Sorry, should have said Dell Power Edge 1650. On Dec 10, 2005, at 3:28 PM, Tony Schreiner wrote: > What is the "sg" device? > > The reason I ask, is that I have a file server running CentOS 4.2 > on a Dell Precision 1650. Disks are attached via QLogic FC. I > backup to a Qualstar TLS-4222 tape changer, with AIT-2 tapes, which > is connected over an Adaptec 29160 Ultra 160 SCSI. The software I'm > using is Legato Networker version 7.1.2. I'm backing up a bit under > 1 TB a month with this. > > Quite frequently these days (meaning once a month or two), the > Networker software loses the ability to control the tape changer. > Mount, unmount commands just don't work any more. The only way I > can seem to fix it, is to use the Networker admin software to > remove the robot, and tape device, and then recreate it with the > Networker jbconfig command. > > The jbconfig command detects the Qualstar, and then detects /dev/ > sg3 as the tape device. Now Networker can use this device to move > tapes around in the robot, but not to read and write. So I have to > delete /dev/sg3 from the Networker configuration, and then add /dev/ > nst0. And then it works (for a while). > > So I'm wondering, why the software is setting me up with /dev/sg3 > instead of /dev/nst0; and is there anything I can do about it. > Bonus question if anyone else had a similar issue. > > Thanks, > Tony Schreiner > Boston College > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos