On Thu, 14 Apr 2022, Paul E. McKenney wrote:
On Thu, Apr 14, 2022 at 06:09:45PM -0700, Davidlohr Bueso wrote:
No idea, however, why this would happen when using qemu as opposed to
nbd.
This one is a bit strange, no two ways about it.
In theory, vCPU preemption is a possibility. In practice, if the
RCU grace-period kthread's vCPU was preempted for so long, I would
have expected the RCU CPU stall warning to complain about starvation.
But it still might be worth tracing context switches on the underlying
hypervisor.
Right, but both cases are VMs which is what throws me off, regardless
of the zns drive. Or is this not the case, Luis?
Thanks,
Davidlohr
