From 92902e915e6f2a6906508bd23d90e2dcf4c539b3 Mon Sep 17 00:00:00 2001
From: Iustin Pop <iustin@google.com>
Date: Thu, 17 Mar 2011 18:24:35 +0100
Subject: [PATCH] Move htools-ganeti 2.3 design doc to doc/
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I didn't know where to put in the TOC, so I added it after the ganeti
2.3 design doc.
Also, it seems that Sphinx is a bit limited in its list nesting
(compared to Pandoc), so I had to rework a bit the indentation (it
still doesn't generate good output, butβ¦).
Signed-off-by: Iustin Pop <iustin@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>
---
Makefile.am | 1 +
.../design-htools-2.3.rst | 35 ++++++++++---------
doc/index.rst | 1 +
3 files changed, 20 insertions(+), 17 deletions(-)
rename htools/doc/design-ganeti-2.3.rst => doc/design-htools-2.3.rst (92%)
diff --git a/Makefile.am b/Makefile.am
index 0fbad8a1f..490107ec1 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -240,6 +240,7 @@ docrst = \
doc/design-2.1.rst \
doc/design-2.2.rst \
doc/design-2.3.rst \
+ doc/design-htools-2.3.rst \
doc/design-2.4.rst \
doc/design-draft.rst \
doc/design-oob.rst \
diff --git a/htools/doc/design-ganeti-2.3.rst b/doc/design-htools-2.3.rst
similarity index 92%
rename from htools/doc/design-ganeti-2.3.rst
rename to doc/design-htools-2.3.rst
index a6beabd44..1e5cd3bbf 100644
--- a/htools/doc/design-ganeti-2.3.rst
+++ b/doc/design-htools-2.3.rst
@@ -213,23 +213,23 @@ Algorithm:
(i.e. no other group sharing at least one storage method)
#. determine list of healthy versus unhealthy groups:
- #. a group which contains offline nodes still hosting instances is
- definitely not healthy
- #. a group which has nodes failing N+1 is βweaklyβ unhealthy
+ #. a group which contains offline nodes still hosting instances is
+ definitely not healthy
+ #. a group which has nodes failing N+1 is βweaklyβ unhealthy
#. if either list is empty, exit (no work to do, or no way to fix problems)
#. for each unhealthy group:
- #. compute the instances that are causing the problems: all
- instances living on offline nodes, all instances living as
- secondary on N+1 failing nodes, all instances living as primaries
- on N+1 failing nodes (in this order)
- #. remove instances, one by one, until the source group is healthy
- again
- #. try to run a standard allocation procedure for each instance on
- all potential groups in its partition
- #. if all instances were relocated successfully, it means we have a
- solution for repairing the original group
+ #. compute the instances that are causing the problems: all
+ instances living on offline nodes, all instances living as
+ secondary on N+1 failing nodes, all instances living as primaries
+ on N+1 failing nodes (in this order)
+ #. remove instances, one by one, until the source group is healthy
+ again
+ #. try to run a standard allocation procedure for each instance on
+ all potential groups in its partition
+ #. if all instances were relocated successfully, it means we have a
+ solution for repairing the original group
Compression
^^^^^^^^^^^
@@ -246,10 +246,11 @@ The algorithm for βcompressingβ the super cluster is as follows:
#. computer per-group used and free *(memory, disk, cpu)*
#. select candidate groups for evacuation:
- #. they must be connected to other groups via a common storage type
- and pool
- #. they must have fewer used resources than the global free
- resources (minus their own free resources)
+ #. they must be connected to other groups via a common storage type
+ and pool
+ #. they must have fewer used resources than the global free
+ resources (minus their own free resources)
+
#. for each of these groups, try to relocate all its instances to
connected peer groups
#. report the list of groups that could be evacuated, or if instructed
diff --git a/doc/index.rst b/doc/index.rst
index e3a3a8f3c..75d9fd63d 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -19,6 +19,7 @@ Contents:
design-2.1.rst
design-2.2.rst
design-2.3.rst
+ design-htools-2.3.rst
design-2.4.rst
design-draft.rst
cluster-merge.rst
--
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