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QEMU emulator version 2.5.0 (Debian 1:2.5+dfsg-5ubuntu10.16), Copyright (c) 2003-2008 Fabrice Bellard |
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usage: qemu-system-i386 [options] [disk_image] |
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'disk_image' is a raw hard disk image for IDE hard disk 0 |
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Standard options: |
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-h or -help display this help and exit |
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-version display version information and exit |
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-machine [type=]name[,prop[=value][,...]] |
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selects emulated machine ('-machine help' for list) |
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property accel=accel1[:accel2[:...]] selects accelerator |
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supported accelerators are kvm, xen, tcg (default: tcg) |
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kernel_irqchip=on|off controls accelerated irqchip support |
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vmport=on|off|auto controls emulation of vmport (default: auto) |
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kvm_shadow_mem=size of KVM shadow MMU |
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dump-guest-core=on|off include guest memory in a core dump (default=on) |
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mem-merge=on|off controls memory merge support (default: on) |
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iommu=on|off controls emulated Intel IOMMU (VT-d) support (default=off) |
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igd-passthru=on|off controls IGD GFX passthrough support (default=off) |
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aes-key-wrap=on|off controls support for AES key wrapping (default=on) |
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dea-key-wrap=on|off controls support for DEA key wrapping (default=on) |
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suppress-vmdesc=on|off disables self-describing migration (default=off) |
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-cpu cpu select CPU ('-cpu help' for list) |
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-smp [cpus=]n[,maxcpus=cpus][,cores=cores][,threads=threads][,sockets=sockets] |
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set the number of CPUs to 'n' [default=1] |
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maxcpus= maximum number of total cpus, including |
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offline CPUs for hotplug, etc |
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cores= number of CPU cores on one socket |
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threads= number of threads on one CPU core |
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sockets= number of discrete sockets in the system |
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-numa node[,mem=size][,cpus=cpu[-cpu]][,nodeid=node] |
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-numa node[,memdev=id][,cpus=cpu[-cpu]][,nodeid=node] |
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-add-fd fd=fd,set=set[,opaque=opaque] |
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Add 'fd' to fd 'set' |
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-set group.id.arg=value |
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set <arg> parameter for item <id> of type <group> |
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i.e. -set drive.$id.file=/path/to/image |
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-global driver.property=value |
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-global driver=driver,property=property,value=value |
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set a global default for a driver property |
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-boot [order=drives][,once=drives][,menu=on|off] |
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[,splash=sp_name][,splash-time=sp_time][,reboot-timeout=rb_time][,strict=on|off] |
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'drives': floppy (a), hard disk (c), CD-ROM (d), network (n) |
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'sp_name': the file's name that would be passed to bios as logo picture, if menu=on |
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'sp_time': the period that splash picture last if menu=on, unit is ms |
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'rb_timeout': the timeout before guest reboot when boot failed, unit is ms |
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-m[emory] [size=]megs[,slots=n,maxmem=size] |
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configure guest RAM |
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size: initial amount of guest memory |
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slots: number of hotplug slots (default: none) |
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maxmem: maximum amount of guest memory (default: none) |
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NOTE: Some architectures might enforce a specific granularity |
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-mem-path FILE provide backing storage for guest RAM |
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-mem-prealloc preallocate guest memory (use with -mem-path) |
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-k language use keyboard layout (for example 'fr' for French) |
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-audio-help print list of audio drivers and their options |
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-soundhw c1,... enable audio support |
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and only specified sound cards (comma separated list) |
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use '-soundhw help' to get the list of supported cards |
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use '-soundhw all' to enable all of them |
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-balloon none disable balloon device |
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-balloon virtio[,addr=str] |
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enable virtio balloon device (default) |
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-device driver[,prop[=value][,...]] |
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add device (based on driver) |
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prop=value,... sets driver properties |
