(qemu) help

help

help|? [cmd] -- show the help

commit device|all -- commit changes to the disk images (if -snapshot is used) or backing files

q|quit  -- quit the emulator

block_resize device size -- resize a block image

eject [-f] device -- eject a removable medium (use -f to force it)

drive_del device -- remove host block device

change device filename [format] -- change a removable medium, optional format

screendump filename -- save screen into PPM image 'filename'

logfile filename -- output logs to 'filename'

log item1[,...] -- activate logging of the specified items to '/tmp/qemu.log'

savevm [tag|id] -- save a VM snapshot. If no tag or id are provided, a new snapshot is created

loadvm tag|id -- restore a VM snapshot from its tag or id

delvm tag|id -- delete a VM snapshot from its tag or id

singlestep [on|off] -- run emulation in singlestep mode or switch to normal mode

stop  -- stop emulation

c|cont  -- resume emulation

gdbserver [device] -- start gdbserver on given device (default 'tcp::1234'), stop with 'none'

x /fmt addr -- virtual memory dump starting at 'addr'

xp /fmt addr -- physical memory dump starting at 'addr'

p|print /fmt expr -- print expression value (use $reg for CPU register access)

i /fmt addr -- I/O port read

o /fmt addr value -- I/O port write

sendkey keys [hold_ms] -- send keys to the VM (e.g. 'sendkey ctrl-alt-f1', default hold time=100 ms)

system_reset  -- reset the system

system_powerdown  -- send system power down event

sum addr size -- compute the checksum of a memory region

usb_add device -- add USB device (e.g. 'host:bus.addr' or 'host:vendor_id:product_id')

usb_del device -- remove USB device 'bus.addr'

device_add driver[,prop=value][,...] -- add device, like -device on the command line

device_del device -- remove device

cpu index -- set the default CPU

mouse_move dx dy [dz] -- send mouse move events

mouse_button state -- change mouse button state (1=L, 2=M, 4=R)

mouse_set index -- set which mouse device receives events

wavcapture path [frequency [bits [channels]]] -- capture audio to a wave file (default frequency=44100 bits=16 channels=2)

stopcapture capture index -- stop capture

memsave addr size file -- save to disk virtual memory dump starting at 'addr' of size 'size'

pmemsave addr size file -- save to disk physical memory dump starting at 'addr' of size 'size'

boot_set bootdevice -- define new values for the boot device list

nmi cpu -- inject an NMI on the given CPU

migrate [-d] [-b] [-i] uri -- migrate to URI (using -d to not wait for completion)

                         -b for migration without shared storage with full copy of disk

                         -i for migration without shared storage with incremental copy of disk (base image shared between src and destination)

migrate_cancel  -- cancel the current VM migration

migrate_set_speed value -- set maximum speed (in bytes) for migrations. Defaults to MB if no size suffix is specified, ie. B/K/M/G/T

migrate_set_downtime value -- set maximum tolerated downtime (in seconds) for migrations

snapshot_blkdev device [new-image-file] [format] -- initiates a live snapshot

                        of device. If a new image file is specified, the

                        new image file will become the new root image.

                        If format is specified, the snapshot file will

                        be created in that format. Otherwise the

                        snapshot will be internal! (currently unsupported)

client_migrate_info protocol hostname port tls-port cert-subject -- send migration info to spice/vnc client

drive_add [[<domain>:]<bus>:]<slot>

[file=file][,if=type][,bus=n]

[,unit=m][,media=d][index=i]

[,cyls=c,heads=h,secs=s[,trans=t]]

[snapshot=on|off][,cache=on|off] -- add drive to PCI storage controller

pci_add auto|[[<domain>:]<bus>:]<slot> nic|storage [[vlan=n][,macaddr=addr][,model=type]] [file=file][,if=type][,bus=nr]... -- hot-add PCI device

pci_del [[<domain>:]<bus>:]<slot> -- hot remove PCI device

pcie_aer_inject_error [-a] [-c] id <error_status> [<tlp header> [<tlp header prefix>]] -- inject pcie aer error

                         -a for advisory non fatal error

                         -c for correctable error

                        <id> = qdev device id

                        <error_status> = error string or 32bit

                        <tlb header> = 32bit x 4

                        <tlb header prefix> = 32bit x 4

host_net_add tap|user|socket|vde|dump [options] -- add host VLAN client

host_net_remove vlan_id name -- remove host VLAN client

netdev_add [user|tap|socket],id=str[,prop=value][,...] -- add host network device

netdev_del id -- remove host network device

hostfwd_add [vlan_id name] [tcp|udp]:[hostaddr]:hostport-[guestaddr]:guestport -- redirect TCP or UDP connections from host to guest (requires -net user)

hostfwd_remove [vlan_id name] [tcp|udp]:[hostaddr]:hostport -- remove host-to-guest TCP or UDP redirection

balloon target -- request VM to change its memory allocation (in MB)

set_link name on|off -- change the link status of a network adapter

watchdog_action [reset|shutdown|poweroff|pause|debug|none] -- change watchdog action

acl_show aclname -- list rules in the access control list

acl_policy aclname allow|deny -- set default access control list policy

acl_add aclname match allow|deny [index] -- add a match rule to the access control list

acl_remove aclname match -- remove a match rule from the access control list

acl_reset aclname -- reset the access control list

mce [-b] cpu bank status mcgstatus addr misc -- inject a MCE on the given CPU [and broadcast to other CPUs with -b option]

getfd getfd name -- receive a file descriptor via SCM rights and assign it a name

closefd closefd name -- close a file descriptor previously passed via SCM rights

block_passwd block_passwd device password -- set the password of encrypted block devices

cpu_set cpu [online|offline] -- change cpu state

set_password protocol password action-if-connected -- set spice/vnc password

expire_password protocol time -- set spice/vnc password expire-time

info [subcommand] -- show various information about the system state