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I installed Ubuntu 13.10 on btrfs and the installer created the following fstab:

UUID=0eff8daf-5924-4a1f-922c-ec82ec594dc0 / btrfs defaults,subvol=@ 0 0
UUID=0eff8daf-5924-4a1f-922c-ec82ec594dc0 /home btrfs defaults,subvol=@home 0 0 UUID=babcf82e-ec47-4e02-b73a-8eed7b51908f none swap sw 0 0

If I enable compression on / and /home by adding 'compression=lzo' like this:

btrfs defaults,compression=lzo,subvol=@ 0 0

will the system boot?

It says here: https://help.ubuntu.com/community/btrfs#Adding_Filesystem_Compression

"NOTE: Grub2 in 11.04 can't read lzo compressed root so you'll need a /boot partition to use it."

But what about grub2 in 13.10?

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2 Answers 2

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Yes, you can boot with compression on in a root btrfs filesystem.

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This was fixed in Ubuntu 12.04 "Precise Pangolin", see bug #727535 on Launchpad.

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