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use '-device help' to print all possible drivers |
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use '-device driver,help' to print all possible properties |
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-name string1[,process=string2][,debug-threads=on|off] |
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set the name of the guest |
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string1 sets the window title and string2 the process name (on Linux) |
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When debug-threads is enabled, individual threads are given a separate name (on Linux) |
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NOTE: The thread names are for debugging and not a stable API. |
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-uuid %08x-%04x-%04x-%04x-%012x |
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specify machine UUID |
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Block device options: |
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-fda/-fdb file use 'file' as floppy disk 0/1 image |
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-hda/-hdb file use 'file' as IDE hard disk 0/1 image |
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-hdc/-hdd file use 'file' as IDE hard disk 2/3 image |
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-cdrom file use 'file' as IDE cdrom image (cdrom is ide1 master) |
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-drive [file=file][,if=type][,bus=n][,unit=m][,media=d][,index=i] |
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[,cyls=c,heads=h,secs=s[,trans=t]][,snapshot=on|off] |
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[,cache=writethrough|writeback|none|directsync|unsafe][,format=f] |
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[,serial=s][,addr=A][,rerror=ignore|stop|report] |
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[,werror=ignore|stop|report|enospc][,id=name][,aio=threads|native] |
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[,readonly=on|off][,copy-on-read=on|off] |
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[,discard=ignore|unmap][,detect-zeroes=on|off|unmap] |
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[[,bps=b]|[[,bps_rd=r][,bps_wr=w]]] |
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[[,iops=i]|[[,iops_rd=r][,iops_wr=w]]] |
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[[,bps_max=bm]|[[,bps_rd_max=rm][,bps_wr_max=wm]]] |
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[[,iops_max=im]|[[,iops_rd_max=irm][,iops_wr_max=iwm]]] |
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[[,iops_size=is]] |
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[[,group=g]] |
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use 'file' as a drive image |
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-mtdblock file use 'file' as on-board Flash memory image |
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-sd file use 'file' as SecureDigital card image |
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-pflash file use 'file' as a parallel flash image |
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-snapshot write to temporary files instead of disk image files |
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-hdachs c,h,s[,t] |
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force hard disk 0 physical geometry and the optional BIOS |
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translation (t=none or lba) (usually QEMU can guess them) |
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-fsdev fsdriver,id=id[,path=path,][security_model={mapped-xattr|mapped-file|passthrough|none}] |
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[,writeout=immediate][,readonly][,socket=socket|sock_fd=sock_fd] |
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-virtfs local,path=path,mount_tag=tag,security_model=[mapped-xattr|mapped-file|passthrough|none] |
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[,writeout=immediate][,readonly][,socket=socket|sock_fd=sock_fd] |
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-virtfs_synth Create synthetic file system image |
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USB options: |
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-usb enable the USB driver (will be the default soon) |
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-usbdevice name add the host or guest USB device 'name' |
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Display options: |
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-display sdl[,frame=on|off][,alt_grab=on|off][,ctrl_grab=on|off] |
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[,window_close=on|off]|curses|none| |
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gtk[,grab_on_hover=on|off]| |
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vnc=<display>[,<optargs>] |
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select display type |
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-nographic disable graphical output and redirect serial I/Os to console |
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-curses use a curses/ncurses interface instead of SDL |
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-no-frame open SDL window without a frame and window decorations |
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-alt-grab use Ctrl-Alt-Shift to grab mouse (instead of Ctrl-Alt) |
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-ctrl-grab use Right-Ctrl to grab mouse (instead of Ctrl-Alt) |
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-no-quit disable SDL window close capability |
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-sdl enable SDL |
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-spice [port=port][,tls-port=secured-port][,x509-dir=<dir>] |
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[,x509-key-file=<file>][,x509-key-password=<file>] |
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[,x509-cert-file=<file>][,x509-cacert-file=<file>] |
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[,x509-dh-key-file=<file>][,addr=addr][,ipv4|ipv6|unix] |
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[,tls-ciphers=<list>] |
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[,tls-channel=[main|display|cursor|inputs|record|playback]] |
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[,plaintext-channel=[main|display|cursor|inputs|record|playback]] |
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[,sasl][,password=<secret>][,disable-ticketing] |
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[,image-compression=[auto_glz|auto_lz|quic|glz|lz|off]] |
