X-Git-Url: http://www.git.stargrave.org/?a=blobdiff_plain;f=Documentation%2Fpublic-inbox-extindex.pod;h=a0fca83c6255b1bcfa5a89270501dba164004cdb;hb=fc70bf064fd13def9a919b7cc264a3a1dcff6e79;hp=2e2e6383b79b35c31f7be30ed1daa7996a1674dd;hpb=4666eceed62cc37d02cd7d35d8ab327ef3833636;p=public-inbox.git

diff --git a/Documentation/public-inbox-extindex.pod b/Documentation/public-inbox-extindex.pod
index 2e2e6383..a0fca83c 100644
--- a/Documentation/public-inbox-extindex.pod
+++ b/Documentation/public-inbox-extindex.pod
@@ -40,6 +40,28 @@ C<indexlevel> set to C<basic> and their respective Xapian
 public-inboxes where cross-posting is common, this allows
 significant space savings on Xapian indices.
 
+=item --gc
+
+Perform garbage collection instead of indexing.  Use this if
+inboxes are removed from the extindex, or if messages are
+purged or removed from some inboxes.
+
+=item --reindex
+
+Forces a re-index of all messages in the extindex.  This can be
+used for in-place upgrades and bugfixes while read-only server
+processes are utilizing the index.  Keep in mind this roughly
+doubles the size of the already-large Xapian database.
+
+The extindex locks will be released roughly every 10s to
+allow L<public-inbox-mda(1)> and L<public-inbox-watch(1)>
+processes to write to the extindex.
+
+=item --fast
+
+Used with C<--reindex>, it will only look for new and stale
+entries and not touch already-indexed messages.
+
 =back
 
 =head1 FILES