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Re: [Xen-users] Unable to create (and keep) guest


  • To: xen-users@xxxxxxxxxxxxxxxxxxx, Dermot <paikkos@xxxxxxxxx>
  • From: Boris Derzhavets <bderzhavets@xxxxxxxxx>
  • Date: Fri, 5 Nov 2010 09:17:26 -0700 (PDT)
  • Cc:
  • Delivery-date: Fri, 05 Nov 2010 09:18:46 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Are you able to create Ubuntu 10.10 HVM guest ?

Boris.

--- On Fri, 11/5/10, Dermot <paikkos@xxxxxxxxx> wrote:

From: Dermot <paikkos@xxxxxxxxx>
Subject: [Xen-users] Unable to create (and keep) guest
To: xen-users@xxxxxxxxxxxxxxxxxxx
Date: Friday, November 5, 2010, 10:38 AM

Hi,

Host: CentOS 5.5
Guest: Ubuntu maverick

I am having a horrid time trying to create a guest on my xen machine.

I have tried several method. The method that I have had the most
success with is `xm create`. The problem I have is that once the I
have run:

xm create -c myconfig.cfg install=true
install-mirror=http://mirror.bytemark.co.uk/ubuntu/
install-suite=maverick

and go all the way throught the installation, the guest does not
appear in `xm list`. It appears in the list during the installation
but once the install is complete and I reboot, it never comes back. If
I try to start it with `xm create myconfig.cfg`


#
#  Hostname
#
name        = 'testhost'

#
#  Networking
#
dhcp        = 'dhcp'
vif         = [ 'mac=00:16:3E:1E:65:85' ]

#
#  Behaviour
#

on_reboot   = 'restart'
on_crash    = 'restart'

# Debian Installer specific variables

def check_bool(name, value):
    value = str(value).lower()
    if value in ('t', 'tr', 'tru', 'true'):
        return True
    return False

global var_check_with_default
def var_check_with_default(default, var, val):
    if val:
        return val
    return default

xm_vars.var('install', use='Install Debian, default: false', check=check_bool)
xm_vars.var("install-method",
            use='Installation method to use "cdrom" or "network"
(default: network)',
            check=lambda var, val: var_check_with_default('network', var, val))

# install-method == "network"
xm_vars.var("install-mirror",
            use='Debian mirror to install from (default:
http://archive.ubuntu.com/ubuntu)',
            check=lambda var, val:
var_check_with_default('http://archive.ubuntu.com/ubuntu', var, val))
xm_vars.var("install-suite",
            use='Debian suite to install (default: maverick)',
            check=lambda var, val: var_check_with_default('maverick', var, val))

# install-method == "cdrom"
xm_vars.var("install-media",
            use='Installation media to use (default: None)',
            check=lambda var, val: var_check_with_default(None, var, val))
xm_vars.var("install-cdrom-device",
            use='Installation media to use (default: xvdd)',
            check=lambda var, val: var_check_with_default('xvdd', var, val))

# Common options
xm_vars.var("install-arch",
            use='Debian mirror to install from (default: amd64)',
            check=lambda var, val: var_check_with_default('amd64', var, val))
xm_vars.var("install-extra",
            use='Extra command line options (default: None)',
            check=lambda var, val: var_check_with_default(None, var, val))
xm_vars.var("install-installer",
            use='Debian installer to use (default: network uses
install-mirror; cdrom uses /install.ARCH)',
            check=lambda var, val: var_check_with_default(None, var, val))
xm_vars.var("install-kernel",
            use='Debian installer kernel to use (default: uses
install-installer)',
            check=lambda var, val: var_check_with_default(None, var, val))
xm_vars.var("install-ramdisk",
            use='Debian installer ramdisk to use (default: uses
install-installer)',
            check=lambda var, val: var_check_with_default(None, var, val))

xm_vars.check()

if not xm_vars.env.get('install'):
    bootloader="pygrub"
elif xm_vars.env['install-method'] == "network":
    import os.path
    print "Install Mirror: %s" % xm_vars.env['install-mirror']
    print "Install Suite: %s" % xm_vars.env['install-suite']
    if xm_vars.env['install-installer']:
        installer = xm_vars.env['install-installer']
    else:
        installer =
xm_vars.env['install-mirror']+"/dists/"+xm_vars.env['install-suite'] +
\

"/main/installer-"+xm_vars.env['install-arch']+"/current/images"
    print "Installer: %s" % installer

    print
    print "WARNING: Installer kernel and ramdisk are not authenticated."
    print

    if xm_vars.env.get('install-kernel'):
        kernelurl = xm_vars.env['install-kernel']
    else:
        kernelurl = installer + "/netboot/xen/vmlinuz"

    if xm_vars.env.get('install-ramdisk'):
        ramdiskurl = xm_vars.env['install-ramdisk']
    else:
        ramdiskurl = installer + "/netboot/xen/initrd.gz"

    import urllib
    class MyUrlOpener(urllib.FancyURLopener):
        def http_error_default(self, req, fp, code, msg, hdrs):
            raise IOError("%s %s" % (code, msg))
    urlopener = MyUrlOpener()

    try:
        print "Fetching %s" % kernelurl
        kernel, _ = urlopener.retrieve(kernelurl)
        print "Fetching %s" % ramdiskurl
        ramdisk, _ = urlopener.retrieve(ramdiskurl)
    except IOError, _:
        raise

elif xm_vars.env['install-method'] == "cdrom":
    arch_path = { 'i386': "/install.386",
                  'amd64': "/install.amd" }

    if xm_vars.env['install-media']:
        print "Install Media: %s" % xm_vars.env['install-media']
    else:
        raise OptionError("No installation media given.")

    if xm_vars.env['install-installer']:
        installer = xm_vars.env['install-installer']
    else:
        installer = arch_path[xm_vars.env['install-arch']]

    print "Installer: %s" % installer

    if xm_vars.env.get('install-kernel'):
        kernelpath = xm_vars.env['install-kernel']
    else:
        kernelpath = installer + "/xen/vmlinuz"

    if xm_vars.env.get('install-ramdisk'):
        ramdiskpath = xm_vars.env['install-ramdisk']
    else:
        ramdiskpath = installer + "/xen/initrd.gz"

    disk.insert(0, 'file:%s,%s:cdrom,r' % (xm_vars.env['install-media'],
                                           xm_vars.env['install-cdrom-device']))

    bootloader="/usr/bin/pygrub"
    bootargs="--kernel=%s --ramdisk=%s" % (kernelpath, ramdiskpath)
    print "From CD"
else:
    print "WARNING: Unknown install-method: %s." % xm_vars.env['install-method']

if xm_vars.env.get('install'):
    # Figure out command line
    if xm_vars.env['install-extra']:
        extras=[xm_vars.env['install-extra']]
    else:
        extras=[]

    # Reboot will just restart the installer since this file is not
    # reparsed, so halt and restart that way.
    extras.append("debian-installer/exit/always_halt=true")
    extras.append("--")
    extras.append("quiet")

    console="hvc0"
    try:
        if len(vfb) >= 1:
            console="tty0"
    except NameError, e:
        pass
    extras.append("console="+ console)
    extra = str.join(" ", extras)
    print "command line is \"%s\"" % extra

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