On Mon, 31 Mar 2014 19:45:27 +0000 (UTC), Duncan wrote:

> Hopefully, none of those commands included btrfsck --repair

... Woops...

Fortunately, it doesn't seem to have changed anything.

> That goes double if you're running raid5/6 mode

For the record, I've essentially just put Btrfs on 1 block device
with no special RAID structuring (I suppose that would be, in
your parlance, `single mode').

For completeness, this is the actual structure:

  Raw disk 
    |
    +-> MSDOS partition
          |
          +-> LVM2 logical volume
                |
                +-> LUKS dm-crypt device
                      |
                      +-> Btrfs

I apologize if that ASCII art fails to render properly on your end.

> I'd actually put more faith in the btrfs balance command...
> Btrfs scrub is another alternative

I suppose, then, that my ultimate plan of action is thus:

  * Back up important data.

  * Give `btrfs scrub' a try.

  * Give `btrfs balance' a try.

  * Rebuild the file system if necessary.

> or if you're running a mixed-data/metadata chunk filesystem, the
> default for filesystems under a gig, which further defaults to
> dup mode if on a single device

Just as an aside, I find it odd that the default for such a small
system would be to duplicate user data.

--------

Thanks for your insights!
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