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sirdilznik
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Joined: 28 Apr 2005
Posts: 731

PostPosted: Mon Mar 26, 2007 5:25 pm    Post subject: Problem booting (self made) LiveCD[SOLVED] Reply with quote

I've tried posting about this in another thread, but it got buried without any responses and I don't want to pull that thread off track anymore. I made my own LiveCD and everything seems to be in order, but it won't finish booting. Here are the last few lines it outputs before it locks the system up:
Code:
>> Activating mdev
>> Making tmpfs for /newroot
>> Mediafound on /dev/iseries/vcd*
>> Determining root device
>> Determining looptype
!! Invalid loop location: /livecd.squashfs
!! Please export LOOP with a valid location, or reboot and pass a proper loop=

I've searched theses forums and google and tried various things people did to resolve their problems. It seems that this kind of problem has been encountered many, many times before, but none of the "solutions" made any difference for me. I'm starting to think that maybe my CD is fine (and the several coasters I've burned before earlier) and that the issue may be BIOS related or related to the fact that I have a SATA hard drive. Any thoughts. Is there more info. I could post? Is /dev/iseries/vcd* a valid location?


Last edited by sirdilznik on Sat Mar 31, 2007 4:41 pm; edited 1 time in total
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nativemad
Developer
Developer


Joined: 30 Aug 2004
Posts: 839
Location: Switzerland

PostPosted: Tue Mar 27, 2007 6:56 pm    Post subject: Reply with quote

Hi

i had this several times with different scenarions... Don't worry, if the Kernel get loaded, you're on the right track and the bios seems fine! :D

1. Check that the file livecd.squashfs is on the root of the CD itself. Not in a subdir or something. And really check that the root= or real_root= in the bootloader is correct.
2. Check that you have the right drivers compiled into the Kernel (ide, cd-fs, loopback-dev, squashfs etc.)
3. Check the initrd! On "slow" machines i had the issue that the usb-driver (even when compiled into the Kernel) was loaded a little bit after the mount-attempt was made if booting from usb... so i had to spice up /usr/share/genkernel/generic/initrd.scrits with a nice little sleep command! :wink:
4. sometimes you can get a little shell to check if the init of the Kernel does everything right (mount the cd manually, and see if you can even mount the squash manually) by simply adding an init=/bin/sh as boot-parameter!

As it seems, the cd-rom gets properly detected... i would say that either the squashfs isn't compiled into the kernel, or the real_root or root variable from the bootloader is wrong....

I hope this will help you a bit further.... otherwise it would be helpful to know your architecture, kernel-version and if you took genkernel or something?

Btw: what kind of iseries do you drive with sata?!? ...... licking my fingers.....
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sirdilznik
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Joined: 28 Apr 2005
Posts: 731

PostPosted: Wed Mar 28, 2007 4:47 am    Post subject: Reply with quote

nativemad wrote:
Hi

i had this several times with different scenarions... Don't worry, if the Kernel get loaded, you're on the right track and the bios seems fine! :D

1. Check that the file livecd.squashfs is on the root of the CD itself. Not in a subdir or something.
Yes, it is on the root.
Quote:
And really check that the root= or real_root= in the bootloader is correct.
The root and real_root are copied verbatim from Gentoo Howto build a LiveCD from scratch
Code:
root=/dev/ram0
real_root=/dev/loop0

Quote:
2. Check that you have the right drivers compiled into the Kernel (ide, cd-fs, loopback-dev, squashfs etc.)

Yes, all those are compiled in. I tried with SATA built directly in and with SATA built as modules. No difference
Quote:
3. Check the initrd! On "slow" machines i had the issue that the usb-driver (even when compiled into the Kernel) was loaded a little bit after the mount-attempt was made if booting from usb... so i had to spice up /usr/share/genkernel/generic/initrd.scrits with a nice little sleep command! :wink:
Not sure how to do that.
Quote:
4. sometimes you can get a little shell to check if the init of the Kernel does everything right (mount the cd manually, and see if you can even mount the squash manually) by simply adding an init=/bin/sh as boot-parameter!
I will try that when I reboot.

Quote:
As it seems, the cd-rom gets properly detected... i would say that either the squashfs isn't compiled into the kernel, or the real_root or root variable from the bootloader is wrong....

I hope this will help you a bit further.... otherwise it would be helpful to know your architecture, kernel-version and if you took genkernel or something?
amd64 2.6.21-rc4-mm1 (patched with squashfs) I did make all;make modules_install;make install (then renamed things to comply with /boot/grub/menu.lst);genkernel initrd. As for the specs of the system i built this on click my sig.

Quote:
Btw: what kind of iseries do you drive with sata?!? ...... licking my fingers.....
I'm not sure what you mean :oops: My motherboard is a nvidia nForce4-4x and the SATA controller is a nvidia nForce4-4x controller.

Thanks for taking the time to answer my query. Your help is much appreciated.
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nativemad
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Joined: 30 Aug 2004
Posts: 839
Location: Switzerland

PostPosted: Wed Mar 28, 2007 4:18 pm    Post subject: Reply with quote

Can you mount the squashfs in your (normal booted) system (or chroot)?
mount -t squashfs -o loop /path/to/livecd.squashfs /somewhere/else

Anything (almost a bit) in dependence to access the CDROM should be IN The Kernel, not as Module.... Perhaps you have to mount the squash from the CD and have a look with lsmod which modules have been loaded...

The root= and real_root= seems to be good... also make shure that the loop=/livecd.squashfs is in place!

If you get the tiny shell via init=/bin/sh, you should probably check that real_root=/dev/loop0 is correct! simply type losetup -a and if you see that you got more than one loop mounted, than this would probably mean that you have to do it like real_root=/dev/loop1 or something.

Genkernel is very easy to understand and edit.... If you know a bit bash, simply edit /usr/share/genkernel/generic/initrd.scrits or /usr/share/genkernel/linuxrc according to your needs.... As example you could open /bin/sh when the cdrom gets detected, just before the squash should get mounted... :wink:

I was just very confused about ">> Mediafound on /dev/iseries/vcd* "! Is your cdrom at /dev/iseries/vcd*?!?!?!?!?!? -I thougt perhaps you got one of those very nice IBM-Mainframes because of iseries.... but amd64 is also cool! :lol:
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sirdilznik
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Joined: 28 Apr 2005
Posts: 731

PostPosted: Wed Mar 28, 2007 5:11 pm    Post subject: Reply with quote

nativemad wrote:
Can you mount the squashfs in your (normal booted) system (or chroot)?
mount -t squashfs -o loop /path/to/livecd.squashfs /somewhere/else

No because the kernel I'm currently running (not the one on the CD) doesn't have the squashfs support option enabled. Is this part of the problem?

Quote:
Anything (almost a bit) in dependence to access the CDROM should be IN The Kernel, not as Module.... Perhaps you have to mount the squash from the CD and have a look with lsmod which modules have been loaded...

The root= and real_root= seems to be good... also make shure that the loop=/livecd.squashfs is in place!

If you get the tiny shell via init=/bin/sh, you should probably check that real_root=/dev/loop0 is correct! simply type losetup -a and if you see that you got more than one loop mounted, than this would probably mean that you have to do it like real_root=/dev/loop1 or something.
adding init/bin/sh to the kernel line makes no change. I tried real_root=/dev/loop1 and loop2. No difference

Quote:
Genkernel is very easy to understand and edit.... If you know a bit bash, simply edit /usr/share/genkernel/generic/initrd.scrits or /usr/share/genkernel/linuxrc according to your needs.... As example you could open /bin/sh when the cdrom gets detected, just before the squash should get mounted... :wink:
Not easy enough for me to completely understand. Would I put
Code:
/bin/sh
just before
Code:
check_loop() {
   if [ "${LOOP}" = '' -o ! -e "mnt/cdrom/${LOOP}" ]
   then
   
      bad_msg "Invalid loop location: ${LOOP}"
      bad_msg 'Please export LOOP with a valid location, or reboot and pass a proper loop=...'
      bad_msg 'kernel command line!'
   
      run_shell
   fi
}
? (I'm tired of burning coasters :lol: )

Quote:
I was just very confused about ">> Mediafound on /dev/iseries/vcd* "! Is your cdrom at /dev/iseries/vcd*?!?!?!?!?!? -I thougt perhaps you got one of those very nice IBM-Mainframes because of iseries.... but amd64 is also cool! :lol:
My noobishness in this area really shows. I'm a LiveCD virgin. Anyway here is my /usr/share/genkernel/generic/initrd.scripts:
Code:
 #!/bin/ash

. /etc/initrd.defaults

backup() {
   echo -ne "\033[0G\033[0K"
}

strlen() {
   if [ -z "$1" ]
   then
      echo "usage: strlen <variable_name>"
      die
   fi
   eval echo "\${#${1}}"
}

parse_opt() {
   case "$1" in
      *\=*)
         local key_name="`echo "$1" | cut -f1 -d=`"
         local key_len=`strlen key_name`
         local value_start=$((key_len+2))
         echo "$1" | cut -c ${value_start}-
      ;;
   esac
}

modules_load() {
   for module in $*
   do
      echo ${module} >> /etc/modules/extra_load
   done

   modules_scan extra_load
}

modules_scan() {
   local MODS
   [ -d /etc/modules/${1} ] || touch /etc/modules/${1}

