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Re: [Samba] Van Belle Repo - 4.10 for Bionic




On Sun, 31 Mar 2019 14:29:32 +0200
Viktor Trojanovic <viktor@xxxxxxxx> wrote:

> On Sun, 31 Mar 2019 at 14:22, Rowland Penny via samba
> <samba@xxxxxxxxxxxxxxx> wrote:
> >
> > On Sun, 31 Mar 2019 13:55:18 +0200
> > Viktor Trojanovic via samba <samba@xxxxxxxxxxxxxxx> wrote:
> >  
> > > On Sat, 30 Mar 2019 at 17:45, L.P.H. van Belle <belle@xxxxxxxxx>
> > > 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.
> >  
> 
> That was the last information I had. I thought something changed after
> seeing Andrew comment in the bug report
> (https://bugzilla.samba.org/show_bug.cgi?id=13760) and Louis
> confirming that this should actually work.
> 
> Do you happen to know how to do the walk on Ubuntu? If I understand
> this correctly, unless I want to compile myself (and I don't), I need
> packages, and neither Ubuntu nor Louis provide packages for 4.8. Which
> is why I'm thinking to upgrade by just joining a new DC based on Samba
> 4.9.4. Or wait for Louis to publish 4.10 as this should, in my
> understanding, make it possible again to upgrade properly.
> 
> - Viktor

It looks like the fix is in 4.9.5 & 4.10.0 and Louis has issued Samba
4.9.5 packages ;-)

Rowland

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