Kexec manual

kexec_file_load() The kexec_file_load() system call is similar to kexec_load(), but it takes a different set of arguments. It reads the kernel to be loaded from the file referred to by the file descriptor kernel_fd, and the initrd (initial RAM disk) to be loaded from file referred to by the file descriptor initrd_fd. kexec-loader is a Linux based bootloader that uses kexec to start the kernel of your choice. It fits on a MB floppy, supports most block devices supported by Linux and is easy to use. kexec-loader supports reading GRUB configuration files, this allows kexec-loader to be used as a drop-in replacement for GRUB by merely setting the GRUB installation path. The kexec_load () system call loads a new kernel that can be executed later by reboot (2). The flags argument is a bit mask that controls the operation of the call. The following values can be specified in flags: KEXEC_ON_CRASH (since Linux ) Execute the new kernel automatically on a system crash. This "crash kernel" is loaded into an.

The CONFIG_KEXEC option enables the kexec system call. Usage Using kexec. consists of (1) loading the kernel to be rebooted to into memory, and (2) actually rebooting to the pre-loaded kernel. To load a kernel, the syntax is as follows: kexec-l kernel-image--append=command-line-options--initrd=initrd-image. By default, kexec-loader will attempt to find a GRUB installation and copy any compatible boot targets from it. This will work for most Linux systems, but you can manually specify boot targets in www.doorway.ru instead if desired. Doing so will disable the GRUB autodetection unless grub-autodetect is explicitly set to 'on'. timeout kexec-loader is a Linux based bootloader that uses kexec to start the kernel of your choice. It fits on a MB floppy, supports most block devices supported by Linux and is easy to use. kexec-loader supports reading GRUB configuration files, this allows kexec-loader to be used as a drop-in replacement for GRUB by merely setting the GRUB installation path.

This will work for most Linux systems, but you can manually specify boot targets in www.doorway.ru instead if desired. Doing so will disable the GRUB. For more information, see the kexec(8) manual page. Copyright © , , Oracle and/or its affiliates. All rights reserved. Legal Notices. System administrator manually adding public key to the MOK list In case of a system crash, kdump uses kexec to boot into a second kernel (a capture.