On 6/9/21 2:47 PM, Bart Van Assche wrote:
On 6/9/21 11:30 AM, Matthew Wilcox wrote:
maybe you should read the paper.
" Thiscomparison demonstrates that using F2FS, a flash-friendly file
sys-tem, does not mitigate the wear-out problem, except inasmuch asit
inadvertently rate limitsallI/O to the device"
It seems like my email was not clear enough? What I tried to make clear
is that I think that there is no way to solve the flash wear issue with
the traditional block interface. I think that F2FS in combination with
the zone interface is an effective solution.
What is also relevant in this context is that the "Flash drive lifespan
is a problem" paper was published in 2017. I think that the first
commercial SSDs with a zone interface became available at a later time
(summer of 2020?).
Bart.
Just to address the zone interface support, it unfortunately takes a very long
time to make it down into the world of embedded parts (emmc is super common and
very primitive for example). UFS parts are in higher end devices, have not had a
chance to look at what they offer.
Ric
