RE: [PATCH V4 2/2] aacraid: remove wildcard for series 9 controllers

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> -----Original Message-----
> From: James Bottomley [mailto:James.Bottomley@xxxxxxxxxxxxxxxxxxxxx]
> Sent: Thursday, September 08, 2016 5:38 PM
> To: Scott Benesh; James Bottomley; Don Brace; Martin K. Petersen
> Cc: Viswas G; Mahesh Rajashekhara; hch@xxxxxxxxxxxxx; Scott Teel; Kevin
> Barnett; Justin Lindley; elliott@xxxxxxx; linux-scsi@xxxxxxxxxxxxxxx
> Subject: RE: [PATCH V4 2/2] aacraid: remove wildcard for series 9 controllers
> 
> EXTERNAL EMAIL
> 
> 
> On September 8, 2016 2:33:52 PM EDT, Scott Benesh
> <scott.benesh@xxxxxxxxxxxxx> wrote:
> >>
> >> On Thu, 2016-09-08 at 18:15 +0000, Don Brace wrote:
> >> > > > -    { 0x9005, 0x028f, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 65 }, /*
> >> > > > Adaptec PMC
> >> > > > Series 9 */
> >> > > >
> >> > > > How are people that load aacraid in their initrd going to boot
> >> > > > after this?
> >> > > >
> >> > > > --
> >> > > > Martin K. Petersen      Oracle Linux Engineering
> >> > >
> >> > > I updated smartpqi/Kconfig and added
> >Documentation/scsi/smartpqi.txt
> >> > > to inform users of the need to configure the smartpqi driver
> >moving
> >> > > forward for aacraid Series 9 controllers.
> >> > >
> >> > > Hope this helps.
> >>
> >> That's not going to be enough: this ID has been in the aacriad driver
> >since
> >> 2011.  That means anyone who finally gets hold of one of these new
> >cards
> >> but uses a distro that doesn't have the new smartpqi driver will be
> >attached
> >> via the aacraid one.
> >>
> >
> >That's ok because for previous distros the new controller will work
> >with the previous aacraid driver, although with non-optimal
> >performance.
> 
> Not after this change hits. Then systems that only have aacraid in the initrd
> will fail to boot.
> 
> >What we want to do is sync up at 4.9 so going forward only the new
> >smartpqi driver will attach to these new controllers.
> 
> So you have a plan in place with the distros to migrate the initrd images?
> Without being told, some will only install the modules the previous initrd  was
> configured for.
> 
> James

Yes we do have a plan. 
We have also run tests where we install using the aacraid driver, then
upgrade to the smartpqi driver. For the major distros, the iniitrd was
updated with the new smartpqi driver.

The distros currently have this patch applied already and we are concerned
that it will be redacted the next time they pull from kernel.org.

Is there something I can add to the smartpqi.txt document that
can make this more clear?

Thanks,
Don

> 
> >Scott
> >
> >> Given that the life times of enterprise distributions is two years
> >and you're
> >> releasing this smartpqi soon, the overlap is unavoidable.
> >>
> >> James
> >>
> 
> 
> --
> Sent from my Android device with K-9 Mail. Please excuse my brevity.
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