From owner-freebsd-current@FreeBSD.ORG Fri Sep 3 18:10:41 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7A7EF10656C9 for ; Fri, 3 Sep 2010 18:10:41 +0000 (UTC) (envelope-from jasonjwwilliams@gmail.com) Received: from mail-qy0-f175.google.com (mail-qy0-f175.google.com [209.85.216.175]) by mx1.freebsd.org (Postfix) with ESMTP id 283518FC18 for ; Fri, 3 Sep 2010 18:10:40 +0000 (UTC) Received: by qyk31 with SMTP id 31so280359qyk.13 for ; Fri, 03 Sep 2010 11:10:40 -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=z2GYLlDJwic5nz0D/nHq7kVyzT91eVAv/acTEqAprrs=; b=ffWVTbf/8ba+UAE9COwNtSQFQocxyRCBJi9eBEDNgNnLIn7jdLlM+KgJTYhNuusgK8 NwMI11VMBPxGlvUTrZjUBJRJVWqk3DaN2mliWMHJWGZ+trfgUJOTvR2Q+gqSGWnVFa2e 94RzyfWyQZKBLclfLlVUODRH1GousaZ+o1z/g= 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=T3fQ0tmek1LGH/NVJ9PuD3JqTkWUA0GW8VE9h/JVlsbeuegYdaN9MiU14mcraVYz47 S3/X0o6cllqUlPY8XAQ2EULfdbM9YELZaiIhdFBYt5ZLFoHTnEbrZcthOzGyrDDJTxxM jWw3GZ1LDTwGDFDiWNzeBC7agDGKCKIQlwUYw= MIME-Version: 1.0 Received: by 10.224.67.73 with SMTP id q9mr274546qai.25.1283537440292; Fri, 03 Sep 2010 11:10:40 -0700 (PDT) Received: by 10.224.60.82 with HTTP; Fri, 3 Sep 2010 11:10:40 -0700 (PDT) In-Reply-To: References: <20100903120758.58155gvs7me78e80@webmail.leidinger.net> Date: Fri, 3 Sep 2010 12:10:40 -0600 Message-ID: From: "Jason J. W. Williams" To: Olivier Smedts Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: Alexander Leidinger , freebsd-current@freebsd.org Subject: Re: ZFS Cache & Log Device Failure Handling X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Fri, 03 Sep 2010 18:10:41 -0000 Hi Olivier, Removal came around 18, but at least in OpenSolaris failure of the device (and it's replacement) were handled from day one of the dedicated ZIL feature. -J On Fri, Sep 3, 2010 at 6:18 AM, Olivier Smedts wrote: > 2010/9/3 Alexander Leidinger : >> Quoting "Jason J. W. Williams" (from Thu, 2 = Sep >> 2010 13:30:51 -0600): >> >>> How well does ZFS on FreeBSD handle a dying/wedged log and/or cache >>> device? OpenSolaris handles this pretty well in my experience and will >>> fail through relatively quickly. But this tends to rely on FMA. Thank >>> you in advance. >> >> No problem for the cache device. I have an USB memory stick as a cache >> device, and if I just remove it during operation, the system handles the >> situation. If you connect it again, you need to remove/readd it via zfs >> commands. > > I've got the same setup and just have to "online" the usb key after boot. > > As for the zil/log device, I think it should be supported in the > upcoming ZFS v28 patch (maybe you can give it a try, see pjd's mail) > because zil removal was introduced in a zpool version after v14/15 > (what's in 8-STABLE and 9-CURRENT). > >> >> I do not use a log device. >> >> Bye, >> Alexander. >> >> -- >> Govern a great nation as you would cook a small fish. =A0Don't overdo it= . >> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0-- Lao Tsu >> >> http://www.Leidinger.net =A0 =A0Alexander @ Leidinger.net: PGP ID =3D B0= 063FE7 >> http://www.FreeBSD.org =A0 =A0 =A0 netchild @ FreeBSD.org =A0: PGP ID = =3D 72077137 >> _______________________________________________ >> freebsd-current@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-current >> To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.or= g" >> > > > > -- > Olivier Smedts=A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0= =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=A0 _ > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 = =A0 =A0 ASCII ribbon campaign ( ) > e-mail: olivier@gid0.org=A0 =A0 =A0 =A0 - against HTML email & vCards=A0 = X > www: http://www.gid0.org=A0 =A0 - against proprietary attachments / \ > > =A0 "Il y a seulement 10 sortes de gens dans le monde : > =A0 ceux qui comprennent le binaire, > =A0 et ceux qui ne le comprennent pas." >