iohyve(8) FreeBSD System Manager's Manual iohyve(8)NAMEiohyve(8) - bhyve manager/launcher v0.7.3 "Bear in a Datacenter Edi‐
tion"
SYNOPSISiohyve version
iohyve setup pool=[poolname] kmod=[0/1] net=[interface]
iohyve list
iohyve info [-d]
iohyve isolist
iohyve fwlist
iohyve fetch [URL]
iohyve cpiso [path]
iohyve renameiso [ISO] [newname]
iohyve rmiso [ISO]
iohyve fetchfw [URL]
iohyve cpfw [path]
iohyve renamefw [firmware] [newname]
iohyve rmfw [firmware]
iohyve create [name] [size] [[pool]]
iohyve install [name] [ISO]
iohyve load [name]
iohyve boot [name] [ISO]
iohyve start [name] [-a | -s]
iohyve stop [name]
iohyve forcekill [name]
iohyve scram
iohyve destroy [name]
iohyve rename [name] [newname]
iohyve delete [name]
iohyve set [name] [prop1=value] [prop2=value]...
iohyve get [name] [prop]
iohyve rmpci [name] [pcidev:N]
iohyve getall [name]
iohyve add [name] [size] [[pool]]
iohyve remove [name] [diskN]
iohyve resize [name] [diskN] [size]
iohyve disks [name]
iohyve snap [name]@[snapshotname]
iohyve roll [name]@[snapshotname]
iohyve clone [name] [clonename]
iohyve snaplist
iohyve taplist
iohyve activetaps
iohyve conlist
iohyve console [name]
iohyve conreset
iohyve help
iohyve man
DESCRIPTION
The iohyve(8) shell script utilizes the FreeBSD hypervisor bhyve(8),
zfs(8), and nmdm(4) to make virtualization on FreeBSD easy and simple.
The basic idea is to store bhyve settings in zfs user properties of zfs
datasets that house important guest files like block devices and grub
configurations. iohyve(8) uses the virtio drivers built into the
GENERIC kernel for virtualization.
OPTIONS
version
Prints the current running version of iohyve
setup Installs required zfs datasets and kernel modules for iohyve.
Usage: 'iohyve setup pool=poolname kmod=0/1 net=[iface]' where
[poolname] is the pool you want to install iohyve on, kmod=[0/1]
is if you want iohyve to load or unload the kernel modules
required by iohyve. 1 is load. net=[iface] will set up the net‐
work bridge to the specified interface. Multiple pools are sup‐
ported, additional pools get mounted in /iohyve/poolname
list Lists the zfs dataset directorys for iohyve.
info Lists all the guests along with their RAM, CPU, Size, OS,
Loader, and Description (if -d is passed)
isolist
List Lists the installed ISOs in the /iohyve/ISO directory.
fwlist Lists the firmwares in the /iohyve/Firmware directory.
fetch Fetches installation ISO or install image and creates a dataset
for it. Usage: 'iohyve fetch [URL]' where [URL] is the HTTP or
FTP URL to fetch from the internet.
cpiso Copies installation ISO or install image from your host and cre‐
ates a dataset for it. Usage: 'iohyve cpiso [path]' where
[path] is the full path to ISO file on the host machine.
renameiso
Renames an ISO Usage: 'iohyve renameiso [ISO] [newname]' where
[ISO] is the name of the ISO you would like to rename. [newname]
is a new name.
rmiso Removes installed ISO from /iohyve/ISO Usage: 'iohyve rmiso
[ISO]' where [ISO] is the name of the ISO you would like to
delete.
fetchfw
Fetches firmware and creates a dataset for it. Usage: 'iohyve
fetchfw [URL]' where [URL] is the HTTP or FTP URL to fetch from
the internet.
cpfw Copies firmware from your host and creates a dataset for it.