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[,jpeg-wan-compression=[auto|never|always]] |
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[,zlib-glz-wan-compression=[auto|never|always]] |
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[,streaming-video=[off|all|filter]][,disable-copy-paste] |
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[,disable-agent-file-xfer][,agent-mouse=[on|off]] |
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[,playback-compression=[on|off]][,seamless-migration=[on|off]] |
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enable spice |
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at least one of {port, tls-port} is mandatory |
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-portrait rotate graphical output 90 deg left (only PXA LCD) |
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-rotate <deg> rotate graphical output some deg left (only PXA LCD) |
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-vga [std|cirrus|vmware|qxl|xenfb|tcx|cg3|virtio|none] |
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select video card type |
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-full-screen start in full screen |
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-vnc display start a VNC server on display |
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1 target only: |
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-win2k-hack use it when installing Windows 2000 to avoid a disk full bug |
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-no-fd-bootchk disable boot signature checking for floppy disks |
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-no-acpi disable ACPI |
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-no-hpet disable HPET |
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-acpitable [sig=str][,rev=n][,oem_id=str][,oem_table_id=str][,oem_rev=n][,asl_compiler_id=str][,asl_compiler_rev=n][,{data|file}=file1[:file2]...] |
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ACPI table description |
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-smbios file=binary |
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load SMBIOS entry from binary file |
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-smbios type=0[,vendor=str][,version=str][,date=str][,release=%d.%d] |
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[,uefi=on|off] |
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specify SMBIOS type 0 fields |
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-smbios type=1[,manufacturer=str][,product=str][,version=str][,serial=str] |
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[,uuid=uuid][,sku=str][,family=str] |
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specify SMBIOS type 1 fields |
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-smbios type=2[,manufacturer=str][,product=str][,version=str][,serial=str] |
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[,asset=str][,location=str] |
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specify SMBIOS type 2 fields |
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-smbios type=3[,manufacturer=str][,version=str][,serial=str][,asset=str] |
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[,sku=str] |
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specify SMBIOS type 3 fields |
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-smbios type=4[,sock_pfx=str][,manufacturer=str][,version=str][,serial=str] |
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[,asset=str][,part=str] |
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specify SMBIOS type 4 fields |
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-smbios type=17[,loc_pfx=str][,bank=str][,manufacturer=str][,serial=str] |
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[,asset=str][,part=str][,speed=%d] |
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specify SMBIOS type 17 fields |
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Network options: |
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-netdev user,id=str[,net=addr[/mask]][,host=addr][,restrict=on|off] |
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[,hostname=host][,dhcpstart=addr][,dns=addr][,dnssearch=domain][,tftp=dir] |
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[,bootfile=f][,hostfwd=rule][,guestfwd=rule][,smb=dir[,smbserver=addr]] |
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configure a user mode network backend with ID 'str', |
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its DHCP server and optional services |
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-netdev tap,id=str[,fd=h][,fds=x:y:...:z][,ifname=name][,script=file][,downscript=dfile] |
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[,helper=helper][,sndbuf=nbytes][,vnet_hdr=on|off][,vhost=on|off] |
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[,vhostfd=h][,vhostfds=x:y:...:z][,vhostforce=on|off][,queues=n] |
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configure a host TAP network backend with ID 'str' |
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use network scripts 'file' (default=/etc/qemu-ifup) |
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to configure it and 'dfile' (default=/etc/qemu-ifdown) |
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to deconfigure it |
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use '[down]script=no' to disable script execution |
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use network helper 'helper' (default=/usr/lib/qemu/qemu-bridge-helper) to |
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configure it |
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use 'fd=h' to connect to an already opened TAP interface |
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use 'fds=x:y:...:z' to connect to already opened multiqueue capable TAP interfaces |
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use 'sndbuf=nbytes' to limit the size of the send buffer (the |
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default is disabled 'sndbuf=0' to enable flow control set 'sndbuf=1048576') |
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use vnet_hdr=off to avoid enabling the IFF_VNET_HDR tap flag |
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use vnet_hdr=on to make the lack of IFF_VNET_HDR support an error condition |
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use vhost=on to enable experimental in kernel accelerator |
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(only has effect for virtio guests which use MSIX) |
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use vhostforce=on to force vhost on for non-MSIX virtio guests |
