On Sun, 19 Feb 2006 11:42:53 +0800, Ron and Jenny Hawkins <[EMAIL PROTECTED]> 
wrote:
>
> For Copy On Write the original data will be copied to a backing location if
> it is updated. This may be a shared pool of space or a dedicated backing
> volume. For Instant Split the data is copied under the covers after the
> split, and the storage updates the pointers when data moves from source to
> targets.
>
I think I understand CoW.  Instant Split is new to me.  So a couple
questions:

o With Instant Split, what happens if some other process attempts to
  update a block before the copy is complete?

o How does this behavior differ from that of CoW?

-- gil
--
StorageTek
INFORMATION made POWERFUL

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