On Mon, Nov 30, 2009 at 11:03:07PM -0700, Neil Perrin wrote:
> A write made through the ZPL (zfs_write()) will be broken into transactions
> that contain at most 128KB user data. So a large write could well be split
> across transaction groups, and thus committed separately. 

That answers my exact question; thanks!

And Richard, thanks, too. Sorry that my question wasn't stated clearly
enough to avoid causing confusion about whether I asked about the timing
of durability vs. the atomicity of writes with respect to failures.

-- 
Chris Frost
http://www.frostnet.net/chris/
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