Ideas for supporting shingled magnetic recording (SMR)

there were people poining this out then, but code talks and writing a new filesystem is sexy, writing a new management tool to use the existing infrastructure isn't.

As for the new filesystem being deployed everywhere, people are _extremely_ conservative about their storage. Even if btrfs had been finished on the original (insanely optimistic) schedule, it still would just be getting traction now.

Look how reluctant people are to move off of ext3 to ext4/xfs, both of which have much longer track records.