On 12/19/17 19:17, Dr J Austin wrote:
> On Mon, 2017-12-18 at 19:24 -0500, Sam Varshavchik wrote:
>> Gordon Messmer writes:
>>
>>> On 12/18/2017 05:52 AM, Sam Varshavchik wrote:
>>>> Time IP addresses
>>>> ======== ==================
>>>> 08:35:34
>>>> 08:35:35 192.168.0.1
>>>>
>>>> At 08:35:34 the server had no IP addresses
>>>
>>> Well, it probably had 127.0.0.1, which brings into question what the  
>>> complete state of the network was.
>> I'm pretty sure it does. My script only checks the IP addresses it knows  
>> about. It doesn't check loopback.
>>
>>> Could you arrange to execute "ip addr show | logger" in your unfrak script? 
>>>   
>>> That way we get all of the interfaces and all of the addresses regardless 
>>> of  
>>> family.
>>>
>>> Could you also see if removing the "-s" flag from  
>>> /usr/lib/systemd/system/NetworkManager-wait-online.service changes the  
>>> behavior of the system?
>> I'll do this at the first convenient opportunity.
>>
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> I have now tried to do some sensible testing with the -s option
> in /usr/lib/systemd/system/NetworkManager-wait-online.service
>
> I have tested in groups of 10 reboots in the order shown
> A fail indicating that the NFS mount has failed
> with -s    2 fails in 10
> no   -s    0 fails in 10
> with -s    3 fails in 10
> no   -s    0 fails in 10
> no   -s    0 fails in 10
> with -s    4 fails in 10
>
> I have not seen a single failure with the -s removed
> Hence my immediate problem appears to be solved!
>
> Many thanks

FWIW, are you aware that you shouldn't make changes to  
/usr/lib/systemd/system/*
files?  These can be overwritten up updates.  If you want to make changes you 
should
created a file with the same name in /etc/systemd/system. 

-- 
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