From owner-freebsd-stable@FreeBSD.ORG Sun Nov 4 08:05:42 2012 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 578B3114 for ; Sun, 4 Nov 2012 08:05:42 +0000 (UTC) (envelope-from takeda@takeda.tk) Received: from chinatsu.takeda.tk (mail.takeda.tk [74.0.89.210]) by mx1.freebsd.org (Postfix) with ESMTP id EDD588FC0C for ; Sun, 4 Nov 2012 08:05:41 +0000 (UTC) Received: from [10.188.2.241] (5.sub-70-197-141.myvzw.com [70.197.141.5]) (authenticated bits=0) by chinatsu.takeda.tk (8.14.5/8.14.5) with ESMTP id qA4816Yi044789 (version=TLSv1/SSLv3 cipher=RC4-MD5 bits=128 verify=NO); Sun, 4 Nov 2012 01:01:07 -0700 (PDT) (envelope-from takeda@takeda.tk) User-Agent: K-9 Mail for Android In-Reply-To: <201211032130.PAA04484@lariat.net> References: <201211032130.PAA04484@lariat.net> MIME-Version: 1.0 Subject: Re: Why is SU+J undesirable on SSDs? From: Derek Kulinski Date: Sun, 04 Nov 2012 01:00:59 -0700 To: Brett Glass , stable@freebsd.org Message-ID: <6a2843fd-1574-440d-a3c5-83aeb106b854@email.android.com> X-Virus-Scanned: clamav-milter 0.97.6 at chinatsu.takeda.tk X-Virus-Status: Clean X-Bogosity: No, tests=bogofilter Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Content-Filtered-By: Mailman/MimeDel 2.1.14 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 04 Nov 2012 08:05:42 -0000 I personally let it be enabled during installation. I noticed that I was getting errors on fsck even after clean shutdown. After noticing it, I disabled it and the problems go away. Also, fsck works really fast so I don't see much advantage with SU+J. -- Sent from my phone. Please excuse my brevity. Brett Glass wrote: >Have been following the thread related to SU+J, and am wondering: why >is it >considered to be undesirable on SSDs (assuming that they have good wear >leveling)? I have been enabling it on systems with SSDs, hoping that >between >the lack of rotating media and the journaling I would have very robust >systems. > >--Brett Glass >_______________________________________________ >freebsd-stable@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-stable >To unsubscribe, send any mail to >"freebsd-stable-unsubscribe@freebsd.org"