From owner-freebsd-fs@FreeBSD.ORG Thu May 21 11:07:32 2015 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id C20C8DA4; Thu, 21 May 2015 11:07:32 +0000 (UTC) Received: from mail-wi0-x22b.google.com (mail-wi0-x22b.google.com [IPv6:2a00:1450:400c:c05::22b]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4F86C1AF8; Thu, 21 May 2015 11:07:32 +0000 (UTC) Received: by wizk4 with SMTP id k4so10621178wiz.1; Thu, 21 May 2015 04:07:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=OUe2uac6aVgrKI/xGrXJzTJ6KnbFlXBD8kByNq3gXbQ=; b=lX22Yiu7aV7YueNU6OlgPnr9rK6fXDv6UUJ01tcHiVRS/AV8CDaR8Y5LmBd6rSzxQ+ u/KyuASq4l61iyV+j6eVWt5+XUuIh690ARoAY9TuSD63JtuaiiwC7BumNVMgFXqeV4GT /szAsacfRBHo8bZ3Oc5OLRSmzdX/cLFo44SgfvgXUYf1KNUM9Slu8ajLyrtn8FeZE8Nq JCj8rDVlDCBVpG6N8eoplrN2oaP1yOF0gBgXc2ZIXMOWvGjsPfZFQEuWVCv5eDpmRYH3 SM/ZAkoRSFMYshX+O79Q760JvOzMhXaaOFvD5WrxlGEA0fTKHtPZohOYBL6bwg0d6YOs YRaA== MIME-Version: 1.0 X-Received: by 10.180.101.138 with SMTP id fg10mr5238792wib.46.1432206450700; Thu, 21 May 2015 04:07:30 -0700 (PDT) Received: by 10.28.30.22 with HTTP; Thu, 21 May 2015 04:07:30 -0700 (PDT) In-Reply-To: References: Date: Thu, 21 May 2015 14:07:30 +0300 Message-ID: Subject: Re: L2ARC degraded. Checksum errors, I/O errors From: George Kontostanos To: =?UTF-8?Q?Karli_Sj=C3=B6berg?= Cc: "freebsd-fs@freebsd.org" , freebsd-stable Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 May 2015 11:07:32 -0000 On Wed, May 20, 2015 at 11:16 PM, Karli Sj=C3=B6berg wrote: > > Den 20 maj 2015 9:40 em skrev George Kontostanos = : > > > > > > > > On Wed, May 20, 2015 at 9:53 PM, Karli Sj=C3=B6berg > wrote: > >> > >> > >> Den 20 maj 2015 7:50 em skrev Slawa Olhovchenkov : > >> > > >> > On Wed, May 20, 2015 at 07:17:44PM +0300, George Kontostanos wrote: > >> > > >> > > Hello, > >> > > > >> > > Appologies if that has been asked before. I was wondering if the > following > >> > > bug has been addressed so far: > >> > > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D198242 > >> > > >> > As I know > >> > > >> > kstat.zfs.misc.arcstats.l2_cksum_bad: 14495 > >> > kstat.zfs.misc.arcstats.l2_io_error: 12877 > >> > > >> > caused by hardware failure on L2ARC device. > >> > try replace it. > >> > >> Hardly. We are seeing this phenomenon on all of your ZFS stora hela, > where some of the L2ARC's are new, so I'd be very surprised if these are > real hardware failures. That, as well as being reported by so many, my vo= te > is on bug. > >> > >> @gkontos > >> Thanks for bringing this to attention, I'm also interested in hearing > if anyone's working on this. > >> > >> /K > > > > > > Thanks, I am ignoring the previous comment as it makes no real sense. > > Whoops! > > 's/your ZFS storage's/our ZFS storage's/' :) > > /K > > That too :) But I was referring to the comment made by @slw --=20 George Kontostanos ---