[Dxspider-support] Help request - unable to save user settings

[Dirk Koopman]

The DXSQL fix is for those Storeable crashes, particularly on 10Ghz 
beacons (for a very few people).

I am really struggling to understand what is going wrong for you (and 
AFAIK nobody else) generating those user_asc files. As it's now Tuesday, 
it would be interesting to see how big your users.v3 is right now and 
then look again on Wednesday morning.

The underlying mechanism is pretty straightforward and does not do 
anything remotely unorthodox, it just reads from the first record in the 
file to the last - and while that is going on everything else is locked 
out - all other node activity is stopped for the 10-15 seconds that it 
takes. But the underlying storage mechanism is DB_File a.k.a Berkeley DB 
which is known for being _very_ finicky about things like multiple 
writers and closing programs without first properly closing database 
file handles. But that can't happen in this case (or even after "normal" 
Storable crashes). Having said that, if you do have a Storable crash 
(and continue to do so after the dxqsl fix is in) then it is nonetheless 
prudent to restore the two DB_File backed files (using create_qsl.pl and 
perl user_asc) as well as removing the dupefile.

Dirk G1TLH

On 17/09/2019 05:34, Michael Carper, Ph.D. wrote:
> Understood, Dirk. But they're not held for more than a week. I think 
> that something happens when these user_asc file versions are created. 
> It makes no sense. They're all the same size... very small... compared 
> to the V3 file.
>
> I'm not aware of the DXQSL fix. If it will resolve this issue, I'll 
> take a look.
>
> Mike, VK4/WA9PIE
>
> On Mon, Sep 16, 2019 at 12:38 PM Dirk Koopman via Dxspider-support 
> <dxspider-support at tobit.co.uk <mailto:dxspider-support at tobit.co.uk>> 
> wrote:
>
>     On 16/09/2019 13:33, dd5xx--- via Dxspider-support wrote:
>>     Hi Mike,
>>     sorry to hear about the still existing issues.
>>     The bad news are: I cannot tell you what's happening on your
>>     cluster node
>>     The good news are: your cluster node is working 100% fine at this
>>     moment (16/Sep/2019 12:20UTC), I just did some tests
>     <snip>
>     I just did a straight telnet test as well and my details now seem
>     to be persistent as well..
>
>     ???
>
>     Dirk G1TLH
>     _______________________________________________
>     Dxspider-support mailing list
>     Dxspider-support at tobit.co.uk <mailto:Dxspider-support at tobit.co.uk>
>     https://mailman.tobit.co.uk/mailman/listinfo/dxspider-support
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.tobit.co.uk/pipermail/dxspider-support/attachments/20190917/b4453268/attachment.html>