Re: "The revision being read has been discarded - you should call Xapian::Database...

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+Date: Tue, 22 Mar 2016 20:56:53 +0000\r
+From: Chris Down <chris@chrisdown.name>\r
+To: David Bremner <david@tethera.net>\r
+Cc: notmuch@notmuchmail.org\r
+Subject: Re: "The revision being read has been discarded - you should call\r
+ Xapian::Database::reopen() and retry the operation"\r
+Message-ID: <20160322205653.GC2233@chrisdown.name>\r
+References: <20160322171509.GA2233@chrisdown.name>\r
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+\r
+David Bremner writes:\r
+>You could try running xapian-check $MAILDIR/.notmuch/xapian\r
+\r
+Well, that settles it then:\r
+\r
+    % xapian-check Mail/Facebook/.notmuch/xapian\r
+    Database couldn't be opened for reading: DatabaseModifiedError: The revision being read has been discarded - you should call Xapian::Database::reopen() and retry the operation\r
+    Continuing check anyway\r
+    Cross-checking document lengths between the postlist and termlist tables would use more than 1GB of memory, so skipping that check\r
+    record:\r
+    baseB blocksize=8K items=33895 lastblock=97 revision=19845 levels=1 root=97\r
+    B-tree checked okay\r
+    record table structure checked OK\r
+\r
+    termlist:\r
+    xapian-check: DatabaseCorruptError: Db block overwritten - are there multiple writers?\r
+\r
+>It might be a good idea to make a backup with notmuch dump; this is a\r
+>read-only operation so it should not make things worse.\r
+\r
+Seems that that fatals for the same reason:\r
+\r
+    % NOTMUCH_CONFIG=.config/notmuch/personal notmuch dump\r
+    A Xapian exception occurred opening database: Db block overwritten - are there multiple writers?\r
+\r
+I guess my best bet is to start with a fresh notmuch setup for this maildir?\r
+\r
+Thanks for your help, David. I appreciate that. :-)\r
+\r
+Chris\r