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Hi, DOC-35489 only
partionally approaches the problem. I have it too, on a passive/active IBM
DS4000 array and RHEL5.5. I've excluded from lvm.conf any SAN partitions as per
the note (and also made a new initrd boot, as lvm.conf is included at boot time
as the / partition I have it LVM'ed) , but messages still apears on bootup. They
always dissapear when multipathd service starts and its scsi_dh_rdac discipline
is loaded. Even opened a case with
Redhat, and obtained the same response (but not workaround): "it's
entirely harmless, they are normal". Alvaro De:
linux-cluster-bounces@xxxxxxxxxx [mailto:linux-cluster-bounces@xxxxxxxxxx] En nombre de Martinez-Sanchez, Raul Hi Balaji, According to RedHat
documentation some Storage Array Devices configured in active/passive mode and
using multipath will display this I/O error messages, so this might also be
your case (see https://access.redhat.com/kb/docs/DOC-35489),
this link indicates that the messages are harmless and can be avoided following
its instructions. The logs you sent do
not indicate anything related to fencing, so you might need to send the
relevant info for that. Cheers, Raúl From:
linux-cluster-bounces@xxxxxxxxxx [mailto:linux-cluster-bounces@xxxxxxxxxx] On Behalf Of Balaji S 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
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