   [ -f /etc/modules/${1} ] && MODS=`cat /etc/modules/${1}`
   for x in ${MODS}
   do
      MLOAD=`echo ${MLIST} | sed -e "s/.*${x}.*/${x}/"`
      if [ "${MLIST}" = "${x}" ] # Only module to no-load
      then
         echo -e "${BOLD}   ::${NORMAL} Skipping ${x}..."
      elif [ "${MLOAD}" = "${MLIST}" ] # == No change == No specified no-load
      then
         [ -n "${DEBUG}" ] && echo -ne "${BOLD}   ::${NORMAL} Checking for ${x}..."
         # find -name does not work since the return status is always zero
         if find /lib/modules | grep /"${x}${KSUFF}" >/dev/null 2>&1
         then
            echo -ne "${BOLD}   ::${NORMAL} Scanning for ${x}..."
            modprobe ${x} -n
            backup
            echo -ne "${NORMAL}"
         fi
      else
         echo -e "${BOLD}   ::${NORMAL} Skipping ${x}..."
      fi
   done
}

findcdmount() {
   if [ "$#" -gt "0" ]
   then
      for x in $*
      do
         # Check for a block device to mount
         if [ -b "${x}" ]
         then
            good_msg "Attempting to mount media:- ${x}"
            if [ -z "${CDROOT_DEV}" ]
            then
               mount -r -t auto ${x} ${NEW_ROOT}/mnt/cdrom \
                  > /dev/null 2>&1
            else
               mount -r -t iso9660 ${x} ${NEW_ROOT}/mnt/cdrom \
                  > /dev/null 2>&1
            fi
            if [ "$?" = '0' ]
            then
               # Check for a LiveCD
               if [ -e ${NEW_ROOT}/mnt/cdrom/${SUBDIR}/livecd ]
               then
                  REAL_ROOT="${x}"
                  break
               else
                  umount ${NEW_ROOT}/mnt/cdrom
               fi
            fi
         fi
      done
      if [ "${REAL_ROOT}" != '' ]
      then
         good_msg "Media found on ${x}"
      fi
   fi
}

cache_cd_contents() {
   # Check loop file exists and cache to ramdisk if DO_cache is enabled
   if [ "${LOOPTYPE}" != "noloop" ] && [ "${LOOPTYPE}" != "sgimips" ]
   then
      check_loop
      if [ "${DO_cache}" ]
      then
         # TODO: Check the size of the image versus the size of our tmpfs
         # along with the amount of available RAM and increase tmpfs size
         # if necessary. (Not having awk sucks...)
         # z=0
         # for i in $(cat /proc/meminfo | grep -e ^MemFree -e ^Cached | \
         # cut -d: -f2 | cut -dk -f1 | sed -e "s/^\s*//") ; do
         # z=$(($z + $i)) ; done
         # echo $z
         good_msg "Copying loop file for caching..."
         cp -a ${NEW_ROOT}/mnt/cdrom/${LOOP} ${NEW_ROOT}/mnt/${LOOP}
         if [ $? -ne 0 ]
         then
            bad_msg "Failed to cache the loop file! Lack of space?"
            rm -rf ${NEW_ROOT}/mnt/livecd.* 2>/dev/null
            rm -rf ${NEW_ROOT}/mnt/zisofs 2>/dev/null
         else
            LOOPEXT='../'
         fi
      fi
   fi
}

mount_sysfs() {
   if [ "${KV_2_6_OR_GREATER}" ]
   then
      # Udev is semi-broken on non /sys sysfs mount points.
      mount -t sysfs /sys /sys >/dev/null 2>&1
      ret=$?
   
      # sysfs mount failed .. udev wont work fall back to devfs if available
      [ "$ret" -eq '0' ] || USE_UDEV_NORMAL=0
   fi
}

# Insert a directory tree $2 to an union specified by $1
# Top-level read-write branch is specified by it's index 0
# $1 = union absolute path (starting with /)
# $2 = path to data directory
#
union_insert_dir() {
   # detect branch 0 because newer unionfs doesn't support "0,1,2"
   BRANCH_0="/"$(/sbin/unionctl $1 --list | cut -d/ -f2- | cut -d'(' -f1)
   /sbin/unionctl $1 --add --after $BRANCH_0 --mode ro $2
   if [ $? = '0' ]
   then
      good_msg "Addition of $2 to $1 after branch $BRANCH_0 successful"
   fi
}

findnfsmount() {

   if [ "${IP}" != '' ] || busybox udhcpc -R rootpath -n -s /bin/udhcpc.scripts
   then
      [ -e /rootpath ] && NFSROOT=`cat /rootpath`

      if [ "${NFSROOT}" = '' ]
      then
         # Obtain NFSIP   
         OPTIONS=`busybox dmesg | grep rootserver | sed -e "s/,/ /g"`
         for OPTION in $OPTIONS
         do
            if [ `echo $OPTION | sed -e "s/=/ /g" | cut -d " " -f 1` = 'rootserver' ]
            then
               NFSIP=`echo $OPTION | sed -e "s/=/ /g" | cut -d " " -f 2`
            fi
         done
         
         # Obtain NFSPATH
         OPTIONS=`busybox dmesg | grep rootpath | sed -e "s/,/ /g"`   
         for OPTION in $OPTIONS
         do
            if [ `echo $OPTION | sed -e "s/=/ /g" | cut -d " " -f 1` = 'rootpath' ]
            then
               NFSPATH=`echo $OPTION | sed -e "s/=/ /g" | cut -d " " -f 2`
             fi
         done

         # Setup NFSROOT
         if [ "${NFSIP}" != '' ] && [ "$NFSPATH" != '' ]
         then
            NFSROOT="${NFSIP}:${NFSPATH}"
         else
            bad_msg "The DHCP Server did not send a valid root-path."
            bad_msg "Please check your DHCP setup, or provide a nfsroot=<...> parameter."
         fi
      fi

      if [ "${NFSROOT}" != '' ]
      then
         if [ "${CDROOT}" != '0' ]
         then
            good_msg "Attempting to mount NFS CD image on ${NFSROOT}"
            mount -t nfs -o ro,nolock,rsize=1024,wsize=1024 ${NFSROOT} ${NEW_ROOT}/mnt/cdrom
            if [ "$?" = '0' ]
            then
               REAL_ROOT="/dev/nfs"
            else
               bad_msg "NFS Mounting failed. Is the path corrent ?"
            fi
         else   
            good_msg "Attemping to mount NFS root on ${NFSROOT}"
            mount -t nfs -o ro,nolock,rsize=1024,wsize=1024 ${NFSROOT} ${NEW_ROOT}
            if [ "$?" = '0' ]
            then
               REAL_ROOT="/dev/nfs"
            else
               bad_msg "NFS Mounting failed. Is the path correct ?"
            fi
            # FIXME: Need to start portmap and the other rpc daemons in order to
            # FIXME: remount rw.
         fi

      fi
   fi
}

kill_devfsd() {
   killall devfsd > /dev/null 2>&1
}

check_loop() {
   if [ "${LOOP}" = '' -o ! -e "mnt/cdrom/${LOOP}" ]
   then
   
      bad_msg "Invalid loop location: ${LOOP}"
      bad_msg 'Please export LOOP with a valid location, or reboot and pass a proper loop=...'
      bad_msg 'kernel command line!'
   
      run_shell
   fi
}

run_shell() {
   /bin/ash
}

runUdev() {
   mount -t tmpfs -o size=100k udev /dev
   mkdir /dev/pts
   mkdir /dev/shm
   echo  > /proc/sys/kernel/hotplug
   /sbin/udevd --daemon
   mkdir -p /dev/.udev/queue
   /sbin/udevtrigger

   good_msg 'Letting udev process events'
   loop=0
   while test -d /dev/.udev/queue; do
      sleep 1;
      test "$loop" -gt 30 && break
      loop=$(($loop + 1))
   done
   good_msg "Udev finished proccsing after $loop iterations"

   killall udevd > /dev/null 2>&1
   ln -snf /proc/self/fd /dev/fd
   ln -snf /proc/self/fd/0 /dev/stdin
   ln -snf /proc/self/fd/1 /dev/stdout
   ln -snf /proc/self/fd/2 /dev/stderr
   ln -snf /proc/kcore /dev/core
}

runmdev() {
   # busybox udev replacement
   mdev -s

   # catch udev hotplug events
   echo /sbin/mdev > /proc/sys/kernel/hotplug
}

test_success() {
   error_string=$1
   error_string="${error_string:-run command}"
   # If last command failed send error message and fall back to a shell   
   if [ "$?" != '0' ]
   then
      splash 'verbose'
      bad_msg 'Failed to $1; failing back to the shell...'
      run_shell
   fi
}

good_msg() {
   msg_string=$1
   msg_string="${msg_string:-...}"
   echo -e "${GOOD}>>${NORMAL}${BOLD} ${msg_string} ${NORMAL}"
}

bad_msg() {
   msg_string=$1
   msg_string="${msg_string:-...}"
   echo -e "${BAD}!!${NORMAL}${BOLD} ${msg_string} ${NORMAL}"
}

warn_msg() {
   msg_string=$1
   msg_string="${msg_string:-...}"
   echo -e "${WARN}**${NORMAL}${BOLD} ${msg_string} ${NORMAL}"
}

bind_mount_dev() {
   # bind-mount /dev/ so that loop devices can be found
   mount -o bind ${NEW_ROOT}/dev /dev
}

start_dev_mgr() {
   # Check udev is available...
   if [ "${KV_2_6_OR_GREATER}" -a ! "${USE_UDEV_NORMAL}" -eq '0' ]
   then
      USE_UDEV_NORMAL=1
   else
      USE_UDEV_NORMAL=0
   fi

   if [ "${USE_UDEV_NORMAL}" -eq '1' ]
   then
      for dir in /sys/bus/usb/drivers/usb-storage/*
      do
         if [ -d "${dir}" ]
         then
            FORCE_slowusb="1"
         fi
      done
      if [ "${DO_slowusb}" ] || [ "${FORCE_slowusb}" ]
      then
         sleep 10
      fi

      kill_devfsd
      good_msg 'Activating mdev'
      runmdev

      if [ "${DO_slowusb}" ] || [ "${FORCE_slowusb}" ]
      then
         sleep 10
      fi
   else
      good_msg 'Activating devfs'
      mount -t devfs devfs /dev 2>/dev/null
      devfsd /dev -np
   fi
}

bootstrapCD() {
   # Locate the cdrom device with our media on it.
   # CDROM DEVICES
   DEVICES="/dev/cdroms/* /dev/ide/cd/* /dev/sr*"
   # USB Keychain/Storage
   DEVICES="$DEVICES /dev/sd*"
   # IDE devices
   DEVICES="$DEVICES /dev/hd*"
   # USB using the USB Block Driver
   DEVICES="$DEVICES /dev/ubd* /dev/ubd/*"
   # iSeries devices
   DEVICES="$DEVICES /dev/iseries/vcd*"
   # The device was specified on the command line.  Shold we even be doing a
   # scan at this point?  I think not.
   [ -n "${CDROOT_DEV}" ] && DEVICES="$DEVICES ${CDROOT_DEV}"

   findcdmount $DEVICES
}

cmdline_hwopts() {
   # Scan CMDLINE for any "doscsi" or "noscsi"-type arguments
   
   local FOUND
   local TMP_HWOPTS

   for x in $HWOPTS
   do
      for y in $CMDLINE
      do
         if [ "${y}" = "do${x}" ]
         then
            MY_HWOPTS="${MY_HWOPTS} $x"
         elif [ "${y}" = "no${x}" ]
         then
            MY_HWOPTS="`echo ${MY_HWOPTS} | sed -e \"s/${x}//g\" -`"
         fi
      done
   done
   
