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Add cpu ratio to cluster calculation
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 doanything yet while moving instances around. The cpu ratio is shown in...
Fix the ReplacePrimary instance move
During a replace-primary instance move, on the real cluster the instanceis temporarily started on the secondary, and as such we must check thatthe secondary node can hold it for this duration. Currently the codedoes not, and depending on cluster scoring it will put instances on such...
Rework the tryAlloc/tryReloc functions
Currently tryAlloc/tryReloc do not return the new instance, as this isnot needed for IAllocator alloc/reloc requests. However, for computingthe space, the new instance is useful, so we modify these functions toreturn this information too....
Add copyright/license information
This doc-patch adds copyright and license information to (hopefully) allneeded files.
Small whitespace change
Move some alloc functions from hail into Cluster
These are generic enough to be used from multiple places, they belongbetter in Cluster.hs than in the hail source.
Cleanup an old function
Also replace a type with its synonim.
Lots of documentation updates
This patch does only doc build changes, doc changes and function movearound (for more logical documentation). It should have no impact at allon the code.
Remove an unused type synonim
Add type synonyms for the node/instance indices
This is a first step towards full datatype renaming. That requires morechanges, so at first we only want to document clearly what is a nodeindex, what is an instance index, and what is a plain Int.
Change the module import hierarchy
This patch makes the Types module a base module, and Node/Instance onesimport it, from the previous (opposite) situation. This will allow inthe future to use newtypes for the index and name types.
hail: Implement non-mirrored instance allocation
This patch implements non-mirrored instance allocation, by allocating assecondary node “noSecondary”.
Implement hail allocate (for 2-node requests)
This patch implements allocate for two node requests. One node requestscan be done as soon as we have a valid allocateOn function for singlenodes.
Working implementation if relocate
This patch completes the implementation of hail relocate. It maps allvalid destination nodes through a ReplaceSecondary IMove, filters outthe failed relocations, computes the resulting scores and picks thelowest one.
Remove most uses of ktn/kti
This patch removes all uses of ktn/kti from the past-loader stages.
Remove some extraneous uses of ktn/kti
Since we have Node/Instance.name, we can now simplify a few constructs.
Move checkData from Cluster to Loader
This moves the remaining loading function to Loader (together with itsassociated support functions).
More code reorganizations
This new big patch does a couple of more cleanups in the loading of datachapter: - 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)...
Rework the loader model
This big patch changes the loader model from “string data as commonformat” 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...
Experimental support for non-redundant instances
This patch adds experimental support to hbal for non-redundant instances(i.e. instances with only one node). They are currently handled asnon-moveable, and as such the algorithm simply ignores them.
Supports needs to be added when reading from RAPI via hscan, and...
Small doc addition
Introduce nice errors on invalid input fields
This patch switches from plain read to a wrapper over readsPrec thatreturns better error messages than the buildin 'Prelude: no parse'.
Split node/instance parsing into functions
This allows easy checking for valid format of the input data (row-wise).
Add initial validation checks in Cluster.loadData
This patch converts loadTabular and loadData to a monadic form, thusallowing meaningful error messages from the node/instance load routines.
Convert Cluster.loadData to Result return
This patch changes Cluster.loadData to return a Result, instead ofdirectly the values; this will allow us to return meaningful errorvalues (e.g. when an instances lives on unknown node) rather than simplyabort. Currently the result is always an Ok, the actual signalling of...
Don't consider offline nodes as N+1 failed
This is just a cosmetic (I hope) change; the nodes shouldn't be usedanyway, and we only correct the display message.
Add support for 'offline' nodes
This patch drops compatiblity with Ganeti 1.2 and adds support foroffline nodes in the cluster. When reading from RAPI, the drained nodesare considered offline so that we don't allocate on them too.
hbal: Add a new min-score option
This new parameter causes the algorithm to finish (or even not start atall) if we reach/have a score better than it.
hbal: Change hardcoded tests to monadic composition
In some case we manually do “if isNothing … then Nothing else …”, whichcan be very easily replaced with a monadic construct in the Maybe monad.
Increase allowed missing memory to 512MB
Since Xen seems to “steal” some amounts of memory (depending on totalnode memory), we increase the maximum allowed missing memory to 512MB,based on gathered data from multiple machines.
Implement writing the command list to a script
This patch adds support in hbal for writing the command list to a shellscript, with error checking and allowing for early exit.
Add checks for missing disk space
This small patch adds disk space checks to the Cluster.checkDatafunction, and simplifies a little the warning messages.
Fix interaction between down instances and nodes
If an instance is down, it's memory is not reflected in the node usedmemory, and thus the node free memory is higher than the actual value.This patch deducts the memory for such instances from the node free...
Add a new instance field denoting run status
This patch modifies Rapi, the Cluster.loadData and hscan serialization to loadand save the instance run status. At instance level, we add both a booleanfield denoting the true/false run status, and a string field which holds the...
Show the x_mem/i_mem in node list
This patch adds checking of cluster data in the binaries and display ofnode's x_mem/i_mem in the node list.
Add functions to check and fix cluster data
This patch adds a checkData function which goes over the node list and computesthe unaccounted memory, returning a list of warning messages (if any) and theupdate nodes.
Add node memory field to Node objects
This patch adds a new n_mem field to the node objects, and implementsread/save/show support for it. The field is not currently used (exceptin the node list) but will be used for checking data consistency andinstance up/down status.
Pass actual types to node/instance constructors
This patch changes the parameters passed to the node and instanceconstructors from generic Strings (which are then parsed via “read”) tothe actual used types, by converting them earlier in Cluster.loadData.
Some small changes in preparation for hscan
This patch does some small changes: - fixes a comment - export more node functions (unneeded now, but hscan will use them) - fixes Makefile rule for building the programs
Add a separate type for the [(Int, String)] list
This is added for better readability, since this is very often used indeclarations.
Handle correctly offline nodes in cluster scoring
This patch changes two things with regard to offline nodes: - first, it only calculates the various coefficients across online nodes - second, it adds a new score denoting the percentage of instances...
Show offline nodes in the node status list
This patch adds a new ‘-’ flag for the node status which denotes offlinenodes.
Restrict move list based on offline node status
This patch changes the Cluster.checkInstanceMove function to restrictthe target move list based on which nodes are online.
Some updates to the apidoc rules
Introduce a namespace for the modules
The modules are moved from the ‘top’ namespace to ‘Ganeti.HTools’, incompliance with standard practices.