Truck replication page: http://www.drbd.org/users-guide/users-guide.html
For dump /restore part: http://www.drbd.org/users-guide/s-resizing.html
What I am trying to achieve:
~~~~~~~~~~~~~~~~~~
I have 2 node setup (primary/secondary), each node have ~4TB disk, and rest of
the hardware configuration is exactly the same. I want this setup so that in
a fail over scenario where secondary can be promoted to primary. I am using
Truck replication because I want to avoid initial sync time, which in our case
takes more than 12hrs.
> > takes place. Any idea what could be causing this,
> You ;)
Glad if this is the case :)
Basically, steps that I mentioned earlier were for secondary node only.
> > drbdadm detach res
> why?
Because if resource is attached we cannot restore metadata (metadata dump from
primary) .
> > ${drbdmeta_cmd/dump-md/restore-md} /var/testmeta
>
> why?
Basically it is delivering "drbdmeta 1 v08 /dev/sdb3 internal restore-md
/var/testmeta" command to restore meta on this secondary node (sorry for
including extra bash commands). So the idea is that when both nodes connect
they are UpToDate/UpToDate.
Let me know if there is something wrong with this approach.
Thanks much,
Jay
> Date: Tue, 10 Nov 2009 16:10:44 +0100
> From: [email protected]
> To: [email protected]
> Subject: Re: [DRBD-user] Truck replication
>
> On Mon, Nov 09, 2009 at 10:26:07PM +0000, jay b wrote:
> >
> >
> > Hi All:
> >
> > I am hitting a strange behavior during truck replication (so far it
> > has occurred to one machine out of 10). I have two machines node1 and
> > node2, and I am restoring metadata on node2. Whenever I do the
> > following (as mentioned on truck replication page) resynchronization
> > takes place. Any idea what could be causing this,
>
> You ;)
>
> > any clues to debug such issues?
> >
> > drbdsetup 1 new-current-uuid --clear-bitmap
>
> fine.
>
> > drbdadm detach res
>
> why?
>
> > drbdmeta_cmd=$(drbdadm -d dump-md res)
>
> why?
>
> > drbdadm detach res
>
> why?
>
> > ${drbdmeta_cmd/dump-md/restore-md} /var/testmeta
>
> why?
>
>
> May I ask
> * what are you trying to achieve?
> * which "truck replication page" are you referring to?
>
> --
> : Lars Ellenberg
> : LINBIT | Your Way to High Availability
> : DRBD/HA support and consulting http://www.linbit.com
>
> DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
> __
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