Setting 'crashkernel=auto' results in zero bytes of reserved memory for kdump kernel.
Issue
- Kdump service fails to start with below message.
- Memory reservation for kdump kernel is failing.
less var/log/dmesg | grep -i kexec
[ 0.000000] kexec: crashkernel=auto resulted in zero bytes of reserved memory.
Environment
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- x86_64, ppc64, s390x architectures
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