From owner-freebsd-current@FreeBSD.ORG Sun Oct 4 15:33:53 2009 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 36B18106568B for ; Sun, 4 Oct 2009 15:33:53 +0000 (UTC) (envelope-from arno@heho.snv.jussieu.fr) Received: from shiva.jussieu.fr (shiva.jussieu.fr [134.157.0.129]) by mx1.freebsd.org (Postfix) with ESMTP id A21F88FC36 for ; Sun, 4 Oct 2009 15:33:52 +0000 (UTC) Received: from heho.snv.jussieu.fr (heho.snv.jussieu.fr [134.157.184.22]) by shiva.jussieu.fr (8.14.3/jtpda-5.4) with ESMTP id n94FDP4D037655 ; Sun, 4 Oct 2009 17:13:25 +0200 (CEST) X-Ids: 164 Received: from heho.snv.jussieu.fr (localhost [127.0.0.1]) by heho.snv.jussieu.fr (8.14.3/8.14.3) with ESMTP id n94FDOCk082476; Sun, 4 Oct 2009 17:13:24 +0200 (CEST) (envelope-from arno@heho.snv.jussieu.fr) Received: (from arno@localhost) by heho.snv.jussieu.fr (8.14.3/8.14.3/Submit) id n94FDOUQ082473; Sun, 4 Oct 2009 17:13:24 +0200 (CEST) (envelope-from arno) To: Dmitry Marakasov From: "Arno J. Klaassen" References: <20090123221826.GB30982@deprived.panopticon> <20090126144044.GB6054@hades.panopticon> <20090127164617.GA93440@hades.panopticon> <20090128042148.GA1256@hades.panopticon> <20090814021340.GA1275@hades.panopticon> Date: Sun, 04 Oct 2009 17:13:23 +0200 In-Reply-To: <20090814021340.GA1275@hades.panopticon> (Dmitry Marakasov's message of "Fri\, 14 Aug 2009 06\:13\:40 +0400") Message-ID: User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.3 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Virus-Scanned: ClamAV 0.94.2/9866/Sat Oct 3 16:49:15 2009 on shiva.jussieu.fr X-Virus-Status: Clean X-Miltered: at jchkmail2.jussieu.fr with ID 4AC8BB95.001 by Joe's j-chkmail (http : // j-chkmail dot ensmp dot fr)! X-j-chkmail-Enveloppe: 4AC8BB95.001/134.157.184.22/heho.snv.jussieu.fr/heho.snv.jussieu.fr/ Cc: freebsd-current@freebsd.org Subject: Re: Data corruption with checksum offloading enabled 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: Sun, 04 Oct 2009 15:33:53 -0000 Hello, Dmitry Marakasov writes: > * Dmitry Marakasov (amdmi3@amdmi3.ru) wrote: > >> 3. 512MB random bytes with NFS: 2/5 correct > > Just for the record: this no longer seems to be a problem. Recent > 8-STABLE, ale works fine with rxcsum/txcsum, at least I could not > reproduce the problem with similar tests as before. bon, I upgraded the box with this problem to *7*-STABLE this weekend, and no luck, the problem still persists. To refresh memory, nfs-client has data corrupt in a particular way : - just one byte (per file) in my case, a single 128 byte block for Dimitry - independent of network driver and NFS-[options|client versions] - seems nfs-limited (netcat file transfers work OK (zero-only nfs as well)) - disabling checksum offloading at least makes it much harder to provoke (cann't remembre whether everyone confirmed this) - disabling cpufreq makes it impossible to provoke (at least for me) So far the bad news, the better news is that I cannot reproduce this problem on a similar setup running *8*-STABLE indeed. The 7-STABLE box is in production, but involved in some maintenaince/upgrade-shuffle I am responsable for, I will try to let it at least boot a 8-kernel and 7-world sometime next week and see if I can still reproduce the problem. Best, Arno