Xen users - May 2009 - how to set ''extra'' parameter of xen configuration file?

Hi,all

how to set ''extra'' parameter of xen configuration file?
I found several format in this parameter, such as:

extra   = "text
ks=nfs:192.168.1.254:/disk1/yum/centos5/ks.xen.centos5.txt"  or
extra =  "headless ip=dhcp method=nfs:129.158.218.44:/mnt lang=en_US
keymap=us ksdevice=eth0"

Is there a specification to show how to edit this parameter, and to explain what
the content of it mean?

thanks for help!


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2009/5/25 Turinglifer Chu
<Turinglifer@huaweisymantec.com>:
> how to set ''extra'' parameter of xen configuration file?
Depends on how you boot domU. When using pygrub, it needs to be in
domU''s grub.conf. When using kernel on dom0, you can use
"extra"
parameter.
> I found several format in this parameter, such as:
>
> extra   = "text
ks=nfs:192.168.1.254:/disk1/yum/centos5/ks.xen.centos5.txt"
> or
> extra =  "headless ip=dhcp method=nfs:129.158.218.44:/mnt lang=en_US
> keymap=us ksdevice=eth0"
>
> Is there a specification to show how to edit this parameter, and to explain
> what the content of it mean?
Some options are generic to linux, while others depends on what distro
you use. Try
http://fedoraproject.org/wiki/Anaconda/Options
http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Installation_Guide/s1-kickstart2-startinginstall.html
http://tldp.org/HOWTO/BootPrompt-HOWTO.html

-- 
Fajar

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I used virt-install to create a suse10 domU PV guest. 
Here is the problem:

[root@localhost opt]# virt-install
Would you like a fully virtualized guest (yes or no)?  This will allow you to
run unmodified operating systems. no
 What is the name of your virtual machine? suse10
 How much RAM should be allocated (in megabytes)? 512
 What would you like to use as the disk (file path)? /opt/suse10.img
 Would you like to enable graphics support? (yes or no) no
 What is the install location? ftp://129.22.0.201/pxe/suse10_sp1_x86/boot/i386

Starting install...
Retrieving file .treeinfo...                                       0 B 00:00 
Invalid URL location given:
ftp://129.22.0.201/pxe/suse10_sp1_x86/boot/i386/images/xen/vmlinuz [Errno 4]
IOError: [Errno ftp error] 550 Failed to change directory.
Domain installation may not have been
 successful.  If it was, you can restart your domain
 by running ''virsh start suse10''; otherwise, please
 restart your installation.
Mon, 25 May 2009 15:14:17 ERROR    Invalid URL location given:
ftp://129.22.0.201/pxe/suse10_sp1_x86/boot/i386/images/xen/vmlinuz [Errno 4]
IOError: [Errno ftp error] 550 Failed to change directory.
Traceback (most recent call last):
  File "/usr/sbin/virt-install", line 502, in ?
    main()
  File "/usr/sbin/virt-install", line 462, in main
    dom = guest.start_install(conscb,progresscb)
  File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 811,
in start_install
    self._prepare_install(meter)
  File "/usr/lib/python2.4/site-packages/virtinst/ParaVirtGuest.py",
line 56, in _prepare_install
    self._installer.prepare(guest = self, meter = meter)
  File "/usr/lib/python2.4/site-packages/virtinst/DistroManager.py",
line 239, in prepare
    self._prepare_kernel_and_initrd(guest, distro, meter)
  File "/usr/lib/python2.4/site-packages/virtinst/DistroManager.py",
line 209, in _prepare_kernel_and_initrd
    distro = distro)
  File "/usr/lib/python2.4/site-packages/virtinst/DistroManager.py",
line 123, in acquireKernel
    return store.acquireKernel(fetcher, progresscb)
  File "/usr/lib/python2.4/site-packages/virtinst/OSDistro.py", line
62, in acquireKernel
    kernel = fetcher.acquireFile(kernelpath, progresscb)
  File "/usr/lib/python2.4/site-packages/virtinst/ImageFetcher.py",
line 88, in acquireFile
    raise ValueError, _("Invalid URL location given: %s %s") %\
ValueError: Invalid URL location given:
ftp://129.22.0.201/pxe/suse10_sp1_x86/boot/i386/images/xen/vmlinuz [Errno 4]
IOError: [Errno ftp error] 550 Failed to change directory.



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