   # Shouldnt need to sort this as the following loop should figure out the
   # duplicates and strip them out
   #MY_HWOPTS=`echo ${MY_HWOPTS}|  sort`
   
   for x in ${MY_HWOPTS}
   do
      FOUND=0
      for y in ${TMP_HWOPTS}
      do
         if [ "${y}" = "${x}" ]
         then
            FOUND=1
         fi
      done
      if [ ! "${FOUND}" = '1' ]
      then
         TMP_HWOPTS="${TMP_HWOPTS} ${x}"
      fi
   done

   MY_HWOPTS=${TMP_HWOPTS}
}

load_modules() {
   # Load modules listed in MY_HWOPTS if /lib/modules exists
   
   if [ -d '/lib/modules' ]
   then
      good_msg 'Loading modules'
      # Load appropriate kernel modules
      for modules in $MY_HWOPTS
      do
         modules_scan $modules
         eval DO_`echo $modules | sed 's/-//'`=1
      done
   else
      good_msg 'Skipping module load; no modules in the initrd!'
   fi
}

detect_sbp2_devices() {
   # http://www.linux1394.org/sbp2.php
   
   # /proc
   # /proc/scsi/sbp2/0, /proc/scsi/sbp2/1, etc.
   #
   # You may manually add/remove SBP-2 devices via the procfs with:
   # add-single-device <h> <b> <t> <l> or remove-single-device <h> <b> <t> <l>,
   # where:
   #
   # <h> = host (starting at zero for first SCSI adapter)
   # <b> = bus (normally zero)
   # <t> = target (starting at zero for first SBP-2 device)
   # <l> - lun (normally zero)
   # e.g. To manually add/detect a new SBP-2 device
   # echo "scsi add-single-device 0 0 0 0" > /proc/scsi/scsi
   # e.g. To manually remove a SBP-2 device after it's been unplugged
   # echo "scsi remove-single-device 0 0 0 0" > /proc/scsi/scsi
   # e.g. To check to see which SBP-2/SCSI devices are currently registered
   # cat /proc/scsi/scsi

   [ -e /proc/scsi/scsi ] && echo 'scsi add-single-device 0 0 0 0' > /proc/scsi/scsi
}

setup_keymap() {
   if [ "${DO_keymap}" ]
   then
      if [ ! -e /dev/vc/0 -a ! -e /dev/tty0 ]
      then
         DEVBIND=1
         mount -o bind ${NEW_ROOT}/dev /dev
      fi
      [ ! -e /dev/tty0 ] && ln -s /dev/tty1 /dev/tty0

      chooseKeymap

      [ "${DEVBIND}" -eq '1' ] && umount /dev
      
      if [ -e /etc/sysconfig/keyboard -a "${CDROOT}" -eq '1' ]
      then
         mkdir -p ${NEW_ROOT}/etc/sysconfig/
         cp /etc/sysconfig/keyboard ${NEW_ROOT}/etc/sysconfig/keyboard
      fi
   fi
}

chooseKeymap() {
   good_msg "Loading keymaps"
   cat /lib/keymaps/keymapList
   read -t 10 -p '<< Load keymap (Enter for default): ' keymap
   case ${keymap} in
      1|azerty) keymap=azerty ;;
      2|be) keymap=be ;;
      3|bg) keymap=bg ;;
      4|br-a) keymap=br-a ;;
      5|br-l) keymap=br-l ;;
      6|by) keymap=by ;;
      7|cf) keymap=cf ;;
      8|croat) keymap=croat ;;
      9|cz) keymap=cz ;;
      10|de) keymap=de ;;
      11|dk) keymap=dk ;;
      12|dvorak) keymap=dvorak ;;
      13|es) keymap=es ;;
      14|et) keymap=et ;;
      15|fi) keymap=fi ;;
      16|fr) keymap=fr ;;
      17|gr) keymap=gr ;;
      18|hu) keymap=hu ;;
      19|il) keymap=il ;;
      20|is) keymap=is ;;
      21|it) keymap=it ;;
      22|jp) keymap=jp ;;
      23|la) keymap=la ;;
      24|lt) keymap=lt ;;
      25|mk) keymap=mk ;;
      26|nl) keymap=nl ;;
      27|no) keymap=no ;;
      28|pl) keymap=pl ;;
      29|pt) keymap=pt ;;
      30|ro) keymap=ro ;;
      31|ru) keymap=ru ;;
      32|se) keymap=se ;;
      33|sg) keymap=sg ;;
      34|sk-y) keymap=sk-y ;;
      35|sk-z) keymap=sk-z ;;
      36|slovene) keymap=slovene ;;
      37|trf) keymap=trf ;;
      38|trq) keymap=trq ;;
      39|ua) keymap=ua ;;
      40|uk) keymap=uk ;;
      41|us) keymap=us ;;
      42|wangbe) keymap=wangbe ;;
   esac
   if [ -e /lib/keymaps/${keymap}.map ]
   then
      good_msg "Loading the ''${keymap}'' keymap"
      loadkmap < /lib/keymaps/${keymap}.map
#      xkeymap=${keymap}
#      echo ${keymap} | egrep -e "[0-9]+" >/dev/null 2>&1
#      if [ "$?" -eq '0'  ]
#      then
#         xkeymap=`tail -n 7 /lib/keymaps/keymapList | grep ${keymap} | sed -r "s/.*\s+${keymap}\s+([a-z-]+).*/\1/g" | egrep -v 1`
#      fi
      mkdir -p /etc/sysconfig
#      echo "XKEYBOARD=${xkeymap}" > /etc/sysconfig/keyboard
      echo "XKEYBOARD=${keymap}" > /etc/sysconfig/keyboard
   elif [ "$keymap" = '' ]
   then
      echo
      good_msg "Keeping default keymap"
   else
      bad_msg "Sorry, but keymap ''${keymap}'' is invalid!"
      chooseKeymap
   fi
}

startVolumes() {
   #good_msg 'Checking if volumes need to be started...'

   # Here, we check for /dev/device-mapper, and if it exists, we setup a
   # a symlink, which should hopefully fix bug #142775 and bug #147015
   if [ -e /dev/device-mapper ] && [ ! -e /dev/mapper/control ]
   then
      mkdir -p /dev/mapper
      ln -sf /dev/device-mapper /dev/mapper/control
   fi
   
   if [ "${USE_DMRAID_NORMAL}" -eq '1' ]
   then
      if [ -e '/sbin/dmraid' ]
      then
         good_msg "Activating Device-Mapper RAID(s)"
         if [ '${DMRAID_OPTS}' = '' ]
         then
            /sbin/dmraid -ay
         else
            /sbin/dmraid -ay ${DMRAID_OPTS}
         fi
      fi
   fi

   if [ "${USE_LVM2_NORMAL}" -eq '1' ]
   then
      if [ -e '/bin/vgscan' -a -e '/bin/vgchange' ]
      then
         for dev in ${RAID_DEVICES}
         do
            setup_md_device "${dev}"
         done

         good_msg "Scanning for Volume Groups"
         /bin/vgscan --ignorelockingfailure --mknodes 2>/dev/null
         good_msg "Activating Volume Groups"
         /bin/vgchange -ay --ignorelockingfailure 2>/dev/null

         # Disable EVMS since lvm2 is activated and they dont work together.
         if [ "${USE_EVMS2_NORMAL}" -eq '1' ]
         then
            bad_msg "Disabling EVMS Support because LVM2 started"
            bad_msg "Do not add dolvm2 to the cmdline if this is not what you want"
            bad_msg "LVM2 and EVMS do not work well together"
            USE_EVMS2_NORMAL=0
         fi
      else
         bad_msg "vgscan or vgchange not found: skipping LVM2 volume group activation!"
      fi
   fi

   if [ "${USE_EVMS2_NORMAL}" -eq '1' ]
   then
      if [ -e '/sbin/evms_activate' ]
      then
         good_msg "Activating EVMS"
         evms_activate
      fi
   fi
}

# Open a LUKS device
# $1 LUKS device
# $2 LUKS name
openLUKS() {
   LUKS_DEVICE="$1"
   LUKS_NAME="$2"
   if [ -e /sbin/cryptsetup ]
   then
      while [ 1 ]
      do
         if [ "${LUKS_DEVICE}" = '' ]
         then
            # LUKS device could not be opened. Prompt user for device.
            bad_msg "The LUKS ${LUKS_NAME} block device is not detected."
            echo "   Please specify a ${LUKS_NAME} LUKS device to open, "q" to skip, or "shell" for a shell..."
            echo -n "LUKS ${LUKS_NAME}() :: "
            read LUKS_DEVICE
            continue
         elif [ "${LUKS_DEVICE}" = 'shell' ]
         then
            run_shell
            
