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drbd-user: [DRBD-user] becoming primary with outdated data

[DRBD-user] becoming primary with outdated data

From: Alex Dean <alex_at_nospam>
Date: Mon Mar 22 2010 - 14:39:00 GMT
To: drbd-user@lists.linbit.com

I'm using drbd 3.3.7 + heartbeat 3. I've configured dopd using http://www.drbd.org/users-guide/s-heartbeat-dopd.html
. It works as expected. If I pull the ethernet cable used for drbd
replication, I see dopd activity in heartbeat's logs, and the
secondary's dstate changes to 'Outdated'.

Is it somehow possible to force drbd to become primary with this
outdated data? I'm thinking if there is an unnoticed (failure of
monitoring, perhaps?) failure of the replication link, and then there
is some catastrophic failure on the primary which renders its data
unusable, it might be preferable to go forward with promoting the
outdated secondary to primary status. I understand this means lost
data.

I've been reading through the man pages for drbdadm and drbdsetup, as
well as the DRBD Users Guide, and haven't found anything describing
how to do this. Can it be done?

thanks,
alex

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