qemu-ga: debug printouts to help troubleshoot installation

Debug printouts extended, helps installation troubleshooting
Signed-off-by: NYossi Hindin <yhindin@redhat.com>
Message-Id: <1430913460-13174-3-git-send-email-yhindin@redhat.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

qga/channel-win32.c

@@ -306,7 +306,7 @@ static gboolean ga_channel_open(GAChannel *c, GAChannelMethod method,
                            OPEN_EXISTING,
                            FILE_FLAG_NO_BUFFERING | FILE_FLAG_OVERLAPPED, NULL);
     if (c->handle == INVALID_HANDLE_VALUE) {
-        g_critical("error opening path");
+        g_critical("error opening path %s", newpath);
         return false;
     }
 

qga/commands-win32.c

@@ -721,6 +721,7 @@ GList *ga_command_blacklist_init(GList *blacklist)
     }
 
     if (!vss_init(true)) {
+        g_debug("vss_init failed, vss commands are going to be disabled");
         const char *list[] = {
             "guest-get-fsinfo", "guest-fsfreeze-status",
             "guest-fsfreeze-freeze", "guest-fsfreeze-thaw", NULL};