            LUKS_DEVICE=''
            continue
         elif [ "${LUKS_DEVICE}" = 'q' ]
         then
            break
         else
            if cryptsetup isLuks ${LUKS_DEVICE}
            then
               good_msg "Opening LUKS device ${LUKS_DEVICE}"
               
               cryptsetup luksOpen ${LUKS_DEVICE} ${LUKS_NAME}
               if [ ! "$?" -eq '0' ]
               then
                  bad_msg "Failed open LUKS device ${LUKS_DEVICE}"
               else
                  break
               fi
            else
               bad_msg "The LUKS device ${LUKS_DEVICE} does not contain a LUKS header"
            fi
         fi
         LUKS_DEVICE=''
      done
   else
      bad_msg "The initrd does not support LUKS"
   fi
}

startLUKS() {
   if [ -n "${LUKS_ROOT}" ]
   then
      openLUKS "${LUKS_ROOT}" "root"
      if [ -n "${REAL_ROOT}" ]
      then
         # Rescan volumes
         startVolumes
      else
         REAL_ROOT="/dev/mapper/root"
      fi
   fi
   if [ -n "${LUKS_SWAP}" ]
   then
      openLUKS "${LUKS_SWAP}" "swap"
      break
   fi
}

sdelay() {
   # Sleep a specific number of seconds if SDELAY is set otherwise only sleep
   # 1 second
   if [ -n "${SDELAY}" ]
   then
      sleep ${SDELAY}
   else
      sleep 1
   fi
}

quiet_kmsg() {
   # if QUIET is set make the kernel less chatty
   [ -n "$QUIET" ] && echo '0' > /proc/sys/kernel/printk
}

verbose_kmsg() {
   # if QUIET is set make the kernel less chatty
   [ -n "$QUIET" ] && echo '6' > /proc/sys/kernel/printk
}


cdupdate() {
   if [ "${CDROOT}" -eq '1' ]
   then
      if [ -x /${NEW_ROOT}/mnt/cdrom/cdupdate.sh ]
      then
         good_msg "Running cdupdate.sh"
         ${NEW_ROOT}/mnt/cdrom/cdupdate.sh
         if [ "$?" != '0' ]
         then
            splash 'verbose'
            bad_msg "Executing cdupdate.sh failed!"
            run_shell
         fi
      else
         good_msg 'No cdupdate.sh script found, skipping...'
      fi
   fi
}

setup_md_device() {
   local device

   [ -z "$1" ] && device="${REAL_ROOT}" || device="$1"
   [ -z "${device}" ] && return # LiveCD

   if [ `echo ${device}|sed -e 's#\(luks:\)\?\(/dev/md\)[[:digit:]]\+#\2#'` = "/dev/md" ]
   then
      good_msg 'Detected real_root as a md device. Setting up the device node...'
      MD_NUMBER=`echo ${device}|sed -e 's#\(luks:\)\?/dev/md\([[:digit:]]\+\)#\2#'`
      if [ ! -e /dev/md${MD_NUMBER} ]
      then
         mknod /dev/md${MD_NUMBER} b 9 ${MD_NUMBER} >/dev/null 2>&1
         [ "$?" -ne 0 ] && bad_msg "Creation of /dev/md${MD_NUMBER} failed..."
      fi
      mdstart ${MDPART} /dev/md${MD_NUMBER}
   fi
}

rundebugshell() {
   if [ -n "$DEBUG" ]
   then
      good_msg 'Starting debug shell as requested by "debug" option.'
      good_msg 'Type "exit" to continue with normal bootup.'
      [ -x /bin/sh ] && /bin/sh || /bin/ash
   fi
}

setup_unionfs() {
   if [ "${USE_UNIONFS_NORMAL}" -eq '1' ]
   then
      # Directory used for rw changes in union mount filesystem
      UNION=/union
      MEMORY=/memory
      if [ -z "$UID" ]
      then
         CHANGES=$MEMORY/unionfs_changes/default
      else
         CHANGES=$MEMORY/unionfs_changes/$UID
      fi

      mkdir -p ${MEMORY}
      mkdir -p ${UNION}
      good_msg "Loading unionfs module"
      modprobe unionfs > /dev/null 2>&1
      if [ -n "${UNIONFS}" ]
      then
         CHANGESDEV=${UNIONFS}
         good_msg "mounting $CHANGESDEV to $MEMORY for unionfs support"
         mount -t auto $CHANGESDEV $MEMORY
         # mount tmpfs only in the case when changes= boot parameter was
         # empty or we were not able to mount the storage device
         ret=$?
         if [ "${ret}" -ne 0 ]
         then
            bad_msg "mount of $CHANGESDEV failed falling back to ramdisk based unionfs"
            mount -t tmpfs tmpfs $MEMORY
         fi
         if [ "${CDROOT}" -eq '1' -a ! -f ${MEMORY}/livecd.unionfs  ]
         then
            umount $MEMORY
            bad_msg "failed to find livecd.unionfs file on $CHANGESDEV"
            bad_msg "create a livecd.unionfs file on this device if you wish to use it for unionfs"
            bad_msg "falling back to ramdisk based unionfs for safety"
            mount -t tmpfs tmpfs $MEMORY
         fi
      else
         good_msg "Mounting ramdisk to $MEMORY for unionfs support..."
         mount -t tmpfs tmpfs $MEMORY
      fi

      mkdir -p $CHANGES
      mount -t unionfs -o dirs=$CHANGES=rw unionfs ${UNION}
      ret=$?
      if [ "${ret}" -ne 0 ]
      then
         bad_msg "Can't setup union ${UNION} in directory!"
         USE_UNIONFS_NORMAL=0
      fi
   else
      USE_UNIONFS_NORMAL=0
   fi
}

suspend_resume() {
   [ -x /sbin/resume ] || return 0
   /sbin/resume
   local ret=$?

   if [ "${ret}" -eq 0 ]; then
      exit 0
   fi

   return 0
}

suspend2_resume() {
   if [ -d /proc/suspend2 ] || [ -d /sys/power/suspend2 ]; then
      local splash_theme

      if grep "splash=" /proc/cmdline > /dev/null 2>&1; then
         splash_theme=`cat /proc/cmdline | sed 's/.*splash=/splash=/' | sed 's/ .*//' | sed 's/.*theme://' | sed 's/,.*//'`
      fi

      local suspend2_userui_program="/sys/power/suspend2/user_interface/program"
      local suspend2_do_resume="/sys/power/suspend2/do_resume"

      #
      # Backward compatibility
      #
      if [ -e /proc/suspend2 ]; then
         suspend2_userui_program="/proc/suspend2/userui_program"
         suspend2_do_resume="/proc/suspend2/do_resume"
      fi

      modules_scan suspend2

      if which suspend2ui_text > /dev/null 2>&1; then
         which suspend2ui_text > "${suspend2_userui_program}"
      fi

      if [ -n "${splash_theme}" ]; then
         ln -s /etc/splash/${splash_theme} /etc/splash/suspend2

         if which suspend2ui_fbsplash > /dev/null 2>&1; then
            which suspend2ui_fbsplash > "${suspend2_userui_program}"
         fi
      fi

      echo > "${suspend2_do_resume}"
   fi
}

And /usr/share/genkernel/generic/linuxrc:
Code:
#!/bin/sh
# Copyright 2003-2006 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

. /etc/initrd.defaults
. /etc/initrd.scripts

splash() {
   return 0
}

[ -e /etc/initrd.splash ] && . /etc/initrd.splash

# Clean input/output
exec >${CONSOLE} <${CONSOLE} 2>&1

if [ "$$" != '1' ]
then
   echo '/linuxrc has to be run as the init process as the one'
   echo 'with a PID of 1. Try adding init="/linuxrc" to the'
   echo 'kernel command line or running "exec /linuxrc".'
   exit 1
fi

mount -t proc proc /proc >/dev/null 2>&1
mount -o remount,rw / >/dev/null 2>&1

# Set up symlinks
if [ "$0" = '/init' ]
then
   /bin/busybox --install -s

   [ -e /linuxrc ] && rm /linuxrc
   
   if [ -e /bin/lvm ]
   then
      ln -s /bin/lvm /bin/vgscan
      ln -s /bin/lvm /bin/vgchange
   fi
fi

quiet_kmsg

CMDLINE="`cat /proc/cmdline`"
# Scan CMDLINE for any specified real_root= or cdroot arguments
REAL_ROOT=''
FAKE_ROOT=''
REAL_ROOTFLAGS=''
for x in ${CMDLINE}
do
   case "${x}" in
      real_root\=*)
         REAL_ROOT=`parse_opt "${x}"`
      ;;
      root\=*)
         FAKE_ROOT=`parse_opt "${x}"`
      ;;
      subdir\=*)
         SUBDIR=`parse_opt "${x}"`
      ;;
      real_init\=*)
         REAL_INIT=`parse_opt "${x}"`
      ;;
      init_opts\=*)
         INIT_OPTS=`parse_opt "${x}"`
      ;;
      # Livecd options
      cdroot)
         CDROOT=1
      ;;
      cdroot\=*)
         CDROOT=1
         CDROOT_DEV=`parse_opt "${x}"`
      ;;
      # Start livecd loop and looptype options
      loop\=*)
         LOOP=`parse_opt "${x}"`
      ;;
      looptype\=*)
         LOOPTYPE=`parse_opt "${x}"`
      ;;
      # Start Device Manager options
      devfs)
         USE_DEVFS_NORMAL=1
         USE_UDEV_NORMAL=0
      ;;
      udev)
         USE_DEVFS_NORMAL=0
         USE_UDEV_NORMAL=1
      ;;
      unionfs)
         if [ ! -x /sbin/unionctl ]
         then
            USE_UNIONFS_NORMAL=0
            bad_msg 'Unionctl not found: aborting use of unionfs!'
         else
            USE_UNIONFS_NORMAL=1
         fi
      ;;
      unionfs\=*)
         if [ ! -x /sbin/unionctl ]
         then
            USE_UNIONFS_NORMAL=0
            bad_msg 'Unionctl not found: aborting use of unionfs!'
         else
            USE_UNIONFS_NORMAL=1
            CMD_UNIONFS=`parse_opt "${x}"`
            echo ${CMD_UNIONFS}|grep , >/dev/null 2>&1
            if [ "$?" -eq '0' ]
            then
               UID=`echo ${CMD_UNIONFS#*,}`
               UNIONFS=`echo ${CMD_UNIONFS%,*}`
            else
               UNIONFS=${CMD_UNIONFS}
            fi
         fi
      ;;
      # Start Volume manager options
      dolvm2)
         USE_LVM2_NORMAL=1
      ;;
      dodmraid)
         USE_DMRAID_NORMAL=1
      ;;
      dodmraid\=*)
         DMRAID_OPTS=`parse_opt "${x}"`
         USE_DMRAID_NORMAL=1
      ;;
      doevms2)
         USE_EVMS2_NORMAL=1
      ;;
      # Debug Options
      debug)
         DEBUG='yes'
      ;;
       # Scan delay options
      scandelay\=*)
         SDELAY=`parse_opt "${x}"`
      ;;
      scandelay)
         SDELAY=10
      ;;
      # Module no-loads
      doload\=*)
         MDOLIST=`parse_opt "${x}"`
         MDOLIST="`echo ${MDOLIST} | sed -e \"s/,/ /g\"`"
      ;;
      nodetect)
         NODETECT=1
      ;;
      noload\=*)
         MLIST=`parse_opt "${x}"`
         MLIST="`echo ${MLIST} | sed -e \"s/,/ /g\"`"
         export MLIST
      ;;
      # Redirect output to a specific tty
      CONSOLE\=*)
         CONSOLE=`parse_opt "${x}"`
         exec >${CONSOLE} <${CONSOLE} 2>&1
      ;;
      # /dev/md
      lvmraid\=*)
         RAID_DEVICES="`parse_opt ${x}`"
         RAID_DEVICES="`echo ${RAID_DEVICES} | sed -e 's/,/ /g'`"
      ;;
      part\=*)
         MDPART=`parse_opt "${x}"`
      ;;
      # NFS
      ip\=*)
         IP=`parse_opt "${x}"`
      ;;
      nfsroot\=*)
         NFSROOT=`parse_opt "${x}"`
      ;;
      crypt_root\=*)
         LUKS_ROOT=`parse_opt "${x}"`
      ;;
      crypt_swap\=*)
         LUKS_SWAP=`parse_opt "${x}"`
      ;;
      real_rootflags\=*)
         REAL_ROOTFLAGS=`parse_opt "${x}"`
      ;;
   esac
done

if [ -z "${REAL_ROOT}" -a \( "${CDROOT}" -eq 0 \)  -a \( "${FAKE_ROOT}" != "/dev/ram0" \) ]
then
   REAL_ROOT="${FAKE_ROOT}"   
fi

splash 'init'

detect_sbp2_devices
cmdline_hwopts

# Load modules listed in MY_HWOPTS if /lib/modules exists
if [ -d '/lib/modules' ]
then
   good_msg 'Loading modules'
   # Load appropriate kernel modules
   if [ "${NODETECT}" -ne '1' ]
   then
      for modules in $MY_HWOPTS
      do
         modules_scan $modules
         eval DO_`echo $modules | sed 's/-//'`=1
      done
   fi
   # Always eval doload=...
   modules_load $MDOLIST
else
   for modules in $MY_HWOPTS
   do
      eval DO_`echo $modules | sed 's/-//'`=1
   done
   good_msg 'Skipping module load; no modules in the initrd!'
fi

# Mount sysfs
mount_sysfs

# Delay if needed for USB hardware
sdelay

# Start udev/devfs
start_dev_mgr

# Setup md device nodes if they dont exist
setup_md_device

# Scan volumes
startVolumes

# Initialize LUKS root device
startLUKS

# Set up unionfs
mkdir -p ${NEW_ROOT}
setup_unionfs

if [ "${USE_UNIONFS_NORMAL}" -eq '1' ]
then
   CHROOT=${UNION}
else
   CHROOT=${NEW_ROOT}
fi

# Run debug shell if requested
rundebugshell

suspend_resume
suspend2_resume

if [ "${CDROOT}" -eq '1' ]
then
   if [ ! "${USE_UNIONFS_NORMAL}" -eq '1' ]
   then
      good_msg "Making tmpfs for ${NEW_ROOT}"
      mount -t tmpfs tmpfs ${NEW_ROOT}
   fi
   
   for i in dev mnt mnt/cdrom mnt/livecd tmp tmp/.initrd mnt/gentoo sys
   do
      mkdir -p ${NEW_ROOT}/$i
      chmod 755 ${NEW_ROOT}/$i
   done
   [ ! -e ${NEW_ROOT}/dev/null ] && mknod ${NEW_ROOT}/dev/null c 1 3
   [ ! -e ${NEW_ROOT}/dev/console ] && mknod ${NEW_ROOT}/dev/console c 5 1

   # For SGI LiveCDs ...
   if [ "${LOOPTYPE}" = "sgimips" ]
   then
      [ ! -e ${NEW_ROOT}/dev/sr0 ] && mknod ${NEW_ROOT}/dev/sr0 b 11 0
      [ ! -e ${NEW_ROOT}/dev/loop0 ] && mknod ${NEW_ROOT}/dev/loop0 b 7 0
   fi

   # Required for gensplash to work.  Not an issue with the initrd as this
   # device isnt created there and is not needed.
   if [ -e /dev/tty1 ]
   then
      [ ! -e ${NEW_ROOT}/dev/tty1 ] && mknod ${NEW_ROOT}/dev/tty1 c 4 1
   fi

   if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]
   then
      bootstrapCD
   fi

   if [ "${REAL_ROOT}" = '' ]
   then
      echo -n -e "${WARN}>>${NORMAL}${BOLD} No bootable medium found. Waiting for new devices"
      
      COUNTER=0
      while [ $COUNTER -lt 3 ]; do
         sleep 3
         echo -n '.'
         let COUNTER=$COUNTER+1
      done   
      
      sleep 1
      echo -e "${NORMAL}"
      bootstrapCD
   fi

   if [ "${REAL_ROOT}" = '' ]
   then
      # Undo stuff
      umount  ${NEW_ROOT}/dev 2>/dev/null
      umount  ${NEW_ROOT}/sys 2>/dev/null
      umount /sys 2>/dev/null

      umount  ${NEW_ROOT}
      rm -rf  ${NEW_ROOT}/*

      bad_msg 'Could not find CD to boot, something else needed!'
      CDROOT=0
   fi
fi

setup_keymap

# Determine root device
good_msg 'Determining root device...'
while true
do
   while [ "${got_good_root}" != '1' ]
   do
      case "${REAL_ROOT}" in
         LABEL\=*|UUID\=*)
         
            ROOT_DEV=""
            retval=1
            
            if [ "${retval}" -ne '0' ]; then
               ROOT_DEV=`findfs "${REAL_ROOT}" 2>/dev/null`
               retval=$?
            fi
            
            if [ "$retval" -ne '0' ]; then
               ROOT_DEV=`busybox findfs "${REAL_ROOT}" 2>/dev/null`
               retval=$?
            fi
            
            if [ "${retval}" -ne '0' ]; then
               ROOT_DEV=`blkid -t "${REAL_ROOT}" | cut -d ":" -f 1 2>/dev/null`
               retval=$?
            fi
            
            if [ "${retval}" -eq '0' ] && [ -n "${ROOT_DEV}" ]; then
               good_msg "Detected real_root=${ROOT_DEV}"
               REAL_ROOT="${ROOT_DEV}"
            else
               bad_msg "Could not find root block device: ${REAL_ROOT}"
               echo '   Please specify a device to boot, or "shell" for a shell...'
               echo -n 'boot() :: '
               read REAL_ROOT
               got_good_root=0
               continue
            fi
            ;;
      esac
            
      if [ "${REAL_ROOT}" = 'shell' ]
      then
         run_shell

         REAL_ROOT=''
         got_good_root=0
         continue
      
      elif [ "${REAL_ROOT}" = '' ]
      then
         # No REAL_ROOT determined/specified. Prompt user for root block device.
         bad_msg "The root block device is unspecified or not detected."
         echo '   Please specify a device to boot, or "shell" for a shell...'
         echo -n 'boot() :: '
         read REAL_ROOT
         got_good_root=0

      # Check for a block device or /dev/nfs
      elif [ -b "${REAL_ROOT}" ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
      then
         got_good_root=1

      else
         bad_msg "Block device ${REAL_ROOT} is not a valid root device..."
         REAL_ROOT=""
         got_good_root=0
      fi
   done


   if [ "${CDROOT}" -eq '1' -a "${got_good_root}" = '1' -a "${REAL_ROOT}" != "/dev/nfs" ]
   then
      # CD already mounted; no further checks necessary
      break
   elif [ "${LOOPTYPE}" = "sgimips" ]
   then
      # sgimips mounts the livecd root partition directly
      # there is no isofs filesystem to worry about
      break
   else
      good_msg "Mounting root..."

      # Try to mount the device as ${NEW_ROOT}
      if [ "${REAL_ROOT}" = '/dev/nfs' ]; then
         findnfsmount
      else
         # mount ro so fsck doesn't barf later
#         REAL_ROOT_TYPE=`vol_id -t ${REAL_ROOT}`
#         mount -t ${REAL_ROOT_TYPE} -o ro ${REAL_ROOT} ${NEW_ROOT}
         if [ "${REAL_ROOTFLAGS}" = '' ]; then
            mount -o ro ${REAL_ROOT} ${NEW_ROOT}
         else
            good_msg "Using mount -o ro,${REAL_ROOTFLAGS}"
            mount -o ro,${REAL_ROOTFLAGS} ${REAL_ROOT} ${NEW_ROOT}
         fi
      fi
      
      # If mount is successful break out of the loop
      # else not a good root and start over.

      if [ "$?" = '0' ]
      then
         break
      else
         bad_msg "Could not mount specified ROOT, try again"
         got_good_root=0
         REAL_ROOT=''
      fi
   fi
done
# End determine root device

#verbose_kmsg

# If cdroot is set determine the looptype to boot
if [ "${CDROOT}" = '1' ]
then
   good_msg 'Determining looptype ...'
   cd ${NEW_ROOT}

   # Find loop and looptype if we have NFS-mounted a livecd
   if  [ "${LOOP}" = '' ] && [ "${REAL_ROOT}" = '/dev/nfs' ]
   then
      if [ -e "${NEW_ROOT}/mnt/cdrom/livecd.loop" ]; then
         LOOP='/livecd.loop'
         LOOPTYPE='normal'
            elif [ -e "${NEW_ROOT}/mnt/cdrom/zisofs" ]; then
         LOOP='/zisofs'
         LOOPTYPE='zisofs'
            elif [ -e "${NEW_ROOT}/mnt/cdrom/livecd.squashfs" ]; then
         LOOP='/livecd.squashfs'
         LOOPTYPE='squashfs'
            elif [ -e "${NEW_ROOT}/mnt/cdrom/image.squashfs" ]; then
         LOOP='/image.squashfs'
         LOOPTYPE='squashfs'
            elif [ -e "${NEW_ROOT}/mnt/cdrom/livecd.gcloop" ]; then
         LOOP='/livecd.gcloop'
         LOOPTYPE='gcloop'
            else
         LOOPTYPE='noloop'
      fi
   fi

