On 27 Jan 2015, at 9:57 pm, Vladislav Bogdanov bub...@hoster-ok.com wrote:
Hi,
Playing with two-week old git master on a two-node cluster I discovered that
only limited set of notify operations is performed for clone and
master-slave instances when all of them are being started/stopped.
Clones (anonymous):
* post-start
* pre-stop
M/S:
* post-start
* post-promote
* pre-demote
* pre-stop
According to Pacemaker Explained there should be more:
* pre-start
There wouldn't be anyone to notify if they're all stopped
* pre-promote
* post-demote
These two I'm surprised about. Possibly they're going on the same logic as
pre-start and post-stop.
* post-stop
There wouldn't be anyone to notify if they're all stopping
Some notifications (pre-stop for my clone and pre-demote for ms) are repeated
twice (due to transition aborts or fact that multiple instances are
stopping/demoting?) but that has minor impact for me.
I tested that by setting stop-all-resources property to 'true' and 'false'.
On the other hand, if I put one node with running instances into standby and
then into online states, I see all missing notifications.
I that intended that actions above are not performed when all instances are
handled simultaneously?
One more question about 'post' notifications: Are they send to RA right
after corresponding main action is finished or they wait in the transition
queue? In other words, is it possible to get post-stop notification that the
foreign instance is stopped during the time the stop action on the local
instance is still running?
The post-X notifications are sent after all X actions for the clone have
completed.
Best,
Vladislav
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