Attachment 317435 Details for Bug 463399 – init from the generated Kdump initramfs

init from the generated Kdump initramfs

init (text/plain), 5.95 KB, created by Qian Cai on 2008-09-23 06:25:08 UTC

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Creator: Qian Cai

Created: 2008-09-23 06:25:08 UTC

Size: 5.95 KB

patch

obsolete

>#!/bin/msh
>export PATH=/sbin:/usr/sbin:/bin:/usr/bin:/scriptfns
>mount -t proc /proc /proc
>echo Mounting proc filesystem
>echo Mounting sysfs filesystem
>mount -t sysfs /sys /sys
>echo 1 > /proc/sys/vm/dirty_background_ratio
>echo 5 > /proc/sys/vm/dirty_ratio
>echo 10 > /proc/sys/vm/dirty_writeback_centisecs
>echo 50 > /proc/sys/vm/dirty_expire_centisecs
>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
>mknod /dev/urandom c 1 9
>mknod /dev/tty0 c 4 0
>mknod /dev/tty1 c 4 1
>mknod /dev/tty2 c 4 2
>mknod /dev/tty3 c 4 3
>mknod /dev/tty4 c 4 4
>mknod /dev/tty5 c 4 5
>mknod /dev/tty6 c 4 6
>mknod /dev/tty7 c 4 7
>mknod /dev/tty8 c 4 8
>mknod /dev/tty9 c 4 9
>mknod /dev/tty10 c 4 10
>mknod /dev/tty11 c 4 11
>mknod /dev/tty12 c 4 12
>mknod /dev/ttyS0 c 4 64
>mknod /dev/ttyS1 c 4 65
>mknod /dev/ttyS2 c 4 66
>mknod /dev/ttyS3 c 4 67
>mknod /dev/mem c 1 1
>echo "Loading scsi_mod.ko module"
>insmod /lib/scsi_mod.ko 
>echo "Loading sd_mod.ko module"
>insmod /lib/sd_mod.ko 
>echo "Loading cciss.ko module"
>insmod /lib/cciss.ko 
>echo "Loading jbd.ko module"
>insmod /lib/jbd.ko 
>echo "Loading ext3.ko module"
>insmod /lib/ext3.ko 
>echo "Loading dm-mod.ko module"
>insmod /lib/dm-mod.ko 
>echo "Loading dm-log.ko module"
>insmod /lib/dm-log.ko 
>echo "Loading dm-mirror.ko module"
>insmod /lib/dm-mirror.ko 
>echo "Loading dm-zero.ko module"
>insmod /lib/dm-zero.ko 
>echo "Loading dm-snapshot.ko module"
>insmod /lib/dm-snapshot.ko 
>echo "Waiting for required block device discovery"
>for i in `cat /etc/critical_disks`
>do
>    echo -n Waiting for $i...
>    while [ ! -d /sys/block/$i ]
>    do
>        sleep 1
>    done
>    echo Found
>done
>echo Creating Block Devices
>mkdir /dev/cciss
>mkdir /dev/ida
>for i in `ls /sys/block`; do
>  MAJOR_NUM=`cat /sys/block/$i/dev | cut -d: -f1`
>  MINOR_NUM=`cat /sys/block/$i/dev | cut -d: -f2`
>  MINOR_RANGE=`cat /sys/block/$i/range | cut -d: -f2`
>  PART_SEP=''
>  i=`echo $i | sed 's/\!/\//g'`
>  if echo $i | grep -q '^cciss'; then
>      PART_SEP='p'
>  elif echo $i | grep -q '^ida'; then
>      PART_SEP='p'
>  fi
>  echo Creating block device $i
>  mknod /dev/$i b $MAJOR_NUM $MINOR_NUM
>  if [ "$MINOR_RANGE" -gt 1 ]
>  then
>    MINOR_END=`echo $MINOR_NUM $MINOR_RANGE + p | dc`
>    MINOR_START=`echo $MINOR_NUM 1 + p | dc`
>    PART_NUM=1
>    for j in `seq $MINOR_START 1 $MINOR_END`
>    do
>       if [ ! -e /dev/$i$PART_NUM ]
>       then
>            mknod /dev/$i$PART_SEP$PART_NUM b $MAJOR_NUM $j
>       fi
>       PART_NUM=`expr $PART_NUM + 1`
>    done
>  fi
>done
>if [ -f /etc/mdadm.conf ]
>then
>  for i in `grep -v "#" /etc/mdadm.conf | awk '/.*ARRAY.*/{print $2}'`
>  do
>          MD_MIN=`echo $i | sed -e's/$^[^0-9]*$$[0-9]\+$$/\2/'`
>          mknod $i b 9 $MD_MIN
>  done
>fi
>echo Making device-mapper control node
>DM_MAJ=`cat /proc/devices | grep misc | cut -d" " -f2`
