=head1 NAME

public-inbox-xcpdb - copy Xapian DBs (for format upgrades)

=head1 SYNOPSIS

	public-inbox-xcpdb INBOX_DIR

=head1 DESCRIPTION

public-inbox-xcpdb is similar to L<copydatabase(1)> for
upgrading to the latest database format supported by Xapian
(e.g. "glass" or "honey"), but is designed to tolerate and
recover from Xapian database modifications from
L<public-inbox-watch(1)> or L<public-inbox-mda(1)>.

This is intended for upgrading the database format used by
Xapian.  It DOES NOT upgrade the schema used by the
public-inbox search interface (see L<public-inbox-index(1)>).

=head1 ENVIRONMENT

=over 8

=item PI_CONFIG

The default config file, normally "~/.public-inbox/config".
See L<public-inbox-config(5)>

=item XAPIAN_FLUSH_THRESHOLD

The number of documents to update before committing changes to
disk.  This environment is handled directly by Xapian, refer to
Xapian API documentation for more details.

Default: 10000

=back

=head1 UPGRADING

=head1 CONTACT

Feedback welcome via plain-text mail to L<mailto:meta@public-inbox.org>

The mail archives are hosted at L<https://public-inbox.org/meta/>
and L<http://hjrcffqmbrq6wope.onion/meta/>

=head1 COPYRIGHT

Copyright 2019 all contributors L<mailto:meta@public-inbox.org>

License: AGPL-3.0+ L<https://www.gnu.org/licenses/agpl-3.0.txt>

=head1 SEE ALSO

L<copydatabase(1)>, L<public-inbox-index(1)>