Hi, I am using e4defrag to defrag running ext4 online. During running e4defrag, I am writing/reading data on file system. Is it safe to use e4defrag? I mean if power failure happens, is there any possibility of data loss or defragging file corruption? If there is possibility of defragging file corruption after power failure, can fsck fix it? Thank you very much. Peng -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html