Configure XEN Dom0 for a kernel dump
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- Update the server to SLES 10 SP2 and corresponding XEN packages (required). Always review the update notes as it may be necessary to update any SLES Virtual Machines (and Virtual Machine Driver Pack installs on any VMs) prior to the XEN Host (dom0) update; Especially if updating the XEN Host from SLES 10 (pre SP1).
- Configure dom0 for kdump
- Install the Yast2-kdump package on the XEN Host (dom0)
- Configure dom0 for a kernel dump
- From Yast2 > System > Kernel Kdump
- Enable Kdump (keep defaults)
- From Yast2 > System > Boot Loader
- Highlight the XEN kernel, then click Edit
- Cut and paste the crashkernel bootloader argument from the "Optional Kernel Command Line Parameter" section to the "Additional Xen Hypervisor Parameters" section
- Note: As of 12/01/08 makedumpfile currently only supports the "ELF" format and a dumplevel setting of "0". Check /etc/sysconfig/kdump file and verify KDUMP_DUMPLEVEL="0" and KDUMP_DUMPFORMAT="ELF".
- Test by triggering a kernel dump
- Shutdown all VMs and reboot the VM Server
- From a terminal on dom0 run echo c > /proc/sysrq-trigger
- Note: The system will become unresponsive until the core is written. When focus returns, verify that a vmcore has been written to the /var/log/dump directory.
See Troubleshooting a privileged (Dom0) Xen kernel for information on pre-SP2 XEN kernels.
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- Document ID:7001383
- Creation Date:17-SEP-08
- Modified Date:27-APR-12
- SUSESUSE Linux Enterprise Server
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