Re: FFSv1 (UFS1) vs FFSv2 (UFS2)

[tlaronde%polynum.com@localhost]

Hello,

On Wed, Jul 03, 2019 at 09:26:35PM -0000, Michael van Elst wrote:
> tlaronde%polynum.com@localhost writes:
> 
> >I guess that my uncertainty about FFSv1 vs FFSv2 comes partly from this
> >confusion between fdisk(8) vs gpt(8) and the 32bits limit and the 
> >mention of > 1To in newfs(8) man page.
> 
> FFSv1 also has a 32bit (or rather 31bit) limit. Since it counts fragments,
> not physical disk blocks, the effective limit for the filesystem size
> varies between 1TB (512byte fragments) and 128TB (64kByte fragments).

That's an important information! This also means that, using the default
values, FFSv1 can handle 8TB (block size 32KB, and fragment size
4KB are the defaults for disk size >= 128 GB).

Thank you!
-- 
        Thierry Laronde <tlaronde +AT+ polynum +dot+ com>
                     http://www.kergis.com/
                       http://www.sbfa.fr/
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