[DRBD-user] drbd does not find metadata any more

[Roland Kammerer]

On Thu, Nov 26, 2020 at 01:08:40PM +0100, Michael Schwartzkopff wrote:
> Hi,
> 
> 
> I tried to upgrade from CentOS 8.0 to 8.1. My installation has a
> self-compiled DRBD-9.
> 
> After the upgrade my drbd does not start any more. the Status says:
> 
> # drbdadm status
> r0 role:Secondary
>   disk:Diskless
>   dev02 connection:StandAlone
> 
> 
> Trying to attach to the disk tells me:
> 
> # drbdadm attach r0
> 1: Failure: (119) No valid meta-data signature found.
> 
>         ==> Use 'drbdadm create-md res' to initialize meta-data area. <==
> 
> Command 'drbdsetup attach 1 /dev/vgDev01/drbd /dev/vgDev01/drbd
> internal' terminated with exit code 10
> 
> 
> The journal says:
> 
> Nov 26 13:05:09 dev01.sys4.de kernel: drbd r0/0 drbd1: meta-data IO
> uses: blk-bio
> Nov 26 13:05:09 dev01.sys4.de kernel: drbd r0/0 drbd1: ambiguous node
> id: meta-data: 1, config: 0

Is the right module loaded?

Did you change the res file?

Did the host names change in any way?

Did you actually specify a node-id in the res file?

All in all the quick way out would most likely be:
- double check the right drbd9 module is loaded.
- add a node-id for every host to the res file on all nodes. If possible
  the same ID/host combination on all nodes :).
- create-md on all sides
- start an initial sync or if you are certain enough that everything was
  fine, skip the initial sync.

Regards, rck