9:22 a.m.
Hello,
when editing a VM I see in console section that there is an option defined as:
VirtIO Console Device Enabled
By default the checkbox is not selected.
I didn't find clear references to what this option enable/disable
inside the guest...
Thanks in advance for any clarification.
Gianluca
12:23 p.m.
I guess it is for this:
http://www.linux-kvm.com/content/new-virtioconsole-infrastructure-introdu...
The latest release of kvm-84 adds a new virtio console infrastructure to
qemu. This is basically a new hypervisor console output in addition to
the serial and parallel port consoles. You can toggle the display of
these character based consoles by typing ctrl-alt-n where n is the
number assigned to the console. Currently only a single virtual console
is supported for the virtio-console device but the infrastructure allow
for assignment of hardware based consoles in future.
Kind regards,
Jorick Astrego
Netbulae B.V.
On Thu, 2013-12-19 at 17:22 +0100, Gianluca Cecchi wrote:
Hello,
when editing a VM I see in console section that there is an option defined as:
VirtIO Console Device Enabled
By default the checkbox is not selected.
I didn't find clear references to what this option enable/disable
inside the guest...
Thanks in advance for any clarification.
Gianluca
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
1:50 p.m.
On Thu, Dec 19, 2013 at 8:23 PM, Jorick Astrego wrote:
I guess it is for this:
http://www.linux-kvm.com/content/new-virtioconsole-infrastructure-introdu...
It seems you are right.
Going to test, I tried to enable it on a CentOS 6.4 guest named "c6s"
It seems all ok from a guest point of view (apart the tty that seems
not to be automatically spawned from agetty or friend)
I also read
http://fedoraproject.org/wiki/Features/VirtioSerial
But I don't know if this will be usable at this time from oVirt in any way....
[root@c6s ~]# cat /etc/redhat-release
CentOS release 6.4 (Final)
[root@c6s ~]# uname -r
2.6.32-358.18.1.el6.x86_64
[root@c6s ~]# lsmod|grep virtio
virtio_balloon 4798 0
virtio_console 17806 2
virtio_net 16856 0
virtio_blk 7164 3
virtio_scsi 9139 1
virtio_pci 6985 0
virtio_ring 8301 6
virtio_balloon,virtio_console,virtio_net,virtio_blk,virtio_scsi,virtio_pci
virtio 4977 6
virtio_balloon,virtio_console,virtio_net,virtio_blk,virtio_scsi,virtio_pci
[root@c6s ~]# cat /sys/class/virtio-ports/vport0p1/name
com.redhat.rhevm.vdsm
[root@c6s ~]# ll /dev/virtio-ports/com.redhat.rhevm.vdsm
lrwxrwxrwx 1 root root 11 Dec 19 19:42
/dev/virtio-ports/com.redhat.rhevm.vdsm -> ../vport0p1
[root@c6s ~]# ll /dev/hvc*
crw-rw---- 1 root dialout 229, 0 Dec 19 19:42 /dev/hvc0
crw-rw---- 1 root dialout 229, 1 Dec 19 19:42 /dev/hvc1
crw-rw---- 1 root dialout 229, 2 Dec 19 19:42 /dev/hvc2
crw-rw---- 1 root dialout 229, 3 Dec 19 19:42 /dev/hvc3
crw-rw---- 1 root dialout 229, 4 Dec 19 19:42 /dev/hvc4
crw-rw---- 1 root dialout 229, 5 Dec 19 19:42 /dev/hvc5
crw-rw---- 1 root dialout 229, 6 Dec 19 19:42 /dev/hvc6
crw-rw---- 1 root dialout 229, 7 Dec 19 19:42 /dev/hvc7
[root@c6s ~]#
qemu originated command line has
-chardev pty,id=charconsole0 -device
virtconsole,chardev=charconsole0,id=console0
complete is
qemu 3032 1 5 21:30 ? 00:00:38
/usr/bin/qemu-system-x86_64 -machine accel=kvm -name c6s -S -machine
pc-1.0,accel=kvm,usb=off -cpu Opteron_G2 -m 1024 -smp
1,sockets=1,cores=1,threads=1 -uuid
4147e0d3-19a7-447b-9d88-2ff19365bec0 -smbios
type=1,manufacturer=oVirt,product=oVirt
