df -h
/dev/mapper/datavg-redoa_lv
10G 5.0G 5.1G 50% /oracleser/oradata/dsmdb/redo_a
/dev/mapper/datavg-redob_lv
10G 5.0G 5.1G 50% /oracleser/oradata/dsmdb/redo_b
/dev/mapper/datavg-arch_lv
60G 21G 40G 34% /oracleser/oradata/dsmdb/arch
/dev/mapper/datavg-data_lv
220G 202G 19G 92% /oracleser/oradata/dsmdb/dat

# vgs
Couldn't find device with uuid 'YHWDz4-2UdG-S35b-MNdn-XUim-XHy6-fgBqHS'.
Couldn't find all physical volumes for volume group datavg.
Couldn't find device with uuid 'YHWDz4-2UdG-S35b-MNdn-XUim-XHy6-fgBqHS'.
Couldn't find all physical volumes for volume group datavg.
Couldn't find device with uuid 'YHWDz4-2UdG-S35b-MNdn-XUim-XHy6-fgBqHS'.
Couldn't find all physical volumes for volume group datavg.
Couldn't find device with uuid 'YHWDz4-2UdG-S35b-MNdn-XUim-XHy6-fgBqHS'.
Couldn't find all physical volumes for volume group datavg.
Couldn't find device with uuid 'YHWDz4-2UdG-S35b-MNdn-XUim-XHy6-fgBqHS'.
Couldn't find all physical volumes for volume group datavg.
Couldn't find device with uuid 'YHWDz4-2UdG-S35b-MNdn-XUim-XHy6-fgBqHS'.
Couldn't find all physical volumes for volume group datavg.
Volume group "datavg" not found
VG #PV #LV #SN Attr VSize VFree
dbmsvg 2 1 0 wz--n- 74.41G 24.41G
system 1 8 0 wz--n- 409.59G 292.59G

As shown above, datavg the VG system is mounted in the LV was also in use, but should not see vgs in vg