[DRBD-user] Data Rollback on DRBD 8.3.4

Lars Ellenberg lars.ellenberg at linbit.com
Mon Feb 21 09:22:36 CET 2011

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

On Mon, Feb 21, 2011 at 08:16:09AM +0800, jayson.cena at teamglac.com wrote:
> hello list,
> we are using drbd 8.3.4 with dual-primary setup on our proxmox VE ver-1.5
> 2 node cluster. before we used this setup, we tested that both disk will
> synchronize by migrating the VMs to the other node. We also regularly
> check
> the status of drbd at /proc/drbd to see that each drbd resources are
> uptodate. 
> But last feb16 morning, our node2 crashed where our 3 fileservers are
> hosted. when we restarted node2, the drbd detected a split brain and it
> automatically synced. But the problem is that the data on node2 where our
> fileservers are running was replaced by the data on node1. we are
> wondering
> why did that happen

very likely the logs (you did not provide) will show that this is
because you told it to do that in the configuration (which you did not
provide either).

> even though there is no application accessing or writing to the drbd
> resource on node1 because all fileserver VMs are running on node2. 
> -------------------------
>        VG->LV (LVM)
> -------------------------
>        RAID10 as PV
> -------------------------
>        4 SATA DISK
> Jayson Cena
> _______________________________________________
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> drbd-user at lists.linbit.com
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: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com

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