Node,version=19-5,serial=34353439-3036-435A-4A38-303330393338,uuid=4147e0d3-19a7-447b-9d88-2ff19365bec0
-no-user-config -nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/c6s.monitor,server,nowait
-mon chardev=charmonitor,id=monitor,mode=control -rtc
base=2013-12-19T18:42:22,driftfix=slew -no-shutdown -device
piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device
virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x4 -device
virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x6 -drive
if=none,id=drive-ide0-1-0,readonly=on,format=raw,serial= -device
ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -drive
file=/rhev/data-center/mnt/glusterSD/f18ovn01.mydomain:gvdata/d0b96d4a-62aa-4e9f-b50e-f7a0cb5be291/images/a5e4f67b-50b5-4740-9990-39deb8812445/53408cb0-bcd4-40de-bc69-89d59b7b5bc2,if=none,id=drive-virtio-disk0,format=raw,serial=a5e4f67b-50b5-4740-9990-39deb8812445,cache=none,werror=stop,rerror=stop,aio=threads
-device
virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1
-drive
file=/rhev/data-center/mnt/glusterSD/f18ovn01.mydomain:gvdata/d0b96d4a-62aa-4e9f-b50e-f7a0cb5be291/images/c1477133-6b06-480d-a233-1dae08daf8b3/c2a82c64-9dee-42bb-acf2-65b8081f2edf,if=none,id=drive-scsi0-0-0-0,format=raw,serial=c1477133-6b06-480d-a233-1dae08daf8b3,cache=none,werror=stop,rerror=stop,aio=threads
-device
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0
-netdev tap,fd=29,id=hostnet0,vhost=on,vhostfd=30 -device
virtio-net-pci,netdev=hostnet0,id=net0,mac=00:1a:4a:8f:04:f8,bus=pci.0,addr=0x3
-chardev
socket,id=charchannel0,path=/var/lib/libvirt/qemu/channels/4147e0d3-19a7-447b-9d88-2ff19365bec0.com.redhat.rhevm.vdsm,server,nowait
-device
virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.rhevm.vdsm
-chardev
socket,id=charchannel1,path=/var/lib/libvirt/qemu/channels/4147e0d3-19a7-447b-9d88-2ff19365bec0.org.qemu.guest_agent.0,server,nowait
-device
virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,id=channel1,name=org.qemu.guest_agent.0
-chardev spicevmc,id=charchannel2,name=vdagent -device
virtserialport,bus=virtio-serial0.0,nr=3,chardev=charchannel2,id=channel2,name=com.redhat.spice.0
-chardev pty,id=charconsole0 -device
virtconsole,chardev=charconsole0,id=console0 -spice
tls-port=5901,addr=0,x509-dir=/etc/pki/vdsm/libvirt-spice,tls-channel=main,tls-channel=display,tls-channel=inputs,tls-channel=cursor,tls-channel=playback,tls-channel=record,tls-channel=smartcard,tls-channel=usbredir,seamless-migration=on
-k en-us -vga qxl -global qxl-vga.ram_size=67108864 -global
qxl-vga.vram_size=67108864 -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7
Gianluca
2:35 p.m.
On 12/19/2013 03:50 PM, Gianluca Cecchi wrote:
On Thu, Dec 19, 2013 at 8:23 PM, Jorick Astrego wrote:
> I guess it is for this:
>
> http://www.linux-kvm.com/content/new-virtioconsole-infrastructure-introdu...
It seems you are right.
Going to test, I tried to enable it on a CentOS 6.4 guest named "c6s"
It seems all ok from a guest point of view (apart the tty that seems
not to be automatically spawned from agetty or friend)
I also read
http://fedoraproject.org/wiki/Features/VirtioSerial
But I don't know if this will be usable at this time from oVirt in any way....
it replaces the need to do this via a custom hook. its meant to allow
you to connect to serial console, which you can do today if you do it
locally, or put something like conserver, etc.
you are correct that there is still no integrated solution for remote,
secure, access to it.
