Re: [Xen-devel] [TestDay] xen 4.4 FC3 xl create error

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Tue, 2014-02-04 at 08:26 -0700, Eric Houby wrote:
> Xen list,
> 
> I have a clean F20 install with the RC3 RPMs and see an error when
> starting a VM.  A similar issue was seen with the RC2 RPMs.

Thanks for the report.

> [root@xen ~]# xl create f20.xl
> Parsing config from f20.xl
> libxl: error: libxl_create.c:1054:domcreate_launch_dm: unable to add
> disk devices
> libxl: error: libxl_dm.c:1467:kill_device_model: unable to find device
> model pid in /local/domain/2/image/device-model-pid
> libxl: error: libxl.c:1425:libxl__destroy_domid:
> libxl__destroy_device_model failed for 2
> libxl: error: libxl_device.c:780:libxl__initiate_device_remove: unable
> to get my domid
> libxl: error: libxl.c:1461:devices_destroy_cb: libxl__devices_destroy
> failed for 2
> [root@xen ~]# 
> [root@xen ~]# /usr/bin/xenstore-write "/local/domain/0/domid" 0
> [root@xen ~]# 
> [root@xen ~]# xl create f20.xl
> Parsing config from f20.xl
> [root@xen ~]# 
> [root@xen ~]# 
> [root@xen ~]# xl list
> Name                                        ID   Mem VCPUs    State   Time(s)
> Domain-0                                     0  2047     2     r-----
> 19.7
> f20                                          3  4095     1     r-----
> 4.1
> 
> 
> After running the xenstore-write command VMs start up without issue.

This is a bug in the Fedora versions of the initscripts (or I suppose
these days they are systemd unit files or whatever). The sysvinit
scripts shipped with Xen itself have this write in already.

I see you've already CCd the appropriate Fedora list so I'll leave it to
them to let you know what the end fix should be...

We should probably consider taking some unit files into the xen tree, if
someone wants to submit a set?

Ian.


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