[mythtv-users] Install Mythbuntu with RAID 1 (Software)

[Simon Hobson]

Raymond Wagner wrote:

>I expect he's talking about using software mirroring for his OS 
>disk, which would most easily be set up during installation.

But not in MythBuntu I think. When I setup my frontend with the newer 
version, I was "surprised" to find the installer doesn't even support 
LVM ! Luckily I'd left a spare partition when I did the previous 
setup.

Ziegaus Matthias wrote:

>Well, the setup i have are 2 x  1 TB Hdd.
>And i wanted to mirror 1 to the other.
>So i would end up having the OS and the recordings on the same hdds.
>I would use different partitions if that does work with RAID.

What I've got is a pair of mirrored partitions for my OS (and another 
small pair for a /boot volume), and then use the rest of the free 
space as separate storage group directories.

You can boot Linux from a mirrored array - but it can be fiddly to 
get working in the first place, especially if, like me, you are 
converting from something else. The trick is to tell you bootloader 
to read the initrd and kernel from one of the physical devices rather 
than the array. Once the kernel and initrd are loaded, then that 
combination should contain the software to handle the arrays. You 
also have to install the bootloader in the boot blocks of the second 
disk - otherwise you'll be stuck without a bootloader if the first 
disk fails.

-- 
Simon Hobson

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