Wednesday, 2016-01-27

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openstackgerrityinwei proposed openstack/smaug: Basic design doc for Protection Service  https://review.openstack.org/26145502:08
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openstackgerritchenying proposed openstack/smaug: Introduce oslo.versionedobjects to smaug  https://review.openstack.org/27118907:58
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openstackgerritchenying proposed openstack/smaug: Introduce oslo.versionedobjects to smaug  https://review.openstack.org/27118909:46
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yinweimacsaggi?12:42
yinweimaccan i ask what's the difference between get_prev_task and get_post_task?12:43
saggithe former is when you visit the node and post when you leave12:44
saggiyinweimac: ^^^^^12:44
yinweimachmm, per my understanding, on entering the node, we usually make task flow of this node12:45
yinweimacon leaving the node, which means we have visited all of its children, then we build dependency between its own task flow to the task flow returned by its chidlren nodes.12:46
yinweimacdoes get_post_task involve making new tasks?12:47
yinweimacI mean, is it possible that get_post_task needs children tasks as its input?12:51
yinweimacsay, for restoration, vm node can build vm_task, and its children vol1 node could build vol1_task12:52
yinweimacwhen the node is leaving, the vm node needs create an attach_vol_task and compose the 3 as vm_task, vol1_task, attach_vol_task->vm_task, attach_vol_task->vm_task12:53
yinweimacit seems to me that only one function of get_task_flow(children_task_flow) would be enough.12:54
yinweimaci don't see the difference between enter node and leave node12:56
yinweimaconly the dependency on the tasks matters. whether you create task before or after the children node traverse doesn't matter, right?12:57
yinweimacPls. let me know your idea when you're available.12:57
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openstackgerritSaggi Mizrahi proposed openstack/smaug: Pluggable protection provider doc  https://review.openstack.org/26226416:56

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