[Debug] XenServer vgscan Couldn't find device with uuid

indigo:~# vgscan
Reading all physical volumes. This may take a while...
Couldn't find device with uuid 'p4YzIv-Ntiq-NxPo-J4tw-UDXF-4w4V-FiXqLl'.
Couldn't find all physical volumes for volume group storage.
Volume group "storage" not found

solve : vgreduce --removemissing vg00