htools: add group restrictions to findBestAllocGroup
While a normal multi-group allocation doesn't need to restrict thelist of target groups beyond the unallocable status of some groups,when we relocate instances from one group to the other we need tolimit the subset of searched groups....
htools: generalise and rename availableLocalNodes
Currently this function works in the context of an instance, computingits local group nodes. We can use generalise it to take a group indexargument, so that it's not bound to an instance, and we rename it...
htools: add ChangeGroup to IAllocator types/loader
This patch updates the types and functions in IAllocator.hs andLoader.hs to the new design changes (elimination of multi-relocatemode and replacement with change-group).
It also removes an extra re-export of EvacMode from Loader.hs....
htools: split tryMGAlloc in two
Currently, this function does both identify the best group for aninstance, and format the results (partially). The former functionalityis useful in other contexts too, so let's split the function in two.
Signed-off-by: Iustin Pop <iustin@google.com>...
htools: add node-evacuation of DRBD all nodes
This is much more complicated than either change primary (which istrivial) and change secondary (which is also simple).
The main strategy is:
- choose a new secondary (that will become the final primary) and...
htools: small optimisation in Cluster.collapseFailures
This makes fewer temporary data structures, and thus brings a bit ofimprovement in total runtime.
Signed-off-by: Iustin Pop <iustin@google.com>Reviewed-by: Guido Trotter <ultrotter@google.com>
htools: add optional limit to allocation count
Currently, the tieredAlloc/iterateAlloc functions will not returnuntil the allocation fails; this means unit-testing theirfunctionality (e.g. that an instance can be allocated) is slow, sincethey will allocate all possible instances....
htools: add node-evacuation of DRBD secondaries
htools: rework compCV so that we can use [Node] too
In some cases, we have a [Node.Node] list, instead of a Node.Liststructure. Instead of converting [Node.Node] to the latter, let'srework compCV and add a compCVNodes such that we skip this(potentially expensive) step....
Fix htool unittest failure due to invalid prereqs
Currently, the test prop_Node_rMem does some reserved memory checks onnodes, and for the test to work correctly (can add more instances) werequire that the node free memory is greater than zero via aprerequisite....
View revisions
Also available in: Atom