ses device over T-SGPIO

Alan Somers asomers at freebsd.org
Fri Jan 29 16:51:45 UTC 2021


I've never used any tool with SGPIO.  The hardware simply isn't powerful
enough to be useful.  sesutil works, in theory, to control the LEDs.  But
it's of limited usefulness since there's no way to tell which drives are
installed in which slots.
-Alan

On Fri, Jan 29, 2021 at 9:44 AM Slawa Olhovchenkov <slw at zxy.spb.ru> wrote:

> On Fri, Jan 29, 2021 at 09:22:47AM -0700, Alan Somers wrote:
>
> > The short story is: SGPIO sucks.  It doesn't detect drive presence, much
> > less provide physical path information.  The only thing you can do with
> it
> > is control the fault LEDs.  But doing that usefully requires you to have
> > some extra source of information about what drives are installed in what
> > slots.  Basically, you need to track that kind of information offline.
> > sesutil ought to be able to control the LEDs, at least, but I've never
> > personally used it with SGPIO.
>
> What tool you used with SGPIO?
> What additional drivers need?
>
> > On Fri, Jan 29, 2021 at 9:02 AM Slawa Olhovchenkov <slw at zxy.spb.ru>
> wrote:
> >
> > > I am have Supermicro MB X9DBU-iF connected to bcakplane BPN-SAS-825TQ
> > > by T-SGPIO cables. sesutil don't found any SES device.
> > >
> > > Is this posible to have control to this backplane?
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