On Thu, Feb 20, 2014 at 01:32:34PM -0500, Josef Bacik wrote: > > Yes for 3), we may also export the information through the > > existing ioctls if possible (eg. IOC_FS_INFO). > > > > For _right now_ I'd say just not do the raid56 stuff if we don't > notice any raid56 chunks from the normal load_space_info, and then if > there are raid56 we try and run the tree search ioctl and notice if we > get back EPERM or whatever you get when you don't have permissions. > Then just spit out as much information that you can about the fs with > a little note at the bottom that available calculation isn't 100% and > you need to run as root if you want that info.
Works for me. > Then what we could do is add another flag type for the existing > SPACE_INFO ioctl to spit out the information you need about the > raid5/6 chunks and then just test for those flags and make the > adjustment necessary. This way we avoid adding yet another ioctl and > stuff will still work nicely for old kernels that don't have the > updated ioctl. Thanks, Agreed. Extending SPACE_INFO looks suitable for this. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
