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In the past it was not possible to install Ubuntu on a pure Btrfs file system (/ btrfs + swap), will it be possible for 12.04?

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up vote 8 down vote accepted

You have been able to install Ubuntu into btrfs since 10.10

See the following guides

https://help.ubuntu.com/community/btrfs

http://ubuntuforums.org/showthread.php?t=1389279

With that said, see the stability section on the wiki

You can boot a btrfs root (/boot) partition with grub2 (1.99), but the initrd has to be compressed with zlib (not lzo)

Looking as /etc/initramfs-tools/initramfs.conf, gzip appears to be the default, you should be good to go.

And from the ubuntu wiki page I gave you :

As of 11.04-beta1, it is possible to use only btrfs file systems with the caveat that grub _MUST_NOT_ be installed to the boot sector of the btrfs volume containing /boot.

So install Ubuntu 11.04 or higher, be sure to install grub to the MBR (this is the default behavior of the installer).

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Yes but only when using a ext4 /boot partition. I have no problems with btrfs - just a question. –  Paradiesstaub Mar 15 '12 at 20:23
    
@Paradiesstaub I thought that Natty fixed that (though I could be wrong - I'm still an EXT4 user) –  Oli Mar 15 '12 at 21:04
2  
I tried it. Its possible to install Ubuntu 12.04 on '/' btrfs and swap only. –  Paradiesstaub Mar 19 '12 at 22:40

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