RE: A few mdadm questions

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On Friday November 12, bugzilla@xxxxxxxxxxxxxxxx wrote:
> First, stop using the old raid tools.  Use mdadm only!  mdadm would not have
> allowed your error to occur.

I'm afraid this isn't correct, though the rest of Guy's advice is very
good (thanks Guy!).

  mdadm --remove
does exactly the same thing as
  raidhotremove

It is the kernel that should (and does) stop you from hot-removing a
device that is working and active.  So I'm not quite sure what
happened to Robert...

Robert: it is always useful to provide specific with the output of 
    cat /proc/mdstat
and
    mdadm -D /dev/mdX

This avoids possible confusion over terminology.

NeilBrown
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