Ah, answering my own question. Upgrading to CentOS 4.5 actually clears this up. Also, someone e-mailed me saying the option should be "max_luns" instead of "max_scsi_luns", for anyone struggling with this in the future. Eric Solomon wrote: > This is one of those autoloaders where the tape drive and the library > share a SCSI ID, but are on different LUN's - specifically the library > should be on LUN 1. Apparently since so many devices like this are > broken, recent kernels don't probe beyond the first LUN, so it's not > detecting the library. > > My /proc/scsi/scsi output: > > Attached devices: > Host: scsi4 Channel: 01 Id: 00 Lun: 00 > Vendor: MegaRAID Model: LD 0 RAID1 70G Rev: 1L47 > Type: Direct-Access ANSI SCSI revision: 02 > Host: scsi5 Channel: 00 Id: 05 Lun: 00 > Vendor: HP Model: C5713A Rev: H910 > Type: Sequential-Access ANSI SCSI revision: 02 > > I read somewhere that this shouldn't be a problem with RHEL 4, but I > can't seem to get it detected. I tried to add > > options scsi_mod max_scsi_luns=6 > > to modprobe.conf and regenerated initrd - no change. Tried adding > > max_luns=6 max_report_luns=6 > > to the kernel line in grub.conf, no change. I tried to manually add > it by doing: > > echo "scsi add-single-device 0 0 5 1" > /proc/scsi/scsi > > but again, no change. > > Any suggestions? Am I on the right track and just doing something > wrong? I know recompiling the kernel is not the best thing, but not > sure what to do here. Thanks. > -- Eric Solomon Senior Unix Engineer Clickability ____________________________________ Simplifying Content Management 130 Battery Street, Suite 300 San Francisco CA 94111 Tel 415-575-5125 eric at clickability.com Fax 415-538-0839 http://www.clickability.com