Date: Wed, 28 Jun 2006 22:42:40 +0100 From: Scott Mitchell <scott+lists.freebsd@fishballoon.org> To: freebsd-questions@freebsd.org Subject: Spinning down a USB drive? Message-ID: <20060628214238.GA3341@llama.fishballoon.org>
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Hi all, Does anyone know of any way to ask a USB-attached drive to spin down (or better yet some way to have it happen automatically after an idle timeout)? I've tried "camcontrol stop" but it doesn't like that: (511) llama:~ $ sudo camcontrol stop 1:0:0 -v Error received from stop unit command (pass0:umass-sim0:0:0:0): STOP START UNIT. CDB: 1b 0 0 0 0 0 (pass0:umass-sim0:0:0:0): CAM Status: SCSI Status Error (pass0:umass-sim0:0:0:0): SCSI Status: Check Condition (pass0:umass-sim0:0:0:0): ILLEGAL REQUEST asc:24,0 (pass0:umass-sim0:0:0:0): Invalid field in CDB The drive is just a regular Seagate PATA drive in an external enclosure that can be connected over FireWire or USB. I've had it running over FW for a couple of years quite happily; "camcontrol stop" would make it spin down and "camcontrol start" spin it back up again when connected this way. Unfortunately the FW interface on either the drive or the machine has died so I've had to switch over to USB. The drive is only used for a couple of hours daily for backups - I'd like to keep it spun down the rest of the time simply because it gets pretty hot even when idle, and to save a bit of power. The USB-ATA adapter shows up like this: (515) llama:~ $ usbdevs -v Controller /dev/usb0: addr 1: full speed, self powered, config 1, UHCI root hub(0x0000), VIA(0x0000), rev 1.00 port 1 addr 2: full speed, self powered, config 1, USB TO IDE(0x0702), Genesys Logic(0x05e3), rev 0.02 [...] It's using USB 1.1 right now because the machine is running 5.4 where USB 2.0 wasn't enabled by default in GENERIC (and I didn't think I needed it). I can post dmesg and other info as necessary. Many thanks in advance, Scott -- =========================================================================== Scott Mitchell | PGP Key ID | "Eagles may soar, but weasels Cambridge, England | 0x54B171B9 | don't get sucked into jet engines" scott at fishballoon.org | 0xAA775B8B | -- Anon
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