From owner-freebsd-hackers Mon Mar 3 02:21:06 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id CAA19639 for hackers-outgoing; Mon, 3 Mar 1997 02:21:06 -0800 (PST) Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id CAA19632 for ; Mon, 3 Mar 1997 02:21:03 -0800 (PST) Received: (from uucp@localhost) by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id LAA08569 for freebsd-hackers@freebsd.org; Mon, 3 Mar 1997 11:21:01 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.8.5/8.8.5) id LAA04755; Mon, 3 Mar 1997 11:17:41 +0100 (MET) Message-ID: Date: Mon, 3 Mar 1997 11:17:41 +0100 From: j@uriah.heep.sax.de (J Wunsch) To: freebsd-hackers@freebsd.org Subject: Re: scsi spindown References: <199703030708.RAA02623@genesis.atrad.adelaide.edu.au> X-Mailer: Mutt 0.55-PL10 Mime-Version: 1.0 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <199703030708.RAA02623@genesis.atrad.adelaide.edu.au>; from Michael Smith on Mar 3, 1997 17:38:55 +1030 Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk As Michael Smith wrote: > > Has anyone modified FreeBSD-anything to spindown scsi (direct) drives > > after some period of non-use? > A lot of disks will refuse to spin down. So you won't get this feature for these old suckers, what's the deal? > Better to configure your disks > to spin themselves down using scsi(8) if they support it. Where should this be supported? IDE drives do sometimes support this (though the standard is very very funky for this), but SCSI? I've never stumpled across a mode page setting that allows for an auto spindown. The `od' driver supports spindown while the device is being unused. Supporting spindown while the device is open will requires some restructuring of the code. -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)