[virt-tools-list] virt-manger: KVM is not available.
Florian Lindner
mailinglists at xgm.de
Wed May 4 17:38:27 UTC 2011
Am Dienstag 03 Mai 2011, 17:19:48 schrieb Cole Robinson:
> On 05/02/2011 03:25 PM, Florian Lindner wrote:
> > Am Montag 02 Mai 2011, 16:23:10 schrieb Cole Robinson:
> >> On 05/01/2011 05:26 PM, Florian Lindner wrote:
> >>> Hello!
> >>>
> >>> I have a problem with virt-manage saying my KVM wasn't available.
> >>>
> >>> System is Archlinux, libvirtd 0.9.0, Kernel 2.6.38.
> >>> CPU is a Phenom X4, supports virtualization.
> >>>
> >>> modprobe kvm and kvm-amd works fine:
> >>>
> >>> May 1 23:19:48 localhost kernel: [ 750.262215] kvm: Nested
> >>> Virtualization enabled
> >>> May 1 23:19:48 localhost kernel: [ 750.262218] kvm: Nested Paging
> >>> enabled
> >>>
> >>> starting up libvirtd:
> >>>
> >>> May 1 23:21:23 localhost kernel: [ 844.527695] Bridge firewalling
> >>> registered May 1 23:21:23 localhost kernel: [ 844.537781] tun:
> >>> Universal TUN/TAP device driver, 1.6
> >>> May 1 23:21:23 localhost kernel: [ 844.537784] tun: (C) 1999-2004 Max
> >>> Krasnyansky <maxk at qualcomm.com>
> >>> May 1 23:21:23 localhost avahi-daemon[1370]: Withdrawing workstation
> >>> service for .
> >>> May 1 23:21:23 localhost avahi-daemon[1370]: Withdrawing workstation
> >>> service for virbr0.
> >>> May 1 23:21:23 localhost kernel: [ 844.737116] ip_tables: (C)
> >>> 2000-2006 Netfilter Core Team
> >>> May 1 23:21:23 localhost kernel: [ 844.752760] ip6_tables: (C)
> >>> 2000-2006 Netfilter Core Team
> >>>
> >>>
> >>> start virt-manager as user but granting root priviliges when asked on
> >>> startup. When creating a new VM it says that KVM is not available.
> >>>
> >>> qemu -enable-kvm has worked fine so far.
> >>>
> >>> Why is that error message?
> >>>
> >>> Thanks,
> >>>
> >>> Florian
> >>
> >> That error means that libvirt did not detect KVM support. Libvirt checks
> >> for a /usr/bin/qemu* binary, /dev/kvm, and proper permissions to run
> >> both.
> >
> > Permissions should be fine:
> >
> > florian at horus ~ % groups
> > sys kvm scanner florian
> >
> > florian at horus ~ % ll /dev/kvm
> > crw-rw----+ 1 root kvm 10, 232 2. Mai 21:04 /dev/kvm
> >
> > florian at horus ~ % ll /usr/bin/qemu*
> > -rwxr-xr-x 1 root root 2961888 21. Feb 21:10 /usr/bin/qemu*
> > [...]
> > -rwxr-xr-x 1 root root 3033280 21. Feb 21:10 /usr/bin/qemu-system-x86_64*
> > -rwxr-xr-x 1 root root 2055048 21. Feb 21:10 /usr/bin/qemu-x86_64*
> >
> >> What's the output of virsh --connect qemu:///session capabilities | grep
> >> kvm and virsh --connect qemu:///system capabilities | grep kvm ?
> >
> > They both return nothing, run as user as well as being run as root. When
> > run as user the second commands asks for root priviliges which are
> > granted.
>
> Hmm, full output of virsh --connect qemu:///system capabilities (as
> root) and qemu-system-x86_64 -help would be interesting.
Hey!
both commands outputs are below.
Thanks!
