Xen users - Mar 2008 - console output stops but everything else is fine

Hello,

just finished building Xen 3.2, everything went fine, except for this:
anytime I create a vm with the --console option, the output of the scroll of
the bootstrap stops like this:

...
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
Freeing unused kernel memory: 128k freed

at this point the console hangs and I just have to close it;
but the dom0  is successfully created and everything seems fine..
is this something I should be worried?

nothing like this happened with old Xen 3.1 (not compiled) or with distro
Xen

Thanks in advance, any idea appreciated.

-- 
Edoardo Ceccarelli - eddy@axa.it


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Check the inittab of the xen instance and also the options to pygrub
if you are using pygrub.  It appears that output is getting
redirected to a non-existent console device somewhere.  If there
are any co: lines in the inittab of the domU you should take them out,
also if there are any console=ttyS0 lines in the grub.conf of
pygrub take them out

Steve


On Mon, 31 Mar 2008, Edoardo Ceccarelli wrote:
> Hello,
>
> just finished building Xen 3.2, everything went fine, except for this:
> anytime I create a vm with the --console option, the output of the scroll
of
> the bootstrap stops like this:
>
> ...
> kjournald starting.  Commit interval 5 seconds
> EXT3-fs: mounted filesystem with ordered data mode.
> VFS: Mounted root (ext3 filesystem) readonly.
> Freeing unused kernel memory: 128k freed
>
> at this point the console hangs and I just have to close it;
> but the dom0  is successfully created and everything seems fine..
> is this something I should be worried?
>
> nothing like this happened with old Xen 3.1 (not compiled) or with distro
> Xen
>
> Thanks in advance, any idea appreciated.
>
>
-- 
------------------------------------------------------------------
Steven C. Timm, Ph.D  (630) 840-8525
timm@fnal.gov  http://home.fnal.gov/~timm/
Fermilab Computing Division, Scientific Computing Facilities,
Grid Facilities Department, FermiGrid Services Group, Assistant Group Leader.

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I am not using pygrub (or at least I am not aware of), the .conf file I give
xen is:

kernel = "/boot/vmlinuz-2.6.18.8-xenU"
memory = 2048
#memory = 512
vif = [ ''bridge=xenbr0'', ]
disk = [''phy:vm_volumes/vm2_root,sda1,w'',
''phy:vm_volumes/vm2_swap,sda2,w'']
root = "/dev/sda1 ro"
extra = "fastboot"

and the inittab looks like this (it is a jailtime.org COS5 64bit image):

id:3:initdefault:

# System initialization.
si::sysinit:/etc/rc.d/rc.sysinit

l0:0:wait:/etc/rc.d/rc 0
l1:1:wait:/etc/rc.d/rc 1
l2:2:wait:/etc/rc.d/rc 2
l3:3:wait:/etc/rc.d/rc 3
l4:4:wait:/etc/rc.d/rc 4
l5:5:wait:/etc/rc.d/rc 5
l6:6:wait:/etc/rc.d/rc 6

# Trap CTRL-ALT-DELETE
ca::ctrlaltdel:/sbin/shutdown -t3 -r now

pf::powerfail:/sbin/shutdown -f -h +2 "Power Failure; System Shutting
Down"
# If power was restored before the shutdown kicked in, cancel it.
pr:12345:powerokwait:/sbin/shutdown -c "Power Restored; Shutdown
Cancelled"

# Run gettys in standard runlevels
1:2345:respawn:/sbin/mingetty tty1
2:2345:respawn:/sbin/mingetty tty2
3:2345:respawn:/sbin/mingetty tty3
4:2345:respawn:/sbin/mingetty tty4
5:2345:respawn:/sbin/mingetty tty5
6:2345:respawn:/sbin/mingetty tty6

# Run xdm in runlevel 5
x:5:respawn:/etc/X11/prefdm -nodaemon


On Mon, Mar 31, 2008 at 6:40 PM, Steven Timm <timm@fnal.gov> wrote:
> Check the inittab of the xen instance and also the options to pygrub
> if you are using pygrub.  It appears that output is getting
> redirected to a non-existent console device somewhere.  If there
> are any co: lines in the inittab of the domU you should take them out,
> also if there are any console=ttyS0 lines in the grub.conf of
> pygrub take them out
>
> Steve
>
>
> On Mon, 31 Mar 2008, Edoardo Ceccarelli wrote:
>
> > Hello,
> >
> > just finished building Xen 3.2, everything went fine, except for this:
> > anytime I create a vm with the --console option, the output of the
> scroll of
> > the bootstrap stops like this:
> >
> > ...
> > kjournald starting.  Commit interval 5 seconds
> > EXT3-fs: mounted filesystem with ordered data mode.
> > VFS: Mounted root (ext3 filesystem) readonly.
> > Freeing unused kernel memory: 128k freed
> >
> > at this point the console hangs and I just have to close it;
> > but the dom0  is successfully created and everything seems fine..
> > is this something I should be worried?
> >
> > nothing like this happened with old Xen 3.1 (not compiled) or with
> distro
> > Xen
> >
> > Thanks in advance, any idea appreciated.
> >
> >
>
> --
> ------------------------------------------------------------------
> Steven C. Timm, Ph.D  (630) 840-8525
> timm@fnal.gov  http://home.fnal.gov/~timm/
<http://home.fnal.gov/%7Etimm/>
> Fermilab Computing Division, Scientific Computing Facilities,
> Grid Facilities Department, FermiGrid Services Group, Assistant Group
> Leader.
>


-- 
Edoardo Ceccarelli - eddy@axa.it


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http://lists.xensource.com/xen-users

Hi,

recent xen kernels are trying to assign a console on xvc0 instead of tty1.


Edoardo Ceccarelli schrieb:
> I am not using pygrub (or at least I am not aware of), the .conf file I 
> give xen is:
> 
> kernel = "/boot/vmlinuz-2.6.18.8-xenU"
> memory = 2048
> #memory = 512
> vif = [ ''bridge=xenbr0'', ]
> disk = [''phy:vm_volumes/vm2_root,sda1,w'',
''phy:vm_volumes/vm2_swap,sda2,w'']
> root = "/dev/sda1 ro"
> extra = "fastboot"
I don''t know the fastboot parameter, but try to use
extra = "xencons=tty1"
or ...
extra = "fastboot xencons=tty1"

alternatively, add a getty on xvc0 to your guests inittab and
add xvc0 to /etc/securetty

> and the inittab looks like this (it is a jailtime.org 
> <http://jailtime.org> COS5 64bit image):
Cheers,

Stephan



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Perfect!
it worked, thanks a lot!


I don''t know the fastboot parameter, but try to
use
> extra = "xencons=tty1"
> or ...
> extra = "fastboot xencons=tty1"
>
> alternatively, add a getty on xvc0 to your guests inittab and
> add xvc0 to /etc/securetty
>
>
> > and the inittab looks like this (it is a jailtime.org
> > <http://jailtime.org> COS5 64bit image):
>
> Cheers,
>
> Stephan
>


-- 
Edoardo Ceccarelli - eddy@axa.it


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