F18 re-add missing disk radi1

[Reindl Harald]

Am 19.05.2013 16:47, schrieb Bruno Wolff III:
> If you just lost one device from a raid 1 array, you should be able to boot your system normally and hot add the
> array. You don't to boot off a rescue image in that case

only if you are doing "grub2-install /dev/sda; grub2-install /dev/sdb" or whatever are
your drives because if not and the one disk with the bootloader dies you have not
a bootable system which perverts the goal of a raid-system

that's why you should always test if your setups are working like expected
in case of RAID1 /boot by remove one disk, look if it boots, resync raid
after connect the removed disk and then the same for the other one

in case of RAID10 setups i have on all 4 disks a /boot RAID1 and on every disk is grub
installed and this makes sure that it does not matter which disk dies which is hardly
important in case of remote systems

and if you refresh GRUB at any time with grub2-install also do not forget the other disks

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