kexec-tools/mkdumprd

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2006-07-20 03:36:18 +00:00
#!/bin/bash --norc
# vim:sts=4:sw=4:ts=8:et
# mkinitrd
#
# Copyright 2005 Red Hat, Inc.
#
# Written by Erik Troan <ewt@redhat.com>
#
# Contributors:
# Elliot Lee <sopwith@cuc.edu>
# Miguel de Icaza <miguel@nuclecu.unam.mx>
# Christian 'Dr. Disk' Hechelmann <drdisk@ds9.au.s.shuttle.de>
# Michael K. Johnson <johnsonm@redhat.com>
# Pierre Habraken <Pierre.Habraken@ujf-grenoble.fr>
# Jakub Jelinek <jakub@redhat.com>
# Carlo Arenas Belon (carenas@chasqui.lared.net.pe>
# Keith Owens <kaos@ocs.com.au>
# Bernhard Rosenkraenzer <bero@redhat.com>
# Matt Wilson <msw@redhat.com>
# Trond Eivind Glomsrød <teg@redhat.com>
# Jeremy Katz <katzj@redhat.com>
# Preston Brown <pbrown@redhat.com>
# Bill Nottingham <notting@redhat.com>
# Guillaume Cottenceau <gc@mandrakesoft.com>
# Peter Jones <pjones@redhat.com>
umask 0022
export MALLOC_PERTURB_=204
PATH=/sbin:/usr/sbin:/bin:/usr/bin:$PATH
export PATH
. /etc/rc.d/init.d/functions
VERSION=5.0.39
PROBE="yes"
MODULES=""
PREMODS=""
DMRAIDS=""
MPATHS=""
[ -e /etc/sysconfig/mkinitrd ] && . /etc/sysconfig/mkinitrd
CONFMODS="$MODULES"
MODULES=""
withusb=yes
compress=1
allowmissing=""
target=""
kernel=""
force=""
verbose=""
img_vers=""
builtins=""
modulefile=/etc/modules.conf
rc=0
IMAGESIZE=8000
PRESCSIMODS="sd_mod"
fstab="/etc/fstab"
vg_list=""
net_list=""
vecho()
{
NONL=""
if [ "$1" == "-n" ]; then
NONL="-n"
shift
fi
[ -n "$verbose" ] && echo $NONL "$@"
}
error()
{
NONL=""
if [ "$1" == "-n" ]; then
NONL="-n"
shift
fi
echo $NONL "$@" >&2
}
usage () {
if [ "$1" == "-n" ]; then
cmd=echo
else
cmd=error
fi
$cmd "usage: `basename $0` [--version] [--help] [-v] [-d] [-f] [--preload <module>]"
$cmd " [--force-ide-probe] [--force-scsi-probe | --omit-scsi-modules]"
$cmd " [--image-version] [--force-scsi-probe | --omit-raid-modules]"
$cmd " [--with=<module>] [--force-lvm-probe | --omit-lvm-modules]"
$cmd " [--builtin=<module>] [--omit-dmraid]"
$cmd " [--fstab=<fstab>] [--nocompress] <initrd-image> <kernel-version>"
$cmd ""
$cmd " (ex: `basename $0` /boot/initrd-2.2.5-15.img 2.2.5-15)"
if [ "$1" == "-n" ]; then
exit 0
else
exit 1
fi
}
moduledep() {
if [ ! -f "/lib/modules/$kernel/modules.dep" ]; then
error "No dep file found for kernel $kernel"
exit 1
fi
vecho -n "Looking for deps of module $1"
deps=$(awk 'BEGIN { searched=ARGV[2]; ARGV[2]=""; rc=1 } \
function modname(filename) { match(filename, /\/([^\/]+)\.k?o:?$/, ret); return ret[1] } \
function show() { if (orig == searched) { print dep; orig=""; rc=0; exit } } \
/^\/lib/ { show(); \
orig=modname($1); dep=""; \
if ($2) { for (i = 2; i <= NF; i++) { dep=sprintf("%s %s", dep, modname($i)); } } } \
/^ / { dep=sprintf("%s %s", dep, modname($1)); } \
END { show(); exit(rc) }' /lib/modules/$kernel/modules.dep $1)
[ -n "$deps" ] && vecho ":$deps" || vecho
}
findone() {
echo nash-find "$@" | /sbin/nash --force --quiet \
| /bin/awk '{ print $1; exit; }'
}
findall() {
echo nash-find "$@" | /sbin/nash --force --quiet
}
dm_get_uuid() {
echo dm get_uuid "$1" | /sbin/nash --force --quiet
}
findmodule() {
skiperrors=""
if [ $1 == "--skiperrors" ]; then
skiperrors=--skiperrors
shift
fi
local modName=$1
if [ "$modName" = "off" -o "$modName" = "null" ]; then
return
fi
if [ $(echo $modName | cut -b1) = "-" ]; then
skiperrors=--skiperrors
modName=$(echo $modName | cut -b2-)
fi
case "$MODULES " in
