Re: Intermittent Issues with RCS binary co

[Paul Eggert]

"Meinert, Debora L." <address@hidden> writes:

>  co -r1.0 "XXGLPMCA.rdf" > "XXGLPMCA.rdf.out" 2>&1
> 
> We find that the file, that has been checked out, gets truncated by more
> than half the bytes of the original file.  We are running on an HP-UX
> version 11.11 Superdome server, utilizing MC/ServiceGuard (failover).

What kind of filesystem is storing the files?  I'm not familiar with
MC/ServiceGuard.

Are the RCS files themselves OK?  That is, do they contain all the
data in question?

> Have you had anyone report a problem similar to this

No.  Many people use RCS under HP-UX, though I haven't had any
specific reports for HP-UX 11.11.

> can you offer any suggestions?

If the problem is reproducible, then I'd use the "tusc" command to see
which system calls are being executed.  This should help you isolate
the problem.  <ftp://ftp.cup.hp.com/dist/networking/tools/tusc.7.5.shar>

One possibility is that it is a bug in the HP-UX 11.11 implementation
of mmap.  If that's the case, you can work around the bug by manually
modifying RCS's configuration file so that RCS thinks that mmap is not
supported.  Then remove all the .o files and type "make" again.  This
will hurt performance, but it would work around an mmap bug if that's
what's causing your problem.