[OpenIndiana-discuss] Illumos UFS vs FreeBSD UFS?

[Chris]

On 2021-01-22 23:17, Chris wrote:
> On 2021-01-22 22:58, Hung Nguyen Gia via openindiana-discuss wrote:
>> Are they compatible? Could I use UFS for data exchange purpose?
>> 
>> UFS is available on all BSDs, including one doesn't support ZFS. So it's a 
>> better
>> portable FS than ZFS.
>> 
>> But I'm a bit pessimistic, because each BSD's UFS is different to the 
>> other. e.g:
>> FreeBSD's UFS2 doesn't mountable under DragonflyBSD, which only supports 
>> UFS1.
> FWIW Dragonfly was forked to show off the hammer filesystem he created. As 
> such,
> not much interest in keeping ffs in sync.
> Truth is; ffs was created by BSD. Anyway. I'm betting the differences, if 
> any, are
> minimal. It would be trivial to experiment on a couple USB sticks if you 
> don't have
> a couple spare platters.
> 
> Good question. Glad you brought it up.
>> 
>> So I don't expect much.
>> 
>> BTW, our UFS is UFS2 or UFS1 or something else?
> _technically_ it's ffs v ffs2. Hope that helps. :-)
Hmm... well the man pages are not forthcoming on this.
Well, as I remember the early days, it was initially called
ffs -- Fast File System. The updates garnered the title ffs2.
I'll need to dig into my archives.

--Chris
> 
>> 
>> Please let me know. Thanks.
>> 

-- 
~10yrs a FreeBSD maintainer of ~160 ports
~40yrs of UNIX