[Tux3] Design note: Data flush and rename ordering

Thomas Bellman bellman at nsc.liu.se
Tue Mar 24 17:52:23 PDT 2009


Daniel Phillips wrote:

> This additional requirement for rename is unlikely to reduce write
> performance perceptably, because write/rename loads are relatively
> rare.
[...]
> Mass file writes such as cp -a or
> untar do not typically use the write/rename method.

cp -a and untar might not, but rsync does.  Thus, mass write/renames
are probably not *that* rare.  For instance, Gentoo uses rsync to
download its portage tree, and there are lots of small files in that.
And at my workplace we and our users often move large file trees
(several gigabytes or even terabytes) between fileservers using rsync.


	/Bellman

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