Re: [dnsext] New Version Notification for draft-ah-dnsext-rfc1995bis-ixfr-02

[Masataka Ohta <[e-mail]>]

Mark Andrews wrote:

>>  From an operational experience, I see a lot.  You can run out of memory,
>> out of disk space, on disk journal can get corrupt (yes this happens),
>> DNS software can (and will) have other bugs, people can make mistakes.
>> Yes, all of this happens in the real world.

> Or one could say the it is a design flaw in how the TLD operators
> generate the deltas.  Compression of delta is optional and the
> consequences of doing so were well documented.  The TLD operators
> wrote software that only compressed deltas then configured the
> servers exactly as they were warned not to do if they compressed
> deltas.

The consequences can be avoided, if the result of compression is
consistent between servers. For example, if the compression is done
only on the primary server and only for deltas between two
consecutive XFRs.

But, as journal corruption is mentioned, there should be a lot
more severe operational errors involved, I guess.

						Masataka Ohta