Previously iSCSI LUN hotplug had critical bugs and we had no choice but
accept submitting new tasks as late as possible. We fixed the bug now and
we can stop submitting new task immediately after starting LUN removal
process.
By this change, no task is submitted to the LUN and previously queued
tasks have no chance to be kicked. Hence we execute them instead after
stopping new task submission.
This change simplifies LUN hotplug process and reproduce LUN hotplug
issues solidly if we don't have the fix.
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: I9a33e6a217978b0863d15aaff3d35880dbdccfd4
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/473596
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
db91cfe045