The storage driver refreshes a volume's capacity+allocation data when the 'info' command is called. Seems that we should also update it when dumpxml is called, which also returns size information.

commit 26ec9d5cd9ae919ccdf3d122dcf3832f61f9476f Author: Cole Robinson <crobinso(a)redhat.com&gt; Date: Wed Apr 1 16:07:12 2009 -0400 Refresh volume alloc/capacity when dumping XML. diff --git a/src/storage_driver.c b/src/storage_driver.c index b261843..97fcf69 100644 --- a/src/storage_driver.c +++ b/src/storage_driver.c @@ -1389,6 +1389,10 @@ storageVolumeGetXMLDesc(virStorageVolPtr obj, if ((backend = virStorageBackendForType(pool->def->type)) == NULL) goto cleanup; + if (backend->refreshVol && + backend->refreshVol(obj->conn, pool, vol) < 0) + goto cleanup; + ret = virStorageVolDefFormat(obj->conn, pool->def, vol); cleanup: