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BOOTCD2DISK.CONF(5) bootcd utils BOOTCD2DISK.CONF(5)

NAME

bootcd2disk.conf - bootcd utils

SYNOPSIS

/etc/bootcd/bootcd2disk.conf

DESCRIPTION

bootcd2disk.conf is a configuration file used by bootcd2disk.

The default /etc/bootcd/bootcd2disk.conf is also available in directory /usr/share/doc/bootcd/examples/. The default can be used, when running from an iso image created by bootcdwrite, to reinstall the first disk.

bootcd2disk.conf will be sourced as shell file. The following OPTIONS can be used. They are ordered alphabetical.

OPTIONS

after_copy()
If the function is defined, it will run after the system has been copied to the target system and while the target system is still mounted at COPYDEST.

For example to change the network configuration the following script could be defined:

after_copy()
{
  cat <<EOF >$COPYDEST/etc/network/interfaces
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
  address 192.168.1.2
  netmaks 255.255.255.0
  gateway 192.168.1.1
EOF
}


Default:

# the function is not defined
unset -f after_copy




bootcd_mount()

The function will be called with the "mountpoint directory" as option. To use Partiton 1 of the first disk as /boot and partiton 3 of the first disk as / the function could be defined as:

bootcd_mount()
{
  local mountpoint
  bootcd_global DISK0P1 DISK0P3
  mountpoint="$1"
  mount $DISK0P3 $mountpoint
  mkdir $mountpoint/boot
  mount $DISK0P1 $mountpoint/boot
}


Default:

# the function is not defined
unset -f bootcd_mount




bootcd_umount()

The function will be called with the "mountpoint directory" as option. If / and /boot are mounted, the function could be defined as:

 bootcd_umount()
 {
   local mountpoint
   mountpoint="$1"
   umount $mountpoint/boot
   umount $mountpoint"
}


Default:

# the function is not defined
unset -f bootcd_umount




BOOTCDMP

This defines the mountpoint, where filesystems can be mounted to be temporarily modified by bootcd2disk.

Default:

BOOTCDMP="/mnt/bootcd.disc"




COPYDEST

This points to the mounted disk and normally needs not to be changed. Default:

COPYDEST="/mnt/bootcd.disc"




DISK#

DISK# stands for one of DISK0, DISK1, ... DISK99. The Variables DISK# can be defined to specify the disks disk that will be newly partitioned before copying the cd to it:

DISK0="/dev/hda"


To not partition any disk:

DISK0=""


To let bootcd2disk find a disk (bootcd2disk tries to use the first disk):

DISK0="auto"


It is possible to define more disks. The disk number must be increased by 1:

DISK1="auto"
DISK2="auto"


Default:

DISK0="auto"




DISKIDTYP

With the variable DISKIDTYP it can be defined which type of name bootcd should write in config files. When naming a disk in a file, bootcd2disk can try to name the disk by UUID:

DISKIDTYP="UUID"


Or bootcd can name the disk by the devicename:

DISKIDTYP="DEVNAME"


Default:

DISKIDTYP="UUID"




do_first()

A function do_first() can be defined, to do some things first before doing anything else. Example of a function, that prints something:

do_first()
{
  info "function do_first is now running"
}


Default:

# make sure the function is not defined
unset -f do_first




do_last()

A function do_last() can be defined, to do some things laster after doing anything else. Example of a function, that prints something:

do_last()
{
  info "function do_last is now running"
}


Default:

# make sure the function is not defined
unset -f do_last




EFIBOOT

Create a disk that can boot with old BIOS:

EFIBOOT="bios"


Create a disk that can boot with EFI. Will work with secureboot enabled, if kernel and grub are signed or original from debian.:

EFIBOOT="efi"


To check current system. If EFI is enabled use "efi" if not use "bios". The needed bootloader software for this option is probably aready installed:

EFIBOOT="auto"


Create a disk that can boot from BIOS and EFI. If you have installed grub-pc-bin and grub-efi-amd64-bin this may be the best option. The disk may be removed, and used on another host, with either bios or efi:

