From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 20CC3C4363A for ; Mon, 26 Oct 2020 14:44:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E9BA322263 for ; Mon, 26 Oct 2020 14:44:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1781846AbgJZOoC (ORCPT ); Mon, 26 Oct 2020 10:44:02 -0400 Received: from etc.inittab.org ([51.254.149.154]:37398 "EHLO etc.inittab.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1781778AbgJZOoC (ORCPT ); Mon, 26 Oct 2020 10:44:02 -0400 Received: from var.inittab.org (249.171.116.91.static.reverse-mundo-r.com [91.116.171.249]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: smtp_auth_agi@correo-e.org) by etc.inittab.org (Postfix) with ESMTPSA id B3F73A10BA; Mon, 26 Oct 2020 15:43:59 +0100 (CET) Received: by var.inittab.org (Postfix, from userid 1000) id A5CBD404E9; Mon, 26 Oct 2020 15:43:58 +0100 (CET) Date: Mon, 26 Oct 2020 15:43:58 +0100 From: Alberto Gonzalez Iniesta To: Chuck Lever Cc: Bruce Fields , Linux NFS Mailing List , Miguel Rodriguez , Isaac Marco Blancas Subject: Re: Random IO errors on nfs clients running linux > 4.20 Message-ID: <20201026144358.GM74269@var.inittab.org> References: <20200429171527.GG2531021@var.inittab.org> <20200430173200.GE29491@fieldses.org> <20200909092900.GO189595@var.inittab.org> <20200909134727.GA3894@fieldses.org> <20201026134216.GK74269@var.inittab.org> <40FDCE82-5895-4184-BAB3-AC221326EB34@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <40FDCE82-5895-4184-BAB3-AC221326EB34@oracle.com> Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org On Mon, Oct 26, 2020 at 09:58:17AM -0400, Chuck Lever wrote: > >> So all I notice from this one is the readdir EIO came from call_decode. > >> I suspect that means it failed in the xdr decoding. Looks like xdr > >> decoding of the actual directory data (which is the complicated part) is > >> done later, so this means it failed decoding the header or verifier, > >> which is a little odd: > >> > >>> Sep 8 16:03:23 portatil264 kernel: [15033.016276] RPC: 3284 call_decode result -5 > >>> Sep 8 16:03:23 portatil264 kernel: [15033.016281] nfs41_sequence_process: Error 1 free the slot > >>> Sep 8 16:03:23 portatil264 kernel: [15033.016286] RPC: wake_up_first(00000000d3f50f4d "ForeChannel Slot table") > >>> Sep 8 16:03:23 portatil264 kernel: [15033.016288] nfs4_free_slot: slotid 0 highest_used_slotid 4294967295 > >>> Sep 8 16:03:23 portatil264 kernel: [15033.016290] RPC: 3284 return 0, status -5 > >>> Sep 8 16:03:23 portatil264 kernel: [15033.016291] RPC: 3284 release task > >>> Sep 8 16:03:23 portatil264 kernel: [15033.016295] RPC: freeing buffer of size 4144 at 00000000a3649daf > >>> Sep 8 16:03:23 portatil264 kernel: [15033.016298] RPC: 3284 release request 0000000079df89b2 > >>> Sep 8 16:03:23 portatil264 kernel: [15033.016300] RPC: wake_up_first(00000000c5ee49ee "xprt_backlog") > >>> Sep 8 16:03:23 portatil264 kernel: [15033.016302] RPC: rpc_release_client(00000000b930c343) > >>> Sep 8 16:03:23 portatil264 kernel: [15033.016304] RPC: 3284 freeing task > >>> Sep 8 16:03:23 portatil264 kernel: [15033.016309] _nfs4_proc_readdir: returns -5 > >>> Sep 8 16:03:23 portatil264 kernel: [15033.016318] NFS: readdir(departamentos/innovacion) returns -5 > > > > Hi, Bruce et al. > > > > Is there anything we can do to help debugging/fixing this? It's still > > biting our users with a +4.20.x kernel. > > Alberto, can you share a snippet of a raw network capture that shows > the READDIR Reply that fails to decode? Hi, Chuck. Thanks for your reply. We're using "sec=krb5p", which makes the network capture useless :-( I'm afraid it's quite difficult to disable that, since we have +200 NFS clients on production. -- Alberto González Iniesta | Universidad a Distancia alberto.gonzalez@udima.es | de Madrid