[Drbd-dev] [DRBD-8.0 PATCH] Add split-brain event to netlink
Ernest.Montrose at stratus.com
Fri Jan 11 16:38:30 CET 2008
This one actually was. And Phil took a different approach where we
would use the usermode_helper. Below is that exchange for completeness:
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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From: drbd-dev-bounces at linbit.com [mailto:drbd-dev-bounces at linbit.com]
On Behalf Of Graham, Simon
Sent: Friday, January 11, 2008 10:25 AM
To: drbd-dev at linbit.com
Subject: [Drbd-dev] [DRBD-8.0 PATCH] Add split-brain event to netlink
I'm not sure if this was previously submitted or not, but this change
adds an explicit split-brain event to the netlink notifications so that
user mode code can know when a split-brain situation is encountered.
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