Description of problem: A new seek() FOP is in the process of getting added to Gluster. Support for striping is not part of the initial patch set. There may not be a real need to implement seek() for stripe, strip is being replaced by sharding. More details about SEEK_DATA/SEEK_HOLE can be found in 'man 2 lseek'.
Not planning to work any more on the component: https://lists.gluster.org/pipermail/gluster-users/2018-July/034400.html