jazzman on 9 Dec 2007 02:06:39 -0000


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Re: [PLUG] Ubuntu & Drive Order


But don't I still need the /dev/sdX names when building the raid array or 
can I use the UUID for that as well?


On Sat, 8 Dec 2007, K.S. Bhaskar wrote:

> When you have a drive mounted, you can use vol_id to identify the UUID
> of the file system.  Then modify the /etc/fstab entry for that file
> system to identify it by UUID rather than by device+partition, e.g.:
> 
> kbhaskar@bhaskark:~$ sudo vol_id --uuid /dev/sda1
> 4dd1d683-189c-4ff1-91a9-f8b9e315022b
> kbhaskar@bhaskark:~$ grep -i 4dd1d683-189c-4ff1-91a9-f8b9e315022b /etc/fstab
> UUID=4dd1d683-189c-4ff1-91a9-f8b9e315022b /               jfs
> defaults,errors=remount-ro 0       1
> 
> (Look out for line breaks - there are exactly 4 lines in the block above.)
> 
> -- Bhaskar
> 
> On Dec 8, 2007 5:19 PM,  <jazzman@exdomain.org> wrote:
> > Sorry, this is new to me... how do I relate that to any given drive?
> > Everytime I make a hardware change and reboot the drives get new /dev/sdX
> > designations... Occasionally I'll also have a drive appear in the /dev/sdX
> > listing but not be accessible...
> >
> > Any ideas? If this keeps reordering drives I don't think this raid array
> > idea is going to work...
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