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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

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
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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