Re: LVM on top of software raid5

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On Sat, 04 Dec 2004 21:10:01 -0600, Jeff Unruh wrote:
> I should have mentioned I boot off a Raid-1 array with Grub and manually
> update the 3rd disk's /boot ...
> 
> /dev/md0 (Raid 1) is 32 MB for /boot
> /dev/md1 (Raid 5) is 4 GB for /
> /dev/md2 (Raid 5 with LVM2 = /dev/vg0) is 366 GB for /home /usr /opt /var
> and /tmp
> 
> I am sure that set-up is debatable, but it has worked well thus far. 

You can make /dev/md0 a three-disk raid1 (instead of a two-disk).
Then you can dispense with the step of manually updating when you
change /boot.  Presumably writes to /boot are so rare that you don't
mind the penalty of triple-writing everything -- I don't.

-Steve

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