Grow a VM disk

The Process

All the linux VirtualMachine should have been configured with lvm. It's a good idea to not grow the disks they already have but to:

• add a second disk (example /dev/sdb) from the proxmox UI
• create a partition ( /dev/sdb1 )
• add it to the Volume group.
• extend the LV of interest and the filesystem

This way you can extend the logical volume and afterwards the filesystem easily.

Growing the VM disk

• Add a new disk in ESXi
• Partition the new disk

 df -h
 fdisk -l
 fdisk /dev/sdb (n-ew, p-rimary, w-rite)

• Create New Physical Device

 pvcreate /dev/sdb1

• Extend the existing volume group

 vgextend name-vg /dev/sdb1

• Extend the logical volume

 lvdisplay
 lvextend --resizefs -L+10G /dev/name-vg/xyz