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checking in initial changes to convert kdump to use busybox rather than

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nash
This commit is contained in:
Neil Horman 2006-09-18 17:59:46 +00:00
parent ae7dce0148
commit f9718a1ad6
1 changed files with 171 additions and 52 deletions
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219
mkdumprd
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@ -66,6 +66,7 @@ fstab="/etc/fstab"
vg_list="" vg_list=""
net_list="" net_list=""
USING_METHOD="raw"
vecho() vecho()
{ {
@ -832,6 +833,12 @@ if [ -n "$KDUMP_CONFIG_FILE" ]; then
net) net)
#grab remote host and xlate into numbers #grab remote host and xlate into numbers
rhost=`echo $location | sed 's/.*@//' | cut -d':' -f1` rhost=`echo $location | sed 's/.*@//' | cut -d':' -f1`
USE_SSH=`echo $location | grep @`
if [ -n "$USE_SSH" ]; then
USING_METHOD="ssh"
else
USING_METHOD="nfs"
fi
need_dns=`echo $rhost|grep [a-zA-Z]` need_dns=`echo $rhost|grep [a-zA-Z]`
[ -n "$need_dns" ] && rhost=`host $rhost|cut -d' ' -f4` [ -n "$need_dns" ] && rhost=`host $rhost|cut -d' ' -f4`
@ -846,19 +853,46 @@ if [ -n "$KDUMP_CONFIG_FILE" ]; then
#load nfs modules, if needed #load nfs modules, if needed
echo $location | grep -v "@" > /dev/null && findmodule nfs echo $location | grep -v "@" > /dev/null && findmodule nfs
;; ;;
raw)
USING_METHOD="raw"
;;
ifc) ifc)
KDUMP_IFC=$location KDUMP_IFC=$location
if [ -n "$network" ]; then if [ -n "$network" ]; then
network=`echo $network | sed -e's/\(^.* \)\('$netdev'\)\( .*$\)/\1 '$KDUMP_IFC' \3/'` network=`echo $network | sed -e's/\(^.* \)\('$netdev'\)\( .*$\)/\1 '$KDUMP_IFC' \3/'`
fi fi
;; ;;
core_collector)
if [ -x /sbin/makedumpfile ]; then
CORE_COLLECTOR=$location
CORE_COLLECTOR=`echo $CORE_COLLECTOR | sed -e's/makedumpfile/makedumpfile -i \/etc\/makedumpfile.config/'`
else
echo "Cannot use the core_collector option on this arch"
rm -rf $MNTIMAGE
rm -rf $IMAGE
exit 1
fi
;;
*) *)
USING_METHOD="local_fs"
;; ;;
esac esac
done < $KDUMP_CONFIG_FILE done < $KDUMP_CONFIG_FILE
fi fi
if [ -n "$CORE_COLLECTOR" ]; then
if [ "$USING_METHOD" == "ssh" ] || [ "$USING_METHOD" == "raw" ]; then
echo "You may only use alternate core collectors with the NFS and Local Filesystem targets"
rm -rf $MNTIMAGE
rm -rf $IMAGE
exit 1
fi
fi
#START BUILDING INITRD HERE
mkdir -p $MNTIMAGE mkdir -p $MNTIMAGE
mkdir -p $MNTIMAGE/lib mkdir -p $MNTIMAGE/lib
mkdir -p $MNTIMAGE/bin mkdir -p $MNTIMAGE/bin
