Date: Mon, 24 Nov 1997 14:30:56 -0800 From: Julian Elischer <julian@whistle.com> To: Robert Du Gaue <rdugaue@calweb.com> Cc: questions@freebsd.org Subject: Re: Max logical/LUN support question Message-ID: <347A0020.2F1CF0FB@whistle.com> References: <Pine.BSF.3.95q.971124132514.3559A-100000@web1.calweb.com>
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The file /sys/scsi/scsiconf.c deliberatly disables multiple LUNs for many devices because so many return bogus results on unused LUNs. Edit the table there to allow the disk (sd) driver to check for more LUNs. There should be examples of this in the table, for the CD changers. Robert Du Gaue wrote > > I recently picked up a SCSI-to-SCSI RAID. So far I'm impressed with this > solution and speed. However, right now I have one big logical 13GIG drive. > When I tried breaking this down into reasonable sizes I ran out of > allowable device names. Trying to make additional devices (IE MAKEDEV > sd0s1i) doesn't seem allowable (wipes out all the other sds1x devices > too). So Instead, the RAID system has the ability to separate out logical > devices into mulitple LUNs. Doing this however, doesn't work as it looks > like FreeBSD doesn't support multiple LUNs as only LUN 0 shows up. > > I'd much perfer to make more devices instead of LUNs anyways. How do you > make more SCSI devices for a single physical drive then what is currently > a default of what appears to be 6? Or if that's not possible, is there a > multiple LUN support option I'm missing somewhere? My controller is a > 2940UW in case that matters. > > Thanks in advance! > > -------------------------------------------------------------------------- > Robert Du Gaue - rdugaue@calweb.com http://www.calweb.com > President, CalWeb Internet Services Inc. (916) 641-9320 > --------------------------------------------------------------------------
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