Bootloader reinstall mode for setup.
This commit is contained in:
Evgeniy Ivanov
Ben Gras
parent
72eca0eb1e
commit
9290237811
1 changed files with 210 additions and 24 deletions
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@ -74,6 +74,34 @@ warn()
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echo -e "\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b ! $1"
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}
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check_mbr()
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{
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# check for potential problems with old mbr.
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disk=`echo -n "/dev/$primary" | sed 's/p[0-3]//'`
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minix_primaries=`echo -n "" | fdisk "$disk" | grep "MINIX" | wc -l`
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if [ "$minix_primaries" -gt 1 ]
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then
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# old mbr + bootxx will not work with several partitions of
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# the same type.
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dd if=/usr/mdec/mbr of=temp_mbr_netbsd bs=1 count=440 2>/dev/null
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dd if="$disk" bs=1 count=440 2>/dev/null | cmp - temp_mbr_netbsd >/dev/null
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if [ "$?" -ne 0 ]
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then
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echo ""
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echo "Warning: you have MBR which doesn't support multiple MINIX 3 partitions!"
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echo "You will be able to boot from the first one only!"
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echo -n "Do you want to install new MBR into $disk? [Y] "
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read ok
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if [ "$ok" = Y -o "$ok" = y -o "$ok" = "" ]
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then
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installboot_nbsd -m "$disk" /usr/mdec/mbr >/dev/null
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fi
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fi
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rm temp_mbr_netbsd
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fi
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}
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# No options.
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while getopts '' opt; do usage; done
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shift `expr $OPTIND - 1`
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@ -323,13 +351,15 @@ echo " --- Step 4: Reinstall choice ------------------------------------------"
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echo "You have selected an existing MINIX 3 partition."
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echo "Type F for full installation (to overwrite entire partition)"
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echo "Type R for a reinstallation (existing /home will not be affected)"
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echo "Type B to reinstall/upgrade bootloader (no data affected)"
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echo ""
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echo -n "(F)ull or (R)einstall? [R] "
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echo -n "(F)ull, (R)einstall or (B)ootloader install? [R] "
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read conf
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case "$conf" in
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"") confirm="ok"; auto="r"; ;;
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[Rr]*) confirm="ok"; auto="r"; ;;
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[Ff]*) confirm="ok"; auto="" ;;
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[Bb]*) confirm="ok"; bootreinstall="ok" ;;
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esac
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else echo ""
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@ -340,6 +370,184 @@ echo " --- Step 4: Reinstall choice ------------------------------------------"
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done
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if [ "$bootreinstall" = "ok" ]
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then
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echo ""
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echo " --- Step 5: Reinstall bootloader ----------------------------------"
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echo ""
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echo "WARNING: This procedure uses your current /usr to store your /."
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echo "Once the procedure starts, it has to finish"
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echo "to restore your / partition. Please make sure it is not interrupted."
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echo ""
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echo -n "It's recommended to run fsck before you continue, run? [Y/n] "
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read ok
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if [ "$ok" = "y" -o "$ok" = "Y" -o "$ok" = "" ]
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then
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fsck.mfs -a "/dev/$root" >/dev/null
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fsck.mfs -a "/dev/$usr" >/dev/null
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fi
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# If there is no ELF stuff and not enough space after repartitioning,
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# user will fall into trouble. So at first copy new stuff.
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mount "/dev/$root" /mnt >/dev/null || exit
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# grep, stat, etc in chroot
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mount "/dev/$usr" /mnt/usr >/dev/null || exit
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cp -pf /bin/update_bootcfg /mnt/bin/ && \
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cp -pf /etc/boot.cfg.default /mnt/etc/ && \
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cp -pf /boot_monitor /mnt/ || exit
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if [ ! -d /mnt/boot/minix_default -o ! -r /mnt/boot/minix_default/kernel ]
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then
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if [ -r /mnt/boot.cfg ]
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then
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echo ""
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echo "There is no /boot/minix_default/, but /boot.cfg exists."
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echo -n "Do you want to copy minix_default from CD? [Y/n] "
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else
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echo ""
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echo -n "There is no /boot/minix_default/, do you want to copy it from CD? [Y/n] "
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fi
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read ok
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if [ "$ok" = "y" -o "$ok" = "Y" -o "$ok" = "" ]
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then
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if [ -e /mnt/boot/minix_default ]
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then
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echo "Old /boot/minix_default moved to /boot/minix_default_old"
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mv /mnt/boot/minix_default /mnt/boot/minix_default_old
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fi
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cp -rfp /boot/minix_default /mnt/boot/ || exit
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fi
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fi
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echo " * Updating /boot.cfg"
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chroot /mnt update_bootcfg
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umount /mnt/usr && umount /mnt || exit
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# Check if enough space for new boot
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let bootspace=`devsize /dev/$primary`-`devsize /dev/$root`-`devsize /dev/$home`-`devsize /dev/$usr` >/dev/null
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if [ $bootspace -lt $BOOTXXSECTS ]
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then
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echo ""
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echo "Root partition size will be reduced by up to 16Kb to fit new bootloader."
