btrfs has finally found its way into the latest kernels, is it considered stable and safe enough to use in a home backup scenario (as an alternative to zfs) ? 
Is btrfs stable enough for home usage?
linux;filesystems;btrfs
No, and while fuse-ZFS is the bee's knees (having tried it) I wouldn't use it either.  It's not a stability issue - both are fairly stable - but one of code maturity.