Usage: 'iohyve cpfw [path]' where [path] is the full path to
firmware file on the host machine.
renamefw
Renames a Firmware Usage: 'iohyve renamefw [firmware] [newname]'
where [firmware] is the name of the firmware you would like to
rename. [newname] is a new name.
rmfw Removes installed firmware from /iohyve/Firmware Usage: 'iohyve
rmfw [firmware]' where [firmware] is the name of the firmware
you would like to delete.
create Creates new guest operating system. Usage: 'iohyve create
[name] [size] [[pool]]' where [name] is the name you would like
to use, [size] is the size of the virtual block device in '16G'
format where the capital G signifies gigabytes. If you specify
the pool, the first disk gets added on that pool.
install
Loads and boots into ISO for guest installation. Usage: 'iohyve
install [name] [ISO]' where [name] is the name of the guest, and
[ISO] is the name of the ISO you would like to boot from in the
form of: 'instal.iso'
load Loads the guest operating system bootloader and resources.
Usage: 'iohyve load [name] [ISO]' where [name]is the name of the
guest operating system. [bootimg] is the path to the boot
medium
boot Boots the guest into the operating system. 'iohyve run' needs to
be run before this is done. Usage: 'iohyve boot [name] [run‐
mode] [pci]' where [name]is the name of the guest operating sys‐
tem. [runmode] describes how to start the guest: 0 = start only
once 1 = regular persist Stop if the guest is powering off 2 =
always persist Always restart the guest [pci] is a space sepa‐
rated list of pci devices based on slot-less bhyve -s commands.
Example: "ahci-hd,/path/disk.img virtio-net,tap0" Note: host‐
bridge and lpc are automatically added
start Starts the guest operating system. (Combines load & boot) Usage:
'iohyve start [name] [-s | -a]' where [name] is the name of the
guest operating system. [-s] will cause the guest to be started
once [-a] will cause the guest to always restart
stop Gracefully stops guest operating system. Usage: 'iohyve stop
[name]' where [name] is the name of the guest operating system.
forcekill
Forces the guest to stop. Runs kill -9 and destroys the guest in
VMM. USE WITH EXTREME CAUTION AND AS A LAST RESORT. Can be used
to kill guests stuck at the GRUB console that you do not have
access to.
scram Gracefully stop all bhyve guests. Does not destroy resources.
destroy
Destroys guest resources. Usage: 'iohyve destroy [name]' where
[name] is the name of the guest operating system.
rename Renames the guest Usage: 'iohyve rename [name] [newname]' where
[name] is the name of the guest and [newname] is the new name.
delete Deletes all data for the guest. Usage: 'iohyve delete [name]'
where [name] is the name of the guest operating system.
set Sets ZFS properties for guests one at a time Usage: 'iohyve set
[name] [prop1=value] [prop2=value]...' where [name] is the name
of the guest operating system. Properties: ram=512M or ram=2G
(M for megabytes, G for gigabtyes) cpu=1 (number of cpu cores)
con=nmdm0 (where to attach null modem console) tap=tap0 (tap
device for virtio-net) size=size of block device name=name of
guest pcidev:[n]=[spec] Generic way to add devices to the guest.
[n] is a generic random number or string [spec] defines a vir‐
tual device added to the guest by using a bhyve -s argument
without the pcislot or function argument. PCI slot numbers are
assigned automatically by iohyve. Examples:
"pcidev:1=passthru,2/0/0" "pcidev:2=ahci-
hd,/some/place/disk.img"
get Gets ZFS properties for guests one at a time Usage: 'iohyve get
[name] [prop]' where [name] is the name of the guest operating
system. [prop] is the property you want to view. (See 'iohyve
set' info)
rmpci Removes a pcidev from the guest Usage: 'iohyve rmpci [name]
[pcidev:N]' where [name] is the name of the guest operating sys‐
tem. [pcidev:N] is the PCI device you want removed. Ex:
'pcidev:3'
getall Gets all the ZFS properties for a guest Usage: 'iohyve getall
[name]' where [name] is the name of the guest operating system.
