dev/hda3 ""

Jonathan

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