Comment 1 for bug 1293701

This is a UX problem really: when a bulk action fails on multiple nodes, each failure might be for a different reason. Since we cannot simply aggregate all the messages in one giant message (because it would be a bit unreadable and potentially very long) we display a summary message that is not very informative.
I agree that we should improve this. Here are a few possibilities:
- Since the number of possible failures is limited, we could regroup the failures by type and display something like "The action 'xx' could not be performed on 3 nodes: on 2 nodes, it couldn't be performed because XYZ, on 1 node, because ABC. "
- We could simply aggregate all the failures and crop the resulting message; plus a tooltip to show the complete message.