Re: [Fedora-xen] First VM error: No such domain vmguest1

[Chris Lalancette]

Peter Guthrie wrote:
>  
>  Can anyone help with the following error I get when trying to create my 
>  first VM.
>  
>  Xen0 host is FC5 x86_64 on a dual cpu, dual core opteron 275 with 4Gb of 
>  memory up to date with patches.
>  
>  # uname -a
>  Linux dhcp-201.local.net 2.6.17-1.2157_FC5xen0 #1 SMP Tue Jul 11 
>  23:30:05 EDT 2006 x86_64 x86_64 x86_64 GNU/Linux
>  
>  # xenguest-install.py
>  What is the name of your virtual machine? vmguest1
>  How much RAM should be allocated (in megabytes)? 512
>  What would you like to use as the disk (path)? /var/tmp/vmguest1-disk
>  How large would you like the disk to be (in gigabytes)? 8
>  What is the install location? 
>  http://zeniiia.linux.org.uk/pub/distributions/fedora/linux/core/5/i386/os/
>  
>  
>  Starting install...
>  libvir: Xen Daemon error : POST operation failed: No such domain vmguest1
>  Failed to get devices for domain vmguest1
>  Traceback (most recent call last):
>   File "/usr/sbin/xenguest-install.py", line 460, in ?
>     main()
>   File "/usr/sbin/xenguest-install.py", line 451, in main
>     start_paravirt_install(name, ram, disk, mac, uuid, src, options.extra)
>   File "/usr/sbin/xenguest-install.py", line 331, in start_paravirt_install
>     dom = conn.createLinux(cfgxml, 0)
>   File "/usr/lib64/python2.4/site-packages/libvirt.py", line 233, in 
>  createLinux    if ret is None:raise libvirtError('virDomainCreateLinux() 
>  failed')
>  libvirt.libvirtError: virDomainCreateLinux() failed
>  
>  Here's the output from 'xm log':
>  
>  [2006-08-10 16:47:50 xend.XendDomainInfo] DEBUG (XendDomainInfo:1216) 
>  XendDomainInfo.construct: None
>  [2006-08-10 16:47:50 xend.XendDomainInfo] DEBUG (XendDomainInfo:1248) 
>  XendDomainInfo.initDomain: 1 1.0
>  [2006-08-10 16:47:50 xend] DEBUG (balloon:134) Balloon: free 128; need 
>  513; retries: 10.
>  [2006-08-10 16:47:50 xend] DEBUG (balloon:143) Balloon: setting dom0 
>  target to 3393.
>  [2006-08-10 16:47:50 xend.XendDomainInfo] DEBUG (XendDomainInfo:987) 
>  Setting memory target of domain Domain-0 (0) to 3393 MiB.
>  [2006-08-10 16:47:50 xend] DEBUG (balloon:128) Balloon: free 513; need 
>  513; done.
>  [2006-08-10 16:47:50 xend] INFO (image:134) buildDomain os=linux dom=1 
>  vcpus=1
>  [2006-08-10 16:47:50 xend] DEBUG (image:177) dom            = 1
>  [2006-08-10 16:47:50 xend] DEBUG (image:178) image          = 
>  /var/lib/xen/vmlinuz.i0GIQN
>  [2006-08-10 16:47:50 xend] DEBUG (image:179) store_evtchn   = 1
>  [2006-08-10 16:47:50 xend] DEBUG (image:180) console_evtchn = 2
>  [2006-08-10 16:47:50 xend] DEBUG (image:181) cmdline        =   
>  root=/dev/xvd 
>  method=http://zeniiia.linux.org.uk/pub/distributions/fedora/linux/core/5/i386/os/ 
>  
>  [2006-08-10 16:47:50 xend] DEBUG (image:182) ramdisk        = 
>  /var/lib/xen/initrd.img.4rNZB1
>  [2006-08-10 16:47:50 xend] DEBUG (image:183) vcpus          = 1
>  [2006-08-10 16:47:50 xend] DEBUG (image:184) features       =
>  [2006-08-10 16:47:50 xend.XendDomainInfo] ERROR (XendDomainInfo:197) 
>  Domain construction failed
>  Traceback (most recent call last):
>   File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", 
>  line 190, in create
>     vm.initDomain()
>   File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", 
>  line 1311, in initDomain
>     raise VmError(str(exn))
>  VmError: (9, \047Bad file descriptor\047)
>  [2006-08-10 16:47:50 xend.XendDomainInfo] DEBUG (XendDomainInfo:1397) 
>  XendDomainInfo.destroy: domid=1
>  [2006-08-10 16:47:50 xend.XendDomainInfo] DEBUG (XendDomainInfo:1405) 
>  XendDomainInfo.destroyDomain(1)
>  [2006-08-10 16:47:50 xend] ERROR (SrvBase:87) Request create failed.
>  Traceback (most recent call last):
>   File "/usr/lib64/python2.4/site-packages/xen/web/SrvBase.py", line 85, 
>  in perform
>     return op_method(op, req)
>   File 
>  "/usr/lib64/python2.4/site-packages/xen/xend/server/SrvDomainDir.py", 
>  line 82, in op_create
>     raise XendError("Error creating domain: " + str(ex))
>  XendError: Error creating domain: (9, \047Bad file descriptor\047)
>  
>  
>  Looks like some sort of path error creating one of the files.
>  
>  Peter
>  
>  -- 
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>  Fedora-xen(a)redhat.com
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Peter,
     Could you take a look at /var/log/xend-debug.log?  My guess is that there are lines
in there saying:

ERROR: Non PAE-kernel on PAE host.
ERROR: Error constructing guest OS

During the development of FC6, we decided to turn on PAE, but as the message above says,
non-PAE kernels (i.e. FC5 kernels) will not boot on PAE hypervisors.  Therefore, you will
not be able to install an FC5 guest with an FC6 Hypervisor and dom0.  You will need to
point your installation to an FC6 development tree, which should have PAE enabled
kernels.

Chris Lalancette