Adrian Chapela wrote:
Dominik Klein escribió:
Hi
during the writeup of ScoreCalculation on the wiki, I noticed
something strange. It'd be nice to know whether this is on purpose or
a bug.
Test setup is:
2 nodes, 1 drbd device, a group of 3 resource which are to run on top
of the drbd master.
resource_stickiness is set to 100
If I use a colocation constraint with a score of infinity, the master
receives a stickiness bonus of 600.
If I change the colocation score to a numeric value (I tested 1000 and
5000), the bonus is reduced to 400.
I could explain the 600 as 2 * num_resources * stickiness, but I
cannot see where those 400 come from.
Is this a bug or (why?) is this intended?
I think there is a BUG related with master_slave resources. I have
opened this bug:
http://developerbugs.linux-foundation.org/show_bug.cgi?id=1852 and today
I have no response... :(
Is this which are you talking about ?
No, but I experienced that as well. I don't know why it happens, but I
think you can get around it.
Please try this:
<!-- make clone instance :0 run on node1 -->
<rsc_location id="rscloc-ms-drbd1:0" rsc="drbd1:0">
<rule id="rscloc-ms-drbd1:0-rule1" score="500">
<expression id="rscloc-ms-drbd1:0-rule1-expr"
attribute="#uname" operation="eq" value="node1"/>
</rule>
<rule id="rscloc-ms-drbd1:0-rule2" score="-500">
<expression id="rscloc-ms-drbd1:0-rule2-expr"
attribute="#uname" operation="eq" value="node2"/>
</rule>
</rsc_location>
<!-- make clone instance :1 run on node2 -->
<rsc_location id="rscloc-ms-drbd1:1" rsc="drbd1:1">
<rule id="rscloc-ms-drbd1:1-rule1" score="500">
<expression id="rscloc-ms-drbd1:1-rule1-expr"
attribute="#uname" operation="eq" value="node2"/>
</rule>
<rule id="rscloc-ms-drbd1:1-rule2" score="-500">
<expression id="rscloc-ms-drbd1:1-rule2-expr"
attribute="#uname" operation="eq" value="node1"/>
</rule>
</rsc_location>
Solved that problem for me.
Regards
Dominik
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