On Mon, Dec 21, 2015 at 01:18:22PM +0800, Anand Jain wrote: > > > >BTW, any good idea for btrfs to do such operation like > >enabling/disabling some minor features? Especially when it can be set on > >individual file/dirs. > > > >Features like incoming write time deduplication, is designed to be > >enabled/disabled for individual file/dirs, so it's not a quite good idea > >to use mount option to do it. > > > >Although some feature, like btrfs quota(qgroup), should be implemented > >by mount option though. > >I don't understand why qgroup is enabled/disabled by ioctl. :( > > > mount option won't persist across systems/computers unless > remembered by human.
So record the mount option you want persistent in the filesystem at mount time and don't turn it off until a "no-...." mount option is provided at mount time. Cheers, Dave. -- Dave Chinner da...@fromorbit.com -- To unsubscribe from this list: send the line "unsubscribe fstests" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