*"/$modName.ko "*) return ;;
esac
if echo $builtins | egrep -q '(^| )'$modName'( |$)' ; then
vecho "module $modName assumed to be built in"
return
fi
# special cases
if [ "$modName" = "i2o_block" ]; then
findmodule i2o_core
findmodule -i2o_pci
modName="i2o_block"
elif [ "$modName" = "ppa" ]; then
findmodule parport
findmodule parport_pc
modName="ppa"
elif [ "$modName" = "sbp2" ]; then
findmodule ieee1394
findmodule ohci1394
modName="sbp2"
else
moduledep $modName
for i in $deps; do
findmodule $i
done
fi
for modExt in o.gz o ko ; do
for modDir in /lib/modules/$kernel/updates /lib/modules/$kernel ; do
if [ -d $modDir ]; then
fmPath=$(findone $modDir -name $modName.$modExt)
if [ -f "$fmPath" ]; then
break 2
fi
fi
done
done
if [ ! -f $fmPath ]; then
if [ -n "$skiperrors" ]; then
return
fi
# ignore the absence of the scsi modules
for n in $PRESCSIMODS; do
if [ "$n" = "$modName" ]; then
return;
fi
done;
if [ -n "$allowmissing" ]; then
error "WARNING: No module $modName found for kernel $kernel, continuing anyway"
return
fi
error "No module $modName found for kernel $kernel, aborting."
exit 1
fi
# only need to add each module once
MODULES="$MODULES $fmPath"
# need to handle prescsimods here -- they need to go _after_ scsi_mod
if [ "$modName" = "scsi_mod" ]; then
for n in $PRESCSIMODS ; do
findmodule $n
done
fi
}
finddmmods() {
line=$(/sbin/dmsetup table "$1" 2>/dev/null)
[ -z "$line" ] && return 1
type=$(echo "$line" | awk '{ print $3 }')
[ -z "$type" ] && return 1
case "$type" in
mirror)
findmodule -dm-mirror
;;
emc)
findmodule -dm-emc
findmodule -dm-round-robin
;;
multipath)
findmodule -dm-multipath
findmodule -dm-round-robin
;;
crypt)
findmodule -dm-crypt
;;
zero)
findmodule -dm-zero
;;
esac
}
inst() {
if [ "$#" != "2" ];then
echo "usage: inst <file> <destination>"
return
fi
vecho "$1 -> $2"
cp $1 $2
}
readlink() {
echo nash-readlink "$1" | /sbin/nash --force --quiet
}
access() {
echo nash-access -w $t | /sbin/nash --force --quiet
}
findstoragedriverinsys () {
while [ ! -L device ]; do
[ "$PWD" = "/sys" ] && return
cd ..
done
cd $(readlink ./device)
while [ ! -f modalias ]; do
[ "$PWD" = "/sys/devices" ] && return
cd ..
done
modalias=$(cat modalias)
for driver in $(modprobe --set-version $kernel --show-depends $modalias 2>/dev/null| awk '{ print gensub(".*/","","g",$2) }') ; do
findmodule ${driver%%.ko}
done
}
findstoragedriver () {
for device in $@ ; do
case " $handleddevices " in
*" $device "*)
continue ;;
*) handleddevices="$handleddevices $device" ;;
esac
if [[ "$device" =~ "md[0-9]+" ]]; then
vecho "Found RAID component $device"
handleraid "$device"
continue
fi
vecho "Looking for driver for device $device"
sysfs=$(findone -type d /sys/block -name $device)
[ -z "$sysfs" ] && return
pushd $sysfs >/dev/null 2>&1
findstoragedriverinsys
popd >/dev/null 2>&1
done
}
findnetdriver() {
for device in $@ ; do
case " $handleddevices " in
*" $device "*)
continue ;;
*) handleddevices="$handleddevices $device" ;;
esac
modalias=$(cat /sys/class/net/$device/device/modalias)
for driver in $(modprobe --set-version $kernel --show-depends $modalias 2>/dev/null| awk '{ print gensub(".*/","","g",$2) }') ; do
findmodule ${driver%%.ko}
done
done
}
handleraid() {
local start=0
if [ -n "$noraid" -o ! -f /proc/mdstat ]; then
return 0
fi
levels=$(grep "^$1[ ]*:" /proc/mdstat | \
awk '{ print $4 }')
devs=$(grep "^$1[ ]*:" /proc/mdstat | \
