Creating a btrfs file system using btrfs-progs-0.20.rc1.20130308git704a08c-1.fc19, and either kernel 3.6.10-4.fc18 or 3.9.0-0.rc3.git0.3.fc19, makes a file system that cannot be mounted by kernel 3.6.10-4.fc18. It can be mounted by kernel 3.8.4. I haven't tested any other 3.8, or any 3.7 kernels. Is this expected? dmesg reports: [ 300.014764] btrfs: disk space caching is enabled [ 300.024137] BTRFS: couldn't mount because of unsupported optional features (40). [ 300.034148] btrfs: open_ctree failed Chris Murphy-- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