Florian
root at horus /home/florian # virsh --connect qemu:///system capabilities
<capabilities>
<host>
<uuid>30303234-3144-4437-3039-3942ffffffff</uuid>
<cpu>
<arch>x86_64</arch>
<model>Opteron_G3</model>
<vendor>AMD</vendor>
<topology sockets='1' cores='4' threads='1'/>
<feature name='wdt'/>
<feature name='skinit'/>
<feature name='osvw'/>
<feature name='3dnowprefetch'/>
<feature name='cr8legacy'/>
<feature name='extapic'/>
<feature name='cmp_legacy'/>
<feature name='3dnow'/>
<feature name='3dnowext'/>
<feature name='pdpe1gb'/>
<feature name='fxsr_opt'/>
<feature name='mmxext'/>
<feature name='ht'/>
<feature name='vme'/>
</cpu>
<migration_features>
<live/>
<uri_transports>
<uri_transport>tcp</uri_transport>
</uri_transports>
</migration_features>
</host>
<guest>
<os_type>hvm</os_type>
<arch name='i686'>
<wordsize>32</wordsize>
<emulator>/usr/bin/qemu</emulator>
<machine>pc-0.14</machine>
<machine canonical='pc-0.14'>pc</machine>
<machine>pc-0.13</machine>
<machine>pc-0.12</machine>
<machine>pc-0.11</machine>
<machine>pc-0.10</machine>
<machine>isapc</machine>
<domain type='qemu'>
</domain>
</arch>
<features>
<cpuselection/>
<deviceboot/>
<pae/>
<nonpae/>
<acpi default='on' toggle='yes'/>
<apic default='on' toggle='no'/>
</features>
</guest>
<guest>
<os_type>hvm</os_type>
<arch name='x86_64'>
<wordsize>64</wordsize>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<machine>pc-0.14</machine>
<machine canonical='pc-0.14'>pc</machine>
<machine>pc-0.13</machine>
<machine>pc-0.12</machine>
<machine>pc-0.11</machine>
<machine>pc-0.10</machine>
<machine>isapc</machine>
<domain type='qemu'>
</domain>
</arch>
<features>
<cpuselection/>
<deviceboot/>
<acpi default='on' toggle='yes'/>
<apic default='on' toggle='no'/>
</features>
</guest>
<guest>
<os_type>hvm</os_type>
<arch name='arm'>
<wordsize>32</wordsize>
<emulator>/usr/bin/qemu-system-arm</emulator>
<machine>integratorcp</machine>
<machine>syborg</machine>
<machine>musicpal</machine>
<machine>mainstone</machine>
<machine>n800</machine>
<machine>n810</machine>
<machine>cheetah</machine>
<machine>sx1</machine>
<machine>sx1-v1</machine>
<machine>tosa</machine>
<machine>akita</machine>
<machine>spitz</machine>
<machine>borzoi</machine>
<machine>terrier</machine>
<machine>connex</machine>
<machine>verdex</machine>
<machine>lm3s811evb</machine>
<machine>lm3s6965evb</machine>
<machine>realview-eb</machine>
<machine>realview-eb-mpcore</machine>
<machine>realview-pb-a8</machine>
<machine>realview-pbx-a9</machine>
<machine>versatilepb</machine>
<machine>versatileab</machine>
<domain type='qemu'>
</domain>
</arch>
<features>
<deviceboot/>
</features>
</guest>
<guest>
<os_type>hvm</os_type>
<arch name='mips'>
<wordsize>32</wordsize>
<emulator>/usr/bin/qemu-system-mips</emulator>
<machine>malta</machine>
<machine>mipssim</machine>
<machine>magnum</machine>
<machine>pica61</machine>
<machine>mips</machine>
<domain type='qemu'>
</domain>
</arch>
<features>
<deviceboot/>
</features>
</guest>
<guest>
<os_type>hvm</os_type>
<arch name='mipsel'>
<wordsize>32</wordsize>
<emulator>/usr/bin/qemu-system-mipsel</emulator>
<machine>malta</machine>
<machine>mipssim</machine>
<machine>magnum</machine>
<machine>pica61</machine>
<machine>mips</machine>
<domain type='qemu'>
</domain>
</arch>
<features>
<deviceboot/>
</features>
</guest>
<guest>
<os_type>hvm</os_type>
<arch name='sparc'>
<wordsize>32</wordsize>
