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A Linux or Oracle VM Server Reports Failed Paths and Potentially Reboots shortly thereafter (Doc ID 2098361.1)

Last updated on MARCH 01, 2023

Applies to:

Oracle VM - Version 3.0.1 and later
Linux OS - Version Oracle Linux 4.4 and later
Oracle Cloud Infrastructure - Version N/A and later
Linux x86-64

Symptoms

On Oracle VM, or Oracle Linux making use of both multipathing and Oracle Clustered File System version 2 (OCFS2) , the following kind of error messages are getting reported :
Jan 19 17:34:50 <hostname> multipathd: checker failed path 8:144 in map 3600144f0559804b90000144f81b80c00
Jan 19 17:34:50 <hostname> multipathd: 3600144f0559804b90000144f81b80c00: remaining active paths: 2

 

These initial messages mean that a path to a storage device has failed - These messages indicate a problem in the connectivity to the storage, but the error messages carry on with :
Jan 19 17:34:50 <hostname> kernel: device-mapper: multipath: Failing path 8:80.
Jan 19 17:34:50 <hostname> kernel: device-mapper: multipath: Failing path 8:144.
Jan 19 17:34:50 <hostname> kernel: device-mapper: multipath: Failing path 8:176.

 

Meaning that several paths of the multipath device are now failed, and end with :
Jan 19 17:34:51 <hostname> multipathd: 8:16: mark as failed
Jan 19 17:34:51 <hostname> multipathd: 3600144f0560e58220000144f81b80c00: remaining active paths: 0

 

At this stage, there are no options to communicate with the storage server, and the o2cb cluster stack (backing the OCFS2 filesystem) starts reporting late heartbeats on the heartbeat device :
Jan 19 17:36:07 <hostname> o2hbmonitor: Last ping 88259 msecs ago on /dev/dm-2, 0004FB0000050000D1D733CD98F00AF7

 

The server potentially reboots at the end of this sequence.

Cause

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In this Document
Symptoms
Cause
Solution

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