Hello, I''ve run "btrfs fi defrag /nix", a directory with only three subdirectories. One of them, "/nix/store" has lots of contents. I expected the operation to last very short, because I thought it was not recursive. But for what I see in btrfs_root_defrag, it looks like it''s recursive. And it takes long. Additionally, defragmenting on a directory ignores the ''-clzo'' kind of compression settings. And I wonder... as it works recursively, will it *uncompress* all that big amount of data I have there in lots of files? All that data has been filled with a "compress=lzo" mount option from long ago. Additionally, ''btrfs fi defrag <directory>'' seems to require root permisions, while ''btrfs fi defrag <file>'' does not, only file ownership (or writing permision). Is this on purpose? Regards, Lluís. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html