What is difference in sbd's crashdump and fence_kdump agent
This document (000020899) is provided subject to the disclaimer at the end of this document.
Environment
SUSE Linux Enterprise High Availability Extension
Situation
What is difference in sbd's crashdump and fence_kdump agent
Resolution
sbd's crashdump feature and fence_kdump fence agent are not alternatives to each other. They are basically for different purposes.
If users want to have kdump generated upon fencing, just use sbd's crashdump. There's no need to use fence_kdump.
In case users want to use a different fencing mechanism such as ipmi rather than sbd, and want to have kdump successfully generated upon kernel crashing before ipmi cuts the power of the machine, use fence_kdump together with ipmi.
fence_kdump agent is not a fencing mechanism and must not be used alone. It does not achieve fencing and it doesn't even trigger kdump.
If users want to have kdump generated upon fencing, just use sbd's crashdump. There's no need to use fence_kdump.
In case users want to use a different fencing mechanism such as ipmi rather than sbd, and want to have kdump successfully generated upon kernel crashing before ipmi cuts the power of the machine, use fence_kdump together with ipmi.
fence_kdump agent is not a fencing mechanism and must not be used alone. It does not achieve fencing and it doesn't even trigger kdump.
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:000020899
- Creation Date: 20-Dec-2022
- Modified Date:19-Apr-2023
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- SUSE Linux Enterprise High Availability Extension
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