Why does VDSM repeatedly tries to run "sudo lvm --config ..." but does not have password in Red hat Enterprise Virtulization??

Issue

• VDSM repeatedly tries to run "sudo lvm --config ...". Getting following logs on the host:

Thread-366951::DEBUG::2012-07-24 21:01:06,425::lvm::439::OperationMutex::(_reloadvgs) Operation 'lvm reload operation' got the operation mutex
Thread-366951::DEBUG::2012-07-24 21:01:06,426::lvm::374::Storage.Misc.excCmd::(cmd) '/usr/bin/sudo -n /sbin/lvm vgs --config " devices { preferred_names = [\\"^/dev/mapper/\\"] ignore_suspended_devices=1 write_cache_state=0 disable_after
_error_count=3 filter = [ \\"a%36782bcb00874ea0014e82836077f74cb%\\", \\"r%.*%\\" ] }  global {  locking_type=1  prioritise_write_locks=1  wait_for_locks=1 }  backup {  retain_min = 50  retain_days = 0 } " --noheadings --units b --nosuff
ix --separator | -o uuid,name,attr,size,free,extent_size,extent_count,free_count,tags,vg_mda_size,vg_mda_free f63a3cdd-5636-4c4a-826d-ccbe5c914ea1' (cwd None)
Thread-366951::DEBUG::2012-07-24 21:01:06,436::lvm::374::Storage.Misc.excCmd::(cmd) FAILED: <err> = 'sudo: sorry, a password is required to run sudo\n'; <rc> = 1
Thread-366951::WARNING::2012-07-24 21:01:06,438::lvm::443::Storage.LVM::(_reloadvgs) lvm vgs failed: 1 [] ['sudo: sorry, a password is required to run sudo']
Thread-366951::DEBUG::2012-07-24 21:01:06,439::lvm::466::OperationMutex::(_reloadvgs) Operation 'lvm reload operation' released the operation mutex
Thread-366951::ERROR::2012-07-24 21:01:06,442::sp::1094::Storage.StoragePool::(getInfo) Could not get information for domain f63a3cdd-5636-4c4a-826d-ccbe5c914ea1
Traceback (most recent call last):
  File "/usr/share/vdsm/storage/sp.py", line 1092, in getInfo
    stats.update(SDF.produce(item).getStats())
  File "/usr/share/vdsm/storage/sdf.py", line 30, in produce
    newSD = cls.__sdc.lookup(sdUUID)
  File "/usr/share/vdsm/storage/sdc.py", line 77, in lookup
    dom = self._findDomain(sdUUID)
  File "/usr/share/vdsm/storage/sdc.py", line 101, in _findDomain
    raise se.StorageDomainDoesNotExist(sdUUID)
StorageDomainDoesNotExist: Storage domain does not exist: ('f63a3cdd-5636-4c4a-826d-ccbe5c914ea1',)