1. Make sure you have libvirt tools installed on your KVM host (dom0 for Xen):
#yum install libvirt -y
2. Make sure virsh utility is installed:
#virsh --version
2.0.0
3. Login to the Guest OS.
4. Let the VM wait before rebooting on kernel panic:
#sysctl kernel.panic=10000 (number of seconds to wait)
5. Wait until the Guest OS is crashed. 6. Gather VM dump with virsh:
#virsh dump domain_name --memory-only --format=kdump-zlib
FYI: If your virsh utility doesn’t support --format option, just skip it:
#virsh dump domain_name --memory-only
7.Upload the dump onto the dump server.
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