X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/disorder/blobdiff_plain/b7adf2b1d74bd9008daa711086b58b615273c708..06f35ddcffa7e9d5a6c6b53cbb07ef11fab49f95:/README.reload

diff --git a/README.reload b/README.reload
index 66d74a8..f9fa4c7 100644
--- a/README.reload
+++ b/README.reload
@@ -5,51 +5,59 @@ This is current rather vaguely defined and implemented.  This file
 will lay out what you can and cannot change over a reconfigure.  Any
 other changes will require a full server restart.
 
-I intend to improve the situation, but for now this is how it is.
+The situation is gradually improving; this file tracks the current
+state.
 
 * Options that might have to remain the same across restart
 
 Arguably if there is anything in this section then that's a serious
 bug!
 
-** alias
+** alias (enforced at reload only)
 
 This defines how aliases are inserted into the track database.  Need
 to think about how changing it will affect things.
 
-** namepart
+** namepart (enforced at reload only)
 
 Probably affects alias construction.
 
-** stopword
+** stopword (enforced at reload only)
 
-The search database will have to be rebuilt from scratch.  This is
-do-able but AFAIK we don't detect it.
+The search database will have to be rebuilt from scratch.
 
-** user
+** user (enforced at reload only)
 
 All the files will be owned by the wrong user!
 
+** Alias, search database, etc
+
+Rescan can regenerate aliases and the search and tag databases but we
+rather assume that they are either empty or good.  Therefore we need
+to store anything that can affect these values and erase them if they
+change.
+
+The solution is a global pref _dbparams which contains the hash of the
+alias, stopword and namepart data.
+
 * Options that must remain the same across reload
 
 Some things will just require a restart.  We should either enforce
 this (refusing to accept modified configurations that purport to
 change them) or explicitly ignore it.
 
-** home
+** home (enforced at reload)
 
-We absolutely cannot accept changing our state directory.  If this is
-attempted it must be rejected.
+We absolutely cannot accept changing our state directory.
 
-** lock
+** lock (generates a deprecation warning)
 
 Liable to be removed anyway.
 
-** nice_speaker
+** nice_speaker (generates a warning)
 
-Can't renice a running speaker to make it less nice (and we don't try
-to make it more nice).  We ought to issue an error message and
-otherwise ignore.
+You can't renice a running speaker to make it less nice (and we don't
+try to make it more nice).
 
 * Options that ought to be changable across reload but aren't