Hello Friends, I have two physical disk, Already created a volume group, And creating a logical volume,
/dev/sdb1 - 5GB
/dev/sdc1 - 10GB
I need 3GB when creating the logical volume, How do I specify LVM should take 1GB from /dev/sdb1 and 2GB from /dev/sdc1 , Thanks 
I don’t think so it is possible.