awk '{ print gensub("\\[[0-9]*\\]","","g",gensub("^md.*raid[0-9]*","","1")) }')
for level in $levels ; do
case $level in
linear)
findmodule linear
start=1
;;
multipath)
findmodule multipath
start=1
;;
raid[01456] | raid10)
findmodule $level
start=1
;;
*)
error "raid level $level (in /proc/mdstat) not recognized"
;;
esac
done
findstoragedriver $devs
if [ "$start" = 1 ]; then
raiddevices="$raiddevices $1"
fi
return $start
}
handlelvordev() {
local vg=`lvs --noheadings -o vg_name $1 2>/dev/null`
if [ -n "$vg" ]; then
vg=`echo $vg` # strip whitespace
case " $vg_list " in
*" $vg "*)
;;
*)
vg_list="$vg_list $vg"
for device in `vgdisplay -v $vg 2>/dev/null | sed -n 's/PV Name//p'`; do
findstoragedriver ${device##/dev/}
done
;;
esac
else
findstoragedriver ${1##/dev/}
fi
}
handlenetdev() {
local dev=$1
source /etc/sysconfig/network
if [ ! -f /etc/sysconfig/network-scripts/ifcfg-$dev ]; then
error "unable to find network device configuration for $dev"
fi
source /etc/sysconfig/network-scripts/ifcfg-$dev
[ -n "$BOOTPROTO" ] || error "bootproto not specified for $dev"
findnetdriver $dev
[ -n "$IPADDR" ] && IPSTR="$IPSTR --ip $IPADDR"
[ -n "$NETMASK" ] && IPSTR="$IPSTR --netmask $NETMASK"
[ -n "$GATEWAY" ] && IPSTR="$IPSTR --gateway $GATEWAY"
[ -n "$ETHTOOL_OPTS" ] && IPSTR="$IPSTR --ethtool \"$ETHTOOL_OPTS\""
[ -n "$MTU" ] && IPSTR="$IPSTR --mtu $MTU"
if [ -n "$IPADDR" ]; then
[ -z "$DOMAIN" ] && DOMAIN=$(awk '/^search / { print gensub("^search ","",1) }' /etc/resolv.conf)
if [ -z "$DNS1" ]; then
DNS1=$(awk '/^nameserver / { ORS="" ; if (x > 0) print "," ; printf "%s", $2 ; x = 1}' /etc/resolv.conf)
fi
fi
[ -n "$DOMAIN" ] && IPSTR="$IPSTR --domain \"$DOMAIN\""
if [ -n "$DNS1" ]; then
if [ -n "$DNS2" ]; then
IPSTR="$IPSTR --dns $DNS1,$DNS2"
else
IPSTR="$IPSTR --dns $DNS1"
fi
fi
network="network --device $dev --bootproto $BOOTPROTO $IPSTR"
}
while [ $# -gt 0 ]; do
case $1 in
--fstab*)
if echo $1 | grep -q '=' ; then
fstab=`echo $1 | sed 's/^--fstab=//'`
else
fstab=$2
shift
fi
;;
--with-usb)
withusb=yes
;;
--without-usb)
withusb=no
;;
--with*)
if echo $1 | grep -q '=' ; then
modname=`echo $1 | sed 's/^--with=//'`
else
modname=$2
shift
fi
basicmodules="$basicmodules $modname"
;;
--builtin*)
if echo $1 | grep -q '=' ; then
modname=`echo $1 | sed 's/^--builtin=//'`
else
modname=$2
shift
fi
builtins="$builtins $modname"
;;
--version)
echo "mkinitrd: version $VERSION"
exit 0
;;
-v)
verbose=-v
;;
--nocompress)
compress=""
;;
--ifneeded)
# legacy
;;
-f)
force=1
;;
-d)
KDUMP_CONFIG_FILE=""
if [ -f /etc/kdump.conf ]; then
KDUMP_CONFIG_FILE="/etc/kdump.conf"
fi
;;
--preload*)
if echo $1 | grep -q '=' ; then
modname=`echo $1 | sed 's/^--preload=//'`
else
modname=$2
shift
fi
PREMODS="$PREMODS $modname"
;;
--force-scsi-probe)
forcescsi=1
;;
--omit-scsi-modules)
PRESCSIMODS=""
noscsi=1
;;
--force-raid-probe)
forceraid=1
;;
--omit-raid-modules)
noraid=1
;;
--force-lvm-probe)
forcelvm=1
;;
--omit-lvm-modules)
nolvm=1
;;
--omit-dmraid)
nodmraid=1
;;
--force-ide-probe)
forceide=1
;;
--image-version)
img_vers=yes
;;
--allow-missing)
allowmissing=yes
;;
--noresume)
noresume=1
;;
--help)
usage -n
;;
*)
if [ -z "$target" ]; then
target=$1
elif [ -z "$kernel" ]; then
kernel=$1
else
usage
fi
;;
esac
shift
done
if [ -z "$target" -o -z "$kernel" ]; then
usage
fi
if [ -n "$img_vers" ]; then
target="$target-$kernel"
fi
if [ -z "$force" -a -f $target ]; then
error "$target already exists."