   # Failsafe the loop type wasn't set
   if [ "${LOOPTYPE}" = '' ]
   then
      warn_msg 'Warning: loop type unspecified!'
      if [ "${LOOP}" = '/livecd.loop' ]
      then
         LOOPTYPE='normal'
      elif [ "${LOOP}" = '/zisofs' ]
      then
         LOOPTYPE='zisofs'
      elif [ "${LOOP}" = '/livecd.squashfs' ]
      then
         LOOPTYPE='squashfs'
      elif [ "${LOOP}" = '/image.squashfs' ]
      then
         LOOPTYPE='squashfs'
      elif [ "${LOOP}" = '/livecd.gcloop' ]
      then
         LOOPTYPE='gcloop'
      else
         LOOPTYPE='noloop'
      fi
   fi

   cache_cd_contents
   # Setup the loopback mounts

   if [ "${LOOPTYPE}" = 'normal' ]
   then
      good_msg 'Mounting loop filesystem'
      mount -t ext2 -o loop,ro ${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP} ${NEW_ROOT}/mnt/livecd
      test_success 'Mount filesystem'
      FS_LOCATION='mnt/livecd'


   elif [ "${LOOPTYPE}" = 'squashfs' ]
   then
      good_msg 'Mounting squashfs filesystem'
      mount -t squashfs -o loop,ro ${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP} ${NEW_ROOT}/mnt/livecd
      
      test_success 'Mount filesystem'
      FS_LOCATION='mnt/livecd'
   
   elif [ "${LOOPTYPE}" = 'gcloop' ]
   then
      good_msg 'Mounting gcloop filesystem'
      echo ' ' | losetup -E 19 -e ucl-0 -p0 ${NEW_ROOT}/dev/loop0 ${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}
      test_success 'losetup the loop device'

      mount -t ext2 -o ro ${NEW_ROOT}/dev/loop0 ${NEW_ROOT}/mnt/livecd
      test_success 'Mount the losetup loop device'
      FS_LOCATION='mnt/livecd'
   
   elif [ "${LOOPTYPE}" = 'zisofs' ]
   then
      FS_LOCATION="mnt/cdrom/${LOOPEXT}${LOOP}"
   
   elif [ "${LOOPTYPE}" = 'noloop' ]
   then
      FS_LOCATION='mnt/cdrom'

   elif [ "${LOOPTYPE}" = 'sgimips' ]
   then
      # getdvhoff finds the starting offset (in bytes) of the squashfs
      # partition on the cdrom and returns this offset for losetup
      #
      # All currently supported SGI Systems use SCSI CD-ROMs, so
      # so we know that the CD-ROM is usually going to be /dev/sr0.
      #
      # We use the value given to losetup to set /dev/loop0 to point
      # to the liveCD root partition, and then mount /dev/loop0 as
      # the LiveCD rootfs
      good_msg 'Locating the SGI LiveCD Root Partition'
      echo ' ' | \
         losetup -o $(/bin/getdvhoff ${NEW_ROOT}${REAL_ROOT} 0) \
            ${NEW_ROOT}${CDROOT_DEV} \
            ${NEW_ROOT}${REAL_ROOT}
      test_success 'losetup /dev/sr0 /dev/loop0'

      good_msg 'Mounting the Root Partition'
      mount -t squashfs -o ro ${NEW_ROOT}${CDROOT_DEV} ${NEW_ROOT}/mnt/livecd
      test_success 'mount /dev/loop0 /'
      FS_LOCATION='mnt/livecd'
   fi

#
# End cdrom looptype determination and mounting if necessary
#

   if [ "${USE_UNIONFS_NORMAL}" -eq '1' ]
   then
      union_insert_dir ${UNION} ${NEW_ROOT}/${FS_LOCATION}
      
      # Make sure fstab notes livecd is mounted ro.  Makes system skip remount which fails on unionfs dirs.
      sed -e 's|\(.*\s/\s*tmpfs\s*\)defaults\(.*\)|\1defaults,ro\2|' /${UNION}/etc/fstab > /${UNION}/etc/fstab.new
      mv /${UNION}/etc/fstab.new /${UNION}/etc/fstab
   fi

   # Unpacking additional packages from NFS mount
   # This is useful for adding kernel modules to /lib
   # We do this now, so that additional packages can add whereever they want.
   if [ "${REAL_ROOT}" = '/dev/nfs' ]
   then
      if [ -e "${CHROOT}/mnt/cdrom/add" ]
      then
            for targz in `ls ${CHROOT}/mnt/cdrom/add/*.tar.gz`
            do   
               tarname=`basename ${targz}`
               good_msg "Adding additional package ${tarname}"
               (cd ${CHROOT} ; /bin/tar -xzf ${targz})
            done
      fi
   fi

   
   if [ ! "${USE_UNIONFS_NORMAL}" -eq '1' ]
   then
      good_msg "Copying read-write image contents to tmpfs"
      # Copy over stuff that should be writable
      (cd ${NEW_ROOT}/${FS_LOCATION}; cp -a ${ROOT_TREES} ${NEW_ROOT})

      # Now we do the links.
      for x in ${ROOT_LINKS}
      do
         if [ -L "${NEW_ROOT}/${FS_LOCATION}/${x}" ]
         then
            ln -s "`readlink ${NEW_ROOT}/${FS_LOCATION}/${x}`" "${x}" 2>/dev/null
         else
            # List all subdirectories of x
            for directory in `find "${NEW_ROOT}/${FS_LOCATION}/${x}" -type d 2>/dev/null`
            do
               ## Strip the prefix of the FS_LOCATION
               directory=${directory#${NEW_ROOT}/${FS_LOCATION}/}

               ## Skip this directory if we already linked a parent directory
               if [ "${curent_parrent}" != '' ]; then
                  var=`echo "${directory}" | grep "^${curent_parrent}"`
                  if [ "${var}" != '' ]; then
                     continue
                  fi
               fi
               ## Test if the directory exists already
               if [ -e "/${NEW_ROOT}/${directory}" ]
               then
                  # It does exist, link all the individual files
                  for file in `ls /${NEW_ROOT}/${FS_LOCATION}/${directory}`
                  do
                  if [ ! -d "/${NEW_ROOT}/${FS_LOCATION}/${directory}/${file}" ] && [ ! -e "${NEW_ROOT}/${directory}/${file}" ]; then
                        ln -s "/${FS_LOCATION}/${directory}/${file}" "${directory}/${file}" 2> /dev/null
                     fi
                  done
               else
                  # It does not exist, make a link to the livecd
                  ln -s "/${FS_LOCATION}/${directory}" "${directory}" 2>/dev/null
                  current_parent=${directory}
               fi
            done
         fi
      done

      if [ "${DO_slowusb}" ] || [ "${FORCE_slowusb}" ]
      then
         sleep 10
      fi
      mkdir initrd proc tmp sys 2>/dev/null
      chmod 1777 tmp
   fi
   
   #UML=`cat /proc/cpuinfo|grep UML|sed -e 's|model name.*: ||'`
   #if [ "${UML}" = 'UML' ]
   #then
   #   # UML Fixes
   #   good_msg 'Updating for uml system'
   #fi

   # Let Init scripts know that we booted from CD
   export CDBOOT
   CDBOOT=1
   if [ "${DO_slowusb}" ] || [ "${FORCE_slowusb}" ]
   then
      sleep 10
   fi
else
   if [ "${USE_UNIONFS_NORMAL}" -eq '1' ]
   then
      union_insert_dir ${UNION} ${NEW_ROOT}
      mkdir -p ${UNION}/tmp/.initrd
   fi
fi

# Execute script on the cdrom just before boot to update things if necessary
cdupdate

if [ "${SUBDIR}" != '' -a -e "${CHROOT}/${SUBDIR}" ]
then
   good_msg "Entering ${SUBDIR} to boot"
   CHROOT=${CHROOT}/${SUBDIR}
fi

verbose_kmsg

# Move the /memory mount point to what will be the system root so that
# init scripts will be able to unmount it properly at next reboot
#
# Eventually, all "unions over /" mounts should go in that /.unions/
if [ "${USE_UNIONFS_NORMAL}" -eq '1' ]
then
   mkdir -p /${CHROOT}/.unions/memory 2>/dev/null
   mount -o move /memory /${CHROOT}/.unions/memory || echo '*: Failed to move unionfs /memory into the system root!'
fi

if [ "$0" = '/linuxrc' ] || [ "$0" = 'linuxrc' ]
then
   [ ! -e ${CHROOT}/dev/console ] && mknod ${CHROOT}/dev/console c 5 1
   echo -ne "${GOOD}>>${NORMAL}${BOLD} Booting"

   cd ${CHROOT}
   mkdir ${CHROOT}/proc ${CHROOT}/sys 2>/dev/null
   pivot_root . tmp/.initrd
   if [ "${DO_slowusb}" ] || [ "${FORCE_slowusb}" ]
   then
      sleep 10
   fi
   echo -n '.'

   if /tmp/.initrd/bin/[ "${USE_DEVFS_NORMAL}" -eq '1' -a "${CDROOT}" -eq '0' ]
   then
      umount /tmp/.initrd/proc || echo '*: Failed to unmount the initrd /proc!'
      mount -n --move /tmp/.initrd/dev dev || echo '*: Failed to move over the /dev tree!'
      rm -rf /tmp/.initrd/dev || echo '*: Failed to remove the initrd /dev!'
   elif /tmp/.initrd/bin/[ "${USE_UDEV_NORMAL}" -eq '1' ]
   then
      /tmp/.initrd/bin/[ -e /tmp/.initrd/dev/fd ] && rm /tmp/.initrd/dev/fd
      /tmp/.initrd/bin/[ -e /tmp/.initrd/dev/stdin ] && rm /tmp/.initrd/dev/stdin
      /tmp/.initrd/bin/[ -e /tmp/.initrd/dev/stdout ] && rm /tmp/.initrd/dev/stdout
      /tmp/.initrd/bin/[ -e /tmp/.initrd/dev/stderr ] && rm /tmp/.initrd/dev/stderr
      /tmp/.initrd/bin/[ -e /tmp/.initrd/dev/core ] && rm /tmp/.initrd/dev/core
      umount /tmp/.initrd/dev || echo '*: Failed to unmount the initrd /dev!'
      umount /tmp/.initrd/proc || echo '*: Failed to unmount the initrd /proc!'
      umount /tmp/.initrd/sys || echo '*: Failed to unmount the initrd /sys!'
   elif /tmp/.initrd/bin/[ "${CDROOT}" -eq '1' ]
   then
      umount /tmp/.initrd/proc || echo "*: Failed to unmount the initrd /proc!"
      umount /dev 2>/dev/null
      mount -n --move /tmp/.initrd/dev dev 2>/dev/null
      rm -rf /tmp/.initrd/dev || echo '*: Failed to remove the initrd /dev!'

      umount /sys 2>/dev/null
      umount /tmp/.initrd/sys 2>/dev/null
   fi
   echo -n '.'

