Influences the number of Xapian indexing shards in a
(L<public-inbox-v2-format(5)>) inbox.
-C<--jobs=0> is accepted as of public-inbox 1.6.0 (PENDING)
-to disable parallel indexing.
+See L<public-inbox-init(1)/--jobs> for a full description
+of sharding.
+
+C<--jobs=0> is accepted as of public-inbox 1.6.0
+to disable parallel indexing regardless of the number of
+pre-existing shards.
If the inbox has not been indexed or initialized, C<JOBS - 1>
shards will be created (one job is always needed for indexing
it is possible to use this without C<--reindex>, it makes little
sense to do so.
-Available in public-inbox 1.6.0 (PENDING).
+Available in public-inbox 1.6.0+.
=item --prune
When using rotational storage but abundant RAM, using a large
value (e.g. C<500m>) with C<--sequential-shard> can
-significantly speed up the initial index and full C<--reindex>
-invocations (but not incremental updates).
+significantly speed up and reduce fragmentation during the
+initial index and full C<--reindex> invocations (but not
+incremental updates).
-Available in public-inbox 1.6.0 (PENDING).
+Available in public-inbox 1.6.0+.
=item --no-fsync
Disables L<fsync(2)> and L<fdatasync(2)> operations on SQLite
-and Xapian. This is only effective with Xapian 1.4+.
+and Xapian. This is only effective with Xapian 1.4+. This is
+primarily intended for systems with low RAM and the small
+(default) C<--batch-size=1m>. Users of large C<--batch-size>
+may even find disabling L<fdatasync(2)> causes too much dirty
+data to accumulate, resulting on latency spikes from writeback.
-Available in public-inbox 1.6.0 (PENDING).
+Available in public-inbox 1.6.0+.
=item --sequential-shard
per-invocation basis. See L</publicinbox.indexSequentialShard>
below.
-Available in public-inbox 1.6.0 (PENDING).
+Available in public-inbox 1.6.0+.
+
+=item --skip-docdata
+
+Stop storing document data in Xapian on an existing inbox.
+
+See L<public-inbox-init(1)/--skip-docdata> for description and caveats.
+
+Available in public-inbox 1.6.0+.
+
+=item --update-extindex=EXTINDEX, -E
+
+Update the given external index (L<public-inbox-extindex-format(5)>.
+Either the configured section name (e.g. C<all>) or a directory name
+may be specified.
+
+Defaults to C<all> if C<[extindex "all"]> is configured,
+otherwise no external indices are updated.
+
+May be specified multiple times in rare cases where multiple
+external indices are configured.
+
+=item --no-update-extindex
+
+Do not update the C<all> external index by default. This negates
+all uses of C<-E> / C<--update-extindex=> on the command-line.
=back
search results, but it is otherwise non-fatal. Using C<--reindex>
will bring everything back up-to-date.
-Available in public-inbox 1.6.0 (PENDING).
+Available in public-inbox 1.6.0+.
This is ignored on L<public-inbox-v1-format(5)> inboxes.
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/>
+The mail archives are hosted at L<https://public-inbox.org/meta/> and
+L<http://4uok3hntl7oi7b4uf4rtfwefqeexfzil2w6kgk2jn5z2f764irre7byd.onion/meta/>
=head1 COPYRIGHT
-Copyright 2016-2020 all contributors L<mailto:meta@public-inbox.org>
+Copyright 2016-2021 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<Search::Xapian>, L<DBD::SQLite>
+L<Search::Xapian>, L<DBD::SQLite>, L<public-inbox-extindex-format(5)>