EFIBOOT="bios+efi"


Default:

EFIBOOT="auto"




EXCLUDE_SYSTEM

This files need to be excluded on most systems. So the default may be ok in most cases. Additional files to be excluded can be defined in EXCLUDE

Default:

EXCLUDE_SYSTEM="/dev/ /mnt/ /proc/ /run/ /sys/ /tmp/ /var/tmp/"




EXCLUDE

Some files are already exluded with EXCLUDE_SYSTEM. With EXCLUDE additional Files can be excluded. Directories or files that should not be copied can be defined in this variable as a space separated list. Each entry should start with /.

Each list item will be given to rsync as --exclude <item>.

Example: To exlcude everything in directory /etc/dir1 use:

EXCLUDE="/etc/dir1/"


To exclude directory itself use:

EXCLUDE="/etc/dir1"


Default:

EXCLUDE=""




EXT2FS

Each device or logical volume definition needs a new line!. Do not not create ext2 filesystems:

EXT2FS=""


Create partitions defined in EXT2FS with mke2fs:

EXT2FS="/dev/hda1
/dev/hda3"


Default:

EXT2FS=""


if also EXT3FS="auto" then ext3 will be used if possible



EXT3FS

Each device or logical volume definition needs a new line! Do not not create ext3 filesystems:

EXT3FS=""


Create partitions defined in EXT3FS with mke2fs -j:

EXT3FS="/dev/hda1
/dev/hda3"


Default:

EXT3FS=""


if also EXT4FS="auto" then ext4 will be used if possible



EXT4FS

Each device or logical volume definition needs a new line! Do not not create ext4 filesystems:

EXT4FS=""


Create partitions defined in EXT4FS as ext4 filesystems:

EXT4FS="/dev/hda1
/dev/hda3"


Default:

EXT4FS=""




FSTAB

Don't change the /etc/fstab copied form cd:

FSTAB=""


Example to define FSTAB yourself:

FSTAB="/dev/sda1 /boot ext2 defaults 0 1
/dev/sda2 none  swap sw 0 0
/dev/sda3 /     ext2 defaults,errors=remount-ro 0 1
proc      /proc proc defaults 0 0"


The string DISK0P1 will be automatically changed to <device of the first partition of the first disk>. The string UUID!DISK1P3 will be automacally changed to the UUID of the third partition of the second disk>.

Depends on:

EFIBOOT


Default:

FSTAB=""




GRUB

If you don't want to use GRUB:

GRUB=""


If GRUB2 is not installed or defined and GRUB is defined and grub is installed it will be used and LILO will be ignored.

If you want to define it yourself:

GRUB="default 0
timeout 5
color   cyan/blue white/blue
title   Debian GNU/Linux
root    (hd0,0)
kernel  /vmlinuz-2.4.27-2-386 root=/dev/hda3 ro
initrd  /initrd.img-2.4.27-2-386
savedefault
boot"


Default:

GRUB=""




GRUB2

This variable defines if GRUB2 will be used and how the file /boot/grub/grub.cfg is created. If GRUB2 and GRUB and LILO is defined and installed, GRUB2 will be used

If you don't want to use GRUB2:

GRUB2=""


GRUB2 can also define the content of /boot/grub/grub.cfg. Grub2 starts counting partitions at 1 and grub1 starts at 0. Example:

GRUB2="
set lang=en
insmod gettext
set timeout=5
set menu_color_normal=cyan/blue
set menu_color_highlight=white/blue
menuentry 'Debian GNU/Linux' --class debian --class gnu-linux --class gnu --class os {
     insmod ext2
     set root='(hd0,1)'
     linux   /$(basename $KERNEL) root=DISK0P3 ro
     initrd  /$(basename $INITRD)
}"


If GRUB2 is auto, update-grub will be used to create /boot/grub/grub.cfg automatically. Default:

GRUB2="auto"




GRUBBOOTDIR

Example:

