Re: git: 62a149bf6219 - main - Add new rc: machine_id to generate /etc/machine-id

On Mon, Jan 9, 2023 at 6:40 AM Matteo Riondato <matteo@freebsd.org> wrote:
>
> On 2022-12-24 at 03:39 EST, Tobias C. Berner <tcberner@freebsd.org> wrote:
>
> >Moin moin
> >
> >I think it tries to solve the same problem of giving the machine a unique id.
> >
> >From the linux man page [1]
> >
> >       The machine ID does not change based on local or network
> >       configuration or when hardware is replaced. Due to this and its
> >       greater length, it is a more useful replacement for the
> >       gethostid(3) call that POSIX specifies.
> >
>
> Does this make or should it make hostid obsolete?
I hope not, since the NFSv4 client uses /etc/hostid.

> If yes, then changes are needed to deorbit hostid. If not, why not?
If this is somehow a better algorithm than the one used by uuidgen(1)
then I would prefer seeing that utility improved instead of a new one
being added.

If software needs to acquire the host uuid, the code can simply
get the sysctl kern.hostuuid.

Unless there is a really good reason to have this one in the
system as well as uuidgen(1), I'd suggest you revert this commit.

rick

>
> Thanks,
> Matteo
>
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