[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] /etc/grub.d/09-xen for generating grub.cfg for hypervisor boot entries.
OK, here's the minor mod to only do this for Xen kernels as determined by DOM0=y in boot/config-* Added header and switched from sh to bash to get param subst functionality because I'm too lazy to think about other options.
========================================= cut ================================ #!/bin/bash -e #===============================================================================
# # FILE: 09_xen # # USAGE: update-grub ... with this in /etc/grub.d # # DESCRIPTION: Generate grub2 boot stanza for Xen systems # Xen boot entries are automatically added to grub.cfg
# The 09-... name prefix puts the Xen boot entries before # the linux kernel entries # # OPTIONS: --- # REQUIREMENTS: --- grub2, Xen hypervisor
# BUGS: --- probably # NOTES: --- Copied from 10_linux with a few hacks to make ir work for Xen. # Incorporated suggestions to only do this for valid dom0 kernels
# AUTHOR: Bruce Edge (BRE), bruce.edge@xxxxxxx # COMPANY: LSI # VERSION: 1.0 # CREATED: 05/19/2010 02:32:34 PM PDT
# REVISION: --- #=============================================================================== prefix=/usr exec_prefix=${prefix} libdir=${exec_prefix}/lib
. ${libdir}/grub/update-grub_lib if [ "x${GRUB_DISTRIBUTOR}" = "x" ] ; then OS=GNU/Linux else OS="${GRUB_DISTRIBUTOR}"
fi # Source grub defaults . /etc/default/grub # loop-AES arranges things so that /dev/loop/X can be our root device, but # the initrds that Linux uses don't like that.
case ${GRUB_DEVICE} in /dev/loop/*|/dev/loop[0-9]) GRUB_DEVICE=`losetup ${GRUB_DEVICE} | sed -e "s/^[^(]*(\([^)]\+\)).*/\1/"` ;; esac
if [ "x${GRUB_DEVICE_UUID}" = "x" ] || [ "x${GRUB_DISABLE_LINUX_UUID}" = "xtrue" ] \ || ! test -e "/dev/disk/by-uuid/${GRUB_DEVICE_UUID}" ; then LINUX_ROOT_DEVICE=${GRUB_DEVICE}
else LINUX_ROOT_DEVICE=UUID=${GRUB_DEVICE_UUID} fi test_gt () { local a=`echo $1 | sed -e "s,.*/vmlinu[zx]-,,g;s/[._-]\(pre\|rc\|test\|git\|old\)/~\1/g"`
local b=`echo $2 | sed -e "s,.*/vmlinu[zx]-,,g;s/[._-]\(pre\|rc\|test\|git\|old\)/~\1/g"` if [ "x$b" = "x" ] ; then return 0 fi dpkg --compare-versions "$a" gt "$b"
return $? } find_latest () { local a="" for i in $@ ; do if test_gt "$i" "$a" ; then a="$i"
fi done echo "$a" } list=`for i in /boot/vmlinu[xz]-* /vmlinu[xz]-* ; do if grub_file_is_not_garbage "$i" && grep -q 'DOM0=y' ${i/vmlinu[xz]/config} ; then echo -n "$i " ; fi
done` while [ "x$list" != "x" ] ; do linux=`find_latest $list` echo "Found linux image: $linux" >&2 basename=`basename $linux`
dirname=`dirname $linux` rel_dirname=`make_system_path_relative_to_its_root $dirname` version=`echo $basename | sed -e "s,^[^0-9]*-,,g"` alt_version=`echo $version | sed -e "s,\.old$,,g"`
linux_root_device_thisversion="${LINUX_ROOT_DEVICE}" initrd= for i in "initrd.img-${version}" "initrd-${version}.img" \ "initrd.img-${alt_version}" "initrd-${alt_version}.img"; do
if test -e "${dirname}/${i}" ; then initrd="$i" break fi done if test -n "${initrd}" ; then echo "Found initrd image: ${dirname}/${initrd}" >&2
else # "UUID=" magic is parsed by initrds. Since there's no initrd, it can't work here. linux_root_device_thisversion=${GRUB_DEVICE} fi cat << EOF insmod lvm set root=(system-dom0_0) menuentry "Xen ${OS}, linux ${version}" { multiboot dummy=dummy /boot/xen.gz $GRUB_CMDLINE_XEN_DEFAULT
module ${rel_dirname}/${basename} root=${linux_root_device_thisversion} $GRUB_CMDLINE_LINUX_DEFAULT EOF if test -n "${initrd}" ; then cat << EOF module ${rel_dirname}/${initrd} ${rel_dirname}/${initrd}
EOF fi cat << EOF } EOF list=`echo $list | tr ' ' '\n' | grep -vx $linux | tr '\n' ' '` done
========================================= cut ================================ -BruceOn Wed, May 19, 2010 at 1:19 PM, Richie <listmail@xxxxxxxxxxxx> wrote: Ok. Thanks for correcting my mistake. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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