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Executing rescan-scsi-bus.sh -i ( LIP flag ) caused Linux OS to Hang (Doc ID 1645143.1)

Last updated on MAY 26, 2021

Applies to:

Oracle Cloud Infrastructure - Version N/A and later
Oracle VM - Version 3.2.1 and later
Linux OS - Version Oracle Linux 5.0 and later
Linux x86-64

Symptoms

RAC Node rebooted after executing SCSI rescan command.

Changes

Customer was rescanning Storage Paths after he lost one path to Storage Unit:

Apr 3 09:48:46 <HOST> kernel: rport-7:0-0: blocked FC remote port time out: removing target and saving binding
Apr 3 09:48:46 <HOST> kernel: sd 7:0:0:0: rejecting I/O to offline device
Apr 3 09:48:46 <HOST> kernel: sd 7:0:0:1: rejecting I/O to offline device
Apr 3 09:48:46 <HOST> kernel: sd 7:0:0:1: rejecting I/O to offline device
Apr 3 09:48:46 <HOST> kernel: device-mapper: multipath: Failing path 8:32.
Apr 3 09:48:46 <HOST> kernel: sd 7:0:0:5: rejecting I/O to offline device
Apr 3 09:48:46 <HOST> kernel: sd 7:0:0:5: rejecting I/O to offline device
Apr 3 09:48:46 <HOST> kernel: device-mapper: multipath: Failing path 8:96.
Apr 3 09:48:46 <HOST> kernel: sd 7:0:0:9: rejecting I/O to offline device
Apr 3 09:48:46 <HOST> kernel: device-mapper: multipath: Failing path 65:16.
Apr 3 09:48:46 <HOST> kernel: sd 7:0:0:10: rejecting I/O to offline device
Apr 3 09:48:46 <HOST> multipathd: 8:32: mark as failed
Apr 3 09:48:46 <HOST> multipathd: aocrvote: remaining active paths: 1
Apr 3 09:48:46 <HOST> multipathd: 65:16: mark as failed
Apr 3 09:48:46 <HOST> multipathd: EMC: remaining active paths: 1

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
 Scenario
 What is LIP ( Loop Initialization Protocol ) ?
 What LIP Reset may cause?
 Conclusion


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