[root@c6s ~]# cat /etc/redhat-release
CentOS release 6.4 (Final)
[root@c6s ~]# uname -r
2.6.32-358.18.1.el6.x86_64
[root@c6s ~]# lsmod|grep virtio
virtio_balloon 4798 0
virtio_console 17806 2
virtio_net 16856 0
virtio_blk 7164 3
virtio_scsi 9139 1
virtio_pci 6985 0
virtio_ring 8301 6
virtio_balloon,virtio_console,virtio_net,virtio_blk,virtio_scsi,virtio_pci
virtio 4977 6
virtio_balloon,virtio_console,virtio_net,virtio_blk,virtio_scsi,virtio_pci
[root@c6s ~]# cat /sys/class/virtio-ports/vport0p1/name
com.redhat.rhevm.vdsm
[root@c6s ~]# ll /dev/virtio-ports/com.redhat.rhevm.vdsm
lrwxrwxrwx 1 root root 11 Dec 19 19:42
/dev/virtio-ports/com.redhat.rhevm.vdsm -> ../vport0p1
[root@c6s ~]# ll /dev/hvc*
crw-rw---- 1 root dialout 229, 0 Dec 19 19:42 /dev/hvc0
crw-rw---- 1 root dialout 229, 1 Dec 19 19:42 /dev/hvc1
crw-rw---- 1 root dialout 229, 2 Dec 19 19:42 /dev/hvc2
crw-rw---- 1 root dialout 229, 3 Dec 19 19:42 /dev/hvc3
crw-rw---- 1 root dialout 229, 4 Dec 19 19:42 /dev/hvc4
crw-rw---- 1 root dialout 229, 5 Dec 19 19:42 /dev/hvc5
crw-rw---- 1 root dialout 229, 6 Dec 19 19:42 /dev/hvc6
crw-rw---- 1 root dialout 229, 7 Dec 19 19:42 /dev/hvc7
[root@c6s ~]#
qemu originated command line has
-chardev pty,id=charconsole0 -device
virtconsole,chardev=charconsole0,id=console0
complete is
qemu 3032 1 5 21:30 ? 00:00:38
/usr/bin/qemu-system-x86_64 -machine accel=kvm -name c6s -S -machine
pc-1.0,accel=kvm,usb=off -cpu Opteron_G2 -m 1024 -smp
1,sockets=1,cores=1,threads=1 -uuid
4147e0d3-19a7-447b-9d88-2ff19365bec0 -smbios
type=1,manufacturer=oVirt,product=oVirt
Node,version=19-5,serial=34353439-3036-435A-4A38-303330393338,uuid=4147e0d3-19a7-447b-9d88-2ff19365bec0
-no-user-config -nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/c6s.monitor,server,nowait
-mon chardev=charmonitor,id=monitor,mode=control -rtc
base=2013-12-19T18:42:22,driftfix=slew -no-shutdown -device
piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device
virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x4 -device
virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x6 -drive
if=none,id=drive-ide0-1-0,readonly=on,format=raw,serial= -device
ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -drive
file=/rhev/data-center/mnt/glusterSD/f18ovn01.mydomain:gvdata/d0b96d4a-62aa-4e9f-b50e-f7a0cb5be291/images/a5e4f67b-50b5-4740-9990-39deb8812445/53408cb0-bcd4-40de-bc69-89d59b7b5bc2,if=none,id=drive-virtio-disk0,format=raw,serial=a5e4f67b-50b5-4740-9990-39deb8812445,cache=none,werror=stop,rerror=stop,aio=threads
-device
virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1
-drive
file=/rhev/data-center/mnt/glusterSD/f18ovn01.mydomain:gvdata/d0b96d4a-62aa-4e9f-b50e-f7a0cb5be291/images/c1477133-6b06-480d-a233-1dae08daf8b3/c2a82c64-9dee-42bb-acf2-65b8081f2edf,if=none,id=drive-scsi0-0-0-0,format=raw,serial=c1477133-6b06-480d-a233-1dae08daf8b3,cache=none,werror=stop,rerror=stop,aio=threads
-device
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0
-netdev tap,fd=29,id=hostnet0,vhost=on,vhostfd=30 -device
virtio-net-pci,netdev=hostnet0,id=net0,mac=00:1a:4a:8f:04:f8,bus=pci.0,addr=0x3
-chardev
socket,id=charchannel0,path=/var/lib/libvirt/qemu/channels/4147e0d3-19a7-447b-9d88-2ff19365bec0.com.redhat.rhevm.vdsm,server,nowait
-device
virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.rhevm.vdsm
-chardev
socket,id=charchannel1,path=/var/lib/libvirt/qemu/channels/4147e0d3-19a7-447b-9d88-2ff19365bec0.org.qemu.guest_agent.0,server,nowait
-device
virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,id=channel1,name=org.qemu.guest_agent.0
-chardev spicevmc,id=charchannel2,name=vdagent -device
virtserialport,bus=virtio-serial0.0,nr=3,chardev=charchannel2,id=channel2,name=com.redhat.spice.0
-chardev pty,id=charconsole0 -device
virtconsole,chardev=charconsole0,id=console0 -spice
tls-port=5901,addr=0,x509-dir=/etc/pki/vdsm/libvirt-spice,tls-channel=main,tls-channel=display,tls-channel=inputs,tls-channel=cursor,tls-channel=playback,tls-channel=record,tls-channel=smartcard,tls-channel=usbredir,seamless-migration=on
-k en-us -vga qxl -global qxl-vga.ram_size=67108864 -global
qxl-vga.vram_size=67108864 -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7
Gianluca
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3791
days inactive
3791
days old
3 comments
3 participants
participants (3)
-
Gianluca Cecchi -
Itamar Heim -
Jorick Astrego