* fix: raise error when dbversion not present and in read mode

* fix: do not try to init dbenv unnecessarily

pisi/api.py

@@ -336,9 +336,9 @@ def rebuild_db(files=False):
 
     def destroy(files):
         #from pisi.lockeddbshelve import LockedDBShelf
+        #pisi.lockeddbshelve.init_dbenv(write=True)
         #TODO: either don't delete version files here, or remove force flag...
         import bsddb3.db
-        pisi.lockeddbshelve.init_dbenv(write=True)
         for db in os.listdir(ctx.config.db_dir()):
             if db.endswith('.bdb') or db.startswith('log'):  # delete only db files
                 if db.startswith('files') or db.startswith('filesdbversion'):

pisi/lockeddbshelve.py

@@ -54,12 +54,14 @@ def check_dbversion(versionfile, ver, write=False, force=False):
             return True # return if force not set and db version ok
     if write:
         if os.access(pisi.context.config.db_dir(), os.W_OK):
-            ctx.ui.warning(_('Writing current database version'))
+            ctx.ui.warning(_('Writing current database version for %s') % versionfile)
             verfile = file(verfn, 'w')
             verfile.write(ver)
             verfile.close()
         else:
             raise Error(_('Cannot attain write access to database environment'))
+    else:
+        raise Error(_('Database version %s not present.') % versionfile)
 
 def init_dbenv(write=False, writeversion=False):
     if os.access(pisi.context.config.db_dir(), os.R_OK):