From: Gaute Hope Date: Mon, 28 Apr 2014 07:44:18 +0000 (+0200) Subject: Re: github mirror X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=563abfc75885ef9f0247e65f1bd5e7119654ca14;p=notmuch-archives.git Re: github mirror --- diff --git a/63/19b728e06be64811b4d4b3b320bfc4e0a72ccf b/63/19b728e06be64811b4d4b3b320bfc4e0a72ccf new file mode 100644 index 000000000..55b3e64c7 --- /dev/null +++ b/63/19b728e06be64811b4d4b3b320bfc4e0a72ccf @@ -0,0 +1,114 @@ +Return-Path: +X-Original-To: notmuch@notmuchmail.org +Delivered-To: notmuch@notmuchmail.org +Received: from localhost (localhost [127.0.0.1]) + by olra.theworths.org (Postfix) with ESMTP id 274DF431FBD + for ; Mon, 28 Apr 2014 00:45:36 -0700 (PDT) +X-Virus-Scanned: Debian amavisd-new at olra.theworths.org +X-Spam-Flag: NO +X-Spam-Score: -0.7 +X-Spam-Level: +X-Spam-Status: No, score=-0.7 tagged_above=-999 required=5 + tests=[RCVD_IN_DNSWL_LOW=-0.7] 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 sKfCV94Iv2Ip for ; + Mon, 28 Apr 2014 00:45:32 -0700 (PDT) +Received: from mail-la0-f44.google.com (mail-la0-f44.google.com + [209.85.215.44]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) + (No client certificate requested) + by olra.theworths.org (Postfix) with ESMTPS id 9C14B431FBC + for ; Mon, 28 Apr 2014 00:45:31 -0700 (PDT) +Received: by mail-la0-f44.google.com with SMTP id b8so4829741lan.3 + for ; Mon, 28 Apr 2014 00:45:28 -0700 (PDT) +X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; + d=1e100.net; s=20130820; + h=x-gm-message-state:content-type:from:to:subject:in-reply-to + :references:date:message-id:user-agent:content-transfer-encoding; + bh=KRjvpTdHENtY8cT7jLRGaeJ5xvh+nyfnqdGJplnHe/g=; + b=HMfeKysZ3QJDjhJ3fRUwR7zI7mudfYjA86mFFetkWNvnmmHnuYfbjII/St+pdJtlJG + HywfY5S/jDms0iBE0l6VHacuZ2UK+KGu7ujWuKTVPdgSGNVScmYrSm2n2F4A/HfV6lQ0 + 9vhIzJws9drtJXOy7cKU+Zm89qOAQBd5Qm64DOMAw+3Sg3oaKeJNoIcNBLMaY/p0sb3l + p3GNmQwVRc1IWytLrOak6PuznKbTDa9pTCSeSDVADNjMHWtvpWSETjO+oE87lw24cYiT + jFw8URbVKoWXCjY6Bmk6WYpE1PdsIqHc7AG1hSwIS6LUmIAj3+41lE9OXi+62SfmhrvP + 2AoA== +X-Gm-Message-State: + ALoCoQmZLjwXFsGcdxjLVTltxVFUVZSjHShhSiUQKjWe5KRmjT6GXxPB+cal7dNQKOH7t73X67GM +X-Received: by 10.112.46.225 with SMTP id y1mr17190437lbm.12.1398671128467; + Mon, 28 Apr 2014 00:45:28 -0700 (PDT) +Received: from localhost ([128.39.46.106]) by mx.google.com with ESMTPSA id + kk4sm18023621lbb.22.2014.04.28.00.45.27 for + (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); + Mon, 28 Apr 2014 00:45:27 -0700 (PDT) +Content-Type: text/plain; charset=UTF-8 +From: Gaute Hope +To: notmuch +Subject: Re: github mirror +In-reply-to: <87y4yq9g4d.fsf@ta.scs.stanford.edu> +References: <87bnvn111h.fsf@Samskara.home> <20140427223717.GQ25817@mit.edu> + <87y4yq9g4d.fsf@ta.scs.stanford.edu> +Date: Mon, 28 Apr 2014 09:44:18 +0200 +Message-Id: <1398670863-sup-1430@qwerzila> +User-Agent: Sup/git +Content-Transfer-Encoding: 8bit +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: Mon, 28 Apr 2014 07:45:36 -0000 + +Excerpts from David Mazieres's message of 2014-04-28 07:29:06 +0200: +> Austin Clements writes: +> +> > As for storing this information directly in messages, in general, the +> > notmuch community is opposed to modifying messages. This causes many +> > problems, and immutable messages are more robust and simplify so many +> > things. IMAP assumes messages are immutable. Maildir assumes +> > messages are immutable. Notmuch new would get dramatically slower if +> > it had to check for messages modifications. What do you do if you +> > change a tag and there are multiple copies of a message? What do you +> > do if there are multiple copies and they disagree about the tags? How +> > do you atomically update the tags stored in a message? From an +> > engineering standpoint, it's much better to avoid mutable messages. +> +> The speed penalty would be very minor in the common case. Muchsync +> scans directories (since it has to scan file contents) and the cost to +> compute SHA-1 hashes of modified files is under 50 msec or something in +> the common case. Extracting tags would be even cheaper. The reason is +> that A) you only need to scan modified directories, and B) you don't +> need to open the file unless the inode, mtime, or size has changed. +> Originally I was going to implement an optimization to detect renamed +> files and avoid computing SHA-1 again (for the case where maildir flags +> have changed), but in the end this wasn't even worth it because the cost +> is so small. +> +> That said, I agree that the complexity of altering files is not worth +> it. Especially since most imap servers will not know about this. Also, +> the question of what do you do with duplicate message IDs (which is +> effectively what you have when the tags disagree) is a more general +> problem still needing a solution, and would be exacerbated by embedding +> important information like tags in the message. +> +> Really what you want is an imap server built on top of the notmuch +> library. That way you could use notmuch from your desktop and then use +> imap from your phone, and everything would stay perfectly in sync. +> Implementing such a server wouldn't be that hard, but it would help if +> notmuch made the _notmuch_message_get_doc_id and +> _notmuch_directory_get_document_id functions semi-public. Then the imap +> server could just use docids as uids. (Plus then muchsync wouldn't have +> to go through gross contortions to get docids information...) + +That would be nice, but a solution where the user does not need to run +his own server is in my opinion pretty essential. + +- gaute + +