From: Eric J Date: Thu, 18 Feb 2016 12:59:28 +0000 (+0100) Subject: Re: Lost updates to Notmuch database X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=fabe5df74d82d6178b20e1ec4a4d7396eaa17d90;p=notmuch-archives.git Re: Lost updates to Notmuch database --- diff --git a/a8/e24e27d6774c0858ae7f7e5d747f6e9d03acbe b/a8/e24e27d6774c0858ae7f7e5d747f6e9d03acbe new file mode 100644 index 000000000..94e01ef1b --- /dev/null +++ b/a8/e24e27d6774c0858ae7f7e5d747f6e9d03acbe @@ -0,0 +1,129 @@ +Return-Path: +X-Original-To: notmuch@notmuchmail.org +Delivered-To: notmuch@notmuchmail.org +Received: from localhost (localhost [127.0.0.1]) + by arlo.cworth.org (Postfix) with ESMTP id 5A9946DE020D + for ; Thu, 18 Feb 2016 14:12:56 -0800 (PST) +X-Virus-Scanned: Debian amavisd-new at cworth.org +X-Spam-Flag: NO +X-Spam-Score: 0.093 +X-Spam-Level: +X-Spam-Status: No, score=0.093 tagged_above=-999 required=5 tests=[AWL=0.003, + DKIM_SIGNED=0.1, RCVD_IN_DNSWL_NONE=-0.0001, + RCVD_IN_MSPIKE_H3=-0.01, + RCVD_IN_MSPIKE_WL=-0.01, T_DKIM_INVALID=0.01] autolearn=disabled +Received: from arlo.cworth.org ([127.0.0.1]) + by localhost (arlo.cworth.org [127.0.0.1]) (amavisd-new, port 10024) + with ESMTP id mKIk1ItGPdjX for ; + Thu, 18 Feb 2016 14:12:54 -0800 (PST) +Received: from mx1.solardns.com (mx1.solardns.com [109.73.127.119]) + by arlo.cworth.org (Postfix) with ESMTPS id 0A5E56DE01D0 + for ; Thu, 18 Feb 2016 14:12:54 -0800 (PST) +Received: from [213.129.84.218] (helo=luna.solardns.com) + by mx1.solardns.com with esmtps (TLSv1.2:DHE-RSA-AES256-SHA:256) + (Exim 4.85) (envelope-from ) id 1aWOB9-000244-1E + for notmuch@notmuchmail.org; Thu, 18 Feb 2016 12:59:33 +0000 +DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=deptj.eu; + s=default; h=Date:Message-ID:References:In-Reply-To:To:Subject:From; + bh=pOlqG3WJAPxDCGA86tc5ggLlSny+hZzn75sd54nBvns=; b=blRaHY+xXPlT9rYHZPfstcfss5 + sznAj8C5xIGlrpFsD5/RRA/9qz0yNvEaocuk9pbefTay5QZXXeeZgmAXbxHMORopL8kI8D8n0pBvH + L47PNpj3VqtJjHV9zub7e3zv3DCp5/oGbnFK4Q3B98CSzUaTW1ZKyFI+Zw5SSxKBrUmI=; +Received: from [92.135.160.170] (port=45007 helo=bruno.deptj.eu) + by luna.solardns.com with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) + (Exim 4.86) (envelope-from ) id 1aWOB7-00231G-4u + for notmuch@notmuchmail.org; Thu, 18 Feb 2016 12:59:29 +0000 +Received: from eric by bruno.deptj.eu with local (Exim 4.84) + (envelope-from ) id 1aWOB5-0005eU-Vb + for notmuch@notmuchmail.org; Thu, 18 Feb 2016 13:59:28 +0100 +From: Eric J +Subject: Re: Lost updates to Notmuch database +To: notmuch@notmuchmail.org +In-Reply-To: <871t8avnhq.fsf@zancas.localnet> +References: <337393ce5e2484d64f837a44b2c4f2ea32f91295-NM@bruno.deptj.eu> + <871t8avnhq.fsf@zancas.localnet> +Message-ID: +Date: Thu, 18 Feb 2016 13:59:28 +0100 (CET) +X-AuthUser: deptjeu +X-Filter-ID: + s0sct1PQhAABKnZB5plbIZxxbsbMXbbOVqDrOlLQDPCKLoLP9dSDpksiPa3sfcfQiw3bi2TEXpBy + KOgMDJLxZ2gLr13hkJnqYlE8dI2PqoFC/lGsrXcsS0xY0J18f6o7xB66CWvXcfKDfXjTU++u6/cO + QQommvORTE20Rks847c6row+/zX/W00wt70Tbqz7ZuM7jUXIESohoO51xWmU8U0XxLGz4gGrl7np + YUMMsx7Zx6js8RMGZ+eyCM03IideZE/8G6RrW+hPYRmHOym9VEp4OmAp9SwcFw57ijAOXur1H/aA + warQpYDOYx/6JtUOKIpz/KyJk6xidDbrtJGeIvwS+mRNB2u5eXMTyiRDCl4blv/7/GYDGL6pBAPx + 3RhxuHrpSpJU4PQlqFj9797wgsGhIeDBws4kvu4hgViYIJSOH7FelTFEA57OugCjQqJvq5XDlSi1 + S/CAqp6x6giLUpAadaOpLL7vzAlHz9Vt0lJbH3q7FSJEAvmcpRDg+DcXMCx8qKfWo/2nfeswSb/v + XOidX4Ts4xdG+C13IyWeZaJClvAWyUAUCSYHhmge3quet8geXjZWRvaT/RbJ/nX/IFFm7SbdEzck + 901Ob2Iq9tC/Vh1lis0iI/S1HLwoHXf0 +X-Report-Abuse-To: spam@mx1.solardns.com +X-Filter-Fingerprint: + IFrWXGses7OKB5S5G8/dJdIz5bb8V0ykx8BnFBnunHBA3cTUQ1R++keuE7RDJ8Kg3RbMLUalw1oC + mj99/u+Poh38tEMU4IgC4sNz49qn3HHnhRv/ZJ3kEy8bfiAr+Fb/UpndEJ0YoaLytXXo8BMTaVt0 + ARHRi6XGuAluI1udprGClI6bm+u9ssQgM5AHe3Zacv4uJct5wtJvPpZ2dlBHCwDSxr3Vz+LJ/RhM + 2JZ0ECN5dnq47RWft7iCyM9+PbHelB4qP9S6mTzNwoPraFy6ieiDqMHb2a0eZvGOvr7RaxKWGCKO + us9nABr0Pk/4CplP +X-Originating-IP: 213.129.84.218 +X-SpamExperts-Domain: out.solardns.com +X-SpamExperts-Username: 213.129.84.218 +Authentication-Results: solardns.com; + auth=pass smtp.auth=213.129.84.218@out.solardns.com +X-SpamExperts-Outgoing-Class: ham +X-SpamExperts-Outgoing-Evidence: Combined (0.28) +X-Recommended-Action: accept +X-BeenThere: notmuch@notmuchmail.org +X-Mailman-Version: 2.1.20 +Precedence: list +List-Id: "Use and development of the notmuch mail system." + +List-Unsubscribe: , + +List-Archive: +List-Post: +List-Help: +List-Subscribe: , + +X-List-Received-Date: Thu, 18 Feb 2016 22:12:56 -0000 + +On Wed, 17 Feb 2016 21:03:13 -0400, David Bremner wrote: +> Eric J writes: +> +> > However, if I do it twice, in different processes, at the same time, one +> > file is added and tagged properly, the other is not (totally unfindable +> > by notmuch search). Neither process reports any error, and they both log +> > their actions normally. Actually a third simultaneous process also fails +> > to leave any result in the database. +> +> It should be impossible for more than one process to open a Xapian +> database for writing at the same time. So if the processes are really +> running in parallel, you should be getting error codes from the later +> calls to notmuch_database_open{_verbose}. You claim that's not +> happening, which is puzzling. Maybe you can try to duplicate your +> problem with a tiny C program. + +Thanks David. Impossible? - yes, but if I do just the open in two +interactive sessions (the Tcl interface makes this easy), I get the +following from "lsof flintlock": + +COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME +cat 21408 eric 5w REG 8,9 0 667773 flintlock +cat 21418 eric 5w REG 8,9 0 667773 flintlock + +So, open for writing, but not locked (the processes have the right +parents). + +I managed to catch a run of "notmuch new" with "lsof -r5 flintlock": + +COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME +cat 20763 eric 3ww REG 8,9 0 667773 flintlock + +which is open for writing and (partially) locked, so it must be doing +something that I'm not. I obviously need to go carefully through the +code to see what that is (and experiment in C if I can't find it!). + +I don't have the _verbose functions BTW, still on 0.18.1 - I thought I +would get a proof-of-concept before upgrading notmuch, but... + +Thanks again, + +Eric +-- +ms fnd in a lbry