Hi everyone, I'm trying to learn about btrfs and the various trees and data structures. To that end I have been trying to create a small RAID 1 filesystem (with 2 10MB devices), and it appears mkfs.btrfs does not like this. (output follows # ./mkfs.btrfs -d raid1 -m raid1 -b 10485760 /dev/ubdc /dev/ubdb SMALL VOLUME: forcing mixed metadata/data groups WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL WARNING! - see http://btrfs.wiki.kernel.org before using Created a data/metadata chunk of size 1048576 adding device /dev/ubdb id 2 mkfs.btrfs: mkfs.c:221: create_one_raid_group: Assertion `!(ret)' failed. Aborted However if I don't set the raid1 options, I can create a 20 MB RAID0 filesystem, or I can also create a 10 MB filesystem on one disk without any errors. Large disk devices also seem to work as RAID1 or RAID0) I'm really just trying to start to dig in and understand the code, but I figured a small filesystem would be easier to walk. I might just mess with a single disk for now, but I would appreciate any advice. Thanks, Rohit -- 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
