From owner-freebsd-hackers Mon Feb 26 8:51:21 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from k9.rose.nu (adsl-63-196-10-163.dsl.snfc21.pacbell.net [63.196.10.163]) by hub.freebsd.org (Postfix) with ESMTP id E514137B503 for ; Mon, 26 Feb 2001 08:51:18 -0800 (PST) (envelope-from rose@rose.nu) Received: from localhost (rose@localhost) by k9.rose.nu (8.9.2/8.9.2) with ESMTP id IAA64603; Mon, 26 Feb 2001 08:50:08 -0800 (PST) (envelope-from rose@k9.rose.nu) Date: Mon, 26 Feb 2001 08:50:08 -0800 (PST) From: Stephen Rose To: Soren Schmidt Cc: freebsd-hackers@FreeBSD.ORG, Joe Gleason Subject: Re: ata-disk ioctl and atactl patch Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG A couple of us on the questions list have asked for a way to spin down ide disks when idle. Is there any chance that this utility could lead to something useful there? Steve Rose It seems Scott Renfro wrote: > As I promised on -mobile earlier this week, I've cleaned up my patches > to port the {Net,Open}BSD atactl utility, including a simplistic > ata-disk ioctl. They apply cleanly against this afternoon's -stable > (including Soren's latest commit bringing -stable up to date with > -current). I've been running them for some time and they ''work great > here''. > > Before announcing this in a broader context, I wanted to get a bit of > feedback on the ioctl implementation. In particular, is it safe to > just do an ata_command inside adioctl() without any further checking? > (e.g., can this cause bad things to happen under heavy i/o load?) No its not safe at all, you risk trashing an already running command... Anyhow, I have an atacontrol thingy in the works for attach/detach, raid control etc, etc, I'll try to merge this functionality into that (the ioctl's will change etc, but the functionality is nice)... -S?ren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message --- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message