Re: Thin provisioning & arrays

Matthew Wilcox
2008-11-10T13:30:13Z

On Mon, Nov 10, 2008 at 10:59:49AM +0100, David Woodhouse wrote:
> Storage devices are complex enough that they _already_ exhibit behaviour
> which is fairly much non-deterministic in a number of ways. Especially
> if we're talking about SSDs or large arrays, rather than just disks.

If anything, SSDs are more deterministic than rotating storage.
Variable numbers of sectors per track, unpredictable sector remapping,
track re-reads due to errors during reads ... SSDs seem like a real
improvement.

--
Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."