LU-817 lustre-iokit: sgpdd-survey is encountering r/w errors on arrays using 2TB...

LU-817 lustre-iokit: sgpdd-survey is encountering r/w errors on arrays using 2TB drives

There are two fix/improvements in sgpdd-survey.
(1) adding --lba option to sg_readcap for large LUNs.
(2) support configurable boundadry block size between
concurrent regions per device.

Signed-off-by: Shuichi Ihara <sihara@ddn.com>
Change-Id: Ib3cdb051cf55e096919ad63a42640aaacfe511c4
Reviewed-on: http://review.whamcloud.com/1658
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Cliff White <cliffw@whamcloud.com>
Reviewed-by: Minh Diep <mdiep@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>