   # /usr/src/linux/Documentation/initrd.txt:
   #   exec chroot . /sbin/init </dev/console >/dev/console 2>&1

   exec <dev/console >dev/console 2>&1
   echo '.'
   exec chroot . /bin/sh <<- EOF
      umount /tmp/.initrd || echo "*: Failed to unmount the initrd!"
      /sbin/blockdev --flushbufs /dev/ram0 >/dev/null 2>&1
      exec ${REAL_INIT:-/sbin/init} ${INIT_OPTS}
EOF
elif [ "$0" = '/init' ]
then
   [ ! -e ${CHROOT}/dev/console ] && mknod ${CHROOT}/dev/console c 5 1
   [ ! -e ${CHROOT}/dev/tty1 ] && mknod ${CHROOT}/dev/tty1 c 4 1
   echo -ne "${GOOD}>>${NORMAL}${BOLD} Booting (initramfs)"

   cd ${CHROOT}
   mkdir ${CHROOT}/proc ${CHROOT}/sys 2>/dev/null
   echo -n '.'
      umount /sys || echo '*: Failed to unmount the initrd /sys!'
      umount /proc || echo '*: Failed to unmount the initrd /proc!'
   echo -n '.'

   exec switch_root -c "/dev/console" "${CHROOT}" ${REAL_INIT:-/sbin/init} ${INIT_OPTS}
fi

splash 'verbose'

echo 'A fatal error has probably occured since /sbin/init did not'
echo 'boot correctly. Trying to open a shell...'
echo
exec /bin/bash
exec /bin/sh
exec /bin/ash
exec sh
Again thanks for taking the time and excuse my noobishness in this field. I was learning bash, then I got interested in C... then all that got put on the backburner while I was having so much fun playing with edje. That's my problem. Trying to takle 3 things at once instead of concentrating on 1. :lol: Anyway I'll be going back to learning C soon, the E17 stuff can wait.
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kernelOfTruth
Watchman
Watchman


Joined: 20 Dec 2005
Posts: 5737
Location: Vienna, Austria; Germany; hello world :)

PostPosted: Wed Mar 28, 2007 6:12 pm    Post subject: Reply with quote

have a look at my livecd "howto", its still not polished and surely has errors, but it might guide you on your way:

http://forums.gentoo.org/viewtopic-p-3695583.html#3695583

Cheers ! :)

(good luck :wink: )
_________________
https://github.com/kernelOfTruth/ZFS-for-SystemRescueCD/tree/ZFS-for-SysRescCD-4.3.0-r2
2.6.37.2_plus_v1: BFS, CFS,THP,compaction, zcache or TOI
Hardcore Linux user since 2004 :D
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nativemad
Developer
Developer


Joined: 30 Aug 2004
Posts: 839
Location: Switzerland

PostPosted: Thu Mar 29, 2007 11:38 am    Post subject: Reply with quote

Quote:
No because the kernel I'm currently running (not the one on the CD) doesn't have the squashfs support option enabled. Is this part of the problem?
It shouldn't be a problem, but would be a bit helpful, if you could look into the squash. Just for checking that everything is in place... :wink:
Quote:

? (I'm tired of burning coasters :lol: )
There is somewhere (the wiki i think) a little howto test just the plain iso with Qemu. Also Vmware is a nice option. And i alway have a bunch of cdrws laying around.... :wink:

Quote:
Mediafound on /dev/iseries/vcd*
I think this is probably your real problem! Where is your cdrom located with the Kernel you want to run? i've never heard of /dev/iseries/vcd!?! isn't it normally /dev/hd[a-d]1 or /dev/sd[a-d]1!?! I don't have any nforce boards here, probably this could be correct, but then the star behind the device is confusing!?!
Perhaps you should just check something like this in initrd.scripts instead of the original findcdmount() function [i only added the comment at this code-snipptes line 4 and made it a bit more agressive in the following line :D ]:
Code:
findcdmount() {
   if [ "$#" -gt "0" ]
   then
      #We are now going to take the brute-force variation of finding the right drive...
      for x in /dev/hda1 /dev/hdb1 /dev/hdc1 /dev/hdd1 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1 $*
      do
         # Check for a block device to mount
         if [ -b "${x}" ]
         then
            good_msg "Attempting to mount media:- ${x}"
            if [ -z "${CDROOT_DEV}" ]
            then
               mount -r -t auto ${x} ${NEW_ROOT}/mnt/cdrom \
                  > /dev/null 2>&1
            else
               mount -r -t iso9660 ${x} ${NEW_ROOT}/mnt/cdrom \
                  > /dev/null 2>&1
            fi
            if [ "$?" = '0' ]
            then
               # Check for a LiveCD
               if [ -e ${NEW_ROOT}/mnt/cdrom/${SUBDIR}/livecd ]
               then
                  REAL_ROOT="${x}"
                  break
               else
                  umount ${NEW_ROOT}/mnt/cdrom
               fi
            fi
         fi
      done
      if [ "${REAL_ROOT}" != '' ]
      then
         good_msg "Media found on ${x}"
      fi
   fi
}

Hopefully it is this strange /dev/iseries thing... Otherwise we have to look where we want to place the /bin/sh in! :wink:

Nevermind, i am more than a beginner in C, and i think it would be very boring if anybody would have the same interests everywhere... :P

@kernelOfTruth
I had much problems with recent kernels and genkernel --unionfs-dev! Did it work for you???
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wynn
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PostPosted: Thu Mar 29, 2007 3:55 pm    Post subject: Reply with quote

nativemad wrote:
sirdilznik wrote:
Mediafound on /dev/iseries/vcd*
I think this is probably your real problem!
You must be right, /dev/iseries/vcd is the fourth virtual disk on an IBM iSeries computer (http://www-03.ibm.com/systems/i/hardware/) — unless, of course, that's what sirdilznik has !
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sirdilznik
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PostPosted: Thu Mar 29, 2007 4:03 pm    Post subject: Reply with quote

wynn wrote:
nativemad wrote:
sirdilznik wrote:
Mediafound on /dev/iseries/vcd*
I think this is probably your real problem!
You must be right, /dev/iseries/vcd is the fourth virtual disk on an IBM iSeries computer (http://www-03.ibm.com/systems/i/hardware/) — unless, of course, that's what sirdilznik has !
Nope, dual-core Opteron 165. Click my sig for further specs.
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nativemad
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PostPosted: Thu Mar 29, 2007 4:28 pm    Post subject: Reply with quote

He meant, that /dev/iseries/vcd* which seems to get detected by the ramdrive as cdrom cant be your real cdrom! Unless you spent a bit more money to IBM, as an iseries computer is a big Mainframe, which normally runs AIX or OS400! You even can't get a native linux install on that Hardware, as far as i know! -but up to 32 virtual machines... :P
Also, this is NOT an x86 architecture!! i think iseries are alpha, ppc64 and perhaps the Cell (like ps3) But absoutely unsure, as i prefer Sun mainframes....... :D

Long story short: Please check that you have choosen the right cpu architecture in your kernelconfig! If this doesn't Help, try the findcdmount() function i posted earlier....

I still wonder why you got /dev/iseries, and the Kernel boots!!!!???!!! Do you manage your /dev manually without udev or what?!? 8O
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sirdilznik
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PostPosted: Thu Mar 29, 2007 4:34 pm    Post subject: Reply with quote

nativemad wrote:
He meant, that /dev/iseries/vcd* which seems to get detected by the ramdrive as cdrom cant be your real cdrom! Unless you spent a bit more money to IBM, as an iseries computer is a big Mainframe, which normally runs AIX or OS400! You even can't get a native linux install on that Hardware, as far as i know! -but up to 32 virtual machines... :P
Also, this is NOT an x86 architecture!! i think iseries are alpha, ppc64 and perhaps the Cell (like ps3) But absoutely unsure, as i prefer Sun mainframes....... :D

Long story short: Please check that you have choosen the right cpu architecture in your kernelconfig! If this doesn't Help, try the findcdmount() function i posted earlier....

I still wonder why you got /dev/iseries, and the Kernel boots!!!!???!!! Do you manage your /dev manually without udev or what?!? 8O
Architecture chosen is Generic x86_64

Do I replace the findfsmount() function in the initrd.scripts with your findcdmount() function or just add it in?

