obdfilter-survey disk case test only supports maximum 1M IO data.
Signed-off-by: Bobi Jam <bobijam@whamcloud.com>
Change-Id: Id974a3cacf50ffe760771224a285b0b7cd308840
Reviewed-on: http://review.whamcloud.com/1741
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Lai Siyao <laisiyao@whamcloud.com>
Reviewed-by: Yu Jian <yujian@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>