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Re: [Xen-users] Upgrade Proceedure

To: "Petersson, Mats" <Mats.Petersson@xxxxxxx>
Subject: Re: [Xen-users] Upgrade Proceedure
From: Nico Kadel-Garcia <nkadel@xxxxxxxxx>
Date: Tue, 15 May 2007 17:54:04 +0100
Cc: Mike Wright <xktnniuymlla@xxxxxxxxxxxxxx>, Ian Tobin <itobin@xxxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
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Petersson, Mats wrote:
[snip a ton of old stuff]
The INSTALL script you mention works without the build directory in place? That's a bit.... odd.

Not at all. It just takes the files in the "dist" directory (which is a
copy of what's been produced in the individual build directories, e.g.
xen.gz, qemu-dm, vmlinuz, kernel modules, hvmloader, etc, etc), and
copies it out to wherever it goes. Have a look at "dist/install.sh".
It's not complicated, it essentially just copies the files from
"dist/install" to whatever destination you specify (defualt is "/").
If you're not familiar with it, I'd like to point out that
there is a
INSTALL script in the distribution directory which can be used to
install the resulting product of the make (which is what I described
earlier in this thread).
I use Makefiles and RPM's to support full-blown package management, version management, conflict reports, etc., etc., etc. Writing all of that into an installer or uniinstaller script is quite a lot of work.

I recognize that not every OS has this kind of package management, and prefer to build on the fly.

Great if you have the environment to build the RPM, but if you take the
xen-unstable.hg repo, it doesn't come with spec-files to make RPM's
The spec files don't usually change much between different software versions, although I use hte xensource src.rpm files for that: The RHEL 5 and Fedora Core SRPM's do a lot of...... extra stuff with virt-manager that I don't feel a need for and in fact find inappropriate for most use. (This may be due to libvirt for RedHat releases being way behind the leading edge for the software!)

For Xen kernels, and other kernels under RHEL, one normally does an "rpm -i", not an "rpm -U". this installs the new kernel as well as the old one: Post-install scripts may change some of the symlinks in /boot, and edit the grub or lilo appropriately: that takes knowledge and software control of the grub or lilo commands, and some expertise to do carefully.

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