On Wed, Jun 12, 2019 at 02:36:55PM +0800, Qu Wenruo wrote:
> Commit 8dcddfa048de ("btrfs: Introduce new mount option usebackuproot to
> replace recovery") deprecates "recovery" mount option in 2016, and it
> has been 3 years, it should be OK to remove "recovery" mount option.
Well, that's what we never know if it's ok o not so the deprecated
options usually stay. Eg. subvolrootid is still there.
3 years might sound a like a long time but there are old kernels that
follow the stable branches so I'd rather derive the time to removal from
that. And eg 4.4 still has the 'recovery' option not among the
deprecated, same 4.9 and 4.14.
Since 4.19 it's deprecated so we'll have to wait until that is EOL,
Dec 2020.
