Rockfloat Howto: Linux - reiserfs setup


root# cd /usr/src/2.4.7
root# make menuconfig

make sure "prompt for development and/or incomplete code..." is checked under: "code maturity level options"

go to filesystems.. and put shift + y into the reiser box // we want it "compiled in", not "a module of" the kernel

exit and save

3. Compile your new kernel


root# make dep && make bzImage && make modules && make modules_install

4. Install your new kernel

cd to /boot and take note of the file /boot/vmlinuz, this is your current kernel


cp /usr/src/linux-2.4.7-10/arch/i386/boot/bzImage /boot/vmlinuz-2.4.7-10.reiser
cp vmlinuz-2.4.7-10.reiser /boot/System.map

5. add another entry boot entry into /etc/lilo.conf, here is an example lilo.conf (note the second image= stuff):


prompt
timeout=100
default=linux-reiser
boot=/dev/hda
map=/boot/map
install=/boot/boot.b
message=/boot/message

image=/boot/vmlinuz-2.4.7-10
    label=linux-stock
    read-only
    root=/dev/hda3

image=/boot/vmlinuz-2.4.7-10.reiser
    label=linux-reiser
    read-only
    root=/dev/hda3

6. Update your master boot record

run lilo to update the mbr with /boot and /etc/lilo.conf


root# lilo

7. just to be sure, resolve any dependancies


root# depmod -a 2.4.7-10

8. Finish up

cross fingers and reboot :)

9. Setup any additional reiser dependancies

upgrade to at least lilo 26.1


root# rpm -ivh rpm-26.2.rpm

10. Prepare your partitions

say we have this fdisk -l


hda1 = /boot
hda2 = swap
hda3 = /

hdb = clean
hdc = clean

use fdisk to add partitions hdb1 and hdc1 to hdb and hdc respectively

11. Format the new partition(s) with reiserfs


root# mkreiserfs -h r5 /dev/hdb1
root# mkreiserfs -h r5 /dev/hdc1
root# mount -t reiserfs /dev/hdb1 /hdb
root# mount -t reiserfs /dev/hdc1 /hdc

12. Update /etc/fstab

make your /etc/fstab look like this:


/dev/hda1      /boot          ext2          defaults                1 1
/dev/hda2      swap           swap          defaults                0 0
#/dev/hda3     /              ext2          defaults                0 0
/dev/hdb1      /hdb           reiserfs      defaults                1 1
/dev/hdc1      /              reiserfs      defaults                1 1
none           /dev/pts       devpts        gid=5,mode=620          0 0
none           /proc          proc          defaults                0 0
none           /dev/shm       tmpfs         defaults                0 0
/dev/cdrom     /mnt/cdrom     iso9660       noauto,owner,kudzu,ro   0 0
/dev/fd0       /mnt/floppy    auto          noauto,owner,kudzu      0 0

13. Now that /dev/hdc1 is ready to be root we need to update lilo again

Make /etc/lilo.conf look like this:


prompt
timeout=50
default=linux
boot=/dev/hda
map=/boot/map
install=/boot/boot.b
message=/boot/message
linear

image=/boot/vmlinuz-2.4.7-10
    label=linux
    initrd=/boot/initrd-2.4.7-10.img
    read-only
    root=/dev/hdc1

14. Update the master boot record

Remember to run lilo -v to make sure you have lilo 26.1 or greater


root# lilo

15. Copy the entire system to the temporary root partition


cp -ax / /hdc

16. We are now ready to boot to the temporary root partition

reboot when your sure all of the following happened:

17. hope you don't get a kernel panic

18. upon bootup, mtab will show:


/dev/hda1   /boot    ext2                       0 0
/dev/hdb1   /hdb     reiserfs                   0 0
/dev/hdc1   /        reiserfs                   0 0
none        /proc    proc  rw                   0 0
none        /dev/pts devpts rw,gid=5,mode=620   0 0
none        /dev/shm tmpfs rw                   0 0

19. now you need to make hda3 (the old root) reiserfs


root# mkreiserfs -h r5 /dev/hda3
root# mount -t reiserfs /dev/hda3 /hda

20. Copy the sytem back to the normal place

Now that /dev/hda3 is reiserfs, you can copy the system back onto it


root# cd /
root# cp -ax * /hda

21. Edit /etc/fstab yet again

Make it look like this:


/dev/hda1      /boot          ext2        defaults                1 1
/dev/hda2      swap           swap        defaults                0 0
/dev/hda3      /              reiserfs    defaults                0 0
/dev/hdb1      /hdb           reiserfs    defaults                1 1
/dev/hdc1      /hdc           reiserfs    defaults                1 1
none           /dev/pts       devpts      gid=5,mode=620          0 0
none           /proc          proc        defaults                0 0
none           /dev/shm       tmpfs       defaults                0 0
/dev/cdrom     /mnt/cdrom     iso9660     noauto,owner,kudzu,ro   0 0
/dev/fd0       /mnt/floppy    auto        noauto,owner,kudzu      0 0

22. Edit /etc/lilo.conf

Update lilo.conf telling it to boot from your shiny new reiser root partition:


prompt
timeout=50
default=linux
boot=/dev/hda
map=/boot/map
install=/boot/boot.b
message=/boot/message
linear

image=/boot/vmlinuz-2.4.7-10
        label=linux
        initrd=/boot/initrd-2.4.7-10.img
        read-only
        root=/dev/hda3

23. now you gotta get /boot on reiser


root# mkdir /boot_good
root# cp -ax /boot /boot_good
root# ps -aux | grep klogd
--> kill *whatever the pid of klogd is
root# umount /boot
root# mkreiserfs -r5 /dev/hda1
root# mount -t reiserfs /dev/hda1 /boot
root# cp -ax /boot_good /boot

24. edit fstab, changing the filetype of /boot from ext2 to reiserfs

25. DO NOT REBOOT UNTIL THE NEXT STEP IS COMPLETE.. OTHERWISE YOUR SCREWED

Update the master boot record once again with the new lilo config:


root# lilo

26. reboot and now you got everything on reiser, including root and boot

Congrats, hopefully your now looking at a system with both /root and /boot on reiserfs

Well done, you deserve coffee and a pop tart

Changelog: Date	Description
10/20/2002 @15:00	Initial creation

Disclaimer:
This page is not endorsed by gentoo.org or any other cool cats. Any information provided in this document is to be used at your own risk.

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Linux - reiserfs setup

1. install distro (redhat 7.2 for this example)

2. Compile reiser support into the kernel, 7.2: