On Tue, 2010-03-23 at 12:05 -0700, solarflow99 wrote:
> On Tue, Mar 23, 2010 at 11:35 AM, Benjamin Franz <[email protected]> wrote:

> > It will boot off a RAID1 /boot partition fine. Other RAID levels - no.

> how is that possible?  it can't even load the md module to be able to
> read it.  /boot always had to be on a type 83 partition

Because RAID1 is effectively just a linear duplication in which the boot
block is unaffected and the disk contains a valid filesystem (just that
there are two copies of it on the two disks). So it happens to work if
you're doing RAID1. I've personally always done RAID1 with simply a
second bootloader on the other disk. It might not always failover if
there is a horrible physical failure and a reboot happens, but I don't
necessarily want it to if the disk has died. If it dies while running,
and it's a cheapish SATA disk, the system will probably survive.

Jon.


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