[ClusterLabs] Discovering corosync-blackbox

Ulrich Windl Ulrich.Windl at rz.uni-regensburg.de
Wed May 13 09:22:04 CEST 2015


Hi!

I just discovered corosync-blackbox, a too to find out what's going on, obviously ;-)
Unfortunately the time stamps with seconds resolution seem to bit a bit like a joke, and supplying the data seems very redundant to me. Consider this example:
# corosync-blackbox | grep ringid
...
rec=[867124327] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc116
rec=[867124335] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc118
rec=[867124385] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc122
rec=[867124426] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc12a
rec=[867124476] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc134
rec=[867124484] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc136
rec=[867124550] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc143
rec=[867124616] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc150
rec=[867124625] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc152
rec=[867124671] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc15b
rec=[867124718] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc164
rec=[867124727] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc166
rec=[867124792] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc173
rec=[867124852] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc17f
rec=[867124860] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc181
rec=[867124920] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc18d
rec=[867124968] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc197
rec=[867124977] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc199
rec=[867125039] time=[2015-05-13 08:47:19] Tracing(1) Messsage=Received ringid(172.20.16.1:2512) seq a0dc1a5
...

More questions:
"2512" is not the port configured; what is it? And should the "seq" be somewhat "gapless"? Or is the whole blackbox lossy?

What's the meaning of "Log Message=Can't store blackbox file: Success (0)"?


Regards,
Ulrich






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