howto connect local raid to FC?

[Eric Anderson]

On 06/07/07 14:36, Arno J. Klaassen wrote:
> Hello,
> 
> sorry if this is an obvious question :
> 
> I have several servers with hard- or software diskarrays (3ware,
> gmirror, even some good old ccd).
> For years I use nfs/netatalk/samba to share them with other boxes
> (nowadays refered to as NAS if I understand correctly).
> 
> Now I would like to connect the local storage to a fibre
> channel network (SAN).
> I'm new to all this 'SAN'-stuff and before I buy an after
> all quite expensive FC-HBA, I would like to know if
> it is possible to 'export' e.g. /dev/da1, /dev/ccd0 etc.
> to the Fiber Channel interface?
> 
> I found the next citation in a recent email on MPSAFE CAM, which made
> me think this might not yet be possible, but is thought of for the
> near future (a la atapicam ?) :
> 
>   Future work
>   -----------
> 
>   The CAM API will likely undergo some more small changes to support
>   future work with newbus integration and SAS/SATA/FC transport
>   modularization.  These changes will hopefully be done before FreeBSD 7.0
>   is released. 
> 
> 
> Any idea, help, pointer, [cold shower,] is appreciated.


The cold shower is up to you, but you should look at target mode scsi 
(scsi=target, targ, and isp man pages) for hints on how to do it.  It's 
doable.


Eric