[DRBD-user] Antwort: Re: DRBD 8.3.13 Sync getting stalled with RHEL 6

Robert.Koeppl at knapp.com Robert.Koeppl at knapp.com
Fri Oct 25 10:32:08 CEST 2013

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

If you can live with a short downtime the path is rather simple:
Stop your cluster software on the secondary, upgrade there bit leave
DRBD/clustersoftware stopped.
Stop your cluster on the primary node
Update DRBD
Start your cluster up again on primary node.
After the primary is fully up again you have two options:
1. start your cluster software on the secondary and let it take care of
starting DRBD/sync
2. more paranoid:
2.a disconnect ddrbd on primary: drbdadm disconnect all
2.b load drbd module on secondary: modprobe drbd
2.c bring up resources on secondary node: drbdadm up all
2.d invalidate data on secondary: drbdadm invalidate all
2.e connect primary again: drbdadm connect all
This will trigger a resync. after it is done, stop drbd and start your
cluster manager on the secondary node
Mit freundlichen Grüßen / Best Regards

Robert Köppl

Customer Support & Projects
Teamleader IT Support

KNAPP Systemintegration GmbH
Waltenbachstraße 9
8700 Leoben, Austria
Phone: +43 3842 805-322
Fax: +43 3842 82930-500
robert.koeppl at knapp.com

Commercial register number: FN 138870x
Commercial register court: Leoben

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