id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
2059	Increase file reliability against group failure	markberger		"Servers of happiness improves share distribution and guarantees a file can be recovered for up to n - h node failures. However, if a group of nodes fail, servers of happiness makes no guarantees. If I lose all the machines in my house, I have no way of knowing whether my other nodes have enough shares to reconstruct all my data.

One way of fixing this is to group a maximum of n - h nodes in a single location, but I think that solution is silly because I might not want to increase my n or lower my h to meet the requirement. Instead, I should be able to organize storage nodes into failure groups and guarantee that a subset of those groups can reconstruct the file. Given a set of groups with g cardinality, any subset with a cardinality of g - 1 must have k shares.

This is somewhat related to #467, but I think this ticket serves a different purpose."	enhancement	new	normal	undecided	code-peerselection	1.10.0		preservation servers-of-happiness