From: we-love-all-spam@gmail.com   
      
   Wim Cossement wrote:   
      
   > I will try this as soon I have some more spare time. I'm also aware   
   > you need /boot mirrored in order to have a 'normal' copy of you kernel   
   > , but another option might be to split up the file system even more in   
   > perhaps a (small) mirrored root partition and putting /usr, /opt, /var   
   > and so on on a stripe, no?   
      
   If the root fs is on a raid0 (or raid10, or raid5) md array, you need   
   a separate boot fs. If you care about fault tolerance (raid0 seems to   
   imply you don't) you can have the boot fs on a raid1 array, provided   
   you use metadata format 1.0 (1.1 and 1.2 won't do). The boot loader   
   will read the kernel and initrd from one of the members of that array   
   without knowing that it's part of an md.   
      
   Because /usr and /opt are mainly read-only sub-trees, they are good   
   candidates for a raid5 array, /if/ you care about fault tolerance. Else,   
   you might as well put everything (except /home) on one raid0 array.   
      
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