[Gluster-devel] Mount hangs because of connection delays

[Pranith Kumar Karampuri]

hi,
     When glusterfs mount process is coming up all cluster xlators wait 
for at least one event from all the children before propagating the 
status upwards. Sometimes client xlator takes upto 2 minutes to 
propogate this 
event(https://bugzilla.redhat.com/show_bug.cgi?id=1054694#c0) Due to 
this xavi implemented timer in ec notify where we treat a child as down 
if it doesn't come up in 10 seconds. Similar patch went up for review 
@http://review.gluster.org/#/c/11113 for afr. Kritika raised an 
interesting point in the review that all cluster xlators need to have 
this logic for the mount to not hang, and the correct place to fix it 
would be client xlator itself. i.e. add the timer logic in client 
xlator. Which seems like a better approach. I just want to take inputs 
from everyone before we go ahead in that direction.
i.e. on PARENT_UP in client xlator it will start a timer and if no rpc 
notification is received in that timeout it treats the client xlator as 
down.

Pranith