From owner-freebsd-questions@freebsd.org Wed Oct 21 13:44:25 2015 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D4BB4A1B00B for ; Wed, 21 Oct 2015 13:44:25 +0000 (UTC) (envelope-from brandon.wandersee@gmail.com) Received: from mail-ig0-f171.google.com (mail-ig0-f171.google.com [209.85.213.171]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id A9C421C51 for ; Wed, 21 Oct 2015 13:44:25 +0000 (UTC) (envelope-from brandon.wandersee@gmail.com) Received: by igbkq10 with SMTP id kq10so94306569igb.0 for ; Wed, 21 Oct 2015 06:44:19 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=references:from:to:cc:subject:in-reply-to:date:message-id :mime-version:content-type; bh=JiJsE4geY7KTihDXeexvE0ZHRpT1JriyLspWFqzb8as=; b=DtYQqGfWtdIgRoRO0jXrJvMuiG9t8umZ+8t1a8uFU7f+sieN2FT7DUE5B/5kx3ZdeB kzpackX9S9CYhbuDyui3J8aZAdjGpySfWiNYXxKYFvTfopOTz4f6+yRI5HwB+aCg5ubZ 93DTzjR4lEyla3pblmQ5OjO1ybJckx+/0jOmN4J4FSQo0K3AMhD1uw0BS7e9gaWByiHW +UBzcW1Lgt1DXWfneJu5I04SEaMeqWn5UBQNKwRf8gPJ3ycjkl9/jgzozEnIGPPeb4FC X6b5XmNx2aI+MSWc0dFPwqDoDwjQ+W1E449EUiCLEglmQNA53gxnbOdwuwbOR9Lg5ePW tqyw== X-Received: by 10.50.60.37 with SMTP id e5mr18230161igr.46.1445435058917; Wed, 21 Oct 2015 06:44:18 -0700 (PDT) Received: from WorkBox.Home.gmail.com (63-231-132-20.mpls.qwest.net. [63.231.132.20]) by smtp.gmail.com with ESMTPSA id mh8sm3660725igb.3.2015.10.21.06.44.17 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 21 Oct 2015 06:44:18 -0700 (PDT) References: <867fmh12nq.fsf@WorkBox.Home> From: Brandon J. Wandersee To: krad Cc: FreeBSD Questions Subject: Re: gjournal and TRIM: A safe combination? In-reply-to: Date: Wed, 21 Oct 2015 08:44:17 -0500 Message-ID: <86pp081glq.fsf@WorkBox.Home> MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Oct 2015 13:44:25 -0000 krad writes: > I thought SU+J was the preferred method these days, not gjournal. I quite > out of touch with ufs these days though. > I thought the opposite, myself. `gjournal` has its own section in the Handbook, while SU+J isn't even mentioned. I also thought there was something fundamentally different about them--like SU+J simply maintains filesystem integrity, while gjournal actually protects files from the write hole as well as protecting the filesystem. I could be wrong. -- ================================================================= :: Brandon Wandersee :: :: brandon.wandersee@gmail.com :: ================================================================== 'A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools.' - Douglas Adams ==================================================================