I'm not really understanding the use case. Is this for one time copy of a Btrfs file system or a need to keep the copies in sync? Because this sounds like a better fit for rsync, btrfs send/receive, or drdb. The part especially where I'm getting confused is where you say "start copying blocks of sda to sdc" and yet you refer to "file handler" and "mounting the new copy". I can't really tell if this is strictly a block copy e.g. using dd, or if you're using cp/rsync -a or what. And then, why do you need to mount the copy? Chris Murphy -- 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
