Date: Tue, 22 Mar 2016 20:56:53 +0000
From: Chris Down <chris@chrisdown.name>
To: David Bremner <david@tethera.net>
Cc: notmuch@notmuchmail.org
Subject: Re: "The revision being read has been discarded - you should call
 Xapian::Database::reopen() and retry the operation"
Message-ID: <20160322205653.GC2233@chrisdown.name>
References: <20160322171509.GA2233@chrisdown.name>
 <87mvpql0d3.fsf@zancas.localnet>
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David Bremner writes:
>You could try running xapian-check $MAILDIR/.notmuch/xapian

Well, that settles it then:

    % xapian-check Mail/Facebook/.notmuch/xapian
    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
    Continuing check anyway
    Cross-checking document lengths between the postlist and termlist tables would use more than 1GB of memory, so skipping that check
    record:
    baseB blocksize=8K items=33895 lastblock=97 revision=19845 levels=1 root=97
    B-tree checked okay
    record table structure checked OK

    termlist:
    xapian-check: DatabaseCorruptError: Db block overwritten - are there multiple writers?

>It might be a good idea to make a backup with notmuch dump; this is a
>read-only operation so it should not make things worse.

Seems that that fatals for the same reason:

    % NOTMUCH_CONFIG=.config/notmuch/personal notmuch dump
    A Xapian exception occurred opening database: Db block overwritten - are there multiple writers?

I guess my best bet is to start with a fresh notmuch setup for this maildir?

Thanks for your help, David. I appreciate that. :-)

Chris