On Wed, May 23, 2018 at 12:22:39PM -0700, Shaohua Li wrote: > I don't know what is changed in the refcount, such raid5 change has attempted > before and didn't work. 0 for the stripe count is a valid usage and we do > inc-from-zero in several places. Nothing much has changed with refcount; and the above does indeed still appear to be an issue. Thanks for confirming.