On a fresh 6.7 installation, mount(8) shows 'type ffs'. Is there any way
to figure out the version number?
On 2020-05-27 22:54, Otto Moerbeek wrote:
> I got some questions on ffs2 in 6.7. This is to set the record
> straight, feel free to share on forums like reddit that I do not read,
> let alone post on.
>
> 1. Using 6.7, the *installer* defaults to ffs2 for new filesystems for
> almost all platforms.
>
> 2. Using 6.7, a newfs "by hand" still gets you ffs1, unless you use the
> -O2 flag or the partition > 1TB.
>
> 3. In -current, newfs defaults to ffs2 for all platforms.
>
> 4. ffs2 is faster than ffs2 when creating filesystems and almost always when
> fscking them.
>
> 5. ffs2 uses 64-bit timestamps and block numbers. So it handles dates
> after 2038 and much larger partitions. This does not mean that super
> large partitions are always a good idea, there are still drawbacks:
> e.g. they do need lots of memory to fsck, especially when many inodes
> are in use.
>
> 6. I have no plans for writing a conversion tool. You can convert an
> ffs1 filesystem to ffs2 using single user mode: umount; dump; newfs
> -O2; restore; mount. Or see it as an opportunity to reinstall and
> get a nice clean system without cruft collected over the years.
>
> Hope this help in clearing up some of questions people have,
>
> -Otto
>
>
>
>
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