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46.2.3. Configuring kdump on the Command Line
46.2.3.1. Configuring the Memory Usage 复制链接链接已复制到粘贴板!
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To configure the amount of memory that is reserved for the
kdump
kernel on x86, AMD64, and Intel 64 architectures, open the /boot/grub/grub.conf
file as root
and add the crashkernel=<size>M@16M
parameter to the list of kernel options as shown in Example 46.1, “Sample /boot/grub/grub.conf
file”.
Important
Unless the system has enough memory, the
kdump
crash recovery service will not be operational. For information on minimum memory requirements, refer to the Red Hat Enterprise Linux comparison chart. When kdump
is enabled, the minimum memory requirements increase by the amount of memory reserved for it. This value is determined by the user and on x86, AMD64, and Intel 64 architectures, it defaults to 128 MB plus 64 MB for each TB of physical memory (that is, a total of 192 MB for a system with 1 TB of physical memory).
Example 46.1. Sample /boot/grub/grub.conf
file