Hi Hannes, Damien, and Dmitry, This patch series introduces zoned_host_device for passing through host zoned storage devices.
How can one host zoned storage device be split up for multiple VMs? For NVMe it may be possible to allocate multiple Namespaces on the device using management tools. Then Linux sees individual /dev/nvme0nX block device nodes and QEMU uses them with zoned_host_device. For other types of devices, can dm-linear create separate device-mapper targets? How do max open/active zones, etc work when multiple untrusted users are sharing a device? I'm asking because splitting up a single physical device for multiple VMs is a common virtualization use case that we should document. Thanks, Stefan
