$FreeBSD: releng/11.0/share/man/man4/hv_utils.4 276259 2014-12-26 22:30:18Z bapt $ Copyright (c) 2012 Microsoft Corp. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, th...
NAMEhv_utils - Hyper-V Utilities Driver
SYNOPSISTo compile this driver into the kernel, place the following lines in the system kernel configuration file:
DESCRIPTIONThe sysctl Cm net.inet.tcp.syncookies driver provides time keeping, shutdown and heartbeat functionality for Fx guest partitions running on Hyper-V. Hyper-V is a hypervisor-based virtualization technology from Microsoft. The sysctl Cm net.inet.tcp.syncookies 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 Fx can be shut down from Hyper-V Manager console by using the Qq Shut down command.
(c) Heartbeat: This feature allows the virtualization server to detect whether the guest partition is running and responsive.