GRUBBOOTDIR="0"


Default:

GRUBBOOTDIR=""




GRUBBOOTDISK

If /boot is not the first partition on disk, we need to know which one it is to install grub properly. bootcd starts counting with 0 like grub1 ! Example:

GRUBBOOTDISK="hd0"


Default:

GRUBBOOTDISK=""




GRUBDEVICEMAP

Syntax:

GRUBDEVICEMAP=auto|no|<value>


Let bootcd2disk delete the original device.map, so that it will be auto-created by grub again.:

GRUBDEVICEMAP="auto"


bootcd2disk shoult not change device.map. This should work if a bootcd is installed on the original hardware:

GRUBDEVICEMAP="no"


Everything else will be used as new value for device.map. Default:

GRUBDEVICEMAP="auto"




IMAGEURL

If bootcd2disk is slow on your system (because of a slow CD/DVD drive or the HP ILO virtual CD interface), you can use a image server to get the image from. bootcd2disk use the SWAP partition of your upcoming system as temporary space and copy the image from the configured image server (IMAGEURL or cmdline -url) to this partition and use it as image. Please use a ip because of failed DNS and you need also the configured ip interface. The "url" is used with "wget" so all url from wget are possible. Example:

Default:

IMAGEURL=""




ISOLOOPBACK

Normally the System is running from bootcd, when bootcd2disk is called. Then files under / are copied to the new disk. But it may be faster to additionally mount the bootcd to another mountpoint and copy from there. This mountpoint can then be defined with ISOLOOPBACK

Default:

ISOLOOPBACK=""




LILO

If GRUB is defined and installed LILO will be ignored. If you don't want to change the /etc/lilo.conf copied from cd:

LILO=""


If you want to define it yourself:

LILO="boot=DISK0
delay=20
vga=0
image=/vmlinuz
root=DISK0P3
initrd=/initrd.img
label=Linux
read-only"


Default:

LILO=""




LINUXFS

This can be set to the preferred filesystem. Possible values are ext4, ext3, ext2, xfs or auto to calculate an an available filesystem.

Default:

LINUXFS="auto"




LUKS

Each line should have the 4 values target, source_device, key_file and options as described in crypttab(5).

Only the options luks and swap are supported. If bootcd2disk is running without controlling tty for password input, the default password bootcd will be set, that has to be changed manually later.

Example with target root filesystem luksroot and target swap partition luksswap:

LUKS="luksroot DISK0P1 none luks
luksswap DISK0P2 /dev/urandom swap"


Default:

LUKS=""




LVMGRP

Each volume group definition needs a new line. Syntax

LVMGRP="<group> <diskdev> [<diskdev> ...][<vgcreate-cmd>][...]"


Example1

LVMGRP="vg00 DISK0P1
vg01 DISK0P2
vg02 DISK0P3 DISK0P4"


Example2 which is the same as Example1 because it uses the default schema

LVMGRP="vg00 DISK0P1 vgcreate vg00 DISK0P1
vg01 DISK0P2 vgcreate vg01 DISK0P2
vg02 DISK0P3 vgcreate vg02 DISK0P3 DISK0P4"


Default:

LVMGRP=""




LVMVOL

Each logical volume definition needs a new line! Size in vgcreate syntax is MByte, e.g.: 100 means 100 MByte. Syntax

LVMVOL="<volname> <size> <group> [<lvcreate-cmd>][...]"


Example1

LVMVOL="lv00 2000 vg00"


Example2 which is the same as Example1 because it used the default schema

LVMVOL="lv00 2000 vg00 lvcreate -n lv00 -L 2000 vg00"


Example3 uses striping for the second volume

LVMVOL="lv00 2000 vg00
lv01 100 vg00 lvcreate -n lv01 -i 3 -I 8 -L 100 vg00"


Default:

LVMVOL=""




MD

To define Raid devices. Not well tested. Not documented. Syntax

MD="<mddev> <level> <diskdev> ... [<mdadm cmd>]"


Example:

MD="md0 1


Default:

MD=""




ORDER

This defines the order of tasks neccessarry to produce disk partitions. The tasks available are parti md luks lvm.

