[Samba] Van Belle Repo - 4.10 for Bionic

[Rowland Penny]

On Sun, 31 Mar 2019 13:55:18 +0200
Viktor Trojanovic via samba <samba at lists.samba.org> wrote:

> On Sat, 30 Mar 2019 at 17:45, L.P.H. van Belle <belle at bazuin.nl>
> wrote:
> >
> > you can upgrade from 4.7 to 4.9.
> > but you must run samba-tool dbcheck
> > that should work also. after the check run samba-tool dbcheck
> > --reindex 
> 
> I thought that maybe indeed I did something wrong the last time so I
> followed your advice. Unfortunately, it broke my DC again. (Luckily, I
> made a snapshot before doing this so I should be able to easily
> revert).
> 
> So I went through with the update from 4.7.4 to 4.9.4, and after the
> update I ran:
> 
> # samba-tool dbcheck
> Checking 322 objects
> Checked 322 objects (0 errors)
> 
> # samba-tool dbcheck --reindex
> Re-indexing
> completed re-index OK
> 
> # ldbedit -H /var/lib/samba/private/sam.ldb
> (shows contents of sam.ldb, closing the file)
>    # 0 adds  0 modifies  0 deletes
> 
> # reboot
> 
> # journalctl -xe
> 
> Mar 31 11:43:52 dc1 samba[224]: task[dnsupdate][224]:
> /usr/sbin/samba_dnsupdate: ERROR(runtime):
> uncaught exception - (9711, 'WERR_DNS_ERROR_RECORD_ALREADY_EXISTS')
> Mar 31 11:43:52 dc1 samba[224]: task[dnsupdate][224]: [2019/03/31
> 11:43:52.021002,  0] ../lib/util/
> util_runcmd.c:327(samba_runcmd_io_handler)
> Mar 31 11:43:52 dc1 samba[224]: task[dnsupdate][224]:
> /usr/sbin/samba_dnsupdate:   File "/usr/lib
> /python2.7/dist-packages/samba/netcmd/__init__.py", line 177, in _run
> Mar 31 11:43:52 dc1 samba[224]: task[dnsupdate][224]: [2019/03/31
> 11:43:52.021202,  0] ../lib/util/
> util_runcmd.c:327(samba_runcmd_io_handler)
> Mar 31 11:43:52 dc1 samba[224]: task[dnsupdate][224]:
> /usr/sbin/samba_dnsupdate:     return self.
> run(*args, **kwargs)
> Mar 31 11:43:52 dc1 samba[224]: task[dnsupdate][224]: [2019/03/31
> 11:43:52.021375,  0] ../lib/util/
> util_runcmd.c:327(samba_runcmd_io_handler)
> Mar 31 11:43:52 dc1 samba[224]: task[dnsupdate][224]:
> /usr/sbin/samba_dnsupdate:   File "/usr/lib
> /python2.7/dist-packages/samba/netcmd/dns.py", line 945, in run
> Mar 31 11:43:52 dc1 samba[224]: task[dnsupdate][224]: [2019/03/31
> 11:43:52.021539,  0] ../lib/util/
> util_runcmd.c:327(samba_runcmd_io_handler)
> Mar 31 11:43:52 dc1 samba[224]: task[dnsupdate][224]:
> /usr/sbin/samba_dnsupdate:     raise e
> Mar 31 11:43:52 dc1 samba[224]: task[dnsupdate][224]: [2019/03/31
> 11:43:52.047043,  0] ../source4/d
> sdb/dns/dns_update.c:330(dnsupdate_nameupdate_done)
> Mar 31 11:43:52 dc1 samba[224]: task[dnsupdate][224]:
> ../source4/dsdb/dns/dns_update.c:330: Faile
> d DNS update - with error code 26
> 
> Does anyone have an idea what causes these errors?
> 
> - Viktor
> 

Yes, it appears that the change to the GUID index mode that first
appeared in 4.8.0 is the culprit. I don't think anybody really knows why
it fails, but it is believed to be that 4.9.x thinks the GUID index
mode is being used, but the database is still the 4.7.x type.

There have been a few workarounds suggested, but, to my knowledge, the
only real upgrade path is to 'walk' up the versions. From 4.7.x upgrade
to 4.8.x, run this so the database is changed to the GUID index mode
and then upgrade to 4.9.x or higher.

Rowland