[Ocfs2-users] Kernel panic with OCFS2 1.2.6 for EL5

[Nuno Fernandes]

Hello,

> After booting the server I'm getting a lot of the following messages:
>
> Jul  5 11:09:54 megasrv2 kernel:     Additional sense: Logical unit not
> ready, manual intervention required
> Jul  5 11:09:54 megasrv2 kernel: end_request: I/O error, dev sdd, sector 0
> Jul  5 11:09:54 megasrv2 kernel: Buffer I/O error on device sdd, logical
> block 0
> Jul  5 11:09:54 megasrv2 kernel: sd 1:0:0:2: Device not ready: <6>:
> Current: sense key: Not Ready
>
> But I guess this one has something to do with EMC PowerPath as sdd is not a
> valid device. And there is no PowerPath for use with RHEL5 yet...
>
> I'm sorry I haven't had the time to investigate this much. But right now I
> have no clue what caused this panic, or if it will happen again...
This is a known issue.. EMC CX3-20 is active-passive so devices through one of 
the controllers aren't usable until a trespass occurs.

You don't need to use PowerPath. Multipath tools from the OS works perfectly.

Rgds
Nuno Fernandes