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# Date Author Comment
5182e970 02/25/2010 03:39 pm Iustin Pop

A number of small fixes from hlint

5ab2b771 02/23/2010 02:53 pm Iustin Pop

Loader: abort for unknown to-be-excluded instances

39f979b8 02/23/2010 02:09 pm Iustin Pop

Update the loader pipeline to set the movable flag

This updates the movable flag on instances if they have only one node
(we don't rely on OpMoveInstance) or if they are set so via the command
line options.

This doesn't yet enable the use of the new flag.

54365762 02/22/2010 04:19 pm Iustin Pop

Implement IAllocator node evacuate request

This patch adds the new request loading/execution (trivial), but the
actual response formatting becomes more difficult as now the response
type differs by request.

Signed-off-by: Iustin Pop <>

f5e67f55 12/01/2009 02:49 pm Iustin Pop

Configure exclusion tags via the cluster tags

This patch adds reading of the exclusion tags from the cluster tags: any
tags starting with htools:iextags: will convert their suffix into an
exclusion tags prefix. In other words, "htools:iextags:service" will...

669ea132 12/01/2009 01:24 pm Iustin Pop

Read cluster tags in the IAllocator backend

94e05c32 11/27/2009 05:13 pm Iustin Pop

Introduce support for reading the cluster tags

While these are not actually populated from the backends, and all the
programs ignore them, this patch contains the changes in the function
types required.

0f15cc76 11/17/2009 11:44 am Iustin Pop

Add a command-line option to filter exclusion tags

Since we don't want all instance tags to be used for exclusion, we add a
command line option to filter on these. Since the iallocator protocol
cannot accept command line options, currently it's not possible to...

ce0392e6 10/21/2009 02:06 pm Iustin Pop

Some cleanup of Loader.mergeData

This doesn't need to be a monadic function, let's make it a simpler one.

a5f8dcdc 10/21/2009 11:58 am Iustin Pop

hbal: ignore unknown instance in dynload file

Since the utilisation file might be generated at a different time from
the hbal run, and instances could dissapear in the meantime, it's better
to simply ignore unknown instances rather than abort.

e7724ccc 10/19/2009 01:08 am Iustin Pop

Change the Container.findByName function

This patch changes the signature and implementation of the function;
returning the item makes more sense (saves a lookup later again in the
container, and applying idx is cheap), and the previous implementation
was ugly.

aa8d2e71 10/16/2009 04:59 pm Iustin Pop

Add loading and processing of utilisation data

This patch adds loading and processing the utilisation data during
instance moves. While the data is not yet used, it is correctly modified
by instance changes between nodes.

hbal has the new ‘-U’ command line argument for this. The format of the...

a488a217 10/16/2009 02:43 pm Iustin Pop

Merge the Node.setPri and Node.addCpus functions

The latter is only used right after the former in the Loader module, and
we'll need more of this 'update not with the data of this instance'
functionality (which is different than addPri where all information must...

2060348b 10/14/2009 04:41 pm Iustin Pop

Style change: node and instance attributes

This changes from a_b to aB in all node and instance attributes, to
match the standard Haskell style. Also attributes that should have been
camel-cased but weren't were changed (e.g. plist → pList, pnode →
pNode).

e8f89bb6 09/28/2009 03:50 pm Iustin Pop

Split the exernal data loader out of CLI.hs

Currently the external data loader is in CLI.hs, which makes all
programs that need cli functionality (options, etc.) link against the
network modules (most importantly curl). This patch splits this
functionality into a new module such that (for example) hail which only...

d71d0a1d 07/07/2009 12:24 am Iustin Pop

Take the foldl out of Loader.fixNodes

Currently Loader.fixNodes is foldl' with a complicated function. It
makes more sense to take foldl' out of this function (and put it into
the caller) and let fixNodes be only this internal function.

9f6dcdea 07/06/2009 11:50 pm Iustin Pop

Fix hlint-generated warnings

This big patch cleans up the code per hlint indications. Many removals
of extra parentheses, replacements of concat . map with concabtMap,
extra dollar signs, eta reductions, etc. were performed.

The code still compiles and passes a couple of manual tests on sample...

78694255 06/12/2009 02:22 am Iustin Pop

Fix the various monomorphism warning

In a few places (e.g. tryRead or any printf call) it's a little bit hard
to add the correct type signatures, but in the it is possible to fix
these warnings (which can bite one in subtle cases).

1a82215d 06/10/2009 11:29 pm Iustin Pop

Add cpu-count-related attributes to nodes

This patch adds cpu-count related attributes to nodes:
- total cpus
- cpus in use
- ratio of virtual:physical cpus

We also set correctly the cpu values at load time, but we don't do
anything yet while moving instances around. The cpu ratio is shown in...

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.

9cf4267a 06/01/2009 12:14 pm Iustin Pop

Finish removal of unused params from PeerMap

This completes the removal started earlier byt removeing the need to
pass the number of nodes to Node.buildPeers, which is now unused.

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

Remove an unused type synonim

5a1edeb6 05/27/2009 10:53 pm Iustin Pop

Add a separate function for looking up instances

Currently we (wrongly) use lookupNode to lookup instances, just because
the name assoc list has the same type. This patch adds a separate
function for it.

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’.

e3a684c5 05/24/2009 02:43 am Iustin Pop

Remove ktn/kti from first half of loader

This patch removes the ktn/kti lists from most parts of the first half
of the loading sequence. Some remain as the [(String, Int)] is the
nicest way to lookup names and get indices back.

8472a321 05/24/2009 02:36 am Iustin Pop

Remove the ktn/kti from second half of loading

This removes the return of ktn/kti from Loader.mergeData and associated
functions.

dbd6700b 05/24/2009 02:05 am Iustin Pop

Remove some extraneous uses of ktn/kti

Since we have Node/Instance.name, we can now simplify a few constructs.

26b5d395 05/24/2009 01:47 am Iustin Pop

Strip the suffix from the names in the objects

This strips the suffix from the objects themselves, not only from the
ktn/kti vars.

b513faa1 05/24/2009 01:33 am Iustin Pop

Make IAlloc.loadData return maps

This patch makes the format of IAlloc.loadData be similar the same as
Loader.mergeData.

446d8827 05/24/2009 01:16 am Iustin Pop

Move checkData from Cluster to Loader

This moves the remaining loading function to Loader (together with its
associated support functions).

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)...

040afc35 05/22/2009 08:03 pm Iustin Pop

Rework the loader model

This big patch changes the loader model from “string data as common
format” to actual object structures as common format.

The text loading function move from Cluster.hs to a new Text.hs module,
some common functions are moved to a new Loader.hs module, and the...