exit 1
fi
if [ -n "$forcescsi" -a -n "$noscsi" ]; then
error "Can't both force scsi probe and omit scsi modules"
exit 1
fi
if [ -n "$forceraid" -a -n "$noraid" ]; then
error "Can't both force raid probe and omit raid modules"
exit 1
fi
if [ -n "$forcelvm" -a -n "$nolvm" ]; then
error "Can't both force LVM probe and omit LVM modules"
exit 1
fi
if [ ! -d /lib/modules/$kernel ]; then
error 'No modules available for kernel "'${kernel}'".'
exit 1
fi
if [ $UID != 0 ]; then
error "mkinitrd must be run as root."
exit 1
fi
vecho "Creating initramfs"
modulefile=/etc/modprobe.conf
# find a temporary directory which doesn't use tmpfs
TMPDIR=""
for t in /tmp /var/tmp /root ${PWD}; do
if [ ! -d $t ]; then continue; fi
if ! access -w $t ; then continue; fi
fs=$(df -T $t 2>/dev/null | awk '{line=$1;} END {printf $2;}')
if [ "$fs" != "tmpfs" ]; then
TMPDIR=$t
break
fi
done
if [ -z "$TMPDIR" ]; then
error "no temporary directory could be found."
exit 1
fi
if [ $TMPDIR = "/root" -o $TMPDIR = "${PWD}" ]; then
error "WARNING: using $TMPDIR for temporary files"
fi
for n in $PREMODS; do
findmodule $n
done
needusb=""
if [ -n "$withusb" -a "x$PROBE" == "xyes" ]; then
# If / or /boot is on a USB device include the driver. With root by
# label we could still get some odd behaviors
for fs in / /boot ; do
esc=$(echo $fs | sed 's,/,\\/,g')
dev=$(mount | awk "/ on ${esc} / { print \$1 }" | sed 's/[0-9]*$//' | cut -d/ -f3)
if [ "$(echo $dev | cut -c1-2)" = sd ]; then
if [ `which kudzu 2>/dev/null` ]; then
host=$(kudzu --probe -b scsi |
gawk '/^device: '${dev}'/,/^host:/ { if (/^host/) { print $2; exit; } }')
if [ -d /proc/scsi/usb-storage-${host} -o -f /proc/scsi/usb-storage/${host} ]; then
needusb=1
fi
fi
fi
done
fi
if [ -n "$needusb" -a "x$PROBE" == "xyes" ]; then
drivers=$(awk '/^alias[[:space:]]+usb-controller[0-9]* / { print $3}' < $modulefile)
useUSB=0
if [ -n "$drivers" ]; then
useUSB=1
for driver in $drivers; do
findmodule $driver
done
fi
for x in $(grep ^[eou]hci_hcd /proc/modules | awk '{ print $1 }' | tac) ; do
useUSB=1
findmodule $(echo $x | sed 's/_/-/')
done
if [ "$useUSB" == "1" ]; then
findmodule scsi_mod
findmodule sd_mod
findmodule usb-storage
fi
fi
if [ -n "$forcescsi" -o -z "$noscsi" -a "x$PROBE" == "xyes" ]; then
if [ ! -f $modulefile ]; then
modulefile=/etc/conf.modules
fi
if [ -f $modulefile ]; then
scsimodules=`grep "alias[[:space:]]\+scsi_hostadapter" $modulefile | grep -v '^[ ]*#' | LC_ALL=C sort -u | awk '{ print $3 }'`
if [ -n "$scsimodules" ]; then
for n in $scsimodules; do
# for now allow scsi modules to come from anywhere. There are some
# RAID controllers with drivers in block/
findmodule $n
done
fi
fi
fi
# If we have ide devices and module ide, do the right thing
ide=/proc/ide/ide*
if [ -n "$forceide" -o -n "$ide" -a "x$PROBE" == "xyes" ]; then
findmodule -ide-disk
fi
# If we have dasd devices, include the necessary modules (S/390)
if [ "x$PROBE" == "xyes" -a -d /proc/dasd ]; then
findmodule -dasd_mod
findmodule -dasd_eckd_mod
findmodule -dasd_fba_mod
fi
if [ "x$PROBE" == "xyes" ]; then
rootfs=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/") { print $3; }}' $fstab)
rootopts=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/") { print $4; }}' $fstab)
