[Lustre-devel] some thoughts on COS

[Nikita Danilov]

Alex Zhuravlev writes:
 > Hi,
 > 
 > all access to an object can be broken into 3 phases:
 > 1) lock is acquired and used to modify data, no concurrent
 >     access as data is inconsistent
 > 2) data is consistent, but uncommitted; thus same client can
 >     access data, others can not

Other clients cannot read uncommitted data, but they can safely
overwrite them. Do we care about such use cases?

 > 3) all clients can access data

Nikita.