The 3par driver, for both iSCSI and Fibre Channel,
that I will commit soon, needs the lockutils to ensure thread safety in
each of the driver entry points. The driver uses a single shared http
session for all of it's connections to the 3par drive array.
This is required for the driver because of the limitation on the
3par's WSAPI only supporting a very small number of open connections.
For example without this, the driver will have problems when 2 users try and
create a volume at the same time. I've discovered this in my threaded
stress test tool.