[SOLVED] Is there a way to install Jaunty as ext4?

[inxygnuu]

This might sound dumb, and unstable, but is there currently a way to install Jaunty with ext4? I know you need GRUB 2, but from the cd is there an option?

[plun]

Nope you don't need Grub2 for non boot partitions.

I have one test partition for EXT4.

plun@plun:~$ sudo blkid
/dev/sda1: UUID="9E7864E67864BEA1" TYPE="ntfs" 
/dev/sda2: UUID="431b36fe-46dd-4ee6-94ce-ab65eabdc770" TYPE="ext3" 
/dev/sda3: UUID="1bd53d0e-a190-4358-a24f-cdea59941581" TYPE="ext4" 
/dev/sda4: UUID="ea60a35d-3a50-4b02-8eda-60da18ad08fd" TYPE="ext3" 
/dev/sdb1: SEC_TYPE="msdos" UUID="BABA-9F89" TYPE="vfat"

Info
http://ext4.wiki.kernel.org/index.php/Main_Page


Still a unsolved bug about blkid or vol_id for Ubuntu....but it works without any fixes, just to convert a partion and add it to fstab.

[inxygnuu]

well, it looks very unstable, so I am simply going to leave it alone for now.

[Technophobia]

The newest release of the Kernel included a stabilized ext4. I'm not sure what that exactly means, and if JJ will use it.

http://www.phoronix.com/scan.php?pag...item&px=Njk1Nw

[pressureman]

I just installed Jaunty on a spare laptop using ext4 as the root filesystem, and a separate ext3 /boot partition. I think messing about with both ext4 and grub2 simultaneously is tempting fate a little bit

Running ext4 as your root filesystem gets a bit fiddly with initramfs (which doesn't correctly identify the filesystem as ext4, and then fails to mount it as ext3 (if you have enabled extents or some other new ext4 filesystem feature)).

I needed to add a custom script in /etc/initramfs-tools/scripts/local-bottom:

#! /bin/sh
mount -t ext4 /dev/sda1 /root
mount -t ext4 /dev/disk/by-uuid/[ADD YOUR ROOT PARTITION UUID HERE] /root

If you're not using sda1 as your root partition, obviously replace it with what you are using. Then execute

sudo update-initramfs -u -k all

The kernel now has ext4 (and others) compiled in directly (no longer a module), so the FS support is there right from the start - it's just that the initramfs scripts try to mount it as ext3.

Note: you will not need the above custom script if you're not going to enable extents.

[inxygnuu]

Okay, I just got all of that, but I don't know how to move the /boot to another partition. I <3 BLEEDING EDGE

[Quikee]

Originally Posted by pressureman Running ext4 as your root filesystem gets a bit fiddly with initramfs (which doesn't correctly identify the filesystem as ext4, and then fails to mount it as ext3 (if you have enabled extents or some other new ext4 filesystem feature)).

I have solved this by adding "rootfstype=ext4" to boot options (manualy in grub but later in temporary in grub's "menu.lst").

[Quikee]

Originally Posted by pressureman Running ext4 as your root filesystem gets a bit fiddly with initramfs (which doesn't correctly identify the filesystem as ext4, and then fails to mount it as ext3 (if you have enabled extents or some other new ext4 filesystem feature)).

I have solved this by adding "rootfstype=ext4" to boot options (manualy in grub but later permanent in grub's "menu.lst").

[pressureman]

Originally Posted by inxygnuu Okay, I just got all of that, but I don't know how to move the /boot to another partition. I <3 BLEEDING EDGE

If you haven't already converted your root partition to ext4, or if you have converted it but not yet enabled extents, you should be able to use gparted to resize the partition, creating space to sneak in a small /boot partition, formatted as ext3. 200 MB should be plenty big enough.

Once you've created the /boot partition, mount it somewhere temporarily, copy the contents of your existing /boot directory onto the new /boot partition (wherever it's mounted), and update your /etc/fstab accordingly.

[pressureman]

Originally Posted by Quikee I have solved this by adding "rootfstype=ext4" to boot options (manualy in grub but later in temporary in grub's "menu.lst").

Perfect! A much more elegant solution than my suggestion. Thanks!

For anyone reading this who isn't quite sure what Quikee meant, edit your /boot/grub/menu.lst file (as root), find the "kopt" option, and append "rootfstype=ext4" to that line, eg.

# kopt=root=UUID=422cead6-da03-473f-a2dc-1a551da53d2f ro rootfstype=ext4

Then run "sudo update-grub".