From owner-freebsd-hackers@FreeBSD.ORG Sat Jan 12 18:10:30 2013 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 6CF6C4FB for ; Sat, 12 Jan 2013 18:10:30 +0000 (UTC) (envelope-from wblock@wonkity.com) Received: from wonkity.com (wonkity.com [67.158.26.137]) by mx1.freebsd.org (Postfix) with ESMTP id 2F5C527E for ; Sat, 12 Jan 2013 18:10:30 +0000 (UTC) Received: from wonkity.com (localhost [127.0.0.1]) by wonkity.com (8.14.6/8.14.6) with ESMTP id r0CIAThO008498; Sat, 12 Jan 2013 11:10:29 -0700 (MST) (envelope-from wblock@wonkity.com) Received: from localhost (wblock@localhost) by wonkity.com (8.14.6/8.14.6/Submit) with ESMTP id r0CIATYN008495; Sat, 12 Jan 2013 11:10:29 -0700 (MST) (envelope-from wblock@wonkity.com) Date: Sat, 12 Jan 2013 11:10:29 -0700 (MST) From: Warren Block To: Christian Gusenbauer Subject: Re: SATA disk disappears In-Reply-To: Message-ID: References: <201301120925.55068.c47g@gmx.at> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7 (wonkity.com [127.0.0.1]); Sat, 12 Jan 2013 11:10:29 -0700 (MST) Cc: freebsd-hackers@freebsd.org, Wojciech Puchar X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Jan 2013 18:10:30 -0000 On Sat, 12 Jan 2013, Warren Block wrote: > Hmm. The green drives are supposed to go to sleep for power saving, and then > there's a multiple-second delay when they have to spin back up on access. > That should not be a problem for gmirror, but maybe it is. sysutils/ataidle > can turn on the spindown. Some drives do not accept that command, or claim > to accept it but ignore it. Worth a try, though. Make that: sysutils/ataidle can turn *off* the spindown.