RHEL5.5 + EMC AX4-5i - kernel errors

[john fish]

Hi,

 

Does anyone have experience with linux (RHEL5.5) + EMC AX4-5i ?

 

I have 4 virtual disks in EMC, but /proc/partitions shows 16 .. lot of them are not accessible ,

and also I get kernel errors:

 

end_request: I/O error, dev sdc, sector 52428792
Buffer I/O error on device sdc, logical block 6553599
sd 0:0:0:2: Device not ready: <6>: Current: sense key: Not Ready
    Add. Sense: Logical unit not ready, manual intervention required

end_request: I/O error, dev sdc, sector 0
Buffer I/O error on device sdc, logical block 0
Buffer I/O error on device sdc, logical block 1
Buffer I/O error on device sdc, logical block 2
sd 0:0:0:2: Device not ready: <6>: Current: sense key: Not Ready
    Add. Sense: Logical unit not ready, manual intervention required

end_request: I/O error, dev sdc, sector 0
sd 0:0:0:3: Device not ready: <6>: Current: sense key: Not Ready
    Add. Sense: Logical unit not ready, manual intervention required

end_request: I/O error, dev sdd, sector 0
sd 0:0:0:3: Device not ready: <6>: Current: sense key: Not Ready
    Add. Sense: Logical unit not ready, manual intervention required

end_request: I/O error, dev sdd, sector 0
sd 0:0:0:3: Device not ready: <6>: Current: sense key: Not Ready
    Add. Sense: Logical unit not ready, manual intervention required

Thanks in advance..

[Mike Christie]

On 08/04/2010 02:25 AM, john fish wrote:
> Hi,
>
> Does anyone have experience with linux (RHEL5.5) + EMC AX4-5i ?
>
> I have 4 virtual disks in EMC, but /proc/partitions shows 16 .. lot of them
> are not accessible ,
> and also I get kernel errors:
>
> end_request: I/O error, dev sdc, sector 52428792
> Buffer I/O error on device sdc, logical block 6553599
> sd 0:0:0:2: Device not ready:<6>: Current: sense key: Not Ready
> Add. Sense: Logical unit not ready, manual intervention required

We normally see these when the target has multiple controllers and one
of the controllers is in passive mode where it would normally be used to
fail over to, or when one controller is being upgraded or when some
management operation is being executed on a controller.