[OpenAFS] Strange sizes of incremental volume dumps

[Sergio Gelato]

* Friedrich Delgado Friedrichs [2009-03-11 16:30:53 +0100]:
> Today we noticed that the size of the incremental dumps is non-zero
> for some volumes which have not changed in quite a while.
[...] 
> We found some other volumes that had not changed since March 9th, and
> there doesn't seem to be a relation between the size of the full and
> incremental dumps.
[...] 
> Can anybody explain this? Is it a bug, a feature, a configuration
> error?

Feature. Incremental dumps always contain a full dump of all directory vnodes.
That way one knows which files have been deleted (or renamed) since the 
last full dump.