From owner-freebsd-stable@FreeBSD.ORG Wed May 20 22:41:09 2009 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BD41E106566B for ; Wed, 20 May 2009 22:41:09 +0000 (UTC) (envelope-from mat.macy@gmail.com) Received: from an-out-0708.google.com (an-out-0708.google.com [209.85.132.245]) by mx1.freebsd.org (Postfix) with ESMTP id 759C98FC12 for ; Wed, 20 May 2009 22:41:09 +0000 (UTC) (envelope-from mat.macy@gmail.com) Received: by an-out-0708.google.com with SMTP id c3so456100ana.13 for ; Wed, 20 May 2009 15:41:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:sender:received:in-reply-to :references:date:x-google-sender-auth:message-id:subject:from:to:cc :content-type:content-transfer-encoding; bh=Cj5Bh+acob1PDui5CgpiVw9s7Dk6t3YuFY8v6w/a9VE=; b=KWTb+OJULH5TtF0nK7gR/BDedFWUzSBeeLpOqBNtNPA8hQ8qO7VI3AXRhQ4FJo6q57 vrjOqFRNxWxRjh5AXNzeYwehjgN2/57Nl8McXOmyi6cS/WizWzosJxEum3E/ckRTlxht /BIUmI71g335itly+lQQnP1omWU3ZGzAfe5es= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=nsTg88azdZJxSvB4psO4lYORY8W4BNueviEKGnYv37p3qBIA8zGxRyCGFc8jOoJ4m/ OrGorciZhubd3QQwXLdeyzE5+Q7SvbuWk6Dr53dynExXrlFqxYOQUWbRweUR/Ig7wKef am4WEDVUeoVvU/NBwJJ+R8fY+WhW3oDzZKiao= MIME-Version: 1.0 Sender: mat.macy@gmail.com Received: by 10.100.107.3 with SMTP id f3mr3547035anc.119.1242859268517; Wed, 20 May 2009 15:41:08 -0700 (PDT) In-Reply-To: <200905202209.n4KM9Bcg094853@lava.sentex.ca> References: <3c1674c90905201459k19776d53n309b2abeab0f8d0a@mail.gmail.com> <200905202209.n4KM9Bcg094853@lava.sentex.ca> Date: Wed, 20 May 2009 15:41:08 -0700 X-Google-Sender-Auth: 2df85a0b164061f7 Message-ID: <3c1674c90905201541n65f997e6jaa20d93bf566fb98@mail.gmail.com> From: Kip Macy To: Mike Tancsa Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: freebsd-stable@freebsd.org Subject: Re: ZFS MFC heads up X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 May 2009 22:41:10 -0000 On Wed, May 20, 2009 at 3:11 PM, Mike Tancsa wrote: > At 05:59 PM 5/20/2009, Kip Macy wrote: >> >> If you choose to upgrade a pool to take advantage of new features you >> will no longer be able to use it with sources prior to today. 'zfs >> send/recv' is not expected to inter-operate between different pool >> versions. > > Hi, > =A0 =A0 =A0 =A0Thanks for working on ZFS! =A0 Is there a summary of the n= ew features > somewhere ? > > =A0 =A0 =A0 =A0---Mike > Primarily what was in Pawel's commit to HEAD (see below). The following changes have also been brought in: - the recurring deadlock was fixed by deferring vinactive to a dedicated th= read - zfs boot for all types now works - kmem now goes up to 512GB so arc is now limited by physmem - the arc now experiences backpressure from the vm (which can be too much - but allows ZFS to work without any tunables on amd64) Revision 185029 - (view) (annotate) - [select for diffs] Modified Mon Nov 17 20:49:29 2008 UTC (6 months ago) by pjd File length: 38244 byte(s) Diff to previous 177698 Update ZFS from version 6 to 13 and bring some FreeBSD-specific changes. This bring huge amount of changes, I'll enumerate only user-visible changes= : - Delegated Administration Allows regular users to perform ZFS operations, like file system creation, snapshot creation, etc. - L2ARC Level 2 cache for ZFS - allows to use additional disks for cache. Huge performance improvements mostly for random read of mostly static content. - slog Allow to use additional disks for ZFS Intent Log to speed up operations like fsync(2). - vfs.zfs.super_owner Allows regular users to perform privileged operations on files stored on ZFS file systems owned by him. Very careful with this one. - chflags(2) Not all the flags are supported. This still needs work. - ZFSBoot Support to boot off of ZFS pool. Not finished, AFAIK. Submitted by: dfr - Snapshot properties - New failure modes Before if write requested failed, system paniced. Now one can select from one of three failure modes: - panic - panic on write error - wait - wait for disk to reappear - continue - serve read requests if possible, block write requests - Refquota, refreservation properties Just quota and reservation properties, but don't count space consumed by children file systems, clones and snapshots. - Sparse volumes ZVOLs that don't reserve space in the pool. - External attributes Compatible with extattr(2). - NFSv4-ACLs Not sure about the status, might not be complete yet. Submitted by: trasz - Creation-time properties - Regression tests for zpool(8) command. Obtained from: OpenSolaris