[erlang-questions] documentation of incremental backups in mnesia

[Håkan Mattsson]

On Fri, Sep 25, 2009 at 1:43 PM, Ulf Wiger
<ulf.wiger@REDACTED> wrote:
> Chandru wrote:
>>
>> Hi Ulf,
>>
>> 2009/9/25 Ulf Wiger <ulf.wiger@REDACTED
>> <mailto:ulf.wiger@REDACTED>>
>>
>>    It is documented, sort of, but only in passing. You have to
>>    read pretty carefully to catch it at all, and you probably
>>    need to experiment a bit before understanding how it works.
>>
>>
>>  Could you please point to where it is mentioned in passing. It seems to
>> be a very useful feature.
>
> Good point. It's actually not documented at all. :)
>
> Long ago, it was mentioned in the release notes:
>
> http://erlang.org/documentation/doc-5.0.1/lib/mnesia-3.9.2/doc/html/notes.html
>
> (That particular page is from the year 2000. I'm guessing
> it appeared first in the OTP R5B release.)

Yes, some new nice backup features (incremental backup, selective backup
and local backup) was introduced in september 1999 for OTP R5B. I was
quite surprised when you pointed out that they not were documented. Perhaps
it is time to document them, but I think that we ought to add more test cases
for these features before doing that. As they have been undocumented for almost
exactly a decade I suspect that very few (if any) users have been using them.

/Håkan