@ -867,14 +901,54 @@ mkdir -p $MNTIMAGE/dev
mkdir -p $MNTIMAGE/proc mkdir -p $MNTIMAGE/proc
mkdir -p $MNTIMAGE/sys mkdir -p $MNTIMAGE/sys
mkdir -p $MNTIMAGE/sysroot mkdir -p $MNTIMAGE/sysroot
mkdir -p $MNTIMAGE/modules
ln -s bin $MNTIMAGE/sbin ln -s bin $MNTIMAGE/sbin
#if we are using makedumpfile here, then generate the config file
if [ -n "$CORE_COLLECTOR" ]; then
RUN_KERN_VER=`uname -r`
/sbin/makedumpfile -g $MNTIMAGE/etc/makedumpfile.config -x /usr/lib/debug/lib/modules/$RUN_KERN_VER/vmlinux /boot/System.map-$RUN_KERN_VER
if [ $? != 0 ]; then
echo "could not generate makedumpfile configuration. aborting"
rm -rf $MNTIMAGE
rm -rf $IMAGE
exit 1;
fi
fi
#copy in busybox and make symlinks to its supported utilities
cp /sbin/busybox $MNTIMAGE/sbin/busybox
cd $MNTIMAGE/sbin
for i in `/sbin/busybox |
awk 'BEGIN {found=0} /.*/ { if (found) print $0 } /Currently/ {found=1}' |
sed -e's/,//g' -e's/busybox//g'`
do
ln -s busybox $MNTIMAGE/sbin/$i
done
cd -
#Busybox doesn't have a /bin/sh applet,
#so we build a reasonable faximilie here
cat >> $MNTIMAGE/bin/sh << EOF
#!/bin/msh
#drop the -c from the command line
shift 1
#now execute the passed command
#don't exec this or $@ won't work
/bin/msh -c "\$@"
EOF
chmod 755 $MNTIMAGE/bin/sh
if [ -e /etc/fstab.sys ]; then if [ -e /etc/fstab.sys ]; then
inst /etc/fstab.sys "$MNTIMAGE/etc/fstab.sys" inst /etc/fstab.sys "$MNTIMAGE/etc/fstab.sys"
fi fi
inst /sbin/nash "$MNTIMAGE/bin/nash"
inst /sbin/insmod.static "$MNTIMAGE/bin/insmod" #build a good passwd file
ln -s /sbin/nash $MNTIMAGE/sbin/modprobe cat >> $MNTIMAGE/etc/passwd << EOF
root:x:0:0:root:/root:/bin/bash
EOF
for MODULE in $MODULES; do for MODULE in $MODULES; do
if [ -x /usr/bin/strip ]; then if [ -x /usr/bin/strip ]; then
@ -920,7 +994,7 @@ fi
echo -n >| $RCFILE echo -n >| $RCFILE
cemit << EOF cemit << EOF
#!/bin/nash #!/bin/msh
mount -t proc /proc /proc mount -t proc /proc /proc
setquiet setquiet
@ -941,6 +1015,7 @@ mknod /dev/tty c 5 0
mknod /dev/console c 5 1 mknod /dev/console c 5 1
mknod /dev/ptmx c 5 2 mknod /dev/ptmx c 5 2
mknod /dev/rtc c 10 135 mknod /dev/rtc c 10 135
EOF EOF
if [ "$(uname -m)" == "ia64" ]; then if [ "$(uname -m)" == "ia64" ]; then
emit "mknod $MNTIMAGE/dev/efirtc c 10 136" emit "mknod $MNTIMAGE/dev/efirtc c 10 136"
@ -958,12 +1033,6 @@ for i in 0 1 2 3 ; do
done done
emit "mknod /dev/mem c 1 1" emit "mknod /dev/mem c 1 1"
emit "echo Setting up hotplug."
emit "hotplug"
emit "echo Creating block device nodes."
