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<body class='hmmessage'><div dir='ltr'>Thanks Bob for your reply. While upgrading drbd (removing 8.3.13 and installing 8.4.2) when I recreate meta data (drbdadm create-md) will it affect data on the disk?<br><br><div>> Subject: Antwort: Re: [DRBD-user] DRBD 8.3.13 Sync getting stalled with RHEL 6<br>> To: drbd-user@lists.linbit.com<br>> CC: catchvjay@hotmail.com<br>> From: Robert.Koeppl@knapp.com<br>> Date: Fri, 25 Oct 2013 10:32:08 +0200<br>> <br>> If you can live with a short downtime the path is rather simple:<br>> Stop your cluster software on the secondary, upgrade there bit leave<br>> DRBD/clustersoftware stopped.<br>> Stop your cluster on the primary node<br>> Update DRBD<br>> Start your cluster up again on primary node.<br>> After the primary is fully up again you have two options:<br>> 1. start your cluster software on the secondary and let it take care of<br>> starting DRBD/sync<br>> 2. more paranoid:<br>> 2.a disconnect ddrbd on primary: drbdadm disconnect all<br>> 2.b load drbd module on secondary: modprobe drbd<br>> 2.c bring up resources on secondary node: drbdadm up all<br>> 2.d invalidate data on secondary: drbdadm invalidate all<br>> 2.e connect primary again: drbdadm connect all<br>> This will trigger a resync. after it is done, stop drbd and start your<br>> cluster manager on the secondary node<br>> Mit freundlichen Grüßen / Best Regards<br>> <br>> Robert Köppl<br>> <br>> Customer Support & Projects<br>> Teamleader IT Support<br>> <br>> KNAPP Systemintegration GmbH<br>> Waltenbachstraße 9<br>> 8700 Leoben, Austria<br>> Phone: +43 3842 805-322<br>> Fax: +43 3842 82930-500<br>> robert.koeppl@knapp.com<br>> www.KNAPP.com<br>> <br>> Commercial register number: FN 138870x<br>> Commercial register court: Leoben<br>> <br>> The information in this e-mail (including any attachment) is confidential<br>> and intended to be for the use of the addressee(s) only. If you have<br>> received the e-mail by mistake, any disclosure, copy, distribution or use<br>> of the contents of the e-mail is prohibited, and you must delete the e-mail<br>> from your system. As e-mail can be changed electronically KNAPP assumes no<br>> responsibility for any alteration to this e-mail or its attachments. KNAPP<br>> has taken every reasonable precaution to ensure that any attachment to this<br>> e-mail has been swept for virus. However, KNAPP does not accept any<br>> liability for damage sustained as a result of such attachment being virus<br>> infected and strongly recommend that you carry out your own virus check<br>> before opening any attachment.<br>> <br></div> </div></body>
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