An f2fs teardown

Posted Oct 11, 2012 9:03 UTC (Thu) by hthoma (subscriber, #4743)
Parent article: An f2fs teardown

> The block addresses are 32 bits so the total number of addressable bytes in the filesystem is at most 2^(32+12) bytes or 16 terabytes. This is probably not a limitation — for current flash hardware at least.

16 TB is not a limitation? OK, you can not buy a 16 TB SSD now, but you can buy one with 512 GB. That is only a factor of 32. And it will probably not take too long to close that gap.

So this sounds really a lot like: "640 kB of RAM is enough."

An f2fs teardown

Posted Oct 11, 2012 12:06 UTC (Thu) by cladisch (✭ supporter ✭, #50193) [Link]

As far as I can see, f2fs is primarily intended for less intelligent flash devices, like those in smartphones, where 16 TB indeed is enough for the forseeable future.

If there ever is a smartphone with 32 TB of flash storage, I'd guess that it will also have a flash controller as least as good as those in today's top-end SSDs, which aren't as bad with 'normal' file systems.