This patch allows the dumb allocator to perform the replace secondary
request type. This is done simply by not allowing the current instances
nodes as a valid selection, and using the existing instance data instead
of the request (which doesn't have the instance info when doing the
replace_secondary).

Reviewed-by: ultrotter

This patch adds the 'required_nodes' field in the request dict for the
iallocator.

This means that the handmade-checks in the create instance can be
simplified, and that the dumb allocator can be made simple. Therefore
the patch also modifies it.

The patch also sends the disk_space_total to the script in realocate
mode and a small fix for showing errors (include stderr too).

Reviewed-by: ultrotter

This (final) patch allows the instance's nodes to be selected
automatically based on the passed allocator algorithm.

The patch changes the pnode opcode parameter from required to optional,
now either the pnode or the iallocator must be passed.

A possible improvement could be to organize all the _IAllocator
functions into a separate class, but that can come later and the current
version is functionally ok.

Reviewed-by: ultrotter

This patch adds the paths for searching for instance allocators and
makes the LUTestAllocator code run the allocator and return the results
if the direction specified is 'out'. 'out' means that the opcode will
return the result of the allocator run, instead of the allocator input
file ('in').

The patch unifies all names to refer to 'iallocator' instead of plain
allocator.

The patch also adds an example allocator that can be used for testing
this new functionality.

Reviewed-by: ultrotter

Reviewed-by: ultrotter

Currently, the example scripts (the init.d and the cron script) do not
depend on the Makefile, so if configure is rerun with different
parameters these scripts are not rebuild.

The patch adds Makefile as a dependency so changes to installation paths
or other parameters trigger the rebuild.

Reviewed-by: imsnah

Currently in order to deal with tmpfs /var/run, we create the
BDEV_CACHE_DIR in the init script. However, that does not cover all the
cases, and it's not a proper place to deal with it: for example, dealing
with not initialized clusters and the master node is more complicated.

Therefore, this patch does:
  - make ganeti-noded create the directory automatically
  - make ganeti-noded error out if it can't create it or it's already
    there but not a directory
  - remove the creation from the init.d script

Reviewed-by: ultrotter

The cron file in ganeti's example directory is now static, and executes
ganeti-watcher in /usr/local/sbin no matter where it's really installed. With
this patch we generate it at build time substituting the right value of
@SBINDIR@ from ganeti.cron.in. We also make sure ganeti-watcher exists and is
executable before running it.

This is targeted at 1.2 as well.

Reviewed-by: iustinp

Reviewed-by: iustinp

This patch adds some documentation about the proposed client API. It's
not yet complete, but should be a usable draft for the initial
implementation.

Reviewed-by: ultrotter

Reviewed-by: ultrotter

The script (which is geared towards Debian) is actually not fully
compliant, as lintian generates a warning on it - the S runlevel is not
a valid one in the "Stop" stanza. This patch removes "S" from the stop
list.

Reviewed-by: imsnah

This a merge to trunk of revision 494.

Reviewed-by: imsnah

Update documentation to document the HVM proof-of-concept.

Reviewed-by: iustinp

Since 8.0.6 and lower have issues that break Ganeti's usage of drbd,
this patch notes the required version of DRBD.

Reviewed-by: ultrotter

Reviewed-by: imsnah

Reviewed-by: imsnah

We want the name of the example OS to be nicer for packagers, so update
the install documentation accordingly.

Also, put in a notice about using the latest release OS version, so if
we forget to update this doc, we are not completely wrong.

Reviewed-by: schreiberal

This reverts commit 397, as the support in autoconf for docdir is
present since 2.59c, and this is too new for some distributions.

Reviewed-by: imsnah

The /var/run directory can be a tmpfs mount, so even if we make it at
install time (or include it in the package) it can go away. Therefore,
test for its existence and create it in the startup script.

Reviewed-by: imsnah

The docdir variable is defined by autoconf, so we don't need to define
it ourselves. This way, the target documentation directory can
be changed via ./configure instead of patching Makefile.am.

In truth, we should install the pdf and html files using the pdf and
html targets, since configure defines pdfdir=htmldir=docdir; but
installing them in docdir is good enough.

Reviewed-by: imsnah

Reviewed-by: schreiberal

By default xen tries to save running virtual machines at system shutdown and
restore them at reboot. Make sure we suggest to disable this feature in the
installation manual.

Reviewed-by: iustinp

The install manual was missing python-pyparsing and python-simplejson from the
apt-get install list. Adding them.

Thanks to Henning Sprang for spotting this issue.

Reviewed-by: iustinp

Reviewed-by: iustinp

This patch does:
  - add drbd8 information to the docs (the new disk template, examples,
    etc.)
  - fixes a section header to make it more clear
  - update the NEWS file by changing format (format taken by looking at
    /usr/sharea/doc/*/NEWS.gz) and adding more information on changes
    since beta1

Reviewed-by: ultrotter

Currently, an unreachable node (or one that return undetermined failure)
in the hooks pre-phase will abort the curren operation. This is not
good, as a down node could prevent many operation on the cluster.

This patch changes a RPC-level failure (and not a hook execution
failure) into a warning. It also modifies the related test cases.

This fixes issue 11.

Reviewed-by: ultrotter

This makes “make distcheck” work again.

Reviewed-by: schreiberal

Reviewed-by: schreiberal

Reviewed-by: ultrotter

This duplicates some code from the DRBDev class, but not very much, and
it will be expanded with the new functionality available for the 8.x
version. Currently the code is not accessible outside the module.

This patch introduces a dependency on the pyparsing module.

Reviewed-by: imsnah

This patch adds a new option to the instance removal command
"--ignore-failures" that forces the removal of the instance from the
configuration even if the removal process encounters errors.

In order to be able to do this when the remote node(s) is(are) down, we
need to restrict the execution of the instance removal hook to the
master only. I think this is a reasonable trade-off (but I'm not sure).

Reviewed-by: imsnah

This patch completely  gets rid of fping
 - replace all fping invocations with TcpPing calls
 - update documentation accordingly.
 - associated cleanups (use constant for localhost IP, use more sensible
   defaults for TcpPing and _use_ those)

Reviewed-by: iustinp

Reviewed-by: ultrotter

- Add NEWS file with major changes between versions.
- Bump RPC version number
- No longer serialize in RPC, but just convert to dict

Old Pickle based configuration files can be converted using the cfgupgrade
utility.

Reviewed-by: iustinp, ultrotter

Reviewed-By: imsnah

I was getting into trouble with gnt-backup and discovered reading the
code of the debian-etch os image and the error logs that:
     1 - Debian os image shipped by ganeti depends on the availability
of dump and restore.

Based on that I had included in the section of "Installing the
Operating System support packages" the dependency of dump/restore and
the command to install dump/restore.

Author: Leonardo Rodrigues de Mello <l@lmello.eu.org>
Reviewed-by: iustinp

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

Reviewed-by: iustinp

Reviewed-by: schreiberal

Reviewed-by: ultrotter