# in case the root filesystem is modular
findmodule -${rootfs}
rootdev=$(awk '/^[ \t]*[^#]/ { if ($2 == "/") { print $1; }}' $fstab)
# check if it's nfsroot
if [ "$rootfs" == "nfs" ]; then
remote=$(echo $rootdev | cut -d : -f 1)
# FIXME: this doesn't handle ips properly
remoteip=$(host $remote | cut -d ' ' -f 4)
netdev=`/sbin/ip route get to $remoteip |sed 's|.*dev \(.*\).*|\1|g' |awk {'print $1;'} |head -n 1`
net_list="$net_list $netdev"
# check if it's root by label
elif echo $rootdev | cut -c1-6 | grep -q "LABEL=" ; then
rootopts=$(echo $rootopts | sed -e 's/^r[ow],//' -e 's/,r[ow],$//' -e 's/,r[ow],/,/' \
-e 's/^r[ow]$/defaults/' -e 's/$/,ro/')
majmin=$(get_numeric_dev dec /dev/root)
if [ -n "$majmin" ]; then
dev=$(findall /sys/block -name dev | while read device ; do \
echo "$majmin" | cmp -s $device && echo $device ; done \
| sed -e 's,.*/\([^/]\+\)/dev,\1,' )
if [ -n "$dev" ]; then
vecho "Found root device $dev for $rootdev"
rootdev=$dev
fi
fi
else
rootopts=$(echo $rootopts | sed -e 's/^r[ow],//' -e 's/,r[ow],$//' -e 's/,r[ow],/,/' \
-e 's/^r[ow]$/defaults/' -e 's/$/,ro/')
fi
[ "$rootfs" != "nfs" ] && handlelvordev $rootdev
# find the first swap dev which would get used for swsusp
swsuspdev=$(awk '/^[ \t]*[^#]/ { if ($3 == "swap") { print $1; }}' $fstab \
| head -n 1)
if ! echo $swsuspdev | cut -c1-6 | grep -q "LABEL=" ; then
handlelvordev $swsuspdev
fi
fi
# If we use LVM or dm-based raid, include dm-mod
# XXX: dm not really supported yet.
testdm=""
[ -n "$vg_list" ] && testdm="yes"
[ -n "$forceraid" -o -n "$forcelvm" ] && testdm="yes"
[ -z "$nolvm" -o -z "$noraid" ] && testdm="yes"
[ "x$PROBE" != "xyes" ] && testdm=""
if [ -n "$testdm" ]; then
if [ -x /sbin/dmsetup -a -e /dev/mapper/control ]; then
dmout=$(/sbin/dmsetup ls 2>/dev/null)
if [ "$dmout" != "No devices found" -a "$dmout" != "" ]; then
findmodule -dm-mod
# DM requires all of these to be there in case someone used the
# feature. broken. (#132001)
findmodule -dm-mirror
findmodule -dm-zero
findmodule -dm-snapshot
fi
fi
if [ -x /sbin/dmraid -a -z "$nodmraid" ]; then
for raid in $(/sbin/dmraid -s -craidname 2>/dev/null | grep -vi "no raid disks" ) ; do
dmname=$(resolve_dm_name $raid)
if [ -n "$dmname" ]; then
DMRAIDS="$DMRAIDS $dmname"
fi
done
fi
fi
for n in $basicmodules; do
findmodule $n
done
for n in $CONFMODS; do
findmodule $n
done
finddmmods
vecho "Using modules:$MODULES"
MNTIMAGE=`mktemp -d ${TMPDIR}/initrd.XXXXXX`
IMAGE=`mktemp ${TMPDIR}/initrd.img.XXXXXX`
RCFILE=$MNTIMAGE/init
cemit()
{
cat >> $RCFILE
}
emit()
{
NONL=""
if [ "$1" == "-n" ]; then
NONL="-n"
shift
fi
echo $NONL "$@" >> $RCFILE
}
emitdm()
{
vecho "Adding dm map \"$1\""
UUID=$(dm_get_uuid "$1")
if [ -n "$UUID" ]; then
UUID="--uuid $UUID"
fi
emit dm create "$1" $UUID $(/sbin/dmsetup table "$1")
}
emitdms()
{
[ -z "$MPATHS" -a -z "$DMRAIDS" ] && return 0
echo dm list $MPATHS $DMRAIDS | nash --force --quiet | \
while read ACTION NAME ; do
case $ACTION in
rmparts)
emit rmparts "$NAME"
;;
create)
emitdm "$NAME"
;;
part)
emit dm partadd "$NAME"
;;
esac
done
}
if [ -z "$MNTIMAGE" -o -z "$IMAGE" ]; then
error "Error creating temporaries. Try again"
exit 1
fi
if [ -n "$KDUMP_CONFIG_FILE" ]; then
while read type location; do