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use 'vhostfd=h' to connect to an already opened vhost net device |
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use 'vhostfds=x:y:...:z to connect to multiple already opened vhost net devices |
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use 'queues=n' to specify the number of queues to be created for multiqueue TAP |
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-netdev bridge,id=str[,br=bridge][,helper=helper] |
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configure a host TAP network backend with ID 'str' that is |
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connected to a bridge (default=br0) |
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using the program 'helper (default=/usr/lib/qemu/qemu-bridge-helper) |
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-netdev l2tpv3,id=str,src=srcaddr,dst=dstaddr[,srcport=srcport][,dstport=dstport] |
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[,rxsession=rxsession],txsession=txsession[,ipv6=on/off][,udp=on/off] |
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[,cookie64=on/off][,counter][,pincounter][,txcookie=txcookie] |
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[,rxcookie=rxcookie][,offset=offset] |
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configure a network backend with ID 'str' connected to |
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an Ethernet over L2TPv3 pseudowire. |
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Linux kernel 3.3+ as well as most routers can talk |
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L2TPv3. This transport allows connecting a VM to a VM, |
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VM to a router and even VM to Host. It is a nearly-universal |
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standard (RFC3391). Note - this implementation uses static |
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pre-configured tunnels (same as the Linux kernel). |
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use 'src=' to specify source address |
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use 'dst=' to specify destination address |
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use 'udp=on' to specify udp encapsulation |
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use 'srcport=' to specify source udp port |
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use 'dstport=' to specify destination udp port |
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use 'ipv6=on' to force v6 |
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L2TPv3 uses cookies to prevent misconfiguration as |
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well as a weak security measure |
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use 'rxcookie=0x012345678' to specify a rxcookie |
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use 'txcookie=0x012345678' to specify a txcookie |
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use 'cookie64=on' to set cookie size to 64 bit, otherwise 32 |
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use 'counter=off' to force a 'cut-down' L2TPv3 with no counter |
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use 'pincounter=on' to work around broken counter handling in peer |
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use 'offset=X' to add an extra offset between header and data |
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-netdev socket,id=str[,fd=h][,listen=[host]:port][,connect=host:port] |
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configure a network backend to connect to another network |
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using a socket connection |
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-netdev socket,id=str[,fd=h][,mcast=maddr:port[,localaddr=addr]] |
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configure a network backend to connect to a multicast maddr and port |
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use 'localaddr=addr' to specify the host address to send packets from |
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-netdev socket,id=str[,fd=h][,udp=host:port][,localaddr=host:port] |
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configure a network backend to connect to another network |
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using an UDP tunnel |
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-netdev vhost-user,id=str,chardev=dev[,vhostforce=on|off] |
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configure a vhost-user network, backed by a chardev 'dev' |
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-netdev hubport,id=str,hubid=n |
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configure a hub port on QEMU VLAN 'n' |
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-net nic[,vlan=n][,macaddr=mac][,model=type][,name=str][,addr=str][,vectors=v] |
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old way to create a new NIC and connect it to VLAN 'n' |
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(use the '-device devtype,netdev=str' option if possible instead) |
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-net dump[,vlan=n][,file=f][,len=n] |
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dump traffic on vlan 'n' to file 'f' (max n bytes per packet) |
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-net none use it alone to have zero network devices. If no -net option |
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is provided, the default is '-net nic -net user' |
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-net [user|tap|bridge|socket][,vlan=n][,option][,option][,...] |
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old way to initialize a host network interface |
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(use the -netdev option if possible instead) |
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Character device options: |
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-chardev null,id=id[,mux=on|off] |
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-chardev socket,id=id[,host=host],port=port[,to=to][,ipv4][,ipv6][,nodelay][,reconnect=seconds] |
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[,server][,nowait][,telnet][,reconnect=seconds][,mux=on|off] (tcp) |
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-chardev socket,id=id,path=path[,server][,nowait][,telnet][,reconnect=seconds][,mux=on|off] (unix) |
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-chardev udp,id=id[,host=host],port=port[,localaddr=localaddr] |
