[Gluster-devel] [Brick-Multiplexing] Failure to create .trashcan in all bricks per node

[Jiffin Tony Thottan]

Following bugs were reported against trash translator in a brick 
multiplexing enabled environment:

1447389 <https://bugzilla.redhat.com/show_bug.cgi?id=1447389>
1447390 <https://bugzilla.redhat.com/show_bug.cgi?id=1447390>
1447392 <https://bugzilla.redhat.com/show_bug.cgi?id=1447392>

In all the above cases trash directory, namely .trashcan, was being 
created only on one brick per node.
Trash directory is usually created within notify() inside trash 
translator on receiving CHILD_UP event
from posix translator. [trash.c:2367]. This CHILD_UP event is sent by 
posix translator on receiving PARENT_UP.

When brick multiplexing is enabled it seems that notify() is invoked 
only on the first brick which follows normal
path, but not in other bricks. On further debugging, we could see that 
in glusterfs_graph_attach(), apart from
graph preparation and initialization it lacks xlator_notify()  and 
parent_up calls as in normal cases.

Can you please shed some light on how we can move forward with these bugs?

Also thanks Atin and Nithya for help in debugging above issues.

Regards,
Jiffin

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