humm, OK in that case, i guess i should be a little more detailed. I
did:
- Debian Wheezy 64bit
- It was original installed with kernel 3.2.0-2-amd64
- Next compiled and installed kernel 3.3.4, where only modified
.config to enabled all Xen options
- Rebooted into kernel 3.3.4 to make sure it works first. (Didn't
remove kernel 3.2.0-2-amd64 in case of issues)
- Compiled and installed Xen 4.2-unstable with the latest changeset
25269
- Rebooted into Xen 4.2-unstable using kernel 3.3.4
So you do some testing in Xen 4.2-unstable, to make sure the latest
updates to the Xen 4.2-unstable source didn't mess something up.
But, if you need to go back to a previous changest, OR even
downgrade to Xen 4.1.2, would you:
A.) Reboot into kernel 3.3.4 without xen, do a complete remove of
Xen 4.2-unstable (using synaptic sudo apt-get autoremove xen*** or
similar), than install the next package you want to test, and reboot
into Xen*** with Kernel 3.3.4?
B.) OR boot into kernel 3.3.4 without xen, and install the newly
built Xen DEB package without first removing it, which will
overwrite all current files and directories with the new one?
For the sake making it simpler to test a bunch of changesets,
nothing else was changed or removed, not the
/etc/network/interfaces, or /etc/modules, didn't update grub.cfg
until the new Xen was installed, and only Xen was removed /
reinstalled.
This is a good question to know. Much will depend on
what you mean by "Xen" and updating "Xen".
In my particular case, I run generic Distro-based Xen 3.0.x
under CentOS 5.7, and will be upgrading to GITCO-based Xen
4.1.2. My upgrade steps are
Distribution Install:
# yum update
# yum groupinstall Xen
==> or yum groupinstall Virtualization, before CentOS 5.8
had been released.
# vi /etc/grub.conf
==> change default= to use the Xen kernel= stanza.
# reboot
Upgrade install to 4.1.2:
# cd /etc/yum.repos.d
#
rpm -e --nodeps libvirt.i386
#
rpm -e --nodeps libvirt.x86_64
#
rpm -e --nodeps libvirt-python
# yum update
# vi /etc/grub.conf
==> consider whether your hardware requires pci=nomsi on
the module=vmlinuz line of the active stanzas. Dell R610 with
MegaRAID requires it.
# reboot
--Andy
On Thu, May 10, 2012 at 4:30 PM, <cyberhawk001@xxxxxxxxx>
wrote:
This might
be a silly question for most, but since Xen is ever so
changing with regular changesets and updates, what is the
"best practice" way to upgrade / update or even downgrade
Xen?
1.) Is it by booting into regular Linux Kernel without Xen,
do a complete uninstall of the old Xen, than install the
newly compiled Xen?
2.) Is it by booting into regular Linux Kernel without Xen,
than install the newly compiled Xen, were it will / should
overwrite everything with the new version?
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