[jabl]

> They made their FFS 64-bit.

What does this mean? 64-bit inode numbers? 64-bit timestamps? Something else?

> Also they removed softupdates,

Shame in a way, I remember reading McKusick's paper and being impressed. But I guess it's the antithesis of batching, which turned out to be more important for performance than avoiding the extra I/O due to journalling. Also the implementation was AFAIU fearsomely subtle and tricky.

[volkadav]

https://unixgeeks.net/posts/2022/10/check-for-openbsd-ffs-fi... may be helpful. tl;dr - timestamps and blocknumbers are 64b in FFS2, intro'd in 4.2 and made the default (more or less) in 6.7

[ByQuyzzy]

Read the manual page, I’m not going to type it all in here.