[OpenAFS] Differences in vos e output

[Jeffrey Hutzelman]

On Tuesday, December 21, 2004 10:33:03 -0700 "Kristen J. Webb" 
<kwebb@teradactyl.com> wrote:

> It appears that there may be more issues related
> to the display of the Last Update field
>
> 1.3 output:
>
>     Creation    Sun Dec 19 06:50:29 1999
>     Copy        Fri Oct 31 12:09:16 2003
>     Backup      Wed Dec 15 15:11:18 2004
>     Last Update Wed Jul 14 06:13:18 1999
>
> 1.2 output:
>
>     Creation    Sun Dec 19 06:50:29 1999
>     Last Update Sun Dec 19 06:50:29 1999
>
> In the 1.3 output the last update is
> older than the creation date in this example.
>
> It seems that it should be the same as
> the Creation date or Never in this instance.

If you were parsing the output of "vos examine" to see when a volume was 
modified in 1.2, then you are going to be unhappy some of the time.

You see, volumes have something like 5 or 6 different timestamps.  If 
you're doing an incremental dump, then the one you want is the one printed 
by 1.3 as the "last update" stamp.  In certain circumstances this can be 
older than the creation stamp, because of what constitutes "creation" of a 
volume.  For example, on a cloned volume this is the date the clone was 
created, which is always more recent than the last time the source volume 
was modified.

Unfortunately, in OpenAFS 1.2.x and earlier, vos tries to be "friendly". 
The number it prints next to "Last Update" is actually the more recent of 
the creationDate or the updateDate.  Starting in 1.3, it will print the 
actual updateDate, even if it is older than the creationDate.


-- Jeffrey T. Hutzelman (N3NHS) <jhutz+@cmu.edu>
   Sr. Research Systems Programmer
   School of Computer Science - Research Computing Facility
   Carnegie Mellon University - Pittsburgh, PA