From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from localhost (localhost [127.0.0.1]) by olra.theworths.org (Postfix) with ESMTP id 5DCDA431FBD for ; Wed, 16 Jul 2014 15:36:45 -0700 (PDT) X-Virus-Scanned: Debian amavisd-new at olra.theworths.org X-Spam-Flag: NO X-Spam-Score: 0 X-Spam-Level: X-Spam-Status: No, score=0 tagged_above=-999 required=5 tests=[none] autolearn=disabled Received: from olra.theworths.org ([127.0.0.1]) by localhost (olra.theworths.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 82E3RiFPkvjV for ; Wed, 16 Jul 2014 15:36:40 -0700 (PDT) Received: from yantan.tethera.net (yantan.tethera.net [199.188.72.155]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by olra.theworths.org (Postfix) with ESMTPS id A0F36431FC9 for ; Wed, 16 Jul 2014 15:36:40 -0700 (PDT) Received: from remotemail by yantan.tethera.net with local (Exim 4.80) (envelope-from ) id 1X7XoV-0008VO-Ds; Wed, 16 Jul 2014 19:36:39 -0300 Received: (nullmailer pid 29658 invoked by uid 1000); Wed, 16 Jul 2014 22:36:35 -0000 From: David Bremner To: Mark Walters , notmuch@notmuchmail.org Subject: Re: [PATCH] dump: make dump take Xapian write lock In-Reply-To: <1403554349-8888-1-git-send-email-markwalters1009@gmail.com> References: <87zjhh67e7.fsf@qmul.ac.uk> <1403554349-8888-1-git-send-email-markwalters1009@gmail.com> User-Agent: Notmuch/0.18.1+45~gf47eeac (http://notmuchmail.org) Emacs/24.3.1 (x86_64-pc-linux-gnu) Date: Wed, 16 Jul 2014 19:36:35 -0300 Message-ID: <878unt7wy4.fsf@maritornes.cs.unb.ca> MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: notmuch@notmuchmail.org X-Mailman-Version: 2.1.13 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: Wed, 16 Jul 2014 22:36:45 -0000 Mark Walters writes: > Dump currently only takes the read lock. Xapian can cope with some > changes while maintaining a read snapshot but with more changes it > fails. Currently notmuch just gives a xapian error. > > To avoid this we take the write lock when dumping. This prevents other > notmuch processes from modifying the xapian database preventing this > error. pushed. This needs a NEWS item. d