The task parti can be defined with the variable SFDISK#. The task luks can be defined with the variable LUKS. The task md can be defined with the variable MD. The task lvm can be defined with the variables LVMGRP and LVMVOL. Only if a task is defined, the task will be executed.

It is possible to schedule a task multiple times in ORDER. If task parti is defined multiple times, the task will only be executed, if DISK# that corresponds to SFDISK# is available at task's turn. If task md is defined multipe times, the task will only be executed, if <diskdev> defined in MD is available at task's turn. If * task* lvm is defined multipe times, the task will only be executed, if <diskdev> defined in LVMGRP is available. at task's turn.

Default:

ORDER="parti luks md lvm"




PARTITIONLABEL

If you want the filesystem or swap partitions to have labels you can define them here. Example:

PARTITIONLABEL="/dev/sda1:/
/dev/sda2:SWAP-sda2"


Default:

PARTITIONLABEL=""




RESTORECMD

The RESTORECMD defined in bootcd2disk.conf defines how the backup is Default:

RESTORECMD=""




RESUME

If you get the Warning "Gave up waiting for suspend/resume device" when booting from a disk created with bootcd2disk, this may help. It fixes the file /etc/initramfs-tools/conf.d/resume by changing the RESUME option in /etc/initramfs-tools/initramfs.conf For example to define the RESUME device as /dev/hda2 use:

RESUME="/dev/hda2"


To define the RESUME device with a Filesystem UUID:

RESUME="UUID=86c6e572-eec4-4a29-8cbd-2864f4e44621"


To not change the RESUME configuration, the variable has to be empty:

RESUME=""


To disable the RESUME Feature, RESUME has to be none:: Default:

RESUME="none"




SFDISK#

SFDISK# stands for one of SFDISK0, SFDISK1, ... SFDISK99 and defines how sfdisk will partition the DISK#.

If a disk should not be repartitioned, no definition is needed.

To partition DISK2 the following config could be used, see man sfdisk(8):

SFDISK2="
unit: sectors
,50
,100,S
;
"


See SFDISK# in default bootcd2disk.conf for an example that calculates SFDISK0 depending on on EFIBOOT.

The Default is to not repartition any disks.



SSHHOSTKEY

Syntax:

SSHHOSTKEY=yes|no


If you are using ssh it is helpful to have a unique ssh hostkey for each PC installed with bootcd2disk. This will be generated with:

SSHHOSTKEY="yes"


To use in backups:

SSHHOSTKEY="unchanged"


Default:

SSHHOSTKEY="yes"




SWAP

Each swap device definition needs a new line! If you don't want to run mkswap use:

SWAP=""


If you want to specify partitions for mkswap:

SWAP="/dev/hda2"


Default:

SWAP=""




ALLOWEDDISKS

If a disk is searched (e.g. DISK0="auto") and ALLOWEDDISKS="", the first free disk found will be used. IF ALLOWEDDISKS is defined the first free disk listed in ALLOWEDDISKS will be used.

To try only disks /dev/sda and /dev/hda in this order use:

ALLOWEDDISKS="/dev/sda /dev/hda"


This can also be used to only try individual disks, if they are connected:

ALLOWEDDISKS="/dev/disk/by-id/<id1>
/dev/disk/by-id/<id2>
/dev/disk/by-id/<id3>"


Default:

ALLOWEDDISKS=""




UDEV_FIXNET

Syntax:

UDEV_FIXNET=yes|no


If you are using udev filesystem and install the image on other machines you need to set this to "yes" because the network interfaces are hardwired in /etc/udev/rules.d/z25_persistent-net.rules (etch) or in /etc/udev/rules.d/70-persistent-net.rules (lenny) and we must remove them.:

UDEV_FIXNET="yes"


Default:

UDEV_FIXNET="yes"




VFAT

Each device or logical volume definition needs a new line!. VFAT is often needed for EFI. If not needed:

VFAT=""


To ceate partitions with mkdosfs:

VFAT="/dev/sdb4"


Default:

VFAT=""




XFS

Each device or logical volume definition needs a new line! Create partitions defined as xfs filesystems:

XFS="/dev/hda1
/dev/hda3"


Do not not create xfs filesystems:: Default:

XFS=""




PREDEFINED

simple
Using simple creates a system with a bootable disk and the mountpoints /, /boot and if applicable /boot/efi.

