I'm debating using an external intent log on a new box that I'm about
to start working on, and I have a few questions.

1.  If I use an external log initially and decide that it was a
mistake, is there a way to move back to the internal log without
rebuilding the entire pool?
2.  What happens if the logging device fails completely?  Does this
damage anything else in the pool, other then potentially losing
in-flight transactions?
3.  What about corruption in the log?  Is it checksummed like the rest of ZFS?

Thanks.


Scott
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