How to create LVM in Linux and how we can took th e backup of LVM?

1- Create logic partition with file system (8e=lvm)

2- # pvcreate /dev/sd?? /dev/sd??         to convert this partition to physical volum

3- # vgcreate <volume group name >   /dev/sd?? /dev/sd??    to Combine physical volumes into volume group

4- #lvcreate --name <lvm name>  --size <size by Gb>  <volume group name >   to create a logical volume from the volume group

5- create file system then mount it

6- # lvcreate --name <snap name > -- size -s <lvm which you need to snapshot it >

to create snapshots

• Create  partitions with desire size
• Convert them into physical  volumes.
• Combine physical volumes into volume group.
• Finally create a logical volume from the volume group.
• Using LVM snapshots for backup and restore of filesystems

Let me know if you need more details