Crash recovery for user-space block drivers

Posted Sep 5, 2022 15:27 UTC (Mon) by pturmel (guest, #95781)
Parent article: Crash recovery for user-space block drivers

I'm looking forward to more of this, largely because I recently had my antipathy to userspace drivers busted rather convincingly by OpenVSwitch.

I often set up custom bridge-vlan-VM network environments for my laboratory of industrial hardware (mostly Allen-Bradley and Omron products). Until recently, it was done with native Linux bridges and native Linux vlans.

Then I discovered that KVM can tap into an OpenVSwitch bridge with a specified vlan tag. Greatly simplified the rats' nest of configurations I've been switching around for various simulations.

But some sibling VMs on the same infrastructure had their network performance noticeably improve. I didn't think to benchmark it all, but I'm very happy with the results.

Bring on more userspace drivers, thank you.