Changes for PostgreSQL in jail.

[ndruba]

Hi!
I have PostgreSQL, installed in jail. But zfs is at host system. Because of this, cant working command from lib/zfstools/snapshot.rb
I need one parameter in two places at line 74:
cmd = %Q[(psql <<HERE!!!>> -c "#{sql_pre_query}" postgres ; #{zfs_cmd} ) ; psql <<AND_HERE!!!>> -c "#{sql_post_query}" postgres]
to put there something like
-U postgres -h jail.host.local
But I not understand, how most correctly do this. May be someone can tell me some about?

And after some thought ...
I think, that good idea create parameter in zfs properties, whose value would be the name of the variable containing the necessary launch flags... Because now I have one jail with postgres, but very soon I will have second.
And in this case also good idea to put variable with launch flags in file at /usr/local/etc.