[DRBD-user] DRBD LVM2 Trouble

Lars Ellenberg lars.ellenberg at linbit.com
Thu Mar 6 10:51:06 CET 2008

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


On Wed, Mar 05, 2008 at 05:52:31PM -0800, Tyler Seaton wrote:
> Hey Guys,
>
> I have a pretty bad situation on my hands.
>
> We had a node configured running DRBD 8.0.6. The goal was to keep this 
> running in standalone mode until we provisioned a matching machine. We 
> purchased the matching machine and finally had it fully configured today. I 
> kicked off the initial sync, and had hoped that we would have both machines 
> in sync within a day or two.
>
> This was unfortunately not the case. When I kicked off the sync all seemed 
> well however our application quickly began throwing error's as the primary 
> node became read only. I quickly shut off drbd on the secondary node and 
> attempted to return the original configuration to the primary server. Sadly 
> no amount of back peddling has helped us. We are currently dead in the 
> water.
>
> DRBD was configured on the primary node with LVM. We have/had 3 resources 
> configured the first 2 being 2TB in size and the 3rd being 1.4-5TB in size. 
> Since stopping the initial sync I have not been able to mount LVM Volume 
> Group that sits above the three resources. NOTE: the SDB devices on nfs2 
> are numbered differently.
>
> /var/log/messages was giving the following messages:
>
> Mar  5 14:38:35 nfs2 kernel: drbd2: rw=0, want=3434534208, limit=3421310910
> Mar  5 14:38:35 nfs2 kernel: attempt to access beyond end of device
> Mar  5 14:38:35 nfs2 kernel: drbd2: rw=0, want=3434534216, limit=3421310910
> Mar  5 14:38:35 nfs2 kernel: attempt to access beyond end of device
> Mar  5 14:38:35 nfs2 kernel: drbd2: rw=0, want=3434534224, limit=3421310910
> Mar  5 14:38:35 nfs2 kernel: attempt to access beyond end of device

please provide FROM BOTH NODES output of
# drbdadm -d attach all
# sfdisk -d /dev/sdb
# grep -e drbd -e sdb /proc/partitions

-- 
: Lars Ellenberg                           http://www.linbit.com :
: DRBD/HA support and consulting             sales at linbit.com :
: LINBIT Information Technologies GmbH      Tel +43-1-8178292-0  :
: Vivenotgasse 48, A-1120 Vienna/Europe     Fax +43-1-8178292-82 :
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