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Re: [Xen-users] Problems creating a Fedora 14 domU using XCP 1.0 and xe

To: Joe Linoff <jlinoff@xxxxxxxxxx>, "xen-users@xxxxxxxxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-users] Problems creating a Fedora 14 domU using XCP 1.0 and xe
From: Mike McClurg <mike.mcclurg@xxxxxxxxxx>
Date: Tue, 17 May 2011 11:39:09 +0100
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On 17/05/11 04:14, Joe Linoff wrote:
Hi Folks:

I am having trouble creating a Fedora 14 domU on a XCP 1.0 dom0
hypervisor and am hoping that someone can help me figure out what I am
doing wrong.

 It's probably the documentation's fault, not yours ;)

Here is what I did (per the user's guide and reference manual):

## Step 1. Create the VM:
# uuid=$(xe vm-install template='Other install media'
## Note: I also tried CentOS variants

RHEL 6 x86_64 may also work, but 'Other install media' is often your best bet.

## Step 2. Get the network ID
# netwuuid=$(xe network-list bridge=xenbr0 --minimal)

## Step 3. Create the VIF
# xe vif-create vm-uuid=$uuid \
    network-uuid=$netwuuid \


At this point, you'll also need to update other-config:install-methods to include http. Otherwise, it will just try to boot from the cdrom, which is empty.

# xe vm-param-set uuid=$uuid  other-config:install-methods=cdrom,http

## Step 4. Verify that the http address is correct using wget to get the
# wget ://
# ls -l GPL

## Step 5. Start the Guest
# xe vm-start uuid=$uuid

## Step 6. Get the VNC port from xenstored, first get the domid
# domid=$(xe vm-list uuid=$uuid params=dom-id --minimal)
# xenstore-ls -f /local/domain/$domid | grep vnc-port
## port is 5901

## Step 7. setup an ssh tunnel for the port on another host
# ssh -L5901: root@xxxxxxxxxxxx

## Step 8. VNC in from the other host (initiator of the ssh tunnel)
# vncviewer localhost:5901

At this point everything works and VNC connects but the boot message is:

     Boot device: CD-Rom - failure: could not read boot disk

     Boot device: Hard Drive - failure: could not read boot disk

     No bootable device.
     Reboot or press any key to retry.

The /mnt/Fedora-14-x86_64 directory was loop mounted directly from the
Fedora CD:

# mount -o loop Fedora-14-x86_64-Live-Desktop.iso /var/www/html/mnt

I verified that the CD was bootable and that everything was readable in
the exploded directory.

If you've got an ISO image on your local network, you can also just boot from that. You can export the directory containing the ISO as an NFS share, and then use `xe-mount-iso-sr host:/ISO-directory`. Once you have the ISO directory mounted as an SR, you can then add the Fedora ISO to the VM as a CD:

# xe vm-cd-add vm=test device=3 cd-name='Fedora-14-x86_64-Live-Desktop.iso'

While it would work, I wouldn't recommend putting the ISO directly in dom0, because we only give that filesystem 4GiB to use, and it'll ruin your day if you run out of space on dom0.


## On the XCP server
# lsb_release -a
LSB Version:    :core-3.1-ia32:core-3.1-noarch
Distributor ID: XCP
Description:    XCP release 1.0.0-42052c (xcp)
Release:        1.0.0-42052c
Codename:       xcp

# uname -a
Linux xenserver-tcc-lab-04 #1 SMP
Tue Feb 1 17:10:20 EST 2011 i686 i686 i386 GNU/Linux

Any hints would be greatly appreciated.



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