If I create a domain with a vfb:
vfb=[''type=vnc'']
vnc=1
vncpasswd=''''
vnclisten=''0.0.0.0''
then I can no longer access the Xen console:
# xm create -c xenpv64
Using config file "/etc/xen/xenpv64".
Started domain xenpv64 (id=3)
xenconsole: Could not read tty from store: No such file or directory
If I comment out the vfb line, then I can start the domain with a
console as expected.
Diffing xenstore is mostly boring except for:
- console = ""
- ring-ref = "401255"
- port = "2"
- limit = "1048576"
- type = "xenconsoled"
- tty = "/dev/pts/1"
+ console = ""
+ vnc-port = "5900"
+ ring-ref = "277012"
+ port = "2"
+ limit = "1048576"
+ type = "ioemu"
Can I have both at once?
J
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Hi,> - type = "xenconsoled" > - tty = "/dev/pts/1"> + console = "" > + type = "ioemu"Should work, yes. qemu-dm is supposed to write the tty to xenstore as well (xenstore.c, xenstore_store_serial_port_info()), so xenconsole can connect. Something is wrong here ... cheers, Gerd _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Something to do with Stefano''s recent changes to enable extra serial ports etc on HVM leaking through into PV land? On Thu, 2009-07-02 at 23:22 +0100, Jeremy Fitzhardinge wrote:> If I create a domain with a vfb: > > vfb=[''type=vnc''] > vnc=1 > vncpasswd='''' > vnclisten=''0.0.0.0'' > > then I can no longer access the Xen console: > > # xm create -c xenpv64 > Using config file "/etc/xen/xenpv64". > Started domain xenpv64 (id=3) > xenconsole: Could not read tty from store: No such file or directory > > If I comment out the vfb line, then I can start the domain with a > console as expected. > > Diffing xenstore is mostly boring except for: > > - console = "" > - ring-ref = "401255" > - port = "2" > - limit = "1048576" > - type = "xenconsoled" > - tty = "/dev/pts/1" > > + console = "" > + vnc-port = "5900" > + ring-ref = "277012" > + port = "2" > + limit = "1048576" > + type = "ioemu" > > Can I have both at once? > > J_______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Stefano Stabellini
2009-Jul-03 11:38 UTC
Re: [Xen-devel] vfb console inhibiting Xen console?
On Thu, 2 Jul 2009, Jeremy Fitzhardinge wrote:> If I create a domain with a vfb: > > vfb=[''type=vnc''] > vnc=1 > vncpasswd='''' > vnclisten=''0.0.0.0'' > > then I can no longer access the Xen console: > > # xm create -c xenpv64 > Using config file "/etc/xen/xenpv64". > Started domain xenpv64 (id=3) > xenconsole: Could not read tty from store: No such file or directory > > If I comment out the vfb line, then I can start the domain with a > console as expected. > > Diffing xenstore is mostly boring except for: > > - console = "" > - ring-ref = "401255" > - port = "2" > - limit = "1048576" > - type = "xenconsoled" > - tty = "/dev/pts/1" > > + console = "" > + vnc-port = "5900" > + ring-ref = "277012" > + port = "2" > + limit = "1048576" > + type = "ioemu" > > Can I have both at once? >Yes, you can. Check that /local/domain/$DOMID/serial/0/tty exists and contains the tty path in dom0. If you specify vfb in your config file then qemu provides the console backend and creates that node on xenstore that specify the tty device path. I just tried to start a pv guest with a vfb and didn''t have any problem connecting to the console, maybe you don''t have an updated qemu tree? _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Jeremy Fitzhardinge
2009-Jul-03 17:14 UTC
Re: [Xen-devel] vfb console inhibiting Xen console?
On 07/03/09 04:38, Stefano Stabellini wrote:> Yes, you can. > Check that /local/domain/$DOMID/serial/0/tty exists and contains the > tty path in dom0. > If you specify vfb in your config file then qemu provides the console > backend and creates that node on xenstore that specify the tty device > path. > I just tried to start a pv guest with a vfb and didn''t have any problem > connecting to the console, maybe you don''t have an updated qemu tree? >I can never tell whether the versions match up or not. I did a clean build and it appeared to do some git pulling. But I just did an specific "git pull" in ioemu-remote, and the behaviour has changed. Now with a vfb it seems to hang forever: the domain appears to boot, but there''s no console output, and it doesn''t seem to have brought up its network. There''s nothing on the vfb either. /local/domain/$DOMID/serial/0/tty has /dev/pts/1, which the xenconsole process has open. If I remove the vfb in the config, it works as expected. J _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
Stefano Stabellini
2009-Jul-06 09:58 UTC
Re: [Xen-devel] vfb console inhibiting Xen console?
On Fri, 3 Jul 2009, Jeremy Fitzhardinge wrote:> On 07/03/09 04:38, Stefano Stabellini wrote: > > Yes, you can. > > Check that /local/domain/$DOMID/serial/0/tty exists and contains the > > tty path in dom0. > > If you specify vfb in your config file then qemu provides the console > > backend and creates that node on xenstore that specify the tty device > > path. > > I just tried to start a pv guest with a vfb and didn''t have any problem > > connecting to the console, maybe you don''t have an updated qemu tree? > > > > I can never tell whether the versions match up or not. I did a clean > build and it appeared to do some git pulling. > > But I just did an specific "git pull" in ioemu-remote, and the behaviour > has changed. Now with a vfb it seems to hang forever: the domain > appears to boot, but there''s no console output, and it doesn''t seem to > have brought up its network. There''s nothing on the vfb either. > /local/domain/$DOMID/serial/0/tty has /dev/pts/1, which the xenconsole > process has open. > > If I remove the vfb in the config, it works as expected.What are the command line options to qemu in dom0? Is fbcon loaded in the guest? Could you please also send me the qemu log (/var/log/xen/qemu-dm-$DOMID.log)? _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel