Date: Fri, 4 Feb 2005 10:22:48 -0500 From: "Kevin A. Pieckiel" <pieckiel+freebsd-questions@sdf.lonestar.org> To: freebsd-questions@freebsd.org Subject: camcontrol cdb to disconnect drive Message-ID: <20050204152247.GA15942@SDF.LONESTAR.ORG>
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Hey, all. I want to replace a 9 GB SCSI drive with an 18 GB SCSI drive. All the hardware supports hot-swapping. Just for kicks, I thought I'd try to turn the drive off via SCSI commands and replace it without rebooting. The camcontrol utility doesn't have a disconnect command or a stop unit command (that I can find), so I was going to try to use 'camcontrol cdb' to send a stop unit command to the drive. Has anyone done anything similar? Can someone help me locate the necessary parameters to use for this command? All I can seem to find with Google is a quick reference for SCSI commands. It tells me the command to use is 1B, but I don't know what other details are needed to fill out the CDB command. I need to fill 6, 10, 12, or 16 bytes, and I only have the first. Help?
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