case "$type" in
net)
#grab remote host and xlate into numbers
rhost=`echo $location | sed 's/.*@//' | cut -d':' -f1`
need_dns=`echo $rhost|grep [a-zA-Z]`
[ -n "$need_dns" ] && rhost=`host $rhost|cut -d' ' -f4`
#find ethernet device used to route to remote host, ie eth0
netdev=`/sbin/ip route get to $rhost 2>&1`
[ $? != 0 ] && echo "Bad kdump location: $location" && continue
netdev=`echo $netdev|awk '{print $3;}'|head -n 1`
#add the ethernet device to the list of modules
handlenetdev $netdev
#load nfs modules, if needed
echo $location | grep -v "@" > /dev/null && findmodule nfs
;;
*)
;;
esac
done < $KDUMP_CONFIG_FILE
fi
mkdir -p $MNTIMAGE
mkdir -p $MNTIMAGE/lib
mkdir -p $MNTIMAGE/bin
mkdir -p $MNTIMAGE/etc
mkdir -p $MNTIMAGE/dev
mkdir -p $MNTIMAGE/proc
mkdir -p $MNTIMAGE/sys
mkdir -p $MNTIMAGE/sysroot
ln -s bin $MNTIMAGE/sbin
if [ -e /etc/fstab.sys ]; then
inst /etc/fstab.sys "$MNTIMAGE/etc/fstab.sys"
fi
inst /sbin/nash "$MNTIMAGE/bin/nash"
inst /sbin/insmod.static "$MNTIMAGE/bin/insmod"
ln -s /sbin/nash $MNTIMAGE/sbin/modprobe
for MODULE in $MODULES; do
if [ -x /usr/bin/strip ]; then
/usr/bin/strip -g $verbose $MODULE -o $MNTIMAGE/lib/$(basename $MODULE)
else
cp $verbose -a $MODULE $MNTIMAGE/lib
fi
done
# mknod'ing the devices instead of copying them works both with and
# without devfs...
mkdir $MNTIMAGE/dev/mapper
mknod $MNTIMAGE/dev/ram0 b 1 0
mknod $MNTIMAGE/dev/ram1 b 1 1
ln -sf ram1 $MNTIMAGE/dev/ram
mknod $MNTIMAGE/dev/null c 1 3
mknod $MNTIMAGE/dev/zero c 1 5
mknod $MNTIMAGE/dev/systty c 4 0
for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 ; do
mknod $MNTIMAGE/dev/tty$i c 4 $i
done
for i in 0 1 2 3 ; do
mknod $MNTIMAGE/dev/ttyS$i c 4 $(($i + 64))
done
mknod $MNTIMAGE/dev/tty c 5 0
mknod $MNTIMAGE/dev/console c 5 1
mknod $MNTIMAGE/dev/ptmx c 5 2
mknod $MNTIMAGE/dev/rtc c 10 135
if [ "$(uname -m)" == "ia64" ]; then
mknod $MNTIMAGE/dev/efirtc c 10 136
fi
# FIXME -- this can really go poorly with clvm or duplicate vg names.
# nash should do lvm probing for us and write its own configs.
if [ -n "$vg_list" ]; then
inst /sbin/lvm.static "$MNTIMAGE/bin/lvm"
if [ -f /etc/lvm/lvm.conf ]; then
cp $verbose --parents /etc/lvm/lvm.conf $MNTIMAGE/
fi
fi
echo -n >| $RCFILE
cemit << EOF
#!/bin/nash
mount -t proc /proc /proc
setquiet
echo Mounting proc filesystem
echo Mounting sysfs filesystem
mount -t sysfs /sys /sys
echo Creating /dev
mount -o mode=0755 -t tmpfs /dev /dev
mkdir /dev/pts
mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts
mkdir /dev/shm
mkdir /dev/mapper
echo Creating initial device nodes
mknod /dev/null c 1 3
mknod /dev/zero c 1 5
mknod /dev/systty c 4 0
mknod /dev/tty c 5 0
mknod /dev/console c 5 1
mknod /dev/ptmx c 5 2
mknod /dev/rtc c 10 135
EOF
if [ "$(uname -m)" == "ia64" ]; then
emit "mknod $MNTIMAGE/dev/efirtc c 10 136"
fi
# XXX really we need to openvt too, in case someting changes the
# color palette and then changes vts on fbcon before gettys start.
# (yay, fbcon bugs!)
for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 ; do
emit "mknod /dev/tty$i c 4 $i"
done
for i in 0 1 2 3 ; do
emit "mknod /dev/ttyS$i c 4 $(($i + 64))"
done
emit "echo Setting up hotplug."
emit "hotplug"
emit "echo Creating block device nodes."
