Re: Plans for hot-adding and removing mirrors?

[MOLNAR Ingo]

On Tue, 3 Nov 1998, Stephen C. Tweedie wrote:

> Ingo, there's one thing you could add which would be less simple, but
> would be impressive as anything: dynamic raid1-style mirroring on the
> disk to be replaced.  Tell the kernel to start removing an existing

this could be done cleanly by allowing the number of active disks to be
changed. This way it's just a normal tunable parameter, and the kernel
automatically picks a spare if there are less active disks than allowed.
Later on one can remove the old disk, and decrease the number of active
disks.

> That way, we can remove any disk from the array with no loss of
> redundancy at any point in time.

yep.

-- mingo