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[,localport=localport][,ipv4][,ipv6][,mux=on|off] |
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-chardev msmouse,id=id[,mux=on|off] |
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-chardev vc,id=id[[,width=width][,height=height]][[,cols=cols][,rows=rows]] |
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[,mux=on|off] |
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-chardev ringbuf,id=id[,size=size] |
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-chardev file,id=id,path=path[,mux=on|off] |
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-chardev pipe,id=id,path=path[,mux=on|off] |
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-chardev pty,id=id[,mux=on|off] |
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-chardev stdio,id=id[,mux=on|off][,signal=on|off] |
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-chardev braille,id=id[,mux=on|off] |
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-chardev serial,id=id,path=path[,mux=on|off] |
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-chardev tty,id=id,path=path[,mux=on|off] |
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-chardev parallel,id=id,path=path[,mux=on|off] |
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-chardev parport,id=id,path=path[,mux=on|off] |
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-chardev spicevmc,id=id,name=name[,debug=debug] |
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-chardev spiceport,id=id,name=name[,debug=debug] |
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Device URL Syntax: |
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-iscsi [user=user][,password=password] |
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[,header-digest=CRC32C|CR32C-NONE|NONE-CRC32C|NONE |
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[,initiator-name=initiator-iqn][,id=target-iqn] |
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[,timeout=timeout] |
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iSCSI session parameters |
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Bluetooth(R) options: |
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-bt hci,null dumb bluetooth HCI - doesn't respond to commands |
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-bt hci,host[:id] |
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use host's HCI with the given name |
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-bt hci[,vlan=n] |
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emulate a standard HCI in virtual scatternet 'n' |
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-bt vhci[,vlan=n] |
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add host computer to virtual scatternet 'n' using VHCI |
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-bt device:dev[,vlan=n] |
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emulate a bluetooth device 'dev' in scatternet 'n' |
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TPM device options: |
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-tpmdev passthrough,id=id[,path=path][,cancel-path=path] |
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use path to provide path to a character device; default is /dev/tpm0 |
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use cancel-path to provide path to TPM's cancel sysfs entry; if |
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not provided it will be searched for in /sys/class/misc/tpm?/device |
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Linux/Multiboot boot specific: |
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-kernel bzImage use 'bzImage' as kernel image |
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-append cmdline use 'cmdline' as kernel command line |
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-initrd file use 'file' as initial ram disk |
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-dtb file use 'file' as device tree image |
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Debug/Expert options: |
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-fw_cfg [name=]<name>,file=<file> |
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add named fw_cfg entry from file |
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-fw_cfg [name=]<name>,string=<str> |
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add named fw_cfg entry from string |
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-serial dev redirect the serial port to char device 'dev' |
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-parallel dev redirect the parallel port to char device 'dev' |
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-monitor dev redirect the monitor to char device 'dev' |
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-qmp dev like -monitor but opens in 'control' mode |
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-qmp-pretty dev like -qmp but uses pretty JSON formatting |
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-mon [chardev=]name[,mode=readline|control][,default] |
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-debugcon dev redirect the debug console to char device 'dev' |
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-pidfile file write PID to 'file' |
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-singlestep always run in singlestep mode |
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-S freeze CPU at startup (use 'c' to start execution) |
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-realtime [mlock=on|off] |
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run qemu with realtime features |
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mlock=on|off controls mlock support (default: on) |
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-gdb dev wait for gdb connection on 'dev' |
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-s shorthand for -gdb tcp::1234 |
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-d item1,... enable logging of specified items (use '-d help' for a list of log items) |
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-D logfile output log to logfile (default stderr) |
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-L path set the directory for the BIOS, VGA BIOS and keymaps |
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-bios file set the filename for the BIOS |
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-enable-kvm enable KVM full virtualization support |
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-xen-domid id specify xen guest domain id |
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-xen-create create domain using xen hypercalls, bypassing xend |
