On Fri, 2008-06-13 at 21:54 -0700, Skunk Worx wrote:
I see that my f9 installs have a grub kernel argument
'root=UUID={hex}'
Could someone tell me a little about this? I've used things like
root=/dev/VolGroup00/LogVol00 for seems like ages.
It's a unique ID for each partition. The system can tell one partition
apart from another, no matter what the volume label, or physical
location (e.g. /dev/hda). Meaning that you can always refer to a
partition by it's UUID, and get the right one, no matter where it's
connected.
Does this impact things like disk cloning or jumbling packs between
machines?
Yes. Depending on your needs, it makes life easier, or more difficult.
If you want to move a drive about, and not have it clash with other
drives using the same volume labels (e.g. having fights with two drives
both labelled as /home or both as LogVol00), then UUID is a great
benefit.
On the other hand, if you want to take /home from one box and re-use it
as /home in another box, you'll need to rewrite the fstab file to either
use labels, or change the UUID from the old to the new.
I can't see it being a problem if you're cloning a drive. An exact copy
of one drive should be an exact copy. So a clone should work as a drop
in replacement.
Though if you're cloning drives to turn a group of drives into an array,
something tells me that that's going about things in the wrong way.
If so, is there a way to specify the older method in a kickstart
file?
You can refer to them just the same as you did beforehand (device names,
volume labels, or volume groups).
Also I know I can 'append' things in kickstart like
"vga=791
acpi=force reboot=b', but can I remove the 'rhgb quiet'?
"rhgb" is an *optional* graphical boot progress display. I found
booting quicker without the additional delay caused when this starts up.
And others have found they've had less graphic card driver problems
without it, too.
"quiet" is an *option* to hide some of the messages printed when the
system starts to boot.
--
[tim@localhost ~]$ uname -r
2.6.25.6-55.fc9.i686
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