The create RAID1 example illustrates my question, at: https://btrfs.wiki.kernel.org/index.php/UseCases#How_do_I_create_a_RAID1_mirror_in_Btrfs.3F It shows: mkfs.btrfs -m raid1 -d raid1 /dev/sda1 /dev/sdb1 will result in: btrfs fi df /mount Data, RAID1: total=1.00GB, used=128.00KB Data: total=8.00MB, used=0.00 System, RAID1: total=8.00MB, used=4.00KB System: total=4.00MB, used=0.00 Metadata, RAID1: total=1.00GB, used=24.00KB Metadata: total=8.00MB, used=0.00 What's the 8MB, System 4MB, and Metadata 8MB areas that appear not to be redundant? I'm seeing these small areas on my own RAID1, but using the example for simplicity. I'm sure it has to be OK those spaces aren't redundant, but I don't get what could be there that wouldn't be critical... -- 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
