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HYPER-V(4)	       FreeBSD Kernel Interfaces Manual		    HYPER-V(4)

NAME
     hv_kvp -- Hyper-V Key Value Pair Driver

SYNOPSIS
     To	compile	this driver into the kernel, place the following lines in the
     system kernel configuration file:

	   device hyperv

DESCRIPTION
     The hv_kvp	driver provides	the ability to store, retrieve,	modify and
     delete key	value pairs for	FreeBSD	guest partitions running on Hyper-V.
     Hyper-V allows administrators to store custom metadata in the form	of key
     value pairs inside	the FreeBSD guest partition.  Administrators can use
     Windows Powershell	scripts	to add,	read, modify and delete	such key value
     pairs.

     The driver	is bare	bones and merely forwards requests to its counterpart
     user mode daemon, hv_kvp_daemon(8).  The daemon maintains pools of	key
     value pairs and does the actual metadata management.

     The same driver and daemon	combination are	also used to set and get IP
     addresses from a FreeBSD guest.

     The set functionality is particularly useful when the FreeBSD guest is
     assigned a	static IP address and is failed	over from one Hyper-V host to
     another.  After failover, Hyper-V uses the	set IP functionality to	auto-
     matically update the FreeBSD guest's IP address to	its original static
     value.

     On	the other hand,	the get	IP functionality is used to update the guest
     IP	address	in the Hyper-V management console window.

SEE ALSO
     hv_vmbus(4), hv_utils(4), hv_netvsc(4), hv_storvsc(4),
     hv_ata_pci_disengage(4), hv_kvp_daemon(8)

HISTORY
     Support for hv_kvp	first appeared in FreeBSD 10.0.	 The driver was	devel-
     oped through a joint effort between Citrix	Incorporated, Microsoft	Corpo-
     ration and	Network	Appliance Incorporated.

AUTHORS
     FreeBSD support for hv_kvp	was first added	by Microsoft BSD Integration
     Services Team <bsdic@microsoft.com>.

FreeBSD	10.3		      September	10, 2013		  FreeBSD 10.3

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO | HISTORY | AUTHORS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=hv_kvp&sektion=4&manpath=FreeBSD+10.3-RELEASE+and+Ports>

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