Edit: Also I wanted to use Qemu, but can't since i don't have gcc-3.x.x only gcc-4.1.2 and gcc-4.2.0. I guess libdistc++v3 isn't enough to compile Qemu.
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nativemad
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PostPosted: Thu Mar 29, 2007 4:42 pm    Post subject: Reply with quote

You can just edit the line below in your existing function, its just the list of possible cdrom devices. :wink:

for x in /dev/hda1 /dev/hdb1 /dev/hdc1 /dev/hdd1 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1 $*

instead of

for x in $*

That should help! :D
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sirdilznik
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PostPosted: Thu Mar 29, 2007 4:51 pm    Post subject: Reply with quote

nativemad wrote:
You can just edit the line below in your existing function, its just the list of possible cdrom devices. :wink:

for x in /dev/hda1 /dev/hdb1 /dev/hdc1 /dev/hdd1 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1 $*

instead of

for x in $*

That should help! :D
Doh! I looked at the script wrong. I'll give it a shot, thanks.
Just to give more info. I have these drives :
/dev/hda = ATA hard drive
/dev/hdc = dvd burner
/dev/hdd = dvd rom
/dev/sda = SATA hard drive (where / is located)
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PostPosted: Thu Mar 29, 2007 4:58 pm    Post subject: Reply with quote

ok, then you also could do it like
for x in /dev/hdc1 $*
for ultra fast booting from the burner on this machine.... :wink:
Dont forget to rebuild your initrd!!! genkernel initrd should do it. than rename and so on.....
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wynn
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PostPosted: Thu Mar 29, 2007 5:54 pm    Post subject: Reply with quote

nativemad wrote:
ok, then you also could do it like
for x in /dev/hdc1 $*
for ultra fast booting from the burner on this machine.... :wink:
Dont forget to rebuild your initrd!!! genkernel initrd should do it. than rename and so on.....
Shouldn't it be
Code:
for x in /dev/hdd1 /dev/hdc1 $*
for ultra-fast whotsit as /dev/hdd is the reader and /dev/hdc the burner?
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PostPosted: Thu Mar 29, 2007 6:07 pm    Post subject: Reply with quote

nativemad wrote:
ok, then you also could do it like
for x in /dev/hdc1 $*
for ultra fast booting from the burner on this machine.... :wink:
Dont forget to rebuild your initrd!!! genkernel initrd should do it. than rename and so on.....
I tried it with that and with the disc in both drives. No difference, just another coaster to add to my growing collection. :cry:
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PostPosted: Thu Mar 29, 2007 6:09 pm    Post subject: Reply with quote

Quote:
for ultra-fast whotsit as /dev/hdd is the reader and /dev/hdc the burner?

Ok, that way it fist checks the reader... If you get really lazy, the /dev/hdc option allows you to just leave the fresh-burned cd in the burner and don't waste the time for an attempt to mount the other drive! :lol:
-just joking around!-
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PostPosted: Thu Mar 29, 2007 6:18 pm    Post subject: Reply with quote

nativemad wrote:
Quote:
for ultra-fast whotsit as /dev/hdd is the reader and /dev/hdc the burner?

Ok, that way it fist checks the reader... If you get really lazy, the /dev/hdc option allows you to just leave the fresh-burned cd in the burner and don't waste the time for an attempt to mount the other drive! :lol:
-just joking around!-
Aah that's it, it takes me some time to catch up :)
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nativemad
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PostPosted: Thu Mar 29, 2007 6:22 pm    Post subject: Reply with quote

Quote:
I tried it with that and with the disc in both drives. No difference, just another coaster to add to my growing collection.
Don't you have some cd-rw's?

Ok, i would then try to eliminate that strange device-file in the init! The probably easyest way is this:
Code:

findcdmount() {
   if [ "$#" -gt "0" ]
   then
      #lets kick that iseries thing!
 rm -rf /dev/iseries >/dev/null 2>&1    # sorry i forgot the > before editing!
      for x in $*
      do

or you also could try it manually...
Code:
findcdmount() {
   if [ "$#" -gt "0" ]
   then
      #lets openup a shell to have a look whats going on!
/bin/sh
      for x in $*
      do




EDIT: forgot the > the first time in code nr. 1!!!!!!


Last edited by nativemad on Thu Mar 29, 2007 6:31 pm; edited 2 times in total
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sirdilznik
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PostPosted: Thu Mar 29, 2007 6:25 pm    Post subject: Reply with quote

nativemad wrote:
Quote:
I tried it with that and with the disc in both drives. No difference, just another coaster to add to my growing collection.
Don't you have some cd-rw's?

Ok, i would then try to eliminate that strange device-file in the init! The probably easyest way is this:
Code:

findcdmount() {
   if [ "$#" -gt "0" ]
   then
      #lets kick that iseries thing!
[b] rm -rf /dev/iseries /dev/null 2>&1[/b]
      for x in $*
      do

or you also could try it manually...
Code:
findcdmount() {
   if [ "$#" -gt "0" ]
   then
      #lets openup a shell to have a look whats going on!
[b]/bin/sh[/b]
      for x in $*
      do
No CD-RWs, but I have plenty of CD-Rs (and they're cheap), like 50 more. I have to go to work now, but I will try your suggestion when I get back. Also I will recompile my current kernel to include squashfs so I can mount the disc in my current system. Again thanks for all the help.
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PostPosted: Thu Mar 29, 2007 6:35 pm    Post subject: Reply with quote

nativemad wrote:

@kernelOfTruth
I had much problems with recent kernels and genkernel --unionfs-dev! Did it work for you???


I just omitted this setting & used the unionfs-version from the kernel (I compiled it in), perhaps therefore I'm experiencing some weird errors when trying to set up cupsd & installing additional printer drivers on the livecd, I think -> it runs out of space, although there's still 1 GB remaining :wink:
(I'm on "small gentoo X [internal test build :roll: ] with xorg & printer-support)
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nativemad
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PostPosted: Thu Mar 29, 2007 6:55 pm    Post subject: Reply with quote

Quote:
I just omitted this setting & used the unionfs-version from the kernel (I compiled it in), perhaps therefore I'm experiencing some weird errors when trying to set up cupsd & installing additional printer drivers on the livecd, I think -> it runs out of space, although there's still 1 GB remaining :wink:

I also compiled it in the kernel and leaved the genkernel-option away. But to get unionfs really working i have it like this, somewhere in linuxrc (this is just a snippet, as my files are really, really modded :wink: ):
Code:
mkdir ${NEW_ROOT}/root
for x in usr lib opt bin sbin ${ROOT_TREES}
 do
 if [ ! -e ${NEW_ROOT}/${x} ] || [ ! -e ${NEW_ROOT}/mnt/livecd/${x} ]
   then
     mkdir ${NEW_ROOT}/${x}
     mkdir ${NEW_ROOT}/root/${x}
     mount -t unionfs -o rw,dirs=${NEW_ROOT}/root/${x}=rw:${NEW_ROOT}/mnt/livecd/${x}=ro writeloop${x} ${NEW_ROOT}/${x}
  fi
done

You should be able to see some union-mounts with "mount" without parameters.
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PostPosted: Sat Mar 31, 2007 4:59 pm    Post subject: Reply with quote

YES!!!!!!!! Success!! sirdilznix 0.1 is alive!!!!

I started over from scratch and decided to make this LiveCD specific to my particular computer and not "universal" like I was trying to make before. This time I basically copied the kernel config from my current kernel to the kernel on the LiveCD, then made sure all the necessary options were enabled (they were) as opposed to running make allmodconfig, then building certain options directly in. My goal for this LiveCD was to make a disc that would be a minimal LiveCD proper for installing or rescuing a reiser4 partition with the new cryptcompress plugin (I'll be experimenting with that soon *rubs hands together*), thus I needed a very recent mm kernel and reiser4progs-1.0.6. I also added support for all other major filesystems (including ext4) and the necessary tools. I used mm-sources-2.6.21-rc5-mm3. I added links and mc for the bare minimum for installation along with mpg123 and cdplay so I could listen to music, and angband and moon-buggy for entertainment purposes while stuff is compiling, etc... It works!

Now that i have a functioning disc for myself I can work on making a more universal one for the masses (an ~amd64 one first, since that is what I have now, and if there is demand I'll make a ~x86 one too). I'm convinced that there was probably some kind of conflict between drivers with too many modules being loaded and conflicting with each other, or too many options built directly into the kernel conflicting with each other. I think that is what was causing the disc to have faulty detection. Now that I have a working disc for myself I can take my time making the universal ones. I will probably include a stage3 tarball and a portage snapshot tarball for those that won't have a working internet connection to start with (not an issue on my machine, dhcp works just fine).

Thank you everybody for all the help. I really appreciate it. I learned a bunch during this whole process and will learn a lot more during the making of the universal versions. Hopefully sirilznix 0.2 ~amd64 and ~x86 will be available soon. 8)
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PostPosted: Tue Apr 03, 2007 2:56 pm    Post subject: Creating a LiveCD Reply with quote

I am attempting to create a livecd using the instructions fromhttp://gentoo-wiki.com/HOWTO_build_a_LiveCD_from_scratch , and it is going pretty well. The problem, is, that when it boots, it tells me my loops is not found. I'm gonna include everything I can think of without making the post totally humungous:

~/livecd/source/boot/grub/menu.lst:

default 0
timeout 30
splashimage=/boot/grub/splash.xpm.gz

title=LiveCD
kernel /boot/vmlinuz root=/dev/ram0 real_root=/dev/loop0 looptype=squashfs loop=/livecd.squashfs udev nodevfs cdroot
initrd /boot/initrd

title=Memtest86+
kernel /boot/memtest86plus/memtest.binmksquashfs ~/livecd/target/source/ ~/livecd/target/holding/livecd.squashfs -noappend



mksquash and mkisofs commands:

mksquashfs ~/livecd/target/source/ ~/livecd/target/holding/livecd.squashfs -noappend
touch ~/livecd/target/holding/livecd
mkisofs -R -b boot/grub/stage2_eltorito -no-emul-boot -boot-load-size 4 -boot-info-table -iso-level 4 -o ~/livecd.iso ~/livecd/target/holding

directory Structure:

/root - - - source #where I build the system
|
- - - target
|
- - - source #the reduced source, without such things as portage, etc - created using rsync
|
- - - holding
|
- - - boot
|
- - - livecd.squashfs

Messages:

>> Attempting to mount media:- /dev/hda
>> Attempting to mount media:- /dev/hda2
>> Attempting to mount media:- /dev/hda3
>> Media found on /dev/iseries/vcd*
>> Deterimining root device. . .
>>Determining looptype . . .
!! Invalid loop location: /livecd.squiashfs
!! Please export LOOP with a valid location, or reboot and pass a proper loop=. . .
!! kernel command line

/dev/hda is a hard disk, and I am not sure what /dev/iseries/vcd* is. Thanks for any input on this.
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PostPosted: Tue Apr 03, 2007 3:39 pm    Post subject: Reply with quote

Make sure "loop=/livecd.squashfs" is in the proper place on the livecd, it may not be there and complains.
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