How to provide Elasticity To Hadoop using Python Automation

LVM
  1. Physical Volume
  2. Volume Group
  3. Logical Volume
LVM infrastructure

Physical Volume:

Physical block devices or other disk-like devices (for example, other devices created by device-mapper, like RAID arrays) are used by LVM as the raw building material for higher levels of abstraction.

Volume Group:

The Volume Group is the highest level abstraction used within the LVM. It gathers together a collection of Logical Volumes and Physical Volumes into one administrative unit.

Logical Volume:

The equivalent of a disk partition in a non-LVM system. The LV is visible as a standard block device; as such the LV can contain a file system .

Hadoop logs
Attached volume
PV
vgdisplay
LV creation
Mounting Operation
hadoop logs
Python script
hadoop logs

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