emit "mkblkdevs"
for MODULE in $MODULES; do
text=""
module=`echo $MODULE | sed "s|.*/||" | sed "s/.k\?o$//"`
fullmodule=`echo $MODULE | sed "s|.*/||"`
options=`sed -n -e "s/^options[ ][ ]*$module[ ][ ]*//p" $modulefile 2>/dev/null`
if [ -n "$options" ]; then
vecho "Adding module $module$text with options $options"
else
vecho "Adding module $module$text"
fi
emit "echo \"Loading $fullmodule module\""
emit "insmod /lib/$fullmodule $options"
# Hack - we need a delay after loading usb-storage to give things
# time to settle down before we start looking a block devices
if [ "$module" = "usb-storage" ]; then
emit "echo Waiting 8 seconds for driver initialization."
emit "sleep 8"
fi
if [ "$module" = "zfcp" -a -f /etc/zfcp.conf ]; then
emit "echo Waiting 2 seconds for driver initialization."
emit "sleep 2"
cat /etc/zfcp.conf | grep -v "^#" | tr "A-Z" "a-z" | while read DEVICE SCSIID WWPN SCSILUN FCPLUN; do
cemit <<EOF
echo -n $WWPN > /sys/bus/ccw/drivers/zfcp/${DEVICE/0x/}/port_add
echo -n $FCPLUN > /sys/bus/ccw/drivers/zfcp/${DEVICE/0x/}/$WWPN/unit_add
echo -n 1 > /sys/bus/ccw/drivers/zfcp/${DEVICE/0x/}/online
EOF
done
fi
done
if [ -n "$vg_list" ]; then
emit "echo Making device-mapper control node"
emit "mkdmnod"
fi
if [ -n "$net_list" ]; then
for netdev in $net_list; do
emit "echo Bringing up $netdev"
handle_netdev $netdev
emit $network
done
fi
# HACK: module loading + device creation isn't necessarily synchronous...
# this will make sure that we have all of our devices before trying
# things like RAID or LVM
emit "mkblkdevs"
emitdms
if [ -n "$raiddevices" ]; then
for dev in $raiddevices; do
cp -a /dev/${dev} $MNTIMAGE/dev
emit "raidautorun /dev/${dev}"
done
fi
if [ -n "$vg_list" ]; then
emit "echo Scanning logical volumes"
emit "lvm vgscan --ignorelockingfailure"
emit "echo Activating logical volumes"
emit "lvm vgchange -ay --ignorelockingfailure $vg_list"
fi
if [ -z "$noresume" -a -n "$swsuspdev" ]; then
emit "resume $swsuspdev"
fi
kdump_chk()
{
rc=`eval $1` && return $rc
echo "$KDUMP_CONFIG_FILE: $2"
exit 1
}
if [ -n "$KDUMP_CONFIG_FILE" ]; then
memtotal=`cat /proc/meminfo | grep MemTotal | awk '{print $2}'`
#timezone info for date which outputs YYYY-MM-DD-hh:mm
cp /etc/localtime $MNTIMAGE/etc/localtime
bin="/sbin/reboot /sbin/kcp"
#traverse the config file and setup each dump location
while read type location; do
[ -z "$type" ] && continue #skip empty lines
[ "`echo $type| grep ^# `" ] && continue #skip comments
kdump_chk "test -n \"$location\"" "Need a location for $type"
case "$type" in
\#*) continue;; #skip comments
raw)
#test raw partition
kdump_chk "dd if=$location count=1 of=/dev/null > /dev/null 2>&1" \
"Bad raw partition $location"
#TODO check for available size is greater than $memtotal
#setup raw case
emit "echo Saving to partition $location"
emit "dd if=/proc/vmcore of=$location"
emit "cond reboot -h -f"
bin="$bin /bin/dd"
;;
net)
#grab remote host and xlate into numbers
rhost=`echo $location | sed 's/.*@//' | cut -d':' -f1`
need_dns=`echo $rhost|grep [a-zA-Z]`
[ -n "$need_dns" ] && rhost=`host $rhost|cut -d' ' -f4`
#find the local ip being used as a route to remote ip
netdev=`/sbin/ip route get to $rhost 2>&1`
[ $? != 0 ] && echo "Bad kdump location: $location" && continue
lhost=`echo $netdev|awk '{print $5;}'|head -n 1`
emit "echo Saving to remote location $location"
if [ -z "`echo $location|grep @`" ]; then
#NFS path
#test nfs mount and directory creation
rlocation=`echo $location| sed 's/.*:/'"$rhost"':/'`
tmnt=`mktemp -dq`
kdump_chk "mount -t nfs -o nolock $rlocation $tmnt" \
"Bad NFS mount $location"
mkdir -p /mnt/var/crash
tdir=`mktemp -dqp /mnt/var/crash`
rc=$? && rm -rf $tdir && umount $tmnt && rm -rf $tmnt
if [ $rc != "0" ]; then
echo "Cannot create directory in $location: var/crash"
exit 1
fi
#TODO check for available size is greater than $memtotal
#setup nfs case
mkdir -p $MNTIMAGE/mnt
emit "mount -t nfs -o nolock $rlocation /mnt"
emit "cond kcp /proc/vmcore /mnt/var/crash/$lhost-%DATE/vmcore"
emit "cond reboot -h -f"
else
#SSH path
#rebuild $location replacing machine name with ip address
rlocation=`echo $location|sed 's/@.*/@'"$rhost"'/'`
#test ssh path and directory creation
s_opts="-o BatchMode=yes -o StrictHostKeyChecking=no"
kdump_chk "ssh -q $s_opts $rlocation mkdir -p /var/crash/ </dev/null" \
"Could not create $location:/var/crash, check ssh keys"
tdir=`ssh -q $s_opts $rlocation mktemp -dqp /var/crash </dev/null`
if [ $? != "0" ]; then
echo "$KDUMP_CONFIG_FILE: Could not create temp directory in $location:/var/crash"
exit 1
fi
ssh -q $s_opts $rlocation rm -rf $tdir </dev/null
#TODO check for available size is greater than $memtotal
#setup ssh case, quick check to see if setup already
if [ ! -r $MNTIMAGE/dev/urandom ]; then
#only need to do these once
grep "^root" /etc/passwd > $MNTIMAGE/etc/passwd
mkdir -p $MNTIMAGE/root
cp -a /root/.ssh $MNTIMAGE/root/
cp -a /etc/ssh $MNTIMAGE/etc
mknod $MNTIMAGE/dev/urandom c 1 9
emit "mknod /dev/urandom c 1 9"
fi
emit "dd if=/dev/mem of=/dev/urandom count=1 bs=512 skip=100"
emit "cond kcp --ssh $rlocation:/var/crash/$lhost-%DATE/vmcore"
emit "cond kcp --ssh /proc/vmcore"
emit "cond reboot -h -f"
bin="$bin /usr/bin/scp /usr/bin/ssh /bin/dd"
#ssh, scp require libraries that aren't found with ldd
lib=/lib && [ -d "/lib64" ] && lib=/lib64
k_extras="/$lib/libnss_compat.so.2 /$lib/libnss_files.so.2"
fi
;;
default)
[ "$location" == "reboot" ] && emit "reboot -h -f"
#else load normally on default failure case
;;
*)
#test filesystem and directory creation
kdump_chk "test -f /sbin/fsck.$type" "Unsupported type $type"
kdump_chk "mount -t $type $location /mnt" "Bad mount point $location"
mkdir -p /mnt/var/crash
tdir=`mktemp -dqp /mnt/var/crash/`
rc=$? && rm -rf $tdir && umount /mnt
if [ $rc != "0" ]; then
echo "Cannot create directory in $location: /var/crash"
exit 1
fi
#TODO check for available size is greater than $memtotal
#setup filesystem case
lhost="127.0.0.1"
mkdir -p $MNTIMAGE/mnt
touch $MNTIMAGE/etc/mtab
emit "echo Saving to the local filesystem $location"
emit "fsck.$type $location"
emit "cond mount -t $type $location /mnt"
emit "cond kcp /proc/vmcore /mnt/var/crash/$lhost-%DATE/vmcore"
emit "cond umount /mnt"
emit "cond reboot -h -f"
bin="$bin /sbin/fsck.$type /bin/mount"
;;
esac
done < $KDUMP_CONFIG_FILE
#find the shared libraries. this snippet taken from kboot
kdump_libs=`for n in $bin; do
ldd "$n" 2>/dev/null | tr -s '\011' ' ' |
sed 's/.*=> *//;s/^ *//;/ *(0x.*)/s///p;d'
done | sort | uniq | sed '/^ *$/d'`
#copy the binaries and their shared libraries to the archive
for n in $bin $kdump_libs $k_extras; do
mkdir -p $MNTIMAGE/`dirname $n`
cp $n $MNTIMAGE/$n
done
fi
emit "echo Creating root device."
# mkrootdev does "echo /dev/root /sysroot ext3 defaults,ro 0 0 >/etc/fstab"
emit "mkrootdev -t $rootfs -o $rootopts $rootdev"
rootdev=/dev/root
emit "echo Mounting root filesystem."
emit "mount /sysroot"
emit "echo Setting up other filesystems."
emit "setuproot"
emit "echo Switching to new root and running init."
emit "switchroot"
chmod +x $RCFILE
(cd $MNTIMAGE; findall . | cpio --quiet -c -o) >| $IMAGE || exit 1
if [ -n "$compress" ]; then
gzip -9 < $IMAGE >| $target || rc=1
else
cp -a $IMAGE $target || rc=1
fi
rm -rf $MNTIMAGE $IMAGE
if [ -n "$MNTPOINT" ]; then rm -rf $MNTPOINT ; fi
exit $rc