Stefano Stabellini
2014-Feb-20 16:26 UTC
Re: [Xen-devel] Problem when launch instance in OpenStack when we use xen as virtuallization layer
On Thu, 20 Feb 2014, George Dunlap wrote:> On Wed, Feb 19, 2014 at 1:59 PM, Kai Luo <luokain@gmail.com> wrote: > > Hello all: > > Recently we are trying to deploy OpenStack with xen 4.3.0 as > > virtualization layer, however an error occered when we launch an instance > > from an image.We have confirmed that OpenStack services work fine and the > > problem may lies in the xen layer.We checked the xend log and got the > > following exception: > > I think I would start by asking this on xen-users (CC'd) -- it seems > likely that this is a configuration issue between openstack and Xen, > and there's more expertise for that here than on xen-devel (where we > have more expertise about issues internal to Xen).I would start by switching to the libxl libvirt driver and making sure that libvirt works correctly on its own. I would avoid virt-manager and test using virtsh instead. If this configuration fails for you, what is the error that libxl and/or libvirt reports? Once you have a working libvirt+libxl setup then you might want to try out OpenStack on top of it.> > TapdiskException: ('create', > > '-aqcow2:arbva/instances4b07c5-7443-418b-81c4-a1f55fb264d3/disk') failed > > (32512 ) > > [2014-02-18 21:13:43 11395] DEBUG (XendDomainInfo:3078) > > XendDomainInfo.destroy: domid=21 > > [2014-02-18 21:13:43 11395] DEBUG (XendDomainInfo:2408) No device model > > [2014-02-18 21:13:43 11395] DEBUG (XendDomainInfo:2410) Releasing devices > > [2014-02-18 21:13:43 11395] ERROR (SrvBase:88) Request start failed. > > Traceback (most recent call last): > > File "/usrb/xen-4.3/bin/..b/python/xen/web/SrvBase.py", line 85, in > > perform > > return op_method(op, req) > > File "/usrb/xen-4.3/bin/..b/python/xen/xendrver/SrvDomain.py", line 77, in > > op_start > > return self.xd.domain_start(self.dom.getName(), paused) > > File "/usrb/xen-4.3/bin/..b/python/xen/xend/XendDomain.py", line 1070, in > > domain_start > > dominfo.start(is_managed = True) > > File "/usrb/xen-4.3/bin/..b/python/xen/xend/XendDomainInfo.py", line 474, > > in start > > XendTask.log_progress(31, 60, self._initDomain) > > File "/usrb/xen-4.3/bin/..b/python/xen/xend/XendTask.py", line 209, in > > log_progress > > retval = func(*args, **kwds) > > File "/usrb/xen-4.3/bin/..b/python/xen/xend/XendDomainInfo.py", line 2845, > > in _initDomain > > self._configureBootloader() > > File "/usrb/xen-4.3/bin/..b/python/xen/xend/XendDomainInfo.py", line 3286, > > in _configureBootloader > > mounted_vbd_uuid = dom0.create_vbd(vbd, disk); > > File "/usrb/xen-4.3/bin/..b/python/xen/xend/XendDomainInfo.py", line 3979, > > in create_vbd > > devid = dev_control.createDevice(config) > > File "/usrb/xen-4.3/bin/..b/python/xen/xendrver/BlktapController.py", line > > 172, in createDevice > > device = TapdiskController.create(params, file) > > File "/usrb/xen-4.3/bin/..b/python/xen/xendrver/BlktapController.py", line > > 284, in create > > return TapdiskController.exc('create', '-a%s:%s' % (dtype, image)) > > File "/usrb/xen-4.3/bin/..b/python/xen/xendrver/BlktapController.py", line > > 231, in exc > > (args, rc, out, err)) > > TapdiskException: ('create', > > '-aqcow2:arbva/instances4b07c5-7443-418b-81c4-a1f55fb264d3/disk') failed > > (32512 ) > > [2014-02-18 21:13:44 11395] INFO (XendDomain:1126) Domain instance-00000035 > > (db4b07c5-7443-418b-81c4-a1f55fb264d3) deleted. > > > > We tryed to use image of RAW or QCOW2 format and switch the xen > > toolstack from xm to xl,still did't work.when we switch the toolstack to xl > > and closed the xend service, the virt-manager did not work either.We don't > > know what caused this problem and we know XCP may be a better choice but we > > have to use xen as OpenStack virtualization layer because some modifications > > have made in xen.Could you give any suggestions?