Fwd: ISP driver and FreeBSD

Matthew Jacob mj at feral.com
Thu Dec 29 14:47:47 UTC 2011


On 12/29/2011 12:16 AM, Omer Faruk SEN wrote:
> Sorry for cross posting but i thinkt this is the right place not
> freebsd-questions.

Generally speaking these kinds of issues have to do with what LUNs your 
EMC is exporting and how FreeBSD configures drives.

FreeBSD isn't all that smart about using REPORT LUNS to find the correct 
luns to attach, so this likely means that the EMC is exporting, say, LUN 
10 as a real volume and LUN 0 as a stub, bogus lun. FreeBsD hits lun0, 
it fails to attach, so FreeBSD stops looking.

You either need to reconfigure the EMC to export something at lun0, or 
you can do this:

+ Find out what LUN the EMC is exporting for the data volume
+ Explicitly scan for it

You do the latter by finding the bus number for whichever isp you want 
to scan (using 'camcontrol devlist -v'), and then explicitly scan for 
it: camcontrol rescan N:0:M (where N == scbus number and M is the lun).



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