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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 5020FC5DF60 for ; Tue, 5 Nov 2019 16:04:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 22A58214B2 for ; Tue, 5 Nov 2019 16:04:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="a5ogGAUi" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389944AbfKEQEF (ORCPT ); Tue, 5 Nov 2019 11:04:05 -0500 Received: from mail-yb1-f193.google.com ([209.85.219.193]:39765 "EHLO mail-yb1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389934AbfKEQEF (ORCPT ); Tue, 5 Nov 2019 11:04:05 -0500 Received: by mail-yb1-f193.google.com with SMTP id q18so9094483ybq.6 for ; Tue, 05 Nov 2019 08:04:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:subject:from:to:date:message-id:user-agent:mime-version :content-transfer-encoding; bh=tWsi3Ft18+lbsZPUGoUZ5CkTEseaAWdbgsy4Vs/P8Nk=; b=a5ogGAUivU2BqG8HbGuggPAoSn0YusPbiSdOTxY8deM8ZDPnhNZROUvpOqfTYMluVY hz0ZQX5sZOdpJySiLoA91wIUcL1iFOVqKrS6n+VQt0cfoIIxMpEzt/PkJ6Onxr2AqM5z ym9KU/mq76tOGVSg1KUpb+ea4X8WgsvG5Rh51YVq7vKgc4bgAi2i4QP76Za38NZONWpQ 2kGRvQDH0rfP5vkRfgoH54nbL4d8ODqrnJnRcso+ZXWpR3G2Ao55GHU+NsvIv1rKu7N4 gACDEVnRMRG/gKQT3Bf6XNKmUsFCLO5c7VLmx8i9tt5NVKtSNleCjKIWJ55gkuQFf7kU 9nqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:subject:from:to:date:message-id :user-agent:mime-version:content-transfer-encoding; bh=tWsi3Ft18+lbsZPUGoUZ5CkTEseaAWdbgsy4Vs/P8Nk=; b=BA5zvlLP6dq/WoOcFqLlvgoqO5MQbZDdWF5q0MbAxUjDcIOmlbFLz4roBEuBeWqD9v w3YmVmxxJ1uTOx6QTTdjqpVkPhrkBbBujyfeB41WUTFF2YiXuxRj38VRi2tLGuo53kcj optF0pIkI8Les16FqKLgw9Qfk7Anoq2FSq8fI8vD/ykcO+yiJJbFjP4GHoa0B9sgp9iI 53FNUH7D94XmTyBj5S7iNCKbTK0a3DR8uFgqZJDwEjl6wevrC5erOa5NCta3hCc6d000 54ea9hZ12NXK5XzIT5I+WR9obfuNHlVUHxHKPtQinw/6vxh085drMj/ay/RPom4dKsNi d0Lw== X-Gm-Message-State: APjAAAWUd8CQeseqU6FlOoUJqeVdsl4QdwLDJOuCb7rjGG1zifd+kNjF CLbJgMZDtxQpl7Yh5mPnJq02wVyAEkM= X-Google-Smtp-Source: APXvYqwkwBiW2lvKJtrvEFeW+6b6zQa6e3m0cjDU+bQYE3p8Wx5KVMtJFyhyN1e0CDzER0fmm3vedg== X-Received: by 2002:a25:4d09:: with SMTP id a9mr27720668ybb.131.1572969843887; Tue, 05 Nov 2019 08:04:03 -0800 (PST) Received: from gateway.1015granger.net (c-68-61-232-219.hsd1.mi.comcast.net. [68.61.232.219]) by smtp.gmail.com with ESMTPSA id x136sm9493803ywd.58.2019.11.05.08.04.03 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 05 Nov 2019 08:04:03 -0800 (PST) Received: from manet.1015granger.net (manet.1015granger.net [192.168.1.51]) by gateway.1015granger.net (8.14.7/8.14.7) with ESMTP id xA5G41tq016745 for ; Tue, 5 Nov 2019 16:04:02 GMT Subject: [PATCH RFC 0/2] NFSv4 state recovery observability From: Chuck Lever To: linux-nfs@vger.kernel.org Date: Tue, 05 Nov 2019 11:04:01 -0500 Message-ID: <20191105160208.26481.97809.stgit@manet.1015granger.net> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-nfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Add some trace points to the state manager to help track down common in-the-field failures. We see "Lock reclaim failed!" a lot during testing, for example, and want to enable our Q/A staff to capture the failure completely and quickly. --- Chuck Lever (2): NFS4: Trace state recovery operation NFS4: Trace lock reclaims fs/nfs/nfs4_fs.h | 2 - fs/nfs/nfs4state.c | 4 + fs/nfs/nfs4trace.h | 171 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 175 insertions(+), 2 deletions(-) -- Chuck Lever