On Mon, Feb 25, 2013 at 07:11:13PM +0000, Edward Ned Harvey (blu) wrote: > All of this distinction between raid0, mirroring, raid10, in context of > btrfs, is irrelevant, because it's true for straight-up traditional RAID, > which is not what's happening in btrfs or zfs.
You are incorrect about what is happening. > In btrfs and zfs, it goes like this: > mirror dev0 dev1 dev2 > or > raid1 dev0 dev1 dev2 > This makes a 3-way mirror. Total usable capacity of a single disk, triple > redundant. This is incorrect for btrfs. Assuming 3 identical devices, btrfs raid1 creates a 2-way replication with a capacity of 1.5x a single device. http://permalink.gmane.org/gmane.comp.file-systems.btrfs/17183 http://www.spinics.net/lists/linux-btrfs/msg15867.html -dsr- _______________________________________________ Discuss mailing list Discuss@blu.org http://lists.blu.org/mailman/listinfo/discuss