Re: [AMaViS-user] Don't reset snmp.db at startup ?

Herold,

> I was wondering why snmp.db is reset at startup... is there some real need
> for that (perhaps internal statistics, counters growing too much or
> something like that) ?

No real need to reset, one can keep these databases persistent.
The only reason for a reset was to make life easier in case of
database upgrades (db compatibility) and in cases of a database
corruption/recovery.

> I'm pulling some of that data straight out of the db with an simple
> evolution of amavisd-agent, and dump it into mrtg, and I'd like not having
> at least counters like InMsgs restarted at every configuration tweak
> (counters would still wrap at some time but I can live with that).
>
> I didn't find support for this and I'm not familiar with BerkelyDB... I
> suppose changes would have to been made either in child_init_hook() or
> directly in Amavis::DB::SNMP->new() ?
> Hmmm I see in that db is child process data, too, this means just keeping
> the old db instead of creating a new one could be harmfull, since at least
> that selected data should be initialized freshly every time ?

The key code is in:

package Amavis::DB;
....
# create new databases, then close them (called by the parent process)
# (called only if $db_home is nonempty)
sub init($) {
my($predelete) = @_; # delete existing db files first?


So changing Amavis::DB::init(1) into Amavis::DB::init(0)
in sub pre_loop_hook is supposed to work. I haven't tried it
recently, but earlier versions were happy one way or the other.

Mark


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