<emulator>/usr/bin/qemu-system-sparc</emulator>
<machine>SS-5</machine>
<machine>leon3_generic</machine>
<machine>SS-10</machine>
<machine>SS-600MP</machine>
<machine>SS-20</machine>
<machine>Voyager</machine>
<machine>LX</machine>
<machine>SS-4</machine>
<machine>SPARCClassic</machine>
<machine>SPARCbook</machine>
<machine>SS-1000</machine>
<machine>SS-2000</machine>
<machine>SS-2</machine>
<domain type='qemu'>
</domain>
</arch>
</guest>
<guest>
<os_type>hvm</os_type>
<arch name='ppc'>
<wordsize>32</wordsize>
<emulator>/usr/bin/qemu-system-ppc</emulator>
<machine>g3beige</machine>
<machine>virtex-ml507</machine>
<machine>mpc8544ds</machine>
<machine canonical='bamboo-0.13'>bamboo</machine>
<machine>bamboo-0.13</machine>
<machine>bamboo-0.12</machine>
<machine>ref405ep</machine>
<machine>taihu</machine>
<machine>mac99</machine>
<machine>prep</machine>
<domain type='qemu'>
</domain>
</arch>
<features>
<deviceboot/>
</features>
</guest>
</capabilities>
----------------------------------------------------
root at horus /home/florian # qemu-system-x86_64 -help
QEMU emulator version 0.14.0, Copyright (c) 2003-2008 Fabrice Bellard
usage: qemu [options] [disk_image]
'disk_image' is a raw hard disk image for IDE hard disk 0
Standard options:
-h or -help display this help and exit
-version display version information and exit
-M machine select emulated machine (-M ? for list)
-cpu cpu select CPU (-cpu ? for list)
-smp n[,maxcpus=cpus][,cores=cores][,threads=threads][,sockets=sockets]
set the number of CPUs to 'n' [default=1]
maxcpus= maximum number of total cpus, including
offline CPUs for hotplug, etc
cores= number of CPU cores on one socket
threads= number of threads on one CPU core
sockets= number of discrete sockets in the system
-numa node[,mem=size][,cpus=cpu[-cpu]][,nodeid=node]
-fda/-fdb file use 'file' as floppy disk 0/1 image
-hda/-hdb file use 'file' as IDE hard disk 0/1 image
-hdc/-hdd file use 'file' as IDE hard disk 2/3 image
-cdrom file use 'file' as IDE cdrom image (cdrom is ide1 master)
-drive [file=file][,if=type][,bus=n][,unit=m][,media=d][,index=i]
[,cyls=c,heads=h,secs=s[,trans=t]][,snapshot=on|off]
[,cache=writethrough|writeback|none|unsafe][,format=f]
[,serial=s][,addr=A][,id=name][,aio=threads|native]
[,readonly=on|off]
use 'file' as a drive image
-set group.id.arg=value
set <arg> parameter for item <id> of type <group>
i.e. -set drive.$id.file=/path/to/image
-global driver.property=value
set a global default for a driver property
-mtdblock file use 'file' as on-board Flash memory image
-sd file use 'file' as SecureDigital card image
-pflash file use 'file' as a parallel flash image
-boot [order=drives][,once=drives][,menu=on|off]
'drives': floppy (a), hard disk (c), CD-ROM (d), network (n)
-snapshot write to temporary files instead of disk image files
-m megs set virtual RAM size to megs MB [default=128]
-mem-path FILE provide backing storage for guest RAM
-mem-prealloc preallocate guest memory (use with -mem-path)
-k language use keyboard layout (for example 'fr' for French)
-audio-help print list of audio drivers and their options
-soundhw c1,... enable audio support
and only specified sound cards (comma separated list)
use -soundhw ? to get the list of supported cards
use -soundhw all to enable all of them
-usb enable the USB driver (will be the default soon)
-usbdevice name add the host or guest USB device 'name'
-device driver[,prop[=value][,...]]
