Hi Thomas,
I just tested your scenario on DRBD 8.4.3. It seems fine, connection did not
break.
While doing the DD, I did change primary / secondary on bob node few times, but
the connection never break.
The only thing I couldn't run this drbdadm --allow-two-primaries=yes
<resource>, it give uknown command. But I do have allow-two-primaries setup in
my drbd.conf, not sure that make any different?
Regards
Louis
>________________________________
> From: Thomas Thrainer <[email protected]>
>To: Luca Fornasari <[email protected]>
>Cc: [email protected]
>Sent: Friday, May 3, 2013 10:00 AM
>Subject: Re: [DRBD-user] Enabling two primaries break connection
>
>
>
>Hi,
>
>
>Given the fact that I could reproduce the bug regularly, I'm pretty sure that
>this is indeed a DRBD bug. Unfortunately I didn't find a bugtracker on the
>DRBD site. Is there one? If not, what's the official way to report bugs?
>
>
>For the record, here are the steps to reproduce:
> * create a device with primary on alice and secondary on bob
> * on alice: while true; do dd if=/dev/zero of=/dev/drbd0; done
> * on bob: drbdadm --allow-two-primaries=yes <resource>; drbdadm primary
><resource>
> * you might have to drbdadm secondary <resource> on bob and then repeat the
>previous step in order to produce the bug
>
>
>Log files are as mentioned in the first mail of the thread.
>
>
>Cheers,
>Thomas
>
>
>
>
>
>On Tue, Apr 30, 2013 at 2:25 PM, Thomas Thrainer <[email protected]> wrote:
>
>Hi Luca,
>>
>>
>>I just reproduced the exact same problem using only drbdadm. I also inspected
>>the output of the -d option, and drbdadm does the exact same thing as Ganeti
>>in this regard.
>>
>>
>>Thanks,
>>Thomas
>>
>>
>>
>>On Tue, Apr 30, 2013 at 2:18 PM, Thomas Thrainer <[email protected]> wrote:
>>
>>Hi Luca,
>>>
>>>
>>>I'll try the drbdadm method this as soon as I get to it. Right now I have no
>>>machines around which are already configured via drbdadm.
>>>
>>>
>>>Note that I have included both logs (secondary and primary) in my first
>>>email.
>>>
>>>
>>>I use DRBD 8.4.2 because 8.4.3 didn't compile against my kernel (3.2.27) and
>>>I didn't want to put much work into it. I this bug is known and fixed in
>>>8.4.3, I'll might look into compiling against 3.2.27 again.
>>>
>>>
>>>Cheers,
>>>Thomas
>>>
>>>--
>>>
>>>Thomas Thrainer | Software Engineer | [email protected] |
>>>
>>>
>>>
>>>Google Germany GmbH
>>>Dienerstr. 12
>>>80331 München
>>>
>>>Registergericht und -nummer: Hamburg, HRB 86891
>>>Sitz der Gesellschaft: Hamburg
>>>Geschäftsführer: Graham Law, Katherine Stephens
>>
>>
>>
>>--
>>
>>Thomas Thrainer | Software Engineer | [email protected] |
>>
>>
>>
>>Google Germany GmbH
>>Dienerstr. 12
>>80331 München
>>
>>Registergericht und -nummer: Hamburg, HRB 86891
>>Sitz der Gesellschaft: Hamburg
>>Geschäftsführer: Graham Law, Katherine Stephens
>
>
>
>--
>
>Thomas Thrainer | Software Engineer | [email protected] |
>
>
>
>Google Germany GmbH
>Dienerstr. 12
>80331 München
>
>Registergericht und -nummer: Hamburg, HRB 86891
>Sitz der Gesellschaft: Hamburg
>Geschäftsführer: Graham Law, Katherine Stephens
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