From owner-freebsd-fs@FreeBSD.ORG Wed Sep 22 04:26:21 2010 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2CFAE106564A for ; Wed, 22 Sep 2010 04:26:21 +0000 (UTC) (envelope-from zbeeble@gmail.com) Received: from mail-gy0-f182.google.com (mail-gy0-f182.google.com [209.85.160.182]) by mx1.freebsd.org (Postfix) with ESMTP id DAC898FC14 for ; Wed, 22 Sep 2010 04:26:20 +0000 (UTC) Received: by gyg4 with SMTP id 4so43049gyg.13 for ; Tue, 21 Sep 2010 21:26:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=ot+oAZOZwQtsY/93O6PWhaLFFz9cZgbFcjvoPpeOmo4=; b=i6wvcJn9vTpjk2cSEyy0G8pcllY9QoagsTmc6lgjtFfrEK5VsY1xYX4mqzxiTSgcPI GZ2yCZ2o3ONzgxN9hjuqYcOzE3mEksbIxH75e+o9Vtzi8RC3mRgIaTK6lu9OCeBZYtI2 gRBzdAl4OtDcK5nIJvhkUHQJ1iHdGoqAT3jvs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; b=nK2j2KTk/hpBtRQeOcRnwE2EU8lH2QnsvPMU5NvrxH+6wiCxATf5dBN2jZ9k62Nenm o3uBat4mK27I/xsqSQJAMsGP+qHihRJMhpcfbbwF89ipIuAV9ycVCCuzkYDartkJybJI XA2vUu9CCWhceeWgV167BI7530blTMFxOpUxs= MIME-Version: 1.0 Received: by 10.150.216.7 with SMTP id o7mr385740ybg.199.1285129580034; Tue, 21 Sep 2010 21:26:20 -0700 (PDT) Received: by 10.151.39.7 with HTTP; Tue, 21 Sep 2010 21:26:20 -0700 (PDT) In-Reply-To: References: Date: Wed, 22 Sep 2010 00:26:20 -0400 Message-ID: From: Zaphod Beeblebrox To: Bob Friesenhahn Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: freebsd-fs Subject: Re: Oracle to deny deduplication? X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Sep 2010 04:26:21 -0000 On Tue, Sep 21, 2010 at 3:21 PM, Bob Friesenhahn wrote: > On Tue, 21 Sep 2010, Zaphod Beeblebrox wrote: >> >> Shortly thereafter I found a nice table (here: >> http://docs.sun.com/app/docs/doc/819-5461/appendixa-1?a=3Dview ) >> >> ... now notice that the official Oracle table lists version 21 of >> zpool as "Reserved" ... this worries me. =A0Is the solution to the >> lawsuit against Sun by NetApp (that Oracle settled) that Oracle burys >> deduplication? =A0This could be bad for people who unbury it. > > I think that this is just because Solaris 10 Update 9 is recently release= d > and deduplication is not considered robust enough for production use yet. > =A0You are looking at a Solaris 10 document. =A0The easy solution was to = simply > mask it out. =A0The deduplication code is likely still active in Solaris = 10 > Update 9 zfs, even if it can't be enabled by it. > > No worries ... Even if you are correct, I'm still quite wary of Oracle's support of ZFS. Oracle is not known as a "nice" entity. But how would that work --- if you update the pool to 23 (22 or 23 is the latest listed there?) then a filesystem with dedup would be read ... but you might not be able to set the attribute? Seems odd. The ZFS implementation of dedup seems so "sensible" ...