On Wed, 09 Jan 2008, Matthew Wilcox wrote: > On Wed, Jan 09, 2008 at 09:05:52AM -0600, James Bottomley wrote: > > On Tue, 2008-01-08 at 19:22 -0700, Matthew Wilcox wrote: > > > On Tue, Jan 08, 2008 at 04:55:46PM -0800, Vinay Venkataraghavan wrote: > > > > Is there a limit on the number of devices that SCSI supports. In other words, I have a QLogic HBA card, and I am connecting to a SAN which has 64 targets. > > > > > > I've personally had over five hundred LUNs. You shouldn't be hitting a > > > limit here. > > > > I believe the largest test that's been run was the old OSDL CGL > > workgroup ... they went up to 4096. > > > > However, LUN support depends on the driver and HBA parameters as well > > (some choose to have arbitrary limits). > > I was using a qlogic HBA for my tests, so I don't think this is the > problem -- although the original poster claims to have 64 targets, and I > had only one target with 128 luns (attached 4 times). > > -- > Intel are signing my paycheques ... these opinions are still mine > "Bill, look, we understand that you're interested in selling us this > operating system, but compare it to ours. We can't possibly take such > a retrograde step." Not sure what's going on as well, perhaps some logs could help... But the inbox qla2xxx driver in RHEL4 set's an HBA's scsi_host->max_id count to 512 (also verified with several test rings), so there shouldn't be a problem handling 64 distinct targets (FC ports). - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
