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In python-psutil 2.0 the name attribute of Process was changed from
string to method.

Remove execution flag on python files

Archipelago creates volumes using ganeti's disk name instead of logical
id. So, use this parameter in the instance hooks if it exists. Otherwise
fallback to previous functionality (i.e. ganeti's logical id).

Accept an ExtStorage parameter called "reuse_data", which will be used
for the creation of a volume. If true, Archipelago will not create a new
volume and reuse an existing one.

Conflicts:
	conf/archipelago.conf
	conf/archipelago.conf.rados_example

Update ci config to reflect the updated debian image and the updated flavor id.

Add ganeti hooks to lock volumes before performing a failover or starting up a
vm. This will ensure that no VM will be failovered or started when stale locks
exist.

Conflicts:
	ganeti/ext_scripts/vlmc_wrapper.py
	src/mt-vlmcd.c
	version
	xseg/base.mk
	xseg/tools/Makefile
	xseg/tools/ext_scripts/Makefile

Update 0.4 and 0.4rc2 upgrade notes to explicitly state that in case
Archipelago+NFS is integrated with Synnefo, the Synnefo upgrade notes
must be used in order to adjust permissions.

Correctly drop privilege. More specifically:

* Use initgroups to set group permissions correctly.
* Improve error logging.

When receiving a zero-sized write request, do not complete it immediately.
Instead, make the actual librados write call in order to create the RADOS
object. This is particularly useful for Pithos's zero object.