Mpt raid 1 support?

[Geoff Buckingham]

Should the mpt driver support the disk mirroring present in some forms
of the controller? It seems to be similar to the ata mirroring in some
chipsets, it provides INT13 level access to the mirror for boot blocks,
but once the OS is running expects the driver to know about the mirror.

On an IBM x345 with this functionality I break any mirror as soon as I
boot FreeBSD. Could this be worked round with any of the ata mirror
tools?


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