[Samba] After upgrade samba 4.16 -> 4.18, unable to access cifs-shares exported from a netapp-server

[Rowland Penny]

On 08/06/2023 10:53, Rowland Penny via samba wrote:
> 
> 
> On 08/06/2023 10:36, gizmo via samba wrote:
>>
>> Hallo,
>> yesterday we made an upgrade from samba 4.16 to 4.18 (ubuntu 22.04 + 
>> sernet).
>> After the upgrade, all CIFS-Shares exported from our NetApp couldn't 
>> be accessed anymore neither from windows
>> nor from linux.
> 
> Your NetApp doesn't 'export' anything, it (like every other NAS) just 
> supplies shares that other clients can connect to, it is a server
>>
>> The NetApp-Server reported the following errors:
>>
>> secd.netlogon.noServers: None of the Netlogon servers configured for 
>> Vserver (svm) are currently accessible via the network
>> secd.ldap.noServers: None of the LDAP servers configured for Vserver 
>> (svm) are currently accessible via the network
>> secd.lsa.noServers: None of the LSA servers configured for Vserver 
>> (svm) are currently accessible via the network
>>
>> It's like the NetApp-server were not able anymore to connect to the 
>> samba4-server
> 
> It certainly looks that way.
> 
>>
>> Because the CIFS-shares are essential, we had to act fast and went 
>> back to samba 4.16 from the backup.
>> Then everything worked fine again.
> 
> It certainly looks like the upgrade changed something that your NetApp 
> didn't like.
> 
>>
>> Is there any change in samba 4.17 or 4.18 that can cause this behave ?
>> I read the changelog, but couldn't find anything (with my minimal 
>> understanding)
> 
> Like you, I cannot see anything relevant.
> 
> Does your NetApp run vanilla Samba or its own version ?
> What is the smb.conf on the upgraded machine, which I presume wasn't 
> changed during the upgrade.
> 
> Rowland
> 
> 

I take it back, read this:

https://bugzilla.samba.org/show_bug.cgi?id=15240

Rowland