To uses this all of the following OPTIONS have to be defined as simple:

VFAT SWAP FSTAB SFDISK0 GRUB2


One of the following OPTIONS has to be defined as simple:

EXT2FS EXT3FS EXT4FS XFS


Additionally the following OPTIONS have to be auto or defined as needed:

DISK0 DISKIDTYP EFIBOOT


The following OPTIONS have to be empty or undefined:

bootcd_mount() bootcd_umount() GRUB LILO GRUBBOOTDISK
GRUBBOOTDIR GRUBDEVICEMAP


Other OPTIONS may be configured as needed.



ENVIRONMENT

ia_logfile
The logfile of bootcd2disk is /var/log/bootcd2disk, if not overwriten with variable ia_logfile before.


DEFINING OPTIONS

There are function OPTIONS, number OPTIONS and normal OPTIONS that can be defined directly:

Example: direct definition of function OPTION do_first():

do_first() { info "function do_first is now running"; }


Example: direct definition of a number OPTION DISK#:

DISK0="/dev/hda"; DISK2="auto"


Example: direct definition of a normal OPTION DISKIDTYP:

DISKIDTYP="UUID"


If an OPTION can not be defined immediatelly, because it needs the definition of another OPTION, a function define_OPTION can be created, that calls the function needs with a string containing a space separated list of OPTIONS needed:

Example: function do_first needs DISKIDTYP:

define_do_first() {
  needs "DISKIDTYP"
  if [ "$DISKIDTYP" = "UUID" ]; then
    do_first() { info "DISKIDTYP = UUID"; }
  else
    do_first() { info "DISKIDTYP != UUID"; }
  fi
}


Example: number OPTION SFDISK# needs DISKIDTYP:

define_SFDISK() {
  needs "DISKIDTYP"
  if [ "$DISKIDTYP" = "UUID" ]; then
    SFDISK0="..."
    SFDISK3="..."
  else
    SFDISK0="..."
    SFDISK3="..."
  fi
}


Example: normal OPTION FSTAB needs DISKIDTYP:

define_FSTAB() {
  needs "DISKIDTYP"
  if [ "$DISKIDTYP" = "UUID" ]; then
    FSTAB="..."
  else
    FSTAB="..."
  fi
}




USING PARTITION-TOKENS

In some OPTIONS special partition-tokens can be used, that will be replaced with the device path or the UUID of the partition, depending on OPTION DISKIDTYP

Example partition-token:

DISK3P7


This means 7th partition of 4th disk. Example usage of partition-token in OPTION FSTAB:

FSTAB="DISK3P7 /boot ext3 defaults 0 1
..."


To use partition-tokens in a function OPTION" variables have to be declared with bootcd_global . Example:

bootcd_mount()
{
  bootcd_global DISK0P3
  mountpoint="$1"
  mount $DISK0P3 $mountpoint
  ...
}


The function bootcd_global makes sure that all partition-tokens are available in the same named variable.



SEE ALSO

bootcd(7), bootcdwrite(1), bootcd2disk(1), bootcdflopcp(1), bootcdmk2diskconf(1), bootcdbackup(1), bootcdwrite.conf(5), crypttab(5), /usr/share/doc/bootcd/examples/

AUTHOR

bernd.schumacher@hpe.com

License: GNU General Public License, version 3

COPYRIGHT

Bernd Schumacher <bernd.schumacher@hpe.com> (2007-2020)
2020-08-07 0.1