>DM_MIN=`cat /proc/misc | grep device-mapper | cut -d" " -f2`
>mknod /dev/mapper/control b $DM_MAJ $DM_MIN
>if [ -f /etc/mdadm.conf ]
>then
>  mdadm -A -s
>fi
>echo Scanning logical volumes
>lvm vgscan --ignorelockingfailure --mknodes
>echo Activating logical volumes
>lvm vgchange -a y --ignorelockingfailure
>DM_NUM=0
>lvm lvs --noheadings -o lv_name,vg_name | while read i
>do
>   LV=`echo $i | awk '{ print $1 }'`
>   VGRP=`echo $i | awk '{ print $2 }'`
>   mkdir -p /dev/$VGRP
>   if [ ! -e /dev/$VGRP/$LV ]
>   then
>      ln -s /dev/mapper/$VGRP-$LV /dev/$VGRP/$LV
>      DM_NUM=`echo $DM_NUM 1 + p | dc`
>      if [ -z "$noresume" ]
>      then
>        /sbin/dmsetup.static resume /dev/mapper/$VGRP-$LV
>      fi
>   fi
>done
>. /etc/clock
> if [ "$UTC" == true ]
> then
>    TIME_FORMAT=-u
> else
>    TIME_FORMAT=-l
>fi
>hwclock --hctosys $TIME_FORMAT
>DATE=`date +%Y-%m-%d-%T`
>echo Saving to the local filesystem /dev/mapper/VolGroup00-LogVol00
>DUMPDEV=/dev/mapper/VolGroup00-LogVol00
>IS_LABEL=`echo $DUMPDEV | grep LABEL`
>IS_UUID=`echo $DUMPDEV | grep UUID`
>if [ -n "$IS_LABEL" -o -n "$IS_UUID" ] 
>then
>  DUMPDEV=`findfs $DUMPDEV`
>fi
>fsck.ext3 $DUMPDEV
>mount -t ext3 $DUMPDEV /mnt
>if [ $? == 0 ]
>then
>  mkdir -p /mnt//var/crash/127.0.0.1-$DATE
>  VMCORE=/mnt//var/crash/127.0.0.1-$DATE/vmcore
>  export VMCORE
>  monitor_cp_progress $VMCORE-incomplete &
>  cp /proc/vmcore $VMCORE-incomplete >/dev/null
>  exitcode=$?
>  if [ $exitcode == 0 ]
>  then
>      mv $VMCORE-incomplete $VMCORE
>      echo -e "\\033[0JSaving core complete"
>  fi
>fi
>umount /mnt
>[ $exitcode == 0 ] && reboot -f
>reboot -f
>echo Creating root device.
>#check to see if we have root= on the command line
>ROOTDEV=`cat /proc/cmdline | grep root=`
>if [ -n "$ROOTDEV" ]
>then
>   ROOTDEV=`cat /proc/cmdline | sed 's/^.*root=//' | cut -d" " -f1`
>   IS_LABEL=`echo $ROOTDEV | grep LABEL`
>   IS_UUID=`echo $ROOTDEV | grep UUID`
>   if [ -n "$IS_LABEL" -o -n "$IS_UUID" ] 
>   then
>      ROOTDEV=`findfs $ROOTDEV`
>   fi
>else
>   #we need to get the root major/minor from real-root-dev
>   ROOT_DEV_NR=`cat /proc/sys/kernel/real-root-dev`
>   ROOT_MIN=`echo $ROOT_DEV_NR | sed -e's/$[0-9a-f]\{1,2\}$$[0-9a-f]\{2\}$/\2/'`
>   ROOT_MAJ=`echo $ROOT_DEV_NR | sed -e's/$[0-9a-f]\{1,2\}$$[0-9a-f]\{2\}$/\1/'`
>   mknod /dev/rootdev b 0x$ROOT_MAJ 0x$ROOT_MIN
>   ROOTDEV=/dev/rootdev
>fi
>echo Checking root filesystem.
>fsck $ROOTDEV
>echo Mounting root filesystem.
>for FSTYPE in ext3 ext2 minix
>do
>  echo Trying mount -t $FSTYPE $ROOTDEV /sysroot
>  mount -t $FSTYPE $ROOTDEV /sysroot >/dev/null 2>&1 
>  if [ $? == 0 ]
>  then
>      echo Using $FSTYPE on root filesystem
>      ROOT_MOUNT_GOOD=1
>      break;
>  fi
>done
>if [ -z "$ROOT_MOUNT_GOOD" ]
>then
>   echo unable to mount rootfs. Dropping to shell
>   /bin/msh
>fi
>#move various filesystems and prime the rootfs to boot properly
>umount /proc
>mount -t proc proc /sysroot/proc
>umount /sys
>mount -t sysfs sysfs /sysroot/sys
>mount -o bind /dev /sysroot/dev
>touch /sysroot/fastboot
>echo Switching to new root and running init.
>exec switch_root /sysroot /sbin/init

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Attachments on bug 463399: 317435