From owner-freebsd-current@freebsd.org Wed Aug 22 01:09:40 2018 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 1841E1085AB0 for ; Wed, 22 Aug 2018 01:09:40 +0000 (UTC) (envelope-from gcr+freebsd-current@tharned.org) Received: from roadkill.tharned.org (tunnel294749-pt.tunnel.tserv9.chi1.ipv6.he.net [IPv6:2001:470:1f10:107f::2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "", Issuer "Tharned" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 8DF6077E0F for ; Wed, 22 Aug 2018 01:09:39 +0000 (UTC) (envelope-from gcr+freebsd-current@tharned.org) Received: from flake.tharned.org ([IPv6:2001:470:1f11:107f:54c6:f64c:9d8f:10af]) (authenticated bits=0) by roadkill.tharned.org (8.15.2/8.15.2) with ESMTPSA id w7M190IF093642 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 21 Aug 2018 20:09:37 -0500 (CDT) (envelope-from gcr+freebsd-current@tharned.org) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tharned.org; s=2017; t=1534900177; bh=PFzJhtTw4cdZQ3ria+I/LZPrFsOcQeG0ozrE+BGz+zc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=n8lNF5WoL7ypgzMozEbSjJTCgVbSiOH0DZs13KntojYZfTS3xcCOt84lQ0atXv2hy XGCEBeJcJkzMm9dtsvbbtftGKqHljLF0SInjWHlKNa+7mhMtikeS1icdwbZ3amlZA6 FsqgEtFvh5o//cXNx4slBXULuaA5/dR++KoRkS8TXus3a2guOqSCJBpHzWpf+rye/L YNtjbD/Cz6SLJhOLdLPEajcwJ3BaR8EoQdW4c00z7Q3XefIg+j7StChx+9PGZU+23g kR6jlsjNsAb0y/z5jDIFlRsBJcrELIOIgbtvmZeNtfQbpPWHUCI/B6f9T21A9khKPa h6cklNVBCMsLg== X-Authentication-Warning: roadkill.tharned.org: Host [IPv6:2001:470:1f11:107f:54c6:f64c:9d8f:10af] claimed to be flake.tharned.org From: Greg Rivers To: Bob Prohaska Cc: FreeBSD Current Subject: Re: CFT: TRIM Consolodation on UFS/FFS filesystems Date: Tue, 21 Aug 2018 20:09 -0500 Message-ID: <1659279.80fYreCAfO@no.place.like.home> User-Agent: KMail/4.14.10 (FreeBSD/11.1-RELEASE-p13; KDE/4.14.38; amd64; ; ) In-Reply-To: <20180822004843.GA84687@www.zefox.net> References: <201808201940.w7KJeu29072094@chez.mckusick.com> <20180822004843.GA84687@www.zefox.net> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.6.2 (roadkill.tharned.org [IPv6:2001:470:1f10:107f:0:0:0:2]); Tue, 21 Aug 2018 20:09:37 -0500 (CDT) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Aug 2018 01:09:40 -0000 On Tuesday, August 21, 2018 17:48:43 Bob Prohaska wrote: > Will the new feature be active on a Raspberry Pi 3 using flash > on microSD and USB for file systems and swap? > It will work on any UFS file system, as long as the underlying medium supports TRIM. It will not work for swap because swap is not UFS. > Can the feature be turned on using one of the conf files in /etc? > No, TRIM and other UFS features are controlled by parameters in the UFS superblock. See tunefs(8). -- Greg