LSI supported mps(4) driver in stable/9 and stable/8

Jeremy Chadwick freebsd at
Mon Feb 13 11:49:43 UTC 2012

On Mon, Feb 13, 2012 at 12:11:30PM +0100, Johan Hendriks wrote:
> Ok so it is not the mps driver who does the naming but cam, and that
> also has changed on 9.0 Stable.
> Well i use gpart labels for the pool, so i can use the gpart labels
> to yank the right disk.
> But it would be nicer if there was some kind of logic in the
> numbering of the devices.

"Wire them down" in FreeBSD using loader.conf variables and this issue
will cease to be a problem.  Example is below, despite being for SATA
with AHCI -- really doesn't matter, just change the appropriate bits and
it should be fine for you.

# "Wire down" device names (ada[0-5]) to each individual port
# on the SATA/AHCI controller.  This ensures that if we reboot
# with a disk missing, the device names stay the same, and stay
# attached to the same SATA/AHCI controller.

| Jeremy Chadwick                                 jdc at |
| Parodius Networking            |
| UNIX Systems Administrator                 Mountain View, CA, US |
| Making life hard for others since 1977.             PGP 4BD6C0CB |

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