Comment # 11 on bug 1099494 from Michael Andres

Messages '[PLUGIN] PluginScript.cc(~PluginDumpStderr):' simply log the lines a
plugin writes to it's stderr. So the message 

> ! ERROR:root:  org.freedesktop.DBus.Error.NoReply: Did not receive 
> a reply. Possible causes include: the remote application did not send 
> a reply, the message bus security policy blocked the reply, the reply 
> timeout expired, or the network connection was broken.

was written by snapper.py not by libzypp.



zypp timeout: According to the log:

> snapper.py ->send PluginFrame[COMMITEND](0){370884}
> THROW:    Not ready to read within timeout.

It's true that snapper.py does not acknowledge the receipt of the COMMITEND
message (within 30 sec.). Due to this zypp stops serving the plugin.

> snapper.py ->send PluginFrame[_DISCONNECT](0){0}
> snapper.py <-PluginFrame[ACK](0){0}
> snapper.py -> [0] 

Zypp sends a _DISCONNECT to inform the plugin and the plugin acknowledges the
receipt. If _DISCONNECT is acknowledged, zypp does  not  kill the script, but
leaves it running in the background [1]. 

AFAICS the plugin is not killed by libzypp. OTOH it is not able to delay the
transaction until it has completed (but that's actually intended).
So what to change?


[1] https://doc.opensuse.org/projects/libzypp/HEAD/zypp-plugins.html