On Wed, Aug 07, 2013 at 04:51:46PM -0400, Josef Bacik wrote:
> Not possible, this will break other things as subvolumes have their own inode
> space, it will confuse applications that get multiples of an inode number for
> different devices with the same st_dev.  Each subvolume has it's own anonymous
> dev to segregate things.  Thanks,

Yes, it's the same old issue of btrfs volumes misbehaving, and the
solution is still the same as 5 years ago: make sure each subvolume
has it's own sb, vfsmount and gets automounted, similar to what nfs4
does for this case.
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