add device (based on driver)
prop=value,... sets driver properties
use -device ? to print all possible drivers
use -device driver,? to print all possible properties
File system options:
-fsdev local,id=id,path=path,security_model=[mapped|passthrough|none]
Virtual File system pass-through options:
-virtfs local,path=path,mount_tag=tag,security_model=[mapped|passthrough|none]
-name string1[,process=string2]
set the name of the guest
string1 sets the window title and string2 the process name (on
Linux)
-uuid %08x-%04x-%04x-%04x-%012x
specify machine UUID
Display options:
-nographic disable graphical output and redirect serial I/Os to console
-curses use a curses/ncurses interface instead of SDL
-no-frame open SDL window without a frame and window decorations
-alt-grab use Ctrl-Alt-Shift to grab mouse (instead of Ctrl-Alt)
-ctrl-grab use Right-Ctrl to grab mouse (instead of Ctrl-Alt)
-no-quit disable SDL window close capability
-sdl enable SDL
-spice <args> enable spice
-portrait rotate graphical output 90 deg left (only PXA LCD)
-vga [std|cirrus|vmware|qxl|xenfb|none]
select video card type
-full-screen start in full screen
-g WxH[xDEPTH] Set the initial graphical resolution and depth
-vnc display start a VNC server on display
i386 target only:
-win2k-hack use it when installing Windows 2000 to avoid a disk full bug
-no-fd-bootchk disable boot signature checking for floppy disks
-no-acpi disable ACPI
-no-hpet disable HPET
-balloon none disable balloon device
-balloon virtio[,addr=str]
enable virtio balloon device (default)
-acpitable [sig=str][,rev=n][,oem_id=str][,oem_table_id=str][,oem_rev=n]
[,asl_compiler_id=str][,asl_compiler_rev=n][,data=file1[:file2]...]
ACPI table description
-smbios file=binary
load SMBIOS entry from binary file
-smbios type=0[,vendor=str][,version=str][,date=str][,release=%d.%d]
specify SMBIOS type 0 fields
-smbios type=1[,manufacturer=str][,product=str][,version=str][,serial=str]
[,uuid=uuid][,sku=str][,family=str]
specify SMBIOS type 1 fields
Network options:
-net nic[,vlan=n][,macaddr=mac][,model=type][,name=str][,addr=str][,vectors=v]
create a new Network Interface Card and connect it to VLAN 'n'
-net user[,vlan=n][,name=str][,net=addr[/mask]][,host=addr][,restrict=y|n]
[,hostname=host][,dhcpstart=addr][,dns=addr][,tftp=dir][,bootfile=f]
[,hostfwd=rule][,guestfwd=rule][,smb=dir[,smbserver=addr]]
connect the user mode network stack to VLAN 'n', configure its
DHCP server and enabled optional services
-net tap[,vlan=n][,name=str][,fd=h][,ifname=name][,script=file]
[,downscript=dfile][,sndbuf=nbytes][,vnet_hdr=on|off][,vhost=on|off][,vhostfd=h]
[,vhostforce=on|off]
connect the host TAP network interface to VLAN 'n' and use the
network scripts 'file' (default=/etc/qemu-ifup)
and 'dfile' (default=/etc/qemu-ifdown)
use '[down]script=no' to disable script execution
use 'fd=h' to connect to an already opened TAP interface
use 'sndbuf=nbytes' to limit the size of the send buffer (the
default is disabled 'sndbuf=0' to enable flow control set
'sndbuf=1048576')
use vnet_hdr=off to avoid enabling the IFF_VNET_HDR tap flag
use vnet_hdr=on to make the lack of IFF_VNET_HDR support an
error condition
use vhost=on to enable experimental in kernel accelerator
(only has effect for virtio guests which use MSIX)
use vhostforce=on to force vhost on for non-MSIX virtio guests
use 'vhostfd=h' to connect to an already opened vhost net
device
-net socket[,vlan=n][,name=str][,fd=h][,listen=[host]:port]
[,connect=host:port]
connect the vlan 'n' to another VLAN using a socket connection
-net socket[,vlan=n][,name=str][,fd=h][,mcast=maddr:port[,localaddr=addr]]
connect the vlan 'n' to multicast maddr and port
use 'localaddr=addr' to specify the host address to send
packets from
-net vde[,vlan=n][,name=str][,sock=socketpath][,port=n][,group=groupname]
[,mode=octalmode]
connect the vlan 'n' to port 'n' of a vde switch running
on host and listening for incoming connections on
'socketpath'.
Use group 'groupname' and mode 'octalmode' to change default
ownership and permissions for communication port.
-net dump[,vlan=n][,file=f][,len=n]
dump traffic on vlan 'n' to file 'f' (max n bytes per packet)
-net none use it alone to have zero network devices. If no -net option
is provided, the default is '-net nic -net user'
-netdev [user|tap|vde|socket],id=str[,option][,option][,...]
