[Xen-users] Migration sometimes fails - domU hangs

[Marc A. Müller <Marc.Mueller@xxxxxxxxxxxxxxxx>]

Hi,

 

I'm trying to set up xen using drbd as replication service on two servers.
The system is openSUSE 11.2-64bit (XEN 3.4.1, kernel 2.6.31.8, drbd 8.3.4) on Intel Core 2 machines.

 

Migration sometimes works, sometimes the domU hangs after migration: 'xm list' then shows the state 'r'-running (should be 'b'-blocked, because domU is idle) and the cpu time is running. The domU doesn't respond to any requests, not even 'xm shutdown' works. It happens on live and non-live migration.

 

The only error messages I could see are in /var/log/xen/qemu-dm-test1.log:

-----------------------------------------------------
domid: 2
Warning: vlan 0 is not connected to host network
Using xvda for guest's hda
qemu: type (image format) 'drbd' unknown for vbd '/local/domain/0/backend/vbd/2/51712/mode' or image 'd1'
Watching /local/domain/0/device-model/2/logdirty/next-active
Watching /local/domain/0/device-model/2/command
char device redirected to /dev/pts/3
/usr/src/packages/BUILD/xen-3.4.1-testing/tools/ioemu-dir/hw/xen_blktap.c:715: Init blktap pipes
Could not open /var/run/tap/qemu-read-2
xen be: console-0: connect() failed
xs_read(): vncpasswd get error. /vm/188d6f2c-910c-db01-9973-b662bd5fd357/vncpasswd.
xen be: console-0: connect() failed
xen be: console-0: connect() failed
xen be: console-0: connect() failed
----------------------------------------------------

The "connect() failed" messages only appear when the migration fails.

 

 

 

By the way, on boot of dom0, xend.log shows the warnings:

-----------------------------------------------------
[2010-01-07 14:47:43 3962] WARNING (XendAPI:701) API call: VBD.set_device not found
[2010-01-07 14:47:43 3962] WARNING (XendAPI:701) API call: VBD.set_type not found 
[2010-01-07 14:47:43 3962] WARNING (XendAPI:701) API call: session.get_all_records not found
[2010-01-07 14:47:43 3962] WARNING (XendAPI:701) API call: event.get_record not found
[2010-01-07 14:47:43 3962] WARNING (XendAPI:701) API call: event.get_all not found  
[2010-01-07 14:47:43 3962] WARNING (XendAPI:701) API call: VIF.get_network not found
[2010-01-07 14:47:43 3962] WARNING (XendAPI:701) API call: VIF.set_device not found
[2010-01-07 14:47:43 3962] WARNING (XendAPI:701) API call: VIF.set_MAC not found  
[2010-01-07 14:47:43 3962] WARNING (XendAPI:701) API call: VIF.set_MTU not found
[2010-01-07 14:47:43 3962] WARNING (XendAPI:701) API call: debug.get_all not found
-----------------------------------------------------

Should I worry about these?

 

Thank You,
Marc

 

 

 

 

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