On Tue, 19 Oct 2010, Cindy Swearingen wrote:
unless you use copies=2 or 3, in which case your data is still safe
for those datasets that have this option set.
This advice is a little too optimistic. Increasing the copies property
value on datasets might help in some failure scenarios, but probably not
in more catastrophic failures, such as multiple device or hardware
failures.
It is 100% too optimistic. The copies option only duplicates the user
data. While zfs already duplicates the metadata (regardless of copies
setting), it is not designed to function if a vdev fails.
Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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