On 12/21/23 21:37, Christoph Hellwig wrote:
On Fri, Dec 22, 2023 at 05:13:43AM +0000, Matthew Wilcox wrote:
It clearly solves a problem (and the one I think it's solving is the
size of the FTL map). But I can't see why we should stop working on it,
just because not all drive manufacturers want to support it.
I don't think it is drive vendors. It is is the SSD divisions which
all pretty much love it (for certain use cases) vs the UFS/eMMC
divisions which tends to often be fearful and less knowledgeable (to
say it nicely) no matter what vendor you're talking to.
Hi Christoph,
If there is a significant number of 4 KiB writes in a workload (e.g.
filesystem metadata writes), and the logical block size is increased from
4 KiB to 16 KiB, this will increase write amplification no matter how the
SSD storage controller has been designed, isn't it? Is there perhaps
something that I'm misunderstanding?
Thanks,
Bart.
