On Thu, Dec 9, 2021 at 9:56 AM Arkadiusz Miśkiewicz <a.miskiewicz@xxxxxxxxx> wrote: > > W dniu 08.12.2021 o 19:54, Chris Murphy pisze: > > Hi, > > > > I'm trying to help progress a kernel regression hitting Fedora > > infrastructure in which dozens of VMs run concurrently to execute QA > > testing. The problem doesn't happen immediately, but all the VM's get > > stuck and then any new process also gets stuck, so extracting > > information from the system has been difficult and there's not a lot > > to go on, but this is what I've got so far. > > Does qemu there have this fix? > > https://github.com/qemu/qemu/commit/cc071629539dc1f303175a7e2d4ab854c0a8b20f > > block: introduce max_hw_iov for use in scsi-generic OK this worker is running a version of qemu with this fix backported now, and the problem still happens. I'll try to get answers to Dave's other questions (I don't have direct access to this system, so there's a suboptimal relay happening in the conversation). -- Chris Murphy