Character device options:
-chardev null,id=id[,mux=on|off]
-chardev socket,id=id[,host=host],port=host[,to=to][,ipv4][,ipv6][,nodelay]
[,server][,nowait][,telnet][,mux=on|off] (tcp)
-chardev socket,id=id,path=path[,server][,nowait][,telnet],[mux=on|off] (unix)
-chardev udp,id=id[,host=host],port=port[,localaddr=localaddr]
[,localport=localport][,ipv4][,ipv6][,mux=on|off]
-chardev msmouse,id=id[,mux=on|off]
-chardev vc,id=id[[,width=width][,height=height]][[,cols=cols][,rows=rows]]
[,mux=on|off]
-chardev file,id=id,path=path[,mux=on|off]
-chardev pipe,id=id,path=path[,mux=on|off]
-chardev pty,id=id[,mux=on|off]
-chardev stdio,id=id[,mux=on|off][,signal=on|off]
-chardev tty,id=id,path=path[,mux=on|off]
-chardev parport,id=id,path=path[,mux=on|off]
Bluetooth(R) options:
-bt hci,null dumb bluetooth HCI - doesn't respond to commands
-bt hci,host[:id]
use host's HCI with the given name
-bt hci[,vlan=n]
emulate a standard HCI in virtual scatternet 'n'
-bt vhci[,vlan=n]
add host computer to virtual scatternet 'n' using VHCI
-bt device:dev[,vlan=n]
emulate a bluetooth device 'dev' in scatternet 'n'
Linux/Multiboot boot specific:
-kernel bzImage use 'bzImage' as kernel image
-append cmdline use 'cmdline' as kernel command line
-initrd file use 'file' as initial ram disk
Debug/Expert options:
-serial dev redirect the serial port to char device 'dev'
-parallel dev redirect the parallel port to char device 'dev'
-monitor dev redirect the monitor to char device 'dev'
-qmp dev like -monitor but opens in 'control' mode
-mon chardev=[name][,mode=readline|control][,default]
-debugcon dev redirect the debug console to char device 'dev'
-pidfile file write PID to 'file'
-singlestep always run in singlestep mode
-S freeze CPU at startup (use 'c' to start execution)
-gdb dev wait for gdb connection on 'dev'
-s shorthand for -gdb tcp::1234
-d item1,... output log to /tmp/qemu.log (use -d ? for a list of log items)
-hdachs c,h,s[,t]
force hard disk 0 physical geometry and the optional BIOS
translation (t=none or lba) (usually qemu can guess them)
-L path set the directory for the BIOS, VGA BIOS and keymaps
-bios file set the filename for the BIOS
-enable-kvm enable KVM full virtualization support
-xen-domid id specify xen guest domain id
-xen-create create domain using xen hypercalls, bypassing xend
warning: should not be used when xend is in use
-xen-attach attach to existing xen domain
xend will use this when starting qemu
-no-reboot exit instead of rebooting
-no-shutdown stop before shutdown
-loadvm [tag|id]
start right away with a saved state (loadvm in monitor)
-daemonize daemonize QEMU after initializing
-option-rom rom load a file, rom, into the option ROM space
-clock force the use of the given methods for timer alarm.
To see what timers are available use -clock ?
-rtc [base=utc|localtime|date][,clock=host|vm][,driftfix=none|slew]
set the RTC base and clock, enable drift fix for clock ticks
(x86 only)
-icount [N|auto]
enable virtual instruction counter with 2^N clock ticks per
instruction
-watchdog i6300esb|ib700
enable virtual hardware watchdog [default=none]
-watchdog-action reset|shutdown|poweroff|pause|debug|none
action when watchdog fires [default=reset]
-echr chr set terminal escape character instead of ctrl-a
-virtioconsole c
set virtio console
-show-cursor show cursor
-tb-size n set TB size
-incoming p prepare for incoming migration, listen on port p
-nodefaults don't create default devices
-chroot dir chroot to dir just before starting the VM
-runas user change to user id user just before starting the VM
-prom-env variable=value
set OpenBIOS nvram variables
-semihosting semihosting mode
-old-param old param mode
-readconfig <file>
-writeconfig <file>
read/write config file
-nodefconfig
do not load default config files at startup
During emulation, the following keys are useful:
ctrl-alt-f toggle full screen
ctrl-alt-n switch to virtual console 'n'
ctrl-alt toggle mouse and keyboard grab
When using -nographic, press 'ctrl-a h' to get some help.
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