Re: [PATCH 4/4] mdadm: Print version to stdout

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On Thu, Sep 28, 2023 at 5:53 PM Mariusz Tkaczyk
<mariusz.tkaczyk@xxxxxxxxxxxxxxx> wrote:
>
> On Wed, 27 Sep 2023 10:52:19 +0800
> Xiao Ni <xni@xxxxxxxxxx> wrote:
>
> > The version information is not error information. Print it
> > to stdout.
> >
> > Signed-off-by: Xiao Ni <xni@xxxxxxxxxx>
> > ---
> >  mdadm.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/mdadm.c b/mdadm.c
> > index 076b45e030b3..0b8854baf1aa 100644
> > --- a/mdadm.c
> > +++ b/mdadm.c
> > @@ -128,7 +128,7 @@ int main(int argc, char *argv[])
> >                       continue;
> >
> >               case 'V':
> > -                     fputs(Version, stderr);
> > +                     fputs(Version, stdout);
> >                       exit(0);
> >
> >               case 'v': c.verbose++;
>
> I agree with this change but...
> This one is risky for users. I can realize that some users may check that
> from stderr because it is how we implemented it many years ago.
>
> I remember that I removed calls to mdam --help from dracut in the past:
> https://github.com/mtkaczyk/dracut/commit/d3d37003dcecdf01f6ae0f4764d74cd035aade73#diff-f2466410e3aff8aeba95038d29b1652581c97d8d7d9feb4011d7b8bc103de1b0L64
>
> And I can see that it does redirection "2>&1". I think that in general this kind
> of problem is handled this way, so overall I ready to take the risk of changing
> it to stdout by default.
>
> Reviewed-by: Mariusz Tkaczyk <mariusz.tkaczyk@xxxxxxxxxxxxxxx>
>
> Thanks,
> Mariusz
>

Hi Mariusz

Sorry for being late to respond. I just came back from holiday. Thanks
for the suggestion. It's right that it's risky to do so. I'll drop it
in the next version.

Regards
Xiao





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