removing a disk from user-defined VG

check the activated volume group.

#lsvg -o

rootvg
datavg
quavg

#lsvg -p datavg

vpath12
vpath13

now using the migratepv command migrate all the  filesystem from vpath13 to vapth12

#migratepv vpath13  vpath12


check that any pp is allocated

#lspv -M vpath13 or # lspv -l vpath13


check whether all the filesytems are available

#lsvg -l datavg

now reduce the disk vpath13 from VG

#reducevg vpath13  datavg

now remove the vpath13 .

#rmdev -Rdl vpath13
vpath13 deleted



note: there is no need to unmount the filesystems or varyoff vg while running migratepv command.