Data loss on converted linear LV to raid1.
A failed primary raid1 leg during initial resynchronization of an upconverted linear LV (e.g "lvconvert -m1 $LinearLV") could be replaced, thus losing the previous linear LV and any of its still recoverable data.
Any still recoverable data on the primary, previously linear leg is lost.
Reject repair of a raid1 with failed primary leg during initial synchronization.
A monitored raid1 LV is not silently repaired any more.
When repairing manually, a message is displayed that repair is only possible using --force thus enabling the user to do data recovery on any still partially readable primary leg.