[Xen-devel] Re: No shutdown of domU: xenbus_dev_shutdown: device/console/0: Initialising != Connected, skipping

[Sander Eikelenboom <linux@xxxxxxxxxxxxxx>]

Hmm .. i haven't received any response, is there anyone who could point me to 
the functions involved in communicating the state of the console from 
"initializing" to "connected" ?
That way i could at some additional printk's to find out why the state of domU 
consoles stays "1" instead of "4" in xenstore.

--
Sander

Friday, November 12, 2010, 6:30:10 PM, you wrote:

> I'm encountering the following problem:

> When trying to shutdown a PV domU with more than 1 vpcu, the shutdown fails.
> The domain keeps running with 100% cpu, and it's still possible to get the 
> console of this domU with xm console.
> When only 1 vcpu is assigned the domain does shutdown.

> Last lines of the PV domU console:

> Debian GNU/Linux 5.0 tv hvc0

> INIT: Switching to runlevel: 0
> INIT: Sending processes the TERM signal
> Stopping web server: apache2 ... waiting .
> Stopping MythTV server: mythbackend No /usr/bin/mythbackend found running; 
> none killed.
> .
> Stopping MTA: exim4_listener.
> Stopping rsync daemon: rsync.
> Stopping MySQL database server: mysqld.
> Saving the system clock.
> Cannot access the Hardware Clock via any known method.
> Use the --debug option to see the details of our search for an access method.
> Stopping enhanced syslogd: rsyslogd.
> Asking all remaining processes to terminate...done.
> All processes ended within 2 seconds....done.
> Deconfiguring network interfaces...done.
> Cleaning up ifupdown....
> Deactivating swap...done.
> Unmounting local filesystems...done.
> Will now halt.
> [ 4336.046876] md: stopping all md devices.
> [ 4337.047171] xenbus_dev_shutdown:  trying shutdown of device/console/0: 
> Initialising
> [ 4337.047194] xenbus_dev_shutdown: device/console/0: Initialising != 
> Connected, skipping
> [ 4337.047200] xenbus_dev_shutdown: result of shutdown of device/console/0: 
> Initialising
> [ 4337.047205] xenbus_dev_shutdown:  trying shutdown of device/vif/0: 
> Connected
> [ 4337.110869] xenbus_dev_shutdown: result of shutdown of device/vif/0: Closed
> [ 4337.110883] xenbus_dev_shutdown:  trying shutdown of device/vbd/51714: 
> Connected
> [ 4337.161975] xenbus_dev_shutdown: result of shutdown of device/vbd/51714: 
> Closed
> [ 4337.161989] xenbus_dev_shutdown:  trying shutdown of device/vbd/51713: 
> Connected
> [ 4337.217136] xenbus_dev_shutdown: result of shutdown of device/vbd/51713: 
> Closed
> [ 4337.217167] System halted.


> But when using xenstore-ls .. i see that for every domain (but 1 and multiple 
> vcpu's):
>     - All devices have state=4
>     - Except all backend = "/local/domain/0/backend/console/*/0" entries, 
> those have state=1
>     - Although xenstore is saying the state is initializing .. xm console 
> works perfectly for all domains.
>     - Perhaps this also explains the high event/0 load in dom0, related to 
> tty and xenconsoled ?

> DomU kernels vary from debian 2.6.26-xen kernels, to 2.6.37-rc1 mainline.
> Xen-unstable-tip and xen-next-2.6.32 dom0


> --
> Sander



-- 
Best regards,
 Sander                            mailto:linux@xxxxxxxxxxxxxx


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