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XenServer Virtual Machine Installation Guide Installing Linux VMs 31
xe vm-param-remove uuid=<vm_uuid> other-config: \
param-key=suppress-spurious-page-faults
Preparing a RHEL 4.x guest for cloning
To prepare a RHEL4 guest for cloning (see the section called “MAC address”), edit /etc/syscon-
fig/network-scripts/ifcfg-eth0 before converting the VM into a template and remove the HWADDR
line.
Note
Red Hat recommends the use of Kickstart to perform automated installations, instead of directly cloning
disk images (see Red Hat KB Article 1308).
Preparing a RHEL 4.x server for P2V
Before performing a P2V conversion from an existing RHEL4 installation, ensure that the /etc/fstab file
on the VM contains an entry for the /boot mount point. This partition contains the files which are changed
by the P2V process to give the resulting VM a PV kernel.
After a successful P2V, some modifications may be needed in older Red Hat Linux 4.x distributions. To get
LVM working on xvd* devices, add the following line under the devices { line in /etc/lvm/lvm.conf:
types = ["xvd", 16]
RHEL Graphical Network Install Support
To perform a graphical installation, add VNC to the list of advanced OS boot parameters when creating the
VM:
graphical utf8 vnc
You will be prompted to provide networking configuration for the new VM so that VNC communication can
be enabled. The standard graphical installer will then be displayed.
Red Hat Enterprise Linux 5
XenServer includes the RHEL 5.3 kernel with additional bug fixes and expanded Xen support. This kernel
is installed with the Citrix Tools for Virtual Machines installation, but not in the RHEL 5 default installations.
• During the resume operation on a suspended VM, allocations can be made that can cause swap activity
which cannot be performed because the swap disk is still being reattached. (Red Hat Bugzilla 429102).
• After resuming a suspended VM, it might crash with the message kernel BUG at mm/rmap.c:590! (Red
Hat Bugzilla 294811)
• A maximum of 3 virtual network interfaces is supported in versions below 5.2. For 5.2 and above, 7 virtual
network interfaces are supported.