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From: Sharad Chandra <sharadc@in.niksun.com>
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To: Eric Anderson <anderson@freebsd.org>
Date: Fri, 5 Oct 2007 12:21:22 +0530
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X-Mailman-Approved-At: Fri, 05 Oct 2007 14:47:36 +0000
Cc: freebsd-hackers@freebsd.org
Subject: Re: SCSI and SAN
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Yes, right by analyzing camcontrol devlist it can be told, but i guess not 
always.

[root@qa7 ~]# camcontrol devlist
<IFT A16F-G2422 348C>              at scbus0 target 0 lun 0 (da0,pass0)
<IFT A16F-G2422 348C>              at scbus0 target 0 lun 1 (da1,pass1)
<IFT A16F-G2422 348C>              at scbus0 target 0 lun 2 (da2,pass2)
<IFT A16F-G2422 348C>              at scbus0 target 0 lun 3 (da3,pass3)

Here luns are increasing, so it is SAN confirmed by tool. Now my point is if i 
have a SAN of less than 1TB and i make only 1 LUN. what should be output?
guessing: similar to
<IFT A16F-G2422 348C>              at scbus0 target 0 lun 0 (da0,pass0)

Then it will be difficult to tell, whether it is regular SCSI drives or SAN. 
Then we need a tool that can tell this da0 belongs to SAN/SCSI or not

Thanks
Sharad Chandra

On Thursday 04 October 2007 6:51 pm, Eric Anderson wrote:
> Sharad Chandra wrote:
> > Hello,
> >
> > 	How to distinguish if /dev/da* devices are internal scsi drivers or LUNs
> > of external SAN?
>
> camcontrol devlist -v
>
> Might help you..
>
> Eric