On Wed, Aug 10, 2022, at 1:48 PM, Josef Bacik wrote:

To help narrow this down can you disable any IO controller you've got enabled
and see if you can reproduce?  If you can sysrq+w is super helpful as it'll
point us in the next direction to look.  Thanks,

I'm not following, sorry. I can boot with systemd.unified_cgroup_hierarchy=0 to make sure it's all off, but we're not using an IO cgroup controllers specifically as far as I'm aware.

-- 
Chris Murphy