cw-mkramfs#

NAME

cw-mkramfs -- Tool to create an initial root file system image.

Note

This command used to be scyld-mkramfs. The legacy scyld-* command is deprecated and will be removed in a future release.

USAGE

cw-mkramfs: [-h] [OPTION] ... `` ``-o, -output PATH

STANDARD OPTIONS

-h, --help: Print usage message and exit. Ignore trailing args, parse and ignore preceding args.

--update, -u BOOT: Space-separated list of boot configurations to update.
--output, -o PATH: Where to write the initramfs.
--image, -i IMGID: Uses cw-modimg to install the clusterware-tools package inside the image IMGID, and then executes cw-mkramfs inside the image to create the root file system image.
--kver VERSION: Specify the kernel version to use, overriding the default of the head node's current kernel (viewed with uname -r).

ADVANCED OPTIONS

--stripped: Exclude all network drivers not loaded on some node.
--drivers NAMES: Space-separated list of additional kernel drivers to include.
--modules NAMES: Space-separated list of additional dracut modules to include.
--ramfs