how to find out the boot device

[Brooks Davis]

On Fri, Aug 26, 2005 at 10:41:47PM +0200, Jan Pechanec wrote:
> 
> 	hello guys,
> 
> 	during the rc.d phase, I need to find out in a shell script from 
> which disk the system has booted up.
> 
> 	- I cannot use kern.rootdev because my root fs is a memory disk
> 	- I cannot use kern.disks because the first disk there doesn't 
> necessarily mean the boot disk (eg. my home box says 'cd0 ad0' for that)
> 	
> 	- I could use 'atacontrol list' or 'camcontrol devlist' because I 
> always boot from the 1st disk, but if I have both types of disks then I have 
> 1st ATA disk and 1st SCSI disk and again unable to recognize which one is 
> the one I need.
> 
> 	any ideas, please?

Use glabel and label the disk or file systems during deployment.  Then
you'll have /dev/label/<disk label> or /dev/ufs/<label> entries.  Once
that's done, it won't matter where the drive moves or what kind of bus
you use.

-- Brooks

-- 
Any statement of the form "X is the one, true Y" is FALSE.
PGP fingerprint 655D 519C 26A7 82E7 2529  9BF0 5D8E 8BE9 F238 1AD4
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