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HVS(4) Device Drivers Manual HVS(4)

hvsHyper-V virtual disk

hvs* at hyperv?

The hvs driver provides support for a Storage Virtual Service Client (StorVSC), a virtual disk interface that relays device requests to the Virtual Service Provider (VSP) in the management operating system via the VMBus.

StorVSC provides a unified interface to emulated IDE and SCSI devices.

autoconf(4), hyperv(4), intro(4)

The hvs driver first appeared in OpenBSD 6.2.

The hvs driver was written by Mike Belopuhov <> based on the FreeBSD driver by the Microsoft BSD Integration Services Team <>.

June 14, 2017 OpenBSD-current