Executing kdump on RHEL5 KVM guest hangs
Issue
- When taking a kdump on RHEL5.5 KVM guests under heavy load by "echo c > /proc/sysrq-trigger", following message is output to console and stops, and dump cannot be captured.
Classic2B-VM1 login: SysRq : Trigger a crashdump ... BIOS reported wrong ACPI idfor the processor ACPI Exception (evxface-0545): AE_NOT_EXIST, Removing notify handler [20060707] Real Time Clock Driver v1.12ac hpet_acpi_add: no address or irqs in _CRS Non-volatile memory driver v1.2 Linux agpgart interface v0.101 (c) Dave Jones Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled - kdump does not work properly on RHEL5.5 kvm guest. The last message on console is as follows when kdump(2nd kernel) hangs:
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled - kdump kernel/initrd fails to boot correctly on a KVM guest which uses the virtio network device. the boot stops at this line:
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports,
Environment
- Host: Red Hat Enterprise Linux 6
- kernel version: 2.6.71.el6.x86_64
- Guest: Red Hat Enterprise Linux 5
-
kernel version: 2.6.18-164.el5
-
kernel version: 2.6.18-194.el5
- kernel version: 2.6.18-238.el5
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