add Adds a new disk to the guest. Usage: 'iohyve add [name] [size]
[[pool]]' where [name] is the name of the guest, [size] is the
size of the virtual block device in '16G' format where the capi‐
tal G signifies gigabytes. If pool is specified, the disk gets
added on that pool
remove Removes a disk from the guest. Cannot be disk0. Usage: 'iohyve
remove [name] [diskN]' where [name] is the name of the guest,
[diskN] is the disk you would like to remove from the guest. See
'iohyve disks' for a list of disks for a guest
resize Resizes a disk. THIS CAN BREAK THINGS ON THE GUEST. Usage:
'iohyve resize [name] [diskN] [size]' where [name] is the name
of the guest, [diskN] is the disk you would like to remove from
the guest, and [size] is the size of the virtual block device in
'16G' format where the capital G signifies gigabytes. See
'iohyve disks' for a list of disks for a guest
disks Lists the disks attached to a guest. Usage: 'iohyve disks
[name]' where [name] is the name of the guest operating system.
snap Take a snapshot of a guest. Usage: 'iohyve snap [name]@[snap‐
shot]' where [name] is the name of the guest and [snapshot] is
what you would like to name the snapshot.
roll Rollback guest to a snapshot. Usage: 'iohyve roll [name]@[snap‐
shot]' where [name] is the name of the guest and [snapshot] is
what you would like to name the snapshot.
clone Clone a guest. Note that this will clone all of the properties.
If you want to use the clone and the original guest at the same
time you will need to change the tap and nmdm properties Usage:
'iohyve clone [name] [clonename]' where [name] is the name of
the guest and [clonename] is what you would like to name the new
clone.
snaplist
List all of the snapshots for all the guests. Does not show
snapshots of disks (they are there, though).
taplist
Lists all of the network taps taken by iohyve guests This will
list taps that are not active as well.
activetaps
Lists all active taps in use
conlist
Lists all of the nullmodem consoles taken by iohyve guests.
This will list taps that are not active as well.
console
Consoles into a guest operating system. Utilizes nmdm(4) and
cu(1) to open a console on a guest operating system. Since
bhyve(8) does not emulate video, so we need to administer the
guests via a serial communication device. Since iohyve uses
cu(1), you will need to press the tilde (~) twice then period
(.) to exit the console. (Think typing ~~. real fast to exit
console) Usage: 'iohyve console [name]' where [name] is the name
of the guest operating system.
conreset
Ends all console sessions for when things get weird.
help General usage help.
EXAMPLES
Setup iohyve zpool named tank:
iohyve setup pool=tank
Fetch FreeBSD install ISO for later:
iohyve fetch ftp://ftp.freebsd.org/.../10.2/FreeBSD....iso
Create a new FreeBSD guest named bsdguest on console nmdm0 with an
8Gigabyte virtual HDD:
iohyve create bsdguest 8G
List ISO's:
iohyve isolist
Install the FreeBSD guest bsdguest:
iohyve install bsdguest FreeBSD-10.2-RELEASE-amd64-bootonly.iso
Console into the intallation:
iohyve console bsdguest
Once installation is done, exit console (~~.) and destroy guest:
iohyve destroy bsdguest
Now that the guest is installed, it can be started like usual:
iohyve start bsdguest
Some guest os's can be gracefully stopped:
iohyve stop bsdguest
List all guests created with:
iohyve list
List all guests that have resources allocated using:
iohyve vmmlist
List all runnng guests using:
iohvye running
You can change guest properties by using set:
iohyve set bsdguest ram=512M iohyve set bsdguest cpu=1 iohyve set
bsdguest tap=tap0 iohyve set bsdguest con=nmdm0
Get a spcific guest property:
iohyve get bsdguest ram
Get all guest properties:
iohyve getall bsdguest
Install and run a Debian guest:
iohyve create debianvm 8G iohyve set debianvm loader=grub-bhyve iohyve
install debianvm deb8.1-net.iso iohyve start debianvm
Take a snapshot of a guest:
iohyve snap bsdguest@beforeupdate iohyve snaplist iohyve roll
bsdguest@beforeupdate
Make an independent clone of a guest:
iohyve clone bsdguest dolly
AUTHOR
Trent -- @pr1ntf
SEE ALSObhyve(8), bhyveload(8), zfs(8), nmdm(4), cu(1), if_bridge(4),
grub2-bhyve(8)
09 January 2016 iohyve(8)
