Kdump fails to capture vmcore using multipath VFC disk as kdump target on IBM POWER9
This document (7022750) is provided subject to the disclaimer at the end of this document.
Environment
SUSE Linux Enterprise Server 12 Service Pack 3 (SLES 12 SP3)
Situation
On IBM POWER9 servers kdump fails to capture the vmcore when using a multipath VFC disk as the kdump target.
Resolution
The solution is to use alternative dump methods like capturing to a
VFC or some other disk without multipath, NFS, SSH, etc.
Cause
This failure occurs because the VFC driver seems to discover the
LUNs, but the vmcore capture process is timing out while waiting
for the mpath mapping of the disk to appear.
Disclaimer
This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.
- Document ID:7022750
- Creation Date: 19-Mar-2018
- Modified Date:03-Mar-2020
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- SUSE Linux Enterprise Server
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