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Re: [Linux-cluster] Cluster Failover Failed




Hi,

Btw, how many HBAs are present in your box ? . Problem is with scsi3 only ?.
Refer https://access.redhat.com/kb/docs/DOC-2991 , then set the filter.
Also, I would suggest you to open ticket with Linux vendor if IO errors are belongs to Active paths.

Pointed IO errors are belongs to disk that in passive paths group ?. you can verify the same in multipath-ll output .

regards,

On Sun, Jun 19, 2011 at 10:03 PM, dOminic <share2dom gmail com> wrote:
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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