On 12-18-13 10:46:29 Anand Jain wrote: > On 12/18/2013 10:03 AM, Garry T. Williams wrote: > > I have been using btrfs for my /home partition on my home machine for > > a few years now. I created the file system RAID1 using two disk > > partitions. Recently I noticed btrfs fi df shows extra Data, System, > > and Metadata allocations. And btrfs fi show indicates extra > > allocations on one of my disk drives accounting for the 20 MiB > > allocation in the df display. > > this is a known bug in mkfs.btrfs, the workaround for now is > to run balance on FS having some data. so that unused group- > profile will go away. Thanks. garry@vfr$ sudo btrfs balance start /home Done, had to relocate 50 out of 50 chunks garry@vfr$ sudo btrfs filesystem df /home Data, RAID1: total=22.00GiB, used=21.02GiB System, RAID1: total=32.00MiB, used=12.00KiB System, single: total=4.00MiB, used=0.00 Metadata, RAID1: total=1.00GiB, used=419.60MiB Hmmm. Well, it's better, but the extra allocation for System is baffling. I believe that this happened sometime after creating the file system. Also balance on a RAID1 file system with exactly two drives doesn't make much sense to me. Why would any "chunks" have to be relocated? I'm clearly missing something here. -- Garry T. Williams -- 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