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|
#!/bin/bash
# Author: Steven Shiau <steven _at_ clonezilla org>
# license: GPL
# Description: update the kernel of DRBL clients from server's kernel
# RC: 0: succeed 1: fail 2:fail (can not find the common_root/lib/modules
# Load DRBL setting and functions
DRBL_SCRIPT_PATH="${DRBL_SCRIPT_PATH:-/usr/share/drbl}"
. $DRBL_SCRIPT_PATH/sbin/drbl-conf-functions
#
usage() {
echo "Update the DRBL client's kernel from server..."
echo "Usage: $0 [-u|--update] [-v|--verbose]"
echo "-u, --update: Update only (do not overwrite newer files)"
echo "-v, --verbose: Prints out verbose information"
echo
echo "Ex:"
echo "$0 -u -v"
}
#
check_if_root
# default settings
RSYNC_OPT_EXTRA=""
depmod_stderr="/dev/null"
while [ $# -gt 0 ]; do
case "$1" in
-f|--force)
shift; FORCE_UPDATE="yes"
;;
-u|--update)
shift; RSYNC_OPT_EXTRA="$RSYNC_OPT_EXTRA -u"
;;
-v|--verbose)
verbose="on"
RSYNC_OPT_EXTRA="$RSYNC_OPT_EXTRA -v"
shift ;;
-*) echo "${0}: ${1}: invalid option" >&2
usage >& 2
exit 2 ;;
*) break ;;
esac
done
#
if [ "$verbose" = "on" ]; then
# The default output for depmod is surpressed, now turn it on
depmod_stderr="/dev/stderr"
fi
# copy the modules for clients, to $drbl_common_root/lib/modules
DRBL_KVER="$(cat $pxecfg_pd/kernel_version_in_initrd.txt 2>/dev/null)"
KARCH_CLIENT="$(cat $pxecfg_pd/client_kernel_arch.txt 2>/dev/null)"
if [ -n "$DRBL_KVER" ]; then
echo "The DRBL client uses $KARCH_CLIENT kernel with version $DRBL_KVER..."
else
echo "Warning! Unable to find the kernel version information for DRBL clients!"
echo "Are you sure you already run \"drblsrv -i\" ?"
echo "Press \"Enter\" to continue..."
read
fi
[ -z "$KARCH_CLIENT" ] && echo "Unable to find the DRBL client's arch info!!! Did you run \"drblsrv -i\" ? Program terminated!!!" && exit 1
#
echo "Trying to update the $drbl_common_root/lib/modules/$DRBL_KVER from server's /lib/modules/... This might take several minutes..."
# check if $drbl_common_root/lib/modules/ exists
if [ ! -d $drbl_common_root/lib/modules/ ]; then
[ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
echo "Warning!!! Directory $drbl_common_root/lib/modules/ does NOT exists!!! Did you already install the necessary packages for DRBL ? Skip copying modules!"
[ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
exit 2
fi
#
if [ -n "$DRBL_KVER" ]; then
# found the kernel version info of clients, process the specific version
# check the kernel arch of server and client, if matches, copy them.
if [ "$FORCE_UPDATE" != "yes" ]; then
KARCH_SERVER="$(drbl-check-kernel-cpu-arch $DRBL_KVER)"
[ -z "$KARCH_SERVER" ] && echo "\"$KARCH_CLIENT\" $DRBL_KVER kernel in this DRBL server is not found, so skip this." && exit 1
fi
# do it...
if [ "$FORCE_UPDATE" = "yes" -o "$KARCH_CLIENT" = "best_optimization" -o "$KARCH_SERVER" = "$KARCH_CLIENT" ]; then
# TODO... if force, the KARCH_SERVER maybe "nothing".
echo "Found kernel modules in /lib/modules/$DRBL_KVER and its arch \"$KARCH_SERVER\" matches client's \"$KARCH_CLIENT\"..."
# no matter directory $drbl_kernel_mod_path/lib/modules/$DRBL_KVER
# exits or not, (note! Here we do NOT use rsync --delete! So this
# will supply more files at most, not delete some.)
# we copy it to DRBL clients' common root directory, i.e. we force to
# update the kernel modules when run mknic-nbi
# (a) for modules
if [ -d "/lib/modules/$DRBL_KVER" -a -f "/lib/modules/$DRBL_KVER/modules.dep" ] ; then
# check if -f "/lib/modules/\$DRBL_KVER/modules.dep is important.
# this will avoid copying an empty kernel modules tree. just a better check.
# this will happen if we compiled a module and install it, when we
# remove the kernel by rpm -e ..., the /lib/modules/kernel-xxx will still exist.
echo "Syncing /lib/modules/$DRBL_KVER to client's common root..."
rsync -a $RSYNC_OPT_EXTRA /lib/modules/$DRBL_KVER $drbl_common_root/lib/modules/
fi
if ls /boot/*-$DRBL_KVER* >/dev/null 2>&1; then
# (b) for kernel, i.e. vmlinuz and initrd...
echo "Syncing /boot/*-$DRBL_KVER* to client's common root..."
rsync -a $RSYNC_OPT_EXTRA /boot/*-$DRBL_KVER* $drbl_common_root/boot
fi
#
echo "Generating the $drbl_common_root/lib/modules/$DRBL_KVER/modules.dep"
depmod -ae -b $drbl_common_root/ -F $drbl_common_root/boot/System.map-$DRBL_KVER $DRBL_KVER 2> $depmod_stderr
else
[ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
echo "The kernel $DRBL_KVER installed in this DRBL server is for \"$KARCH_SERVER\", while the DRBL client wants kernel with \"$KARCH_CLIENT\"! Skip this!"
[ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
fi
else
# if we can not find the tag, copy them all, this only works in Redhat,
# might be NOT work in Mandrake
# (a) for modules
rsync -a $RSYNC_OPT_EXTRA /lib/modules/2.[46].[0-9]* $drbl_common_root/lib/modules/
# (b) for kernel, i.e. vmlinuz and initrd...
rsync -a $RSYNC_OPT_EXTRA /boot/*-2.[46].[0-9]* $drbl_common_root/boot
fi
# Update firmwares
if [ -d "/lib/firmware" ]; then
echo "Syncing /lib/firmware/ to client's common root..."
rsync -a $RSYNC_OPT_EXTRA /lib/firmware $drbl_common_root/lib/
fi
exit 0
|
