Ross S. W. Walker wrote:
The entire use all four disks for /boot makes no sense if two disks
belonging to the same mirror for the lvm go down. Please stop this
nonsense about surviving everything to no benefit. You can have three
disks fail and still have a working /boot. For what?
I think the idea of the 4 partition raid1 was more of, what else is he
going to do with the 200MB at the beginning of each disk which he has
because of partition symmetry across drives?
Personally I think he is being overly paranoid about more than 2 disks
failing at once since the odds are really slim that will happen, and not
paranoid enough about all 4 disks failing because most things that would
cause 2 to die (or be erased/corrupted/whatever) will kill all 4 of them.
Makes sense to just dup the partition setup from one to the other and
now with grub and a working /boot on each disk the order of the drives
is no longer important, he can take all 4 out, play 4 disk monty, slap
them back in and the system should come up without a problem.
One thing that might prove useful later is to leave the space for a
duplicate system (/) partition as a raid1 on the 3rd and 4th drives that
you don't use yet. Then when you want to upgrade to the next OS rev or
a different distribution, install on this unused partition and configure
grub to dual-boot. If you have any problem you can have the old version
back in the time it takes to reboot.
--
Les Mikesell
lesmikesell@xxxxxxxxx
_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos
