HV_VSS_DAEMON(8) FreeBSD System Manager's Manual HV_VSS_DAEMON(8)
NAME
hv_vss_daemon - Hyper-V Volume Shadow Copy Service Daemon
SYNOPSIS
hv_vss_daemon [-dn]
DESCRIPTION
The hv_vss_daemon daemon provides the ability to freeze and thaw the file
system for FreeBSD guest partitions running on Hyper-V.
Hyper-V allows administrators to backup or restore the FreeBSD guest
partition. Administrators can use Windows Powershell scripts to backup
or restore the FreeBSD VM.
The hv_vss_daemon accepts file system freeze and thaw requests from the
hv_utils(4) driver and performs the actual file-system operation.
The file system freeze and thaw functionality is useful when the Hyper-V
host wants to do live backup of FreeBSD guest. Hyper-V host sends file
system freezing request to hv_vss_daemon which conducts the real
operation. After successfully freezing file system, Hyper-V host takes a
snapshot of the VM. In the future, Hyper-V host can restore the FreeBSD
VM through that snapshot.
The options are as follows:
-d Run as regular process instead of a daemon for debugging purpose.
-n Generate debugging output.
SEE ALSO
hv_vmbus(4), hv_utils(4), hv_netvsc(4), hv_storvsc(4), hv_kvp(4)
HISTORY
The daemon was introduced in October 2016 and developed by Microsoft
Corp.
AUTHORS
FreeBSD support for hv_vss_daemon was first added by Microsoft BSD
Integration Services Team <
[email protected]>.
FreeBSD 14.1-RELEASE-p8 October 12, 2016 FreeBSD 14.1-RELEASE-p8