Hello,
Yesterday, I realized the algorithm for nodatacow is broken, it can't
reliably detect whether a given extent is referenced by only one
snapshot.
Let me use the attached picture to describe the issue.
Figure (1) shows the initial tree structure. there is only one fs tree A.
Figure (2
On Wed, 2008-07-16 at 15:41 +0800, Yan Zheng wrote:
Hello,
Yesterday, I realized the algorithm for nodatacow is broken, it can't
reliably detect whether a given extent is referenced by only one
snapshot.
I had to change around nodatacow back in May because it was definitely
broken
