What's pydm

A python wrapper for linux device mapper command(dmsetup).

Features of pydm

• Execute dmsetup in your python script.

• Easy to use, avoid fussy arguments of the command.

• Supported multiple mapping methods.

  1. Linear
  2. Snapshot
  3. Multipath

How to get pydm

git clone https://github.com/zylan29/pydm.git

Installation

python setup.py install

Sample usage

Linear

Build linear map from two hard disks:

from pydm.dmlinear import DmLinearTable
hdd_group = DmLinearTable.from_disks(group_name, [hdd_1, hdd_2], root_helper='sudo')

Snapshot

Multipath

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https://github.com/lihuiba/flashcachegroup

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https://github.com/vmthunder/virtman