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echo "This is not a problem."
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free_space=`df /dev/$root | awk '{print $3}' | tail -n 1`
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# round 16 => 20
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if [ "$free_space" -le 20 ]
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then
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echo ""
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echo "Not enough space on /dev/$root, you need at least 20Kb to use new bootloader!"
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exit 1
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fi
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ROOTSECTS=`expr \`devsize /dev/$root\` - $BOOTXXSECTS + $bootspace`
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free_space=`df /dev/$usr | awk '{print $3}' | tail -n 1`
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required_space=`df /dev/$root | awk '{print $4}' | tail -n 1`
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if [ "$required_space" -gt "$free_space" ]
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then
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echo ""
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echo "You don't have enough free space on /dev/$usr to backup /dev/$root!"
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echo "${free_space}Kb available, ${required_space} required."
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exit 1
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fi
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mkdir /mnt/root && mkdir /mnt/usr || exit
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echo "Re-mounting your current / and /usr"
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mount "/dev/$root" /mnt/root || exit
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mount "/dev/$usr" /mnt/usr || exit
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mkdir /mnt/usr/tmp/root_backup || exit
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echo " * Copying / contents"
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cp -rfp /mnt/root/* /mnt/usr/tmp/root_backup
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if [ $? -ne 0 ]
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then
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echo ""
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echo "Failed to backup root partition, aborting!"
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rm -rf /mnt/usr/tmp/root_backup
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# umount shouldn't fail here, but if it will, next
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# "rm -rf" will serve for user's pleasure.
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umount /mnt/root >/dev/null || exit
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umount /mnt/usr >/dev/null || exit
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rm -rf /mnt/root /mnt/usr
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exit 1
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fi
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echo " * Copying done"
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umount /mnt/root
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umount /mnt/usr
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add_subpart=""
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minix_subparts=`echo -n "" | fdisk /dev/$primary | grep "MINIX" | wc -l`
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if [ "$minix_subparts" -gt 3 ]
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then
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echo ""
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echo "You have additional subpartition except /, /usr and /home."
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echo "Partition type will be set to MINIX (81), you can change it later using part."
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echo -n "Do you want to continue? [Y/n] "
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read ok
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[ "$ok" = "n" -o "$ok" = "N" ] && exit
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add_subpart="81:exist"
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fi
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echo " * Repartitioning"
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partition /dev/$primary $BOOTXXSECTS 81:${ROOTSECTS}* 81:exist 81:exist $add_subpart || exit
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echo " * mkfs on new /"
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mkfs.mfs "/dev/$root" || exit
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if [ $? -ne 0 ]
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then
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echo "Failed to repartition /dev/$primary"
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rmdir /mnt/root
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rmdir /mnt/usr
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exit 1
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fi
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mount "/dev/$usr" /mnt/usr || exit
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mount "/dev/$root" /mnt/root || exit
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echo " * Filling new / filesystem"
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mv /mnt/usr/tmp/root_backup/* /mnt/root/ || exit
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if [ $? -ne 0 ]
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then
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echo "Failed to copy old root data! It is in /tmp/root_backup/"
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fi
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rmdir /mnt/usr/tmp/root_backup/
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umount /mnt/root
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umount /mnt/usr
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fi
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check_mbr
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installboot_nbsd -f /dev/$primary /usr/mdec/bootxx_minixfs3 >/dev/null || exit 1
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if [ $? -ne 0 ]
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then
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echo "Warning: failed to remove /tmp/root_backup!"
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fi
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echo "New boot installed successfully! You can reboot now."
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exit
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fi
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rmdir $TMPMP
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nohome="0"
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@ -456,29 +664,7 @@ blocksizebytes="`expr $blocksize '*' 1024`"
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bootsectors=$BOOTXXSECTS
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# check for potential problems with old mbr.
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# space for bootxx has been checked earlier.
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minix_primaries=`echo -n "" | fdisk /dev/$primary | grep "MINIX" | wc -l`
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if [ "$minix_primaries" -gt 1 ]
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then
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# old mbr + bootxx will not work with several partitions of
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# the same type.
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disk=`echo -n "/dev/$primary" | sed 's/p[0-3]//'`
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dd if=/usr/mdec/mbr of=temp_mbr_netbsd bs=1 count=440 2>/dev/null
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dd if="$disk" bs=1 count=440 | cmp - temp_mbr_netbsd >/dev/null
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if [ "$?" -ne 0 ]
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then
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echo "Warning: you have MBR which doesn't support multiple MINIX 3 partitions!"
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echo "You will be able to boot from the first one only!"
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echo -n "Do you want to install new MBR into $disk? [Y] "
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read ok
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if [ "$ok" = Y -o "$ok" = y -o "$ok" = "" ]
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then
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installboot_nbsd -m "$disk" /usr/mdec/mbr >/dev/null
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fi
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fi
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rm temp_mbr_netbsd
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fi
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check_mbr
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echo "
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You have selected to (re)install MINIX 3 in the partition /dev/$primary.
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