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warning: should not be used when xend is in use |
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-xen-attach attach to existing xen domain |
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xend will use this when starting QEMU |
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-no-reboot exit instead of rebooting |
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-no-shutdown stop before shutdown |
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-loadvm [tag|id] |
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start right away with a saved state (loadvm in monitor) |
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-daemonize daemonize QEMU after initializing |
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-option-rom rom load a file, rom, into the option ROM space |
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-rtc [base=utc|localtime|date][,clock=host|rt|vm][,driftfix=none|slew] |
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set the RTC base and clock, enable drift fix for clock ticks (x86 only) |
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-icount [shift=N|auto][,align=on|off][,sleep=no,rr=record|replay,rrfile=<filename>] |
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enable virtual instruction counter with 2^N clock ticks per |
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instruction, enable aligning the host and virtual clocks |
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or disable real time cpu sleeping |
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-watchdog model |
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enable virtual hardware watchdog [default=none] |
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-watchdog-action reset|shutdown|poweroff|pause|debug|none |
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action when watchdog fires [default=reset] |
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-echr chr set terminal escape character instead of ctrl-a |
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-virtioconsole c |
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set virtio console |
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-show-cursor show cursor |
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-tb-size n set TB size |
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-incoming tcp:[host]:port[,to=maxport][,ipv4][,ipv6] |
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-incoming rdma:host:port[,ipv4][,ipv6] |
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-incoming unix:socketpath |
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prepare for incoming migration, listen on |
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specified protocol and socket address |
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-incoming fd:fd |
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-incoming exec:cmdline |
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accept incoming migration on given file descriptor |
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or from given external command |
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-incoming defer |
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wait for the URI to be specified via migrate_incoming |
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-nodefaults don't create default devices |
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-chroot dir chroot to dir just before starting the VM |
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-runas user change to user id user just before starting the VM |
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-sandbox <arg> Enable seccomp mode 2 system call filter (default 'off'). |
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-readconfig <file> |
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-writeconfig <file> |
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read/write config file |
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-nodefconfig |
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do not load default config files at startup |
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-no-user-config |
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do not load user-provided config files at startup |
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-trace [events=<file>][,file=<file>] |
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specify tracing options |
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-enable-fips enable FIPS 140-2 compliance |
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-msg timestamp[=on|off] |
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change the format of messages |
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on|off controls leading timestamps (default:on) |
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-dump-vmstate <file> |
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Output vmstate information in JSON format to file. |
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Use the scripts/vmstate-static-checker.py file to |
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check for possible regressions in migration code |
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by comparing two such vmstate dumps. |
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Generic object creation |
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-object TYPENAME[,PROP1=VALUE1,...] |
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create a new object of type TYPENAME setting properties |
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in the order they are specified. Note that the 'id' |
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property must be set. These objects are placed in the |
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'/objects' path. |
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During emulation, the following keys are useful: |
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ctrl-alt-f toggle full screen |
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ctrl-alt-n switch to virtual console 'n' |
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ctrl-alt toggle mouse and keyboard grab |
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When using -nographic, press 'ctrl-a h' to get some help. |
I tried the same but I have a problem when using the accelerator whpx and Hyper-v is enabled, there's a network problem that I cannot ping the Qemu guest from windows host and vice versa.
While whpx is not used everything is working fine.
Do you have any solution for that please?
Thank you in advance for your support