DNS scavenging, big DCDOMAINZONES ldb etc.

[Лыков Михаил]

Hi all list members!

I encounter a problem with size and growth a
/var/lib/samba/private/sam.ldb.d/DC=DOMAINDNSZONES,DC=DC,DC=SAMGES,DC=RU.ldb 
file, and after googling I see that problem is a common.

I setup a 2 debian servers with 2 DC's, unfortunately before jessie 
release, and i have a 4.1.9+dfsg-1~bpo70 samba release from 
wheezy-backports in production.

Domain size is around 150 workstations now, and ldb size like 500Mbs

on dc1 I have a

ldbsearch -H 
/var/lib/samba/private/sam.ldb.d/DC=DOMAINDNSZONES,DC=DC,DC=SAMGES,DC=RU.ldb 
'isDeleted' dn
# 81723 entries
on dc2 it is
# 81718 entries

In dns zones properties (on windows client) I try to set(enable)  a 
scavenging properties and get an "function unimplemented" responce.

After googling and trying to find an some actual info (among 2-5 years 
ago posts) I found that in current jessie version (4.1.17) this problem 
may be resolved.

Is it true?
If so, are there an upgrade-and-configure instructions?

Is I must setup a new DC, join it, then second new DC, transfer roles 
and shut down and old DCs?

What about a scavenging properties enabling?

And what about a sysvol replication (some offtopic), now it done by cron 
+ rsync, it is realized internally?


-- 
Mike Lykov, system administrator