emit "mkblkdevs"
for MODULE in $MODULES; do for MODULE in $MODULES; do
text="" text=""
module=`echo $MODULE | sed "s|.*/||" | sed "s/.k\?o$//"` module=`echo $MODULE | sed "s|.*/||" | sed "s/.k\?o$//"`
@ -998,42 +1067,65 @@ EOF
fi fi
done done
# 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 "echo Creating Block Devices"
emit "for i in \`ls /sys/block\`; do"
emit " MAJOR_NUM=\`cat /sys/block/\$i/dev | cut -d":" -f1\`"
emit " MINOR_NUM=\`cat /sys/block/\$i/dev | cut -d":" -f2\`"
emit " echo Creating block device \$i"
emit " mknod /dev/\$i b \$MAJOR_NUM \$MINOR_NUM"
emit " MINOR_END=\`echo \$MINOR_NUM 10 + p | dc\`"
emit " MINOR_START=\`echo \$MINOR_NUM 1 + p | dc\`"
emit " for j in \`seq \$MINOR_START 1 \$MINOR_END\`"
emit " do"
emit " mknod /dev/\$i\$j b \$MAJOR_NUM \$j"
emit " done"
emit "done"
if [ -n "$vg_list" ]; then if [ -n "$vg_list" ]; then
emit "echo Making device-mapper control node" emit "echo Making device-mapper control node"
emit "mkdmnod" emit "DM_MAJ=\`cat /proc/devices | grep misc | cut -d\" \" -f2\`"
emit "DM_MIN=\`cat /proc/misc | grep device-mapper | cut -d\" \" -f2\`"
emit "mknod /dev/mapper/control b \$DM_MAJ \$DM_MIN"
fi fi
if [ -n "$net_list" ]; then if [ -n "$net_list" ]; then
for netdev in $net_list; do for netdev in $net_list; do
emit "echo Bringing up $netdev" emit "echo Bringing up $netdev"
handle_netdev $netdev handle_netdev $netdev
emit $network #emit $network
done done
fi fi
# HACK: module loading + device creation isn't necessarily synchronous...
# this will make sure that we have all of our devices before trying
# things like RAID or LVM
emit "mkblkdevs"
emitdms emitdms
if [ -n "$raiddevices" ]; then if [ -n "$raiddevices" ]; then
for dev in $raiddevices; do for dev in $raiddevices; do
cp -a /dev/${dev} $MNTIMAGE/dev cp -a /dev/${dev} $MNTIMAGE/dev
emit "raidautorun /dev/${dev}" emit "\#need code here to set up md devs"
done done
fi fi
if [ -n "$vg_list" ]; then if [ -n "$vg_list" ]; then
emit "echo Scanning logical volumes" emit "echo Scanning logical volumes"
emit "lvm vgscan --ignorelockingfailure" emit "lvm vgscan --ignorelockingfailure --mknodes"
emit "echo Activating logical volumes" emit "echo Activating logical volumes"
emit "lvm vgchange -ay --ignorelockingfailure $vg_list" emit "lvm vgchange -a y --ignorelockingfailure"
fi emit "for i in \`lvm lvs | awk '/Log.*/ { print \$1}'\`"
emit "do"
if [ -z "$noresume" -a -n "$swsuspdev" ]; then emit " VGRP=\`lvm lvs | grep \$i | cut -d\" \" -f4\`"
emit "resume $swsuspdev" emit " mkdir -p /dev/\$VGRP"
emit " if [ ! -e /dev/\$VGRP/\$i ]"
emit " then"
emit " ln -s /dev/mapper/\$VGRP-\$i /dev/\$VGRP/\$i"
emit " if [ -z \"\$noresume\" ]"
emit " then"
emit " /sbin/dmsetup resume /dev/mapper/\$VGRP-\$i"
emit " fi"
emit " fi"
emit "done"
fi fi
kdump_chk() kdump_chk()
@ -1048,7 +1140,10 @@ if [ -n "$KDUMP_CONFIG_FILE" ]; then
#timezone info for date which outputs YYYY-MM-DD-hh:mm #timezone info for date which outputs YYYY-MM-DD-hh:mm
cp /etc/localtime $MNTIMAGE/etc/localtime cp /etc/localtime $MNTIMAGE/etc/localtime
bin="/sbin/reboot /sbin/kcp /bin/mkdir" bin="/sbin/dmsetup /sbin/kcp /usr/bin/scp /usr/bin/ssh /sbin/kcp /sbin/ethtool /sbin/mdadm"
#ssh, scp require libraries that aren't found with ldd
lib=/lib && [ -d "/lib64" ] && lib=/lib64
k_extras="/$lib/libnss_compat.so.2 /$lib/libnss_files.so.2"
#traverse the config file and setup each dump location #traverse the config file and setup each dump location
while read type location; do while read type location; do
@ -1069,14 +1164,12 @@ if [ -n "$KDUMP_CONFIG_FILE" ]; then
emit "echo Saving to partition $location" emit "echo Saving to partition $location"
emit "dd if=/proc/vmcore of=$location" emit "dd if=/proc/vmcore of=$location"
emit "cond reboot -h -f" emit "cond reboot -h -f"
bin="$bin /bin/dd"
;; ;;
net) net)
#ssh, scp require libraries that aren't found with ldd if [ -n "$CORE_COLLECTOR" ]; then
lib=/lib && [ -d "/lib64" ] && lib=/lib64 bin="$bin /sbin/makedumpfile"
k_extras="/$lib/libnss_compat.so.2 /$lib/libnss_files.so.2" fi
bin="$bin /usr/bin/scp /usr/bin/ssh /bin/dd /bin/cp"
#build an /etc/passwd for scp to work properly #build an /etc/passwd for scp to work properly
grep "^root" /etc/passwd > $MNTIMAGE/etc/passwd grep "^root" /etc/passwd > $MNTIMAGE/etc/passwd
@ -1098,7 +1191,6 @@ if [ -n "$KDUMP_CONFIG_FILE" ]; then
emit "echo Saving to remote location $location" emit "echo Saving to remote location $location"
if [ -z "`echo $location|grep @`" ]; then if [ -z "`echo $location|grep @`" ]; then
#NFS path #NFS path
#test nfs mount and directory creation #test nfs mount and directory creation
rlocation=`echo $location| sed 's/.*:/'"$rhost"':/'` rlocation=`echo $location| sed 's/.*:/'"$rhost"':/'`
tmnt=`mktemp -dq` tmnt=`mktemp -dq`
@ -1112,17 +1204,21 @@ if [ -n "$KDUMP_CONFIG_FILE" ]; then
echo "Cannot create directory in $location: var/crash" echo "Cannot create directory in $location: var/crash"
exit 1 exit 1
fi fi
if [ -z "$CORE_COLLECTOR" ]; then
CORE_COLLECTOR="cp"
fi
#TODO check for available size is greater than $memtotal #TODO check for available size is greater than $memtotal
#setup nfs case #setup nfs case
mkdir -p $MNTIMAGE/mnt mkdir -p $MNTIMAGE/mnt
emit "mount -t nfs -o nolock $rlocation /mnt" emit "mount -t nfs -o nolock $rlocation /mnt"
emit "dd if=/dev/mem of=/dev/urandom count=1 bs=512 skip=100" emit "dd if=/dev/mem of=/dev/urandom count=1 bs=512 skip=100"
emit "cond kcp --local /proc/vmcore /mnt/var/crash/$lhost-%DATE" emit "$CORE_COLLECTOR /proc/vmcore /mnt/var/crash/$lhost-%DATE"
emit "cond reboot -h -f" emit "reboot -f"
else else
#SSH path #SSH path
#rebuild $location replacing machine name with ip address #rebuild $location replacing machine name with ip address
rlocation=`echo $location|sed 's/@.*/@'"$rhost"'/'` rlocation=`echo $location|sed 's/@.*/@'"$rhost"'/'`
#test ssh path and directory creation #test ssh path and directory creation
@ -1148,13 +1244,15 @@ if [ -n "$KDUMP_CONFIG_FILE" ]; then
fi fi
emit "dd if=/dev/mem of=/dev/urandom count=1 bs=512 skip=100" emit "dd if=/dev/mem of=/dev/urandom count=1 bs=512 skip=100"
emit "cond kcp --ssh /proc/vmcore $rlocation:/var/crash/$lhost-%DATE" emit "cond kcp --ssh /proc/vmcore $rlocation:/var/crash/$lhost-%DATE"
emit "cond reboot -h -f" emit "cond reboot -f"
fi fi
;; ;;
ifc) ifc)
;; ;;
core_collector)
;;
default) default)
[ "$location" == "reboot" ] && emit "reboot -h -f" [ "$location" == "reboot" ] && emit "reboot -f"
#else load normally on default failure case #else load normally on default failure case
;; ;;
*) *)
@ -1171,16 +1269,25 @@ if [ -n "$KDUMP_CONFIG_FILE" ]; then
#TODO check for available size is greater than $memtotal #TODO check for available size is greater than $memtotal
#setup filesystem case #setup filesystem case
lhost="127.0.0.1"
mkdir -p $MNTIMAGE/mnt mkdir -p $MNTIMAGE/mnt
touch $MNTIMAGE/etc/mtab touch $MNTIMAGE/etc/mtab
if [ -z "$CORE_COLLECTOR" ]; then
CORE_COLLECTOR="cp"
fi
emit "DATE=\`date +%Y-%M-%d-%T\`"
emit "echo Saving to the local filesystem $location" emit "echo Saving to the local filesystem $location"
emit "fsck.$type $location" emit "fsck.$type $location"
emit "cond mount -t $type $location /mnt" emit "mount -t $type $location /mnt"
emit "cond kcp --local /proc/vmcore /mnt/var/crash/$lhost-%DATE" emit "if [ \$? == 0 ]"
emit "cond umount /mnt" emit "then"
emit "cond reboot -h -f" emit " mkdir -p /proc/vmcore/var/crash/127.0.0.1-\$DATE"
bin="$bin /sbin/fsck.$type /bin/mount" emit " $CORE_COLLECTOR /proc/vmcore /mnt/var/crash/127.0.0.1-\$DATE/vmcore"
emit " if [ \$? == 0 ]"
emit " then"
emit " reboot -f"
emit " fi"
emit "fi"
emit "umount /mnt"
;; ;;
esac esac
done < $KDUMP_CONFIG_FILE done < $KDUMP_CONFIG_FILE
@ -1199,18 +1306,30 @@ if [ -n "$KDUMP_CONFIG_FILE" ]; then
fi fi
emit "echo Creating root device." emit "echo Creating root device."
# mkrootdev does "echo /dev/root /sysroot ext3 defaults,ro 0 0 >/etc/fstab" emit "#check to see if we have root= on the command line"
emit "mkrootdev -t $rootfs -o $rootopts $rootdev" emit "ROOTDEV=\`cat /proc/cmdline | grep root=\`"
rootdev=/dev/root emit "if [ -n \"\$ROOTDEV\" ]"
emit "then"
emit " ROOTDEV=\`cat /proc/cmdline | cut -d\" \" -f2 | sed -e's/root=//'\`"
emit "else"
emit " #we need to get the root major/minor from real-root-dev"
emit " ROOT_DEV_NR=\`cat /proc/sys/kernel/real-root-dev\`"
emit " ROOT_MIN=\`echo \$ROOT_DEV_NR | sed -e's/\\([0-9a-f]\\{1,2\\}\\)\\([0-9a-f]\\{2\\}\\)/\\2/'\`"
emit " ROOT_MAJ=\`echo \$ROOT_DEV_NR | sed -e's/\\([0-9a-f]\\{1,2\\}\\)\\([0-9a-f]\\{2\\}\\)/\\1/'\`"
emit " mknod /dev/rootdev b 0x\$ROOT_MAJ 0x\$ROOT_MIN"
emit " ROOTDEV=/dev/rootdev"
emit "fi"
emit "echo Mounting root filesystem." emit "echo Mounting root filesystem."
emit "mount /sysroot" emit "mount \$ROOTDEV /sysroot"
emit "if [ \$? != 0 ]"
emit "echo Setting up other filesystems." emit "then"
emit "setuproot" emit " echo unable to mount rootfs. Dropping to shell"
emit " /bin/msh"
emit "fi"
emit "echo Switching to new root and running init." emit "echo Switching to new root and running init."
emit "switchroot" emit "exec switch_root /sysroot /sbin/init"
chmod +x $RCFILE chmod +x $RCFILE