Re: Stopping IOC boot on failure to load database

[Jeong Han Lee via Tech-talk <tech-talk@aps.anl.gov>]

Hi Andrew,


> On 4/29/19 11:19 AM, Jeong Han Lee via Tech-talk wrote:
> > Is it possible to port or make patch files of this feature into the
> > existent 3.15.6?
> The changes that Bruce is proposing could probably be applied to the
> equivalent files in any EPICS Base release since about 3.14.3, although
> you wouldn't be able to use the GNU Patch program to do that
> automatically since the files have been moved around quite a bit and
> there have been other changes to the sources that would confuse patch.

  Here is no problem, because I create patch files according to the 
specific EPICS Base versions. Yes, I know that is pain, but only one 
time pain I will have always.


> Martin Konrad has suggested that this change be applied to the Base 3.15
> branch instead of to 7.0, which I would agree to. It sounds like that
> might be a popular idea.

  I didn't see his suggestion before. Yes, I also like his proposal.

  Thank you!

  Han


> - Andrew
>
>
> > On 4/27/19 8:07 AM, Hill, Bruce via Tech-talk wrote:
> > > Added dbLoadSuspendOnError iocsh variable.
> > > Launchpad merge proposal is here:
> > > https://code.launchpad.net/~bhill/epics-base/+git/epics-base/+merge/366606
> > >
> > >
> > > Cheers,
> > > - Bruce
> > >
> > > On 4/15/19 11:44 AM, Mooney, Tim M. via Tech-talk wrote:
> > > > I've long wanted to give autosave the ability to retain PV values of
> > > > databases that loaded successfully in the past, but that failed or
> > > > were commented out during one or more reboots, so they can be
> > > > restored when the database next boots successfully.  I don't have
> > > > plans to do this soon, but it does seem a reasonable thing to do,
> > > > and not all that hard.
> > > >
> > > > Tim Mooney (mooney@anl.gov) (630)252-5417
> > > > Beamline Controls Group (www.aps.anl.gov)
> > > > Advanced Photon Source, Argonne National Lab
> > > >
> > > > ------------------------------------------------------------------------
> > > >
> > > > *From:* tech-talk-bounces@aps.anl.gov
> > > > <tech-talk-bounces@aps.anl.gov> on behalf of Paduan Donadio, Marcio
> > > > via Tech-talk <tech-talk@aps.anl.gov>
> > > > *Sent:* Monday, April 15, 2019 12:49 PM
> > > > *To:* tech-talk@aps.anl.gov
> > > > *Subject:* Stopping IOC boot on failure to load database
> > > >
> > > > Hello, all.
> > > >
> > > > We are thinking about creating a function in EPICS base like
> > > > stopOnDbLoadErrorto be called before dbLoad* functions. The idea is
> > > > to freeze the IOC boot with a message on the IOC shell or to
> > > > completely abort, exiting. Alternatively, we could also place an
> > > > additional optional parameter to the dbLoad* functions to have the
> > > > same behavior.
> > > >
> > > > What we intend with this is:
> > > >
> > > > 1.) bring the error to the attention of the responsible IOC engineer
> > > > and,
> > > >
> > > > 2.) stop corruption of Autosave files due to missing PVs.
> > > >
> > > > Do you think it would be something valuable to be added in an
> > > > official EPICS release?
> > > >
> > > > Thank you,
> > > >
> > > > Márcio Paduan Donadio
> > > >
> > > > Control Systems Engineer
> > > >
> > > > SLAC
> > >
> > > --
> > > Bruce Hill
> > > Member Technical Staff
> > > SLAC National Accelerator Lab
> > > 2575 Sand Hill Road M/S 10
> > > Menlo Park, CA  94025