Experimental Physics and
Industrial Control System

Carl Lionberger <[email protected]> · Tue, 31 Jul 2007 15:08:26 -0700

We had a version of autosave at LBNL that looked at characters stuck in
the end of the record description file at boot time, using the static
library, to find out what records should be saved. It restored
according to what records were in the save file. That was really
convenient in many cases, for example the characters (which just were a
sort of regular expression for the fields to be saved) could be put in
the template files and no matter how you expanded the templates it would
work.
We used this for the SNS front end but no one seemed comfortable with it
and the APS autosave was outstripping it on file checking/handling (they
had a common ancestor...), so while I was at SNS I switched away from
the LBNL version. My last act of maintenance was to strip out the
search and make it into a thing you could call in the startup file to
generate the request file before running whatever file based autosave
you like. As far as I know it has never been seriously used. It should
still be in the SNS cvs repository. The old LBNL autosave (i think only
3.13 compatible) is called "bumpless", "autoBReq" is the 3.13 version
of the req file writer, and "autoBReq314" a 3.14 version.
Kay could dig it out, I think
Carl
bumpless                epics/supTop/front_end/bumpless
autoBReq                epics/supTop/autoBReq
autoBReq314             epics314/supTop/autoBReq

Emmanuel Mayssat wrote:

* Is there a SIMPLE way to generate a req/request file on the fly for
backup? I have "dynamic" ioc, where the names of records may change
between reboots, or some records may just disappear. Do you have each
time to reconfigure the backup request file? Although I believe this
should be required for a general backup utility, why should it for a
bumpless reboot utility?
Is it possible to generate a req file at ioc startup that save all the
"live" records with name's ending with *O or *AO, etc. ( a dbgrep to a
file can help, but the backup utility needs to reread its config files )

--

Emmanuel

--

Carl Lionberger
510 486 7503

Software Developer, Engineering Division

Lawrence Berkeley National Laboratory

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System