title: FIO : How can we do overlapped IO using FIO switches?
body: <p>Can someone share how do we build a IO workload that performs IO on same partition in overlapped fashion? i.e, Lets say, 1 job doing 4k IO on disk partition /dev/sda start=0k to end=1GB.</p>
  <p>So, Using FIO, can we do something like, 1 WL doing 4k write in the first pass, and offset getting incremented by 3k so that last 1k gets overlapped on the next 4k write.</p>
  <p>Please let know if this is doable via FIO. Thank you.</p>