Verify doesn't really work on mixed read/write workloads, so warn

Unless the file is pre-populated, this cannot work. So warn the user
of such a bad construct, since the warning he/she receives from fio
only tells you about a verification error (which, technically, is what
is happening).

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
1 file changed