From owner-freebsd-questions@freebsd.org Wed Oct 18 17:00:45 2017 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 71F39E3EA26 for ; Wed, 18 Oct 2017 17:00:45 +0000 (UTC) (envelope-from chris@vindaloo.com) Received: from yavin.vindaloo.com (yavin.vindaloo.com [173.199.117.73]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client CN "yavin.vindaloo.com", Issuer "Vindaloo Sign CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 2D79D1A3E for ; Wed, 18 Oct 2017 17:00:44 +0000 (UTC) (envelope-from chris@vindaloo.com) Received: from anza.vindaloo.com (ool-45714982.dyn.optonline.net [69.113.73.130]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (Client CN "smtp.vindaloo.com", Issuer "Vindaloo Sign CA" (verified OK)) by yavin.vindaloo.com (Postfix) with ESMTPS id CEAECD7AD0 for ; Wed, 18 Oct 2017 13:00:43 -0400 (EDT) Received: by anza.vindaloo.com (Postfix, from userid 1001) id 6B54D101F1; Wed, 18 Oct 2017 13:00:43 -0400 (EDT) Resent-From: Christopher Sean Hilton Resent-Date: Wed, 18 Oct 2017 13:00:43 -0400 Resent-Message-ID: <20171018170043.GA3455@anza.vindaloo.com> Resent-To: freebsd-questions@freebsd.org X-Original-To: chris@vindaloo.com Delivered-To: chris@vindaloo.com Received: by anza.vindaloo.com (Postfix, from userid 1001) id 8FB1C101F1; Wed, 18 Oct 2017 12:45:59 -0400 (EDT) Date: Wed, 18 Oct 2017 12:45:59 -0400 From: Christopher Sean Hilton To: freebsd-question@freebsd.org Subject: Md based tmpfs with zfs root system. Message-ID: <20171018164559.GA3267@anza.vindaloo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.7.1 (2016-10-04) X-Loop: mail.vindaloo.com X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 X-Vindaloo-List: X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Oct 2017 17:00:45 -0000 Good day, I've using a new system with root on zfs. I've traditionally used a /dev/md* based tmpfs for /tmp. A little initial reading on the subject shows an argument about this practice but I didn't find any threads that provide a resolution. Furthermore, all the information that I found which says that this is a bad idea dates from about FreeBSD-8.2, and that's long obsolete. What's the current resolution on this for a FreeBSD 11-STABLE user? Should I avoid using a swap backed /dev/md based tmpfs filesystem for /tmp? -- Chris __o "All I was trying to do was get home from work." _`\<,_ -Rosa Parks ___(*)/_(*)____.___o____..___..o...________ooO..._____________________ Christopher Sean Hilton [chris/at/vindaloo/dot/com]