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+From: Eric J <eric@deptj.eu>\r
+Subject: Re: Lost updates to Notmuch database\r
+To: notmuch@notmuchmail.org\r
+In-Reply-To: <m27fi2nl9x.fsf@guru.guru-group.fi>\r
+References: <337393ce5e2484d64f837a44b2c4f2ea32f91295-NM@bruno.deptj.eu>\r
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+\r
+On Thu, 18 Feb 2016 16:30:34 +0200, Tomi Ollila <tomi.ollila@iki.fi> wrote:\r
+> On Thu, Feb 18 2016, David Bremner <david@tethera.net> wrote:\r
+> \r
+> > Eric J <eric@deptj.eu> writes:\r
+> >\r
+> >> However, if I do it twice, in different processes, at the same time, one\r
+> >> file is added and tagged properly, the other is not (totally unfindable\r
+> >> by notmuch search). Neither process reports any error, and they both log\r
+> >> their actions normally. Actually a third simultaneous process also fails\r
+> >> to leave any result in the database.\r
+> >\r
+> > It should be impossible for more than one process to open a Xapian\r
+> > database for writing at the same time. So if the processes are really\r
+> > running in parallel, you should be getting error codes from the later\r
+> > calls to notmuch_database_open{_verbose}. You claim that's not\r
+> > happening, which is puzzling. Maybe you can try to duplicate your\r
+> > problem with a tiny C program.\r
+> \r
+> In addition to that (or even before), you could\r
+> \r
+> 1) be able to reproduce the problem\r
+\r
+As I said in my response to David, I can do just the open, and see that\r
+there is no lock, and do the same open in another session without error.\r
+\r
+> 2) try to reproduce it prefixing the command with ltrace -tt\r
+\r
+Well, as you say below, no Xapian references. Even worse, ltracing the\r
+Tcl version sees no Notmuch references either.\r
+\r
+> 3) examine carefully the ltrace logs to figure out where the proble lies\r
+\r
+So all I can see is that the notmuch_database_open from notmuch new\r
+looks just like I think mine would look - if I could see it.\r
+\r
+(Adding -S to ltrace was not particularly informative either.)\r
+\r
+> Tomi\r
+> \r
+> Hmm, Interestingly when I run\r
+> \r
+> LD_LIBRARY_PATH=~/vc/ext/notmuch/lib ltrace -f -tt ~/vc/ext/notmuch/notmuch-shared new\r
+> \r
+> I did not see any Xapian references, but when I did\r
+> \r
+> ltrace -f -tt ~/vc/ext/notmuch/notmuch new\r
+> \r
+> I did. Interestingly when using libnotmuch.so.4 the xapian interface\r
+> is hidden (is it baked inside ~/vc/ext/notmuch/lib/libnotmuch.so.4.3.0 :O)\r
+\r
+My latest piece of evidence suggests that this may not be a Notmuch\r
+problem, because opening a Xapian database via the Xapian-Tcl bindings\r
+results in:\r
+\r
+COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME\r
+cat 2803 eric 5w REG 8,9 0 526601 /home/eric/omega/data/newsgroups/flintlock\r
+\r
+No lock here either (and this is not even a Notmuch database). \r
+\r
+Investigations will continue.\r
+\r
+Eric\r
+-- \r
+ms fnd in a lbry\r
projects / notmuch-archives.git / commitdiff