NAME¶
hv_utils
—
Hyper-V Utilities Driver
SYNOPSIS¶
To compile this driver into the kernel, place the following lines in the system
kernel configuration file:
device hyperv
DESCRIPTION¶
The
hv_utils
driver provides time keeping,
shutdown and heartbeat functionality for
FreeBSD guest
partitions running on Hyper-V. Hyper-V is a hypervisor-based virtualization
technology from Microsoft. The
hv_utils
driver is one of the core drivers required to be present in guest partitions
running on Hyper-V. This driver provides the following functionalities to
guest partitions:
(a) Time Keeping: The clock inside the guest partition will remain accurate by
synchronizing to the clock on the virtualization server via Timesync service,
and with the help of the pluggable time source device.
(b) Integrated shutdown: Guest partitions running
FreeBSD can be shut down from Hyper-V Manager console
by using the “Shut down” command.
(c) Heartbeat: This feature allows the virtualization server to detect whether
the guest partition is running and responsive.
SEE ALSO¶
hv_vmbus(4),
hv_netvsc(4),
hv_storvsc(4),
hv_ata_pci_disengage(4)
HISTORY¶
Support for
hv_utils
first appeared in
FreeBSD 10.0. The driver was developed through a joint
effort between Citrix Incorporated, Microsoft Corporation, and Network
Appliance Incorporated.
AUTHORS¶
FreeBSD support for
hv_utils
was first added by
Microsoft BSD Integration Services Team
⟨bsdic@microsoft.com⟩.