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Re: [Linux-cluster] Cluster Failover Failed



Hi Balaji,

Yes, the reported message is harmless ... However, you can try following 

1) I would suggest you to set the filter setting in lvm.conf to properly scan your mpath* devices and local disks. 
2) Enable blacklist section in multipath.conf  eg:

blacklist {
       devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
       devnode "^hd[a-z]"
}

# multipath -v2 

Observe the box. Check whether that helps ...


Regards, 


On Wed, Jun 15, 2011 at 12:16 AM, Balaji S <skjbalaji gmail com> wrote:
Hi,
In my setup implemented 10 tow node cluster's which running mysql as cluster service, ipmi card as fencing device.

In my /var/log/messages i am keep getting the errors like below,

Jun 14 12:50:48 hostname kernel: end_request: I/O error, dev sdm, sector 0
Jun 14 12:50:48 hostname kernel: sd 3:0:2:2: Device not ready: <6>: Current: sense key: Not Ready
Jun 14 12:50:48 hostname kernel:     Add. Sense: Logical unit not ready, manual intervention required
Jun 14 12:50:48 hostname kernel: 
Jun 14 12:50:48 hostname kernel: end_request: I/O error, dev sdn, sector 0
Jun 14 12:50:48 hostname kernel: sd 3:0:2:4: Device not ready: <6>: Current: sense key: Not Ready
Jun 14 12:50:48 hostname kernel:     Add. Sense: Logical unit not ready, manual intervention required
Jun 14 12:50:48 hostname kernel: 
Jun 14 12:50:48 hostname kernel: end_request: I/O error, dev sdp, sector 0
Jun 14 12:51:10 hostname kernel: sd 3:0:0:1: Device not ready: <6>: Current: sense key: Not Ready
Jun 14 12:51:10 hostname kernel:     Add. Sense: Logical unit not ready, manual intervention required
Jun 14 12:51:10 hostname kernel: 
Jun 14 12:51:10 hostname kernel: end_request: I/O error, dev sdc, sector 0
Jun 14 12:51:10 hostname kernel: printk: 3 messages suppressed.
Jun 14 12:51:10 hostname kernel: Buffer I/O error on device sdc, logical block 0
Jun 14 12:51:10 hostname kernel: sd 3:0:0:2: Device not ready: <6>: Current: sense key: Not Ready
Jun 14 12:51:10 hostname kernel:     Add. Sense: Logical unit not ready, manual intervention required
Jun 14 12:51:10 hostname kernel: 
Jun 14 12:51:10 hostname kernel: end_request: I/O error, dev sdd, sector 0
Jun 14 12:51:10 hostname kernel: Buffer I/O error on device sdd, logical block 0
Jun 14 12:51:10 hostname kernel: sd 3:0:0:4: Device not ready: <6>: Current: sense key: Not Ready
Jun 14 12:51:10 hostname kernel:     Add. Sense: Logical unit not ready, manual intervention required


when i am checking the multipath -ll , this all devices are in passive path.

Environment :

RHEL 5.4 & EMC SAN

Please suggest how to overcome this issue. Support will be highly helpful.
Thanks in Advance
 

--
Thanks,
BSK

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