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# Date Author Comment
5f0b9579 11/17/2009 11:44 am Iustin Pop

Introduce tag-based exclusion of primary instances

This patch introduces exclusion of primary instances based on tags. This
is incomplete as currently all tags are being excluded, and we don't
optimise towards relocation of instances sharing tags on the same node.

83ad1f3c 11/06/2009 07:13 pm Iustin Pop

hspace: show tiered-alloc stats in the output

This is a first attempt to get a readable output of tiered allocation
stats in hspace's output. Not very nice, but it should be somewhat
parseable.

1f9066c0 10/30/2009 01:23 pm Iustin Pop

Rework the instance spec CLI options

This patch reworks the internal handling of the instance spec CLI
option, and adds a tiered spec option that will be used in hspace to
enable the (auxiliary) tiered-spec allocation mode.

It also introduces a new data type for holding the instance...

c4ef235b 10/16/2009 05:24 pm Iustin Pop

Fix two haddoc/happy docstring issues

ee9724b9 10/16/2009 04:59 pm Iustin Pop

Start using the utilisation scores in balancing

This enables the per-node load/total available capacity scores to be
used in balancing. Note that the total available capacity is currently
fixed at zero and cannot be changed by the user.

2180829f 10/15/2009 05:05 pm Iustin Pop

Add initial structure for utilisation balancing

This patch adds the datatypes and modifies the nodes and instance types to have
such attributes. They are not used yet in any way.

924f9c16 10/14/2009 11:55 am Iustin Pop

Extend the MoveJob type to hold the instance index

This will be needed in order to generate the proper instance move commands.

Signed-off-by: Iustin Pop <>

66dac8e0 10/12/2009 03:13 pm Iustin Pop

Fix haddock issues with tuple members

It seems that haddock cannot document tuple members - but arguably, once
one needs to do that, tuples should not be used anymore.

This just moves the comments to the tuple comment.

Signed-off-by: Iustin Pop <>...

a2e90275 10/02/2009 06:54 pm Iustin Pop

Store the instance move in the MoveJobs

This will automatically sort our Ganeti jobs into the independent job
sets, and then we can submit them separately.

92e32d76 10/02/2009 06:48 pm Iustin Pop

Move some more type definitions to Types.hs

0e8ae201 10/02/2009 02:56 pm Iustin Pop

hbal: Implement grouping of moves into jobsets

Since moving two instances between different node-quadruples (inst X: A,
B → C, D and inst Y: E, F → G, H) can be parallelised by Ganeti, it
makes sense to split the operation list into jobsets whose execution...

135a6c6a 07/14/2009 03:56 pm Iustin Pop

Introduce timeout in RAPI queries

The patch adds two constants in Types.hs for connect and query timeout,
then modifies Rapi.hs to use them as the connect and general curl
timeout.

Rapi could be improved more, as currently we wait double the total
timeout due to not aborting early in case the node queries failed.

478df686 07/09/2009 03:44 pm Iustin Pop

Change the tryAlloc/tryReloc workflow

Currently, the tryAlloc and tryReloc function return a list with all the
results, both failures and successes. This is fine for hail, which does
one round of allocations, but is not so good for hspace, which does
iterative rounds; since at each (successful) step we only take the best...

2bbf77cc 07/08/2009 05:34 pm Iustin Pop

hspace: switch output to shell-script format

This (big) patch changes the output of hspace from text-format
(separated by ‘: ’) to a shell-snippet, in ‘key=value’ format.

This will allow sourcing the output or parsing it via awk/sed/etc.

44763b51 07/05/2009 06:56 pm Iustin Pop

Add computation of the failure reason in hspace

This patch enhances hspace to report why the allocation sequence
stopped, both in absolute error count and for the top reason.

f2280553 07/05/2009 03:53 pm Iustin Pop

Introduce a new type for allocation results

Currently the allocation/move operations workflow return ‘Maybe a’,
which is very convenient but loses all details about the failure mode.

This patch introduces a new data type which encodes the specific failure...

e2fa2baf 06/01/2009 12:55 pm Iustin Pop

Add copyright/license information

This doc-patch adds copyright and license information to (hopefully) all
needed files.

19f38ee8 06/01/2009 12:18 pm Iustin Pop

Move the RqType and Request types to Loader.hs

These two will be more generic than now, and belong somewhere else -
Loader.hs is a generic module for data loading, thus we move them there.

9188aeef 06/01/2009 12:18 pm Iustin Pop

Lots of documentation updates

This patch does only doc build changes, doc changes and function move
around (for more logical documentation). It should have no impact at all
on the code.

f9fc7a63 05/27/2009 11:01 pm Iustin Pop

Remove an unused type synonim

608efcce 05/27/2009 10:45 pm Iustin Pop

Add type synonyms for the node/instance indices

This is a first step towards full datatype renaming. That requires more
changes, so at first we only want to document clearly what is a node
index, what is an instance index, and what is a plain Int.

262a08a2 05/27/2009 02:17 am Iustin Pop

Change the module import hierarchy

This patch makes the Types module a base module, and Node/Instance ones
import it, from the previous (opposite) situation. This will allow in
the future to use newtypes for the index and name types.

ed41c179 05/25/2009 01:09 am Iustin Pop

Start implementing the hail functionality

This patch implements a very stupid (and broken) version of hail
‘allocate’.

4333a887 05/24/2009 02:22 am Iustin Pop

Add some utility functions for kt deprecation

These will be used to remove even more uses of ktn/kti in non-critical
paths.

497e30a1 05/23/2009 03:24 am Iustin Pop

Add a small class for Nodes and Instances

Since both nodes and instances support some common functionality (names
and indices), we add a class so that we can access these attributes in a
generic way.

e4c5beaf 05/23/2009 02:29 am Iustin Pop

More code reorganizations

This new big patch does a couple of more cleanups in the loading of data
chapter:
- introduce a Types module that holds most types (except the base
Node/Instance/etc.) so that multiple other modules can use these
(instead of only Cluster and its users)...