Comment 5 for bug 750209

Got this problem after upgrading to Natty and installing all recent updates: fsck is run on every boot, fscking 1TB btrfs volume takes 52 min. As a temporary solution I have disabled btrfs partition in fstab and I mount it manually. Partitions I am using:

/dev/sdb1 on / type ext4 (rw,errors=remount-ro,commit=0)
/dev/sda1 on /mnt/disk1 type btrfs (rw)

btrfsck results attached.