The following patch provides feature to generate special initrd for
regular kernel which can load the dump capture kernel while booting.
--- mkinitrd.orig 2005-08-24 18:55:49.000000000 +0530
+++ mkinitrd 2005-08-24 18:55:44.000000000 +0530
@@ -101,6 +101,8 @@ Options:
-r root Override ROOT setting in mkinitrd.conf.
-c dump_device Copy dump to this device
-f dump_dev_fs Filesystem on the dump device
+ -i initrd Capture kernel's initrd
+ -v kernel_image Capture kernel (vmlinux only for now)
See mkinitrd(8) for further details.
EOF
@@ -1213,6 +1215,9 @@ gendir() {
/sbin/pivot_root /bin/cat /bin/mknod \
/usr/sbin/chroot /bin/uname \
$([ $kdump_capture -eq 1 ] && find /bin /sbin -name dd
&& find /bin /sbin -name reboot) \
+ $([ $auto_kdump -eq 1 ] && for i in `find / -noleaf
-type f -name kexec`; do
+ echo $i; break;
+ done ) \
`command -v stat` $readlink \
`cat "$@" exe`
do
@@ -1289,6 +1294,12 @@ gendir() {
> etc/mtab
+ if [ $auto_kdump -eq 1 ]; then
+ cp $capture_initrd capture_initrd
+ cp $capture_kernel capture_kernel
+ fi
+
+
if [ $kdump_capture -eq 1 -a ! -b "${dump_dev#/}" ]; then
dump_maj=$(ls -l $dump_dev | cut -d " " -f 6 | cut -d "," -f 1)
dump_min=$(ls -l $dump_dev | cut -d " " -f 7)
@@ -1323,6 +1334,13 @@ umount /dump
echo Rebooting the system
reboot -f" >> script
fi
+
+ if [ "$auto_kdump" -eq 1 ]; then
+ echo "mount -t sysfs sys /sys
+echo Kexec loading the capture kernel
+`find . -name kexec` -p capture_kernel --args-linux --crash-dump
--initrd="capture_initrd" --append='root=$device init 1'
+echo Kexec loading done ">> script
+ fi
}
ORIGDIR=`pwd`
@@ -1331,11 +1349,12 @@ PROG="$0"
dump_dev=""
dump_fs=""
kdump_capture=0
+auto_kdump=0
CONFDIR=/etc/mkinitrd
unset keep croot cmkimage out || :
-while getopts "d:km:o:r:c:f:" flag; do
+while getopts "d:km:o:r:c:f:i:v:" flag; do
case $flag in
d)
CONFDIR="$OPTARG"
@@ -1364,6 +1383,12 @@ while getopts "d:km:o:r:c:f:" flag; do
f)
dump_fs=$OPTARG
;;
+ i)
+ capture_initrd=$OPTARG
+ ;;
+ v)
+ capture_kernel=$OPTARG
+ ;;
*)
usage
;;
@@ -1389,6 +1414,36 @@ else
kdump_capture=1
fi
+if [ $kdump_capture -eq 0 ]; then
+ if [ -z "$capture_initrd" -a -z "$capture_kernel" ]; then
+ auto_kdump=0
+ elif [ ! -z "$capture_initrd" -a -z "$capture_kernel" ]; then
+ echo 'Please specify the capture kernel'
+ usage
+ exit 1
+ elif [ -z "$capture_initrd" -a ! -z "$capture_kernel" ]; then
+ echo " Please specify the capture kernel's initrd "
+ usage
+ exit 1
+ else
+ if [ ! -e "$capture_initrd" ]; then
+ echo Capture kernel initrd "$capture_initrd" does not
exist...Aborting
+ exit 1
+ fi
+ if [ ! -e "$capture_kernel" ]; then
+ echo Capture kernel image "$capture_kernel" does not
exist...Aborting
+ exit 1
+ else
+ if [ $(file $capture_kernel | cut -d " " -f 2) != "ELF"
]; then
+ echo Capture kernel image "$capture_kernel" is
not an ELF \
+ executable...Aborting
+ exit 1
+ fi
+ fi
+ auto_kdump=1
+ fi
+fi
+
VERSION=$1
[ $# -gt 0 ] || unset VERSION
case $VERSION in
--
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