I created a btrfs RAID-10 array across 4-drives, mkfs.btrfs -L TEST -m raid10 -d raid10 /dev/sda /dev/sdb /dev/sdc /dev/sdd btrfs-show Label: TEST uuid: 2ac85206-2d88-47d7-a1e7-a93d80b199f8 Total devices 4 FS bytes used 28.00KB devid 1 size 931.51GB used 2.03GB path /dev/sda devid 2 size 931.51GB used 2.01GB path /dev/sdb devid 4 size 931.51GB used 2.01GB path /dev/sdd devid 3 size 931.51GB used 2.01GB path /dev/sdc @ mount, mount /dev/sda /mnt df -H | grep /dev/sda /dev/sda 4.1T 29k 4.1T 1% /mnt for RAID-10 across 4-drives, shouldn't the reported/available size be 1/2x4TB ~ 2TB? e.g., using mdadm to build a RAID-10 array across the same drives, mdadm -v --create /dev/md0 --level=raid10 --raid-devices=4 /dev/sd[abcd]1 pvcreate /dev/md0 pvs PV VG Fmt Attr PSize PFree /dev/md0 lvm2 -- 1.82T 1.82T is the difference in available array space real, an artifact, or a misunderstanding on my part? thanks. -- 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
