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Latest revisions

# Date Author Comment
a12b230c 07/01/2013 10:53 am Klaus Aehlig

hroller: option --full-evacuation

Add an option to hroller, to plan for full evacuation of the
nodes to be rebooted, i.e., also plan for replacement secondary
nodes for all instances on the node after migrating out instances
with this node as primary.

Signed-off-by: Klaus Aehlig <>...

fdbdeaa3 07/01/2013 10:53 am Klaus Aehlig

Extract a partition functional

Separate the partitionNonRedundant function in hroller into a
general functional that partitions a list of nodes according
to some clearing strategy and the specialization of moving
non-redundant instances out. In this way, we don't have to...

a947a583 07/01/2013 10:53 am Klaus Aehlig

Extract functional for greedily clearing nodes

The method clearNodes in hroller greedily clears nodes of
non-redundant instances by moving them to a different node. This patch
separates the greedy clearing algorithm from the specialization to
non-redundant instances; in this way, we don't have to duplicate code...

634a1460 07/01/2013 10:52 am Klaus Aehlig

Make hroller not consider offline nodes for evacuation

When planing on where to evacuate the non-redundant instances
of the nodes to be rebooted, it doesn't make sense to consider
offline nodes. So add this restriction to hroller.

Signed-off-by: Klaus Aehlig <>...

a8cbe1d7 07/01/2013 10:52 am Klaus Aehlig

Update comments in hroller code

hroller schedules moves of instances to have rebooted nodes
free of instances with this node as primary. Update the comments
to reflect that this move planning is for non-redundant instances
only.

Signed-off-by: Klaus Aehlig <>...

8e4230a8 07/01/2013 10:52 am Klaus Aehlig

Clarify meaning of --print-moves in hroller man page

When given the option --print-moves, hroller prints a list of
instance relocations after each reboot group. This sequential
presentation can lead to the wrong impression, that these are
all the moves to be carried out. Therefore, explicitly mention...

34ad1d7c 07/01/2013 10:52 am Klaus Aehlig

Remove obsolete TODO

Originally, hroller started as a tool for offline maintenance only.
There it made sense to warn about instances still running. By now,
default planning is to migrate instance off the nodes to be rebooted,
with options for other behavior (like pretending that all instances...

6676f007 06/28/2013 06:34 pm Klaus Aehlig

Allow customization of the chroot

As different users have different needs about the chroot, allow
customization in its build script. This is achieved as follows.
- The environment variable EXTRA_DEBIAN_PACKAGES is honored,
and the packages named there are additionally installed in...

f5263f86 06/28/2013 06:34 pm Klaus Aehlig

build_chroot: fix duplicate install

In the last change to the chroot build script, the
apt-get command 'install' was moved to the APT_INSTALL
macro; however, it was forgotten to remove it outside
the macro, causing an error, as there is no package
with name 'install'....

43ffd839 06/28/2013 04:00 pm Klaus Aehlig

build_chroot: use APT_INSTALL macro for packet installation

In this way, it is easier to change all the apt calls in the chroot.
In particular, this patch fixes the missing -y option for the installation
of the tools needed to build debian packages.

Signed-off-by: Klaus Aehlig <>...

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