From d9bf5f08e7390c31a2d813e84c52a440f0f2076c Mon Sep 17 00:00:00 2001
From: Tomeu Vizoso <tomeu@tomeuvizoso.net>
Date: Wed, 19 Dec 2007 18:10:57 +0000
Subject: #2545 Clean up correctly when unmounting a non-present removable device.

---
diff --git a/src/olpc/datastore/backingstore.py b/src/olpc/datastore/backingstore.py
index 12dc582..e900649 100644
--- a/src/olpc/datastore/backingstore.py
+++ b/src/olpc/datastore/backingstore.py
@@ -22,6 +22,8 @@ import threading
 import errno
 import shutil
 import urllib
+import traceback
+import sys
 
 import dbus
 import xapian
@@ -267,11 +269,15 @@ class FileBackingStore(BackingStore):
         if 'uri' not in desc: desc['uri'] = self.uri
         if 'title' not in desc: desc['title'] = self.uri
 
-
-        fp = open(fn, 'w')
-        pickle.dump(desc, fp)
-        fp.close()
-
+        # TODO: Would be better to check if the device is present and
+        # don't try to update the descriptor file if it's not.
+        try:
+            fp = open(fn, 'w')
+            pickle.dump(desc, fp)
+            fp.close()
+        except IOError, e:
+            logging.error('Unable to write descriptor:\n' + \
+                ''.join(traceback.format_exception(*sys.exc_info())))
 
     @staticmethod
     def parse(uri):
diff --git a/src/olpc/datastore/datastore.py b/src/olpc/datastore/datastore.py
index bf3cfaf..67ddca9 100644
--- a/src/olpc/datastore/datastore.py
+++ b/src/olpc/datastore/datastore.py
@@ -106,13 +106,10 @@ class DataStore(dbus.service.Object):
         """Unmount a mountpoint by id"""
         if mountpoint_id not in self.mountpoints: return
         mp = self.mountpoints[mountpoint_id]
-        try:
-            mp.stop()
-        except:
-            logger.warn("Issue with unmounting store. Trying to continue")
+        mp.stop()
             
-        self.Unmounted(mp.descriptor())
         del self.mountpoints[mountpoint_id]
+        self.Unmounted(mp.descriptor())
 
     @dbus.service.signal(DS_DBUS_INTERFACE, signature="a{sv}")
     def Mounted(self, descriptior):
diff --git a/src/olpc/datastore/xapianindex.py b/src/olpc/datastore/xapianindex.py
index d071eba..888bd26 100644
--- a/src/olpc/datastore/xapianindex.py
+++ b/src/olpc/datastore/xapianindex.py
@@ -22,6 +22,7 @@ import time
 import thread
 import threading
 import warnings
+import traceback
 
 import secore
 import xapian as _xapian # we need to modify the QueryParser
@@ -124,7 +125,15 @@ class IndexManager(object):
         logging.debug('IndexManager.stop()')
         self.flush(force=True)
         self.stopIndexer(force)
-        self.write_index.close()
+
+        # TODO: Would be better to check if the device is present and
+        # don't try to close if it's not.
+        try:
+            self.write_index.close()
+        except _xapian.DatabaseError, e:
+            logging.debug('Index close failed:\n' + \
+                ''.join(traceback.format_exception(*sys.exc_info())))
+
         #self.read_index.close()
         # XXX: work around for xapian not having close() this will
         # change in the future in the meantime we delete the
@@ -165,7 +174,15 @@ class IndexManager(object):
         self.deltact += 1
         if force or self.deltact > FLUSH_THRESHOLD:
             with self._write_lock:
-                self.write_index.flush()
+
+                # TODO: Would be better to check if the device is present and
+                # don't try to flush if it's not.
+                try:
+                   self.write_index.flush()
+                except _xapian.DatabaseError, e:
+                    logging.debug('Index flush failed:\n' + \
+                        ''.join(traceback.format_exception(*sys.exc_info())))
+
                 #self.read_index.reopen()
                 self.deltact = 0
         else:
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