On 06/01/2016 06:14 AM, Ulrich Windl wrote:
> Hello!
>
> I have a question:
> Inspecting the XML of our cluster, I noticed that there are several IDs
> ending with "last_0". So I wondered:
> It seems those IDs are generated for start and stop operations, and I
> discovered one case where an ID is duplicate (the status is for different
> nodes, and one is a start operation, while the other is a stop
> operationhowever).
The "*_last_*" IDs simply refer to the last (= most recently executed)
operation :)
Those IDs are not directly used by the cluster; they're just used to
store the most recent operation in the CIB.
> Background: I wrote some program that extarcts the runtimes of operations
> from the CIB, like this:
> prm_r00_fs_last_0 13464 stop
> prm_r00_fs_last_0 61 start
> prm_r00_fs_monitor_30 34 monitor
> prm_r00_fs_monitor_30 43 monitor
>
> The first word is the "id" attribute, the second is the "exec-time"
> attribute, and the last one (added to help myself out of confusion) is the
> "operation" attribute. Values are converted to milliseconds.
>
> Is the name of the id intentional, or is it some mistake?
>
> And another question: For an operation with "start-delay" it seems the start
> delay is simple added to the queue time (as if the operation was waiting that
> long). Is that intentional?
Yes. The operation is queued when it is received, and if it has a start
delay, a timer is set to execute it at a later time. So the delay
happens while the operation is queued.
> Another program tried to extract queue and execution times for operations,
> and the sorted result looks like this then:
>
> 1 27 prm_nfs_home_exp_last_0 monitor
> 1 39 prm_q10_ip_2_monitor_6 monitor
> 1 42 prm_e10_ip_2_monitor_6 monitor
> 1 58 prm_s01_ip_last_0 stop
> 1 74 prm_nfs_cbw_trans_exp_last_0 start
> 30001 1180 prm_stonith_sbd_monitor_18 monitor
> 30001 178 prm_c11_ascs_ers_monitor_6 monitor
> 30002 165 prm_c11_ascs_ers_monitor_45000 monitor
>
> Regards,
> Ulrich
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