Commit a7c07935 authored by Iustin Pop's avatar Iustin Pop

Update NEWS file for the 0.3.0 release

Signed-off-by: default avatarIustin Pop <iustin@google.com>
Reviewed-by: default avatarMichael Hanselmann <hansmi@google.com>
parent 0e83aed4
......@@ -2,6 +2,45 @@ Ganeti-htools release notes
===========================
Version 0.3.0 (Fri, 04 Feb 2011)
--------------------------------
A significant release that breaks compatibility with Ganeti versions
below 2.4 due to the node group changes. Only the RAPI backend can talk
to older clusters, but it is recommended to use this version only with
Ganeti 2.4.
All commands are now multi-group aware (but to various degrees), so
allocation, balancing and capacity calculation respects the group layout
and will not create “broken” instances by using nodes from different
groups.
For a regular, single-group cluster, no changes should be directly
visible to the users. A multi-group cluster however will change some
things slightly:
- hbal will require a target group to operate on (no cluster-wide
balancing yet)
- evacuation of (DRBD) instances from a node will be restricted to nodes
in the same group, as inter-group moves are not implemented yet
- capacity, while showing correct data, will not give per-group details
yet
There are other changes in this release:
- fixed a long-standing bug in hscan related to node memory data
- changed the text backend format, which unfortunately invalidates old
files
- error handling improvements, so that invalid input data reports better
where the error is
- the simulation backend changes its syntax, now it takes the allocation
policy too, and can generate multiple groups
- (internal) man page generation moved to pandoc from hand-written,
which is helpful as it can also generate HTML versions
- the balancing algorithm has been changed to work in parallel, if the
code is linked against the multi-threaded runtime; this gives a very
good speedup (~80% on 4 cores, ~60-70% of 12 cores)
Version 0.2.8 (Thu, 23 Dec 2010)
--------------------------------
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