This filters out the LANG and LC_ variables from the environment of programs
executed by RunCmd, in order to get consistent output of execute programs like
lvs, etc.

Reviewed-by: imsnah

- Clean generated files on “make maintainer-clean”.
- Build _autoconf.py and ganeti.initd on “make all”.

Reviewed-by: iustinp

This avoids forgetting some parameters, as it's happening right now 
(the correct known host file is not being passed)

In order to do so we split SSHCall into an auxiliary BuildSSHCmd which builds
the command but doesn't actually call it, and SSHCall itself which runs RunCmd
on top of BuildSSHCmd's result. BuildSSHCmd is then explicitely called by 
import/export who has to build a more complex command to be run later.

Reviewed-by: schreiberal

variables. The underline is there to mark it as a private module.

Reviewed-by: iustinp

- Bump version number to 1.2b2
- Add version.py file generated from version.py.in by autoconf

Reviewed-by: schreiberal

This changes the implementation of RunCmd from using the popen2 module
to using the (new in 2.4) subprocess module.

This is helpful because the subprocess module has more advanced features
than popen2, the most important ones being the ability to run code in the
child process before the exec and ability to launch with modified
environment.

Reviewed-by: imsnah

Also add some debugging output.

- Replace magic values by constants.

Reviewed-by: iustinp

This changes a ';' to '&&' to make sure we run the create script from
the correct directory.

Reviewed-by: imsnah

This adds a check that the initial node's IP name doesn't resolve to a
loopback address (127.x.y.z).

Also remove an unused variable.

Reviewed-by: imsnah

This changelist add:
  - documentation on how to select the kernel and initrd (if needed) for
    instances
  - support in hypervisor.py for the initrd
  - adds note about internet-connectivity and debootstrap requirements
    for the minimal etch os
  - documentation on the miminum xenvg size

Reviewed-by: roman.marxer,ultrotter

This changes the cluster init and node join to refuse a node that has a
different hostname than what the resolver returns.

Reviewed-by: imsnah

This fixes a compatibility problem with recent mdadm (2.x?) by
reimplementing the zero-ing of the superblocks in ganeti itself.

Reviewed-by: imsnah

This changes:
  - cluster setup, we no longer edit /etc/ssh/ssh_known_hosts but our
    own file
  - node add, we no longer remove root's known_hosts (twice)
  - gnt-instance console, both the LU and the script: since now the ssh
    setup is not standard, we need to build the ssh cmdline in the LU
    (instead of manually building it in the script) with the correct
    parameters and use the command line as returned in the script
  - ssh.py, many changes, split options in module-level constants so
    that building the command line in different places is easier/more
    logical
  - backend.py, we no longer remove root's known_hosts in Add node, and
    we allow our own known_hosts file to be uploaded

Reviewed-by: imsnah

This function used a hand-coded ssh call to remote nodes. Fix it to use the
ssh.SSHCall function, and in the process drop the command field from the
results, as it's too verbose and we can use (in gnt-cluster) what we passed in.

Reviewed-by: schreiberal

_GetWantedNodes is used wrongly by the LUClusterCopyFile. This fixes that.

Reviewed-by: imsnah

Reviewed-by: iustin

In case we use StrictHostKeyChecking=ask, also add HashKnownHosts=no so that
debugging is easier. The nodes to which we are connecting are anyway visible in
/etc/ssh/ssh_known_hosts.

Reviewed-by: imsnah

appropriate raise.

Reviewed-by: imsnah

Since the table generation might be useful elsewhere, let's change it to
return the data instead of directly printing it.

Its callers have also been updated.

Reviewed-by: imsnah

It fixes the main Makefile.am to create $localstatedir/{lib,log}/ganeti.
It fixes the testing Makefile.am after the rename fake_config.py ->
mocks.py.  It strips the output of "ip link show" to have a nicer output
if the master netdev does not exist.

This changes the raising of exceptions from:
  raise Exception, value
to
  raise Exception(value)

as the first form will be removed in python-3000 and the second form is
preferred now.

The changes also involve a few cases of changing from raising standard
exceptions and use our own ones.

The new version also fixes many pylint-generated warnings, especially in
ganeti-noded where I changed many methods to @staticmethod.

There is no functionality changed (barring any bugs).

This is only the backend part, from the command line the tags can't be
read/modified yet.

Reviewed-by: imsnah

Reviewed-by: iustinp

  - add an Update method on the ConfigWriter class;
  - make the AddInstance method not log disks for diskless types (helps with testing)
  - implement limited testing for the ConfigWriter with focus on the new Update method

won't reread it if not modified by someone else.

Reviewed-by: iustinp

configuration.

Reviewed-by: imsnah

instead use an UUID prefix and a suffix denoting the disk iv_name
(sda/sdb) and possibly it's type (data/meta).

Reviewed-by: imsnah

Reviewed-by: iustinp

Reviewed-by: iustinp

Reviewed-by: iustinp

Reviewed-by: iustinp

Reviewed-by: iustinp

Reviewed-by: iustinp

- Add the command to gnt-instance.sgml

Reviewed-by: iustinp

runnable on non-master nodes (and remove the list of instances and nodes
returned by it, that information can be retrieved by other opcodes).

Also, remove the node/instance list from "gnt-cluster info" as it
doesn't make sense to duplicate this information.

Reviewed-by: imsnah