On Wed, Aug 09, 2017 at 05:20:22PM +0800, li songmin wrote:
> Hi,
> 
> when I upgrade fdrbd rom 8.3.15 to 8.4.6-5, there is an oops cause by NULL
> pointer Error.

We are at 8.4.10 already.
Just saying.

> 
> upgrade step as follow:
> 
> 1.  primary node work as normal
> 2. stop drbd 8.3.15 on secondary node, and upgrade it to 8.4.6-5.
> 3. start secondary node, now data begin sync from primary node.
> 4. upgrade primary node with follow step
>      1. stop business service on drbd
>       2. disconnect drbd for unmount quickly  <--  oops on secondary node
> here?

Why disconnect?

>       3.  umount filesystem
>       4. primary -> secondary
>       5. connect drbd and waiting sync complete.
>       6. business service may start on secondary node now.
>       7. stop drbd 8.3.15 on primary node, and upgrade it to 8.4.6-5.
> 
> call stack:

> <4>[66071017.155051] Modules linked in: softdog drbd(FN)

What did you need to force the module for?
Probably *that* is your problem right there.


-- 
: Lars Ellenberg
: LINBIT | Keeping the Digital World Running
: DRBD -- Heartbeat -- Corosync -- Pacemaker

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