I need to know the best way to implement the snapshot of root partition "/" on a kvm guest. What I have is as follows
/dev/vda ..... 10G free -- /dev/vda1 boot partition (ext - 83) -- /dev/vda2 / parition (Linux LVM format - 8e)
No space in volume group.
/dev/sda ..... 10G free (iscsi drive) --/dev/sda1 being used for nfs clustered file system
This node is a part of nfs 3 nodes cluster.
My question is to create a space in volume group on this node
Should I increase the size of / (/dev/vda2) -- then pvresize ... then vgextend ....and then create a snapshop of root lvm?
Should I create another lvm partition on iscsi drive (/dev/sda) -- then add it to pvcreate ... then vgextend ..... and then create a snapshot of root lvm?