can I change probe order of mpt controllers?
Scott Long
scottl at samsco.org
Fri May 25 15:22:44 UTC 2007
Vivek Khera wrote:
> I have a shiny new Sun X4100 here and it works pretty well (except that
> there is a bug in the ILOM bios that refuses to let the serial port
> console run at 115200!!!)
>
> I attached an external RAID array using an LSI fibre channel card, and
> now the boot disk is not found after the kernel boots. Ie, it can't
> find the root volume. This is because the fibre channel card is probed
> as mpt0 and the on-board disks are connected to mpt2. (Where's mpt1?
> no idea.) Once the RAID volume was initialized, the ordering of the
> disk device names changed.
>
> Is there some way to force the boot drive controller to be probed first
> and be mpt0? Or is there some way to force the boot drive to be a fixed
> device name?
>
> I'm planning to play with the RAID configuraitons and change partitions
> and add logical drives, etc., so this will be painful to reconfigure the
> OS every time I reconfigure the RAID. Any advice will be appreciated.
> Thanks!
>
> I'm running 6.2/amd64 from a fresh CD install.
>
Look in /sys/conf/NOTES for a long discussion on wiring SCSI device order.
Scott
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