Tim Woodall wrote: > On Wed, 19 Oct 2022, Lucas Castro wrote: > > > The array must be identified somehow, in mdadm, array is by uuid! > > > > And I have two disks, which have the same uuid but are not part of the > same array. > > How do I tell mdadm that they aren't part of the same array? > > I can't believe I'm the only person who has cloned a machine by breaking > a raid1 array. > > Or someone who has used dd to clone a disk that they then want to mount > in parallel with the original
mdadm --zero-superblock --force can be used, carefully. You will need to re-add the disk to the new array and let it sync. -dsr-
