[kernel-xen] kernel-xen-3.9.7-1 packages available - TESTERS REQUIRED!
netwiz at crc.id.au
Sat Jun 22 08:05:06 EST 2013
On 22/06/2013 3:44 AM, Joe Fialkowski wrote:
> Great work Steve! Thank you! This was always a PITA when it came to
> upgrading. Will try and give it a test soon.
I agree. It always bugged me too - but I wanted to think long and hard
about how/what to do - as the last thing I want is to screw up a systems
grub.conf and leave the possibility that the system won't recover.
That's a worst case. So in the past, I always left the human to make
The script that does the changes is:
HYPERVISOR=`grep -m1 xen.gz $GRUB_CONF`
if [[ -z $HYPERVISOR ]]; then
## We haven't found an existing hypervisor. Find where
xen.gz is and add the defaults.
echo "No existing Xen install found. Using defaults."
## Look for /boot partition, otherwise assume relative to /
if `grep -q "/boot" /proc/mounts`; then
HYPERVISOR=`echo -e "\tkernel $XEN_GZ dom0_mem=1024M
cpufreq=xen dom0_max_vcpus=1 dom0_vcpus_pin"`
KERNEL=`grep -m1 vmlinuz-3.9.7-1.el6xen.x86_64 $GRUB_CONF`
INITRAMFS=`grep -m1 initramfs-3.9.7-1.el6xen.x86_64 $GRUB_CONF`
if [[ -z "$KERNEL" || -z "$INITRAMFS" ]]; then
echo "ERROR: Something unexpected was found in
/etc/grub.conf. Please edit manually."
KERNEL_NEW=$( echo "$KERNEL" | sed 's|kernel|module|' )
INITRAMFS_NEW=$( echo "$INITRAMFS" | sed
sed -i "s|$KERNEL|$HYPERVISOR\n$KERNEL_NEW|" $GRUB_CONF
sed -i "s|$INITRAMFS|$INITRAMFS_NEW|" $GRUB_CONF
I know this could be a done in a few less lines of code, however the
theory I've gone with is that I want to be EXACT with things I want to
change. As such, I only change COMPLETE lines that I am almost certain
will be correct - not matching parts of a line.
There are a couple of failures that I can think of:
1) If you set up grub.conf manually for the kernel you are about to
install, then install the kernel package, it may do some unpredictable
things. I feel this situation would be VERY unlikely though.
2) The script also checks if there is a /boot partition mounted. If
there is, we assume that xen.gz etc are relative to / (being the boot
partition). If /boot is *NOT* mounted when the kernel-xen package is
installed, it will believe that files are in the root partition instead
of a boot partition. I feel this is unlikely however.
Email: netwiz at crc.id.au
Phone: (03) 9001 6090 - 0412 935 897
Fax: (03) 8338 0299
More information about the kernel-xen