[Drbd-dev] drbdsetup events patch to announce Split-brain
Ernest.Montrose at stratus.com
Mon Oct 29 14:36:25 CET 2007
I think this will work for us actually. So feel free to check it in.
From: Philipp Reisner [mailto:philipp.reisner at linbit.com]
Sent: Monday, October 29, 2007 6:20 AM
To: Montrose, Ernest
Cc: drbd-dev at linbit.com
Subject: Re: [Drbd-dev] drbdsetup events patch to announce Split-brain
On Thursday 25 October 2007 14:24:55 Montrose, Ernest wrote:
> Currently we do not use the payload for anything. I was just being
> paranoid thinking that we might need it in the future. But you can
> it if you wish. If we have a pressing need for it in the future,
> deal with it then.
Over the weekend I realized that the split brain event is quite
similar to a number of events we already signal back to userspace.
The invocation of handlers is also visible through the "drbdsetup
The attached patch creates an handler called "split-brain". If you
can live with that interface as well, I will commit that...
In the future I want to go this way:
* Allow one to set the usermode_helper to the empty string. Then it
is still possible to get all events through the "drbdsetup events"
* The "outdate-peer" usermode_helper sends an exit code back
to kernel space. This is not yet possible when one only uses
the "drbdsetup events" interface. This should get fixed.
: Dipl-Ing Philipp Reisner Tel +43-1-8178292-50 :
: LINBIT Information Technologies GmbH Fax +43-1-8178292-82 :
: Vivenotgasse 48, 1120 Vienna, Austria http://www.linbit.com :
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