From owner-freebsd-stable@FreeBSD.ORG Sat Nov 3 22:26:55 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 52A55E8C for ; Sat, 3 Nov 2012 22:26:55 +0000 (UTC) (envelope-from jroberson@jroberson.net) Received: from mail-pa0-f54.google.com (mail-pa0-f54.google.com [209.85.220.54]) by mx1.freebsd.org (Postfix) with ESMTP id 1DC038FC08 for ; Sat, 3 Nov 2012 22:26:54 +0000 (UTC) Received: by mail-pa0-f54.google.com with SMTP id bi1so3339809pad.13 for ; Sat, 03 Nov 2012 15:26:54 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=date:from:x-x-sender:to:cc:subject:in-reply-to:message-id :references:user-agent:mime-version:content-type:x-gm-message-state; bh=Tp6q9uK8CJekok5LHtS2zKbp3SEdCdANZPKTCLgNCyA=; b=nAeznwddnsGtdQx7LmgE9KLreTr1LL0fFXbJfXkn6dtCDIK17Mrl9xavALTVZfowtM TXiyXCrKJnk0JrUsDSNUUq5QBz5ueEKkYQEwiU0al2+iJpe74EH56M77UDLEixbLs8on UtF7nY/rhX0/EnZoIV76LKwyt10ghFectEGUFizHSdy/Ote2wx5QQ/ozbcqdAhTAdpD/ jJa9PTwUXL3TLGdBMllMJFuWD2irtdEe4Grh2JdJbg1+/5BHL4KPDDpVrtTC2iGOziXJ pZ8vmgUUCoXJ6g3T1p3B+thYoyCMeJ5lCiPkzmVihcfL4QbhIciNhBK+4s5AMJOKkm22 SB7g== Received: by 10.68.232.163 with SMTP id tp3mr18340173pbc.44.1351981614502; Sat, 03 Nov 2012 15:26:54 -0700 (PDT) Received: from rrcs-66-91-135-210.west.biz.rr.com (rrcs-66-91-135-210.west.biz.rr.com. [66.91.135.210]) by mx.google.com with ESMTPS id ix9sm7956601pbc.7.2012.11.03.15.26.53 (version=SSLv3 cipher=OTHER); Sat, 03 Nov 2012 15:26:53 -0700 (PDT) Date: Sat, 3 Nov 2012 12:25:30 -1000 (HST) From: Jeff Roberson X-X-Sender: jroberson@desktop To: Brett Glass Subject: Re: Why is SU+J undesirable on SSDs? In-Reply-To: <201211032130.PAA04484@lariat.net> Message-ID: References: <201211032130.PAA04484@lariat.net> User-Agent: Alpine 2.00 (BSF 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Gm-Message-State: ALoCoQlXezvyYhRJaHXZkw9M0EiPkrWAcT2zU7uCO9Wy41rfUnzJpYRVHo0Tzd05vP/WGIlBXsDq Cc: stable@freebsd.org 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: Sat, 03 Nov 2012 22:26:55 -0000 On Sat, 3 Nov 2012, 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. I know of no reason to support this notion. Although SSDs are so fast you might be happy to wait for the fsck time in exchange for snapshots. Jeff > > --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" >