Recall that tonight and tomorrow morning I plan to deal with switching our
EPICS CVS version. I've repeated the message I sent on Friday below.
Thanks for your cooperation.
Mark M. Ito, Thomas Jefferson National Accelerator Facility
12000 Jefferson Ave., Mail Stop 12H, Newport News, VA 23606
Email: marki@jlab.org, Office: (757)269-5295, Pager: (757)680-7175
WWW: http://claspc2.cebaf.gov/~marki/
On Fri, 10 Apr 1998, Mark M. Ito wrote:
> Dear Slow B's,
>
> For several reasons (see below) I would like to upgrade our version of CVS
> from 1.3 to 1.9. Since jumping this many version numbers is not always
> easy, I would like to minimize the problems by asking everyone to
>
> check in all of your changes by Tuesday, April 14, at 6 pm
> ==========================================================
>
> and then
>
> delete all your old checked out versions
> ========================================
>
> and then
>
> don't check anything out until Wednesday, April 15, noon.
> =========================================================
>
> The situation I'd like to avoid is checking out code under CVS 1.3 and
> checking it back in under 1.9.
>
> The "delete" step may not be necessary, but I am not sure about that. I
> include it in the procedure to be on the safe side. If you keep your old
> 1.3 checkouts around, and then try to update later with 1.9, you do so at
> your own risk.
>
> So here are the reasons:
>
> 1) CVS 1.9 is really a lot better than 1.3. The most important feature is
> that newer versions of CVS mark a file as dead, rather than "deleting" it.
> That way you can resucitate it later much more easily. The info messages
> are much better and more complete as well.
>
> 2) In looking at migrating our EPICS to the sun and R3.13, I need to do
> some fancier than usual CVS manipulations. Having the modern version will
> make some of these tricks easier.
>
> 3) I'd like to make clas10 a CVS server so that ACC folks can check out
> our code directly on to ACC machines. Might as well invest this work on a
> modern version.
>
> 4) CVS 1.9 is already installed on clas10. I just have to modify the Hall
> B EPICS directory path to use it.
>
> As point (4) implies, to make the change you should not have to do
> anything. On Wednesday after lunch, when you setup_epics, you'll be using
> CVS 1.9.
>
> I hope.
>
> -- Mark
>