Archipelago

ext_storage: Add 'snapshot' action

Extend supported actions with the 'snapshot' action, which is used
to snapshot an existing image. Also, refactor 'ReadEnv' function to
return a dictionary instead of a tuple.

archipelago: Catch exceptions in argument parsing

archipelago: Enforce nr_ops as a power of 2 for all peers

archipelago: Fix wrong identation and typos

Change location of settings file to /etc/archipelago

Adjust tests to the new Segment class

ext_storage: Check for 'pithos:' on create.

archipelago: Declare segment as Class and modify settings

Declare xseg segment as class, and make use of its methods. Also modify config
file check to expect segment parameters instead of one segment spec.

archipelago: Add spec config when creating segment

vlmc: Do not map an already mounted volume

archipelago: Add support for nested locking

vlmc: add cont_addr option in snapshot command

tests: Add extra tests for hashing.

tests: Add testing for cloning archipelago snapshots

python xseg: Enrich request/xseg python api.

Add more constructors for the Request class.
Add xseg_wait_requests to wait on multiple requests.
Modify vlmc script to use the new constructors.

Improve python archipelago common infrastructure.

The changes include: * Convert pfiled to filed and add the extra arguments * Check if arguments are not None instead of simply checking for arguments * Move request to seperate method and remove del method...

archipelago: Modify launch scripts.

Modify archipelago launch scripts to support more descriptive configuration.
Configuration now describes the peers which will be lauched along with their
roles and specific options for each one of them.

Fix licence headers in multiple files

Add licence headers to all code files and adjust interpreter in script files.

Rename archipelago peers with archip- prefix

Fix permissions in ext storage log directory.

Add ceph dependency to python archipelago setup.py

Fix xseg, archipelago python cleanup

Fix xseg dependency for archipelago tool

Makefiles do not remove version files

Add ctypes import to vlmc.py

PEP8 fixes for python xseg

Adjust vlmc ext scripts to the new archipelago module

More PEP8 fixes

Make vlmc snapshot return snapshot name on success

Fix archipelago / vlmc modules

Make vlmc module function take kwargs

Fix sys.exit in cli entry point

Make archipelago/vlmc tool modular

Fix xsegbd_args in archipelago tool

Fix imports in vlmc tool

Make vlmc use configurable lock file dir.

Set as /var/lock as default. Also increased spin lock sleep time to 0.2s

Make vlmc list volumes using python rados module

Change order of mapper, vlmc in archipelago peer construction

Vlmc tool checks if peer is running before stoping it.

Merge branch 'feature-python' into xseg-refactor

Add open, close, lock, unlock functionality to vlmc tool

In this commit open, close, lock, unlock functionality is introduced to vlmc
tool.
This commit also includes fixes to xseg python classes and to vlmc spin lock.

Add snapshot support to vlmc tool

add argument parsing to xsegbd modprobe

add license headers

fix archipelago output and add --user option

add vlmc list for rados

merge archipelago and vlmc scripts

make create/remove on vlmc exclusive

fix conf errors

fix missing map object creation in volume creation, plus map size, map error handling