Hi, it has been a while since there has been any activity against this bug. it is marked as grave, this means that it is Release Critical for Stretch.
I have just run Cyril's md-mirror-resync-broken-v2.sh script on a machine running stretch rc1 (Linux debian 4.4.0-2amd64 #1 SMP Debian 4.8.15-2 (2017-01-04) x86_64 GNU/Linux) and this reports Ok, bug not found I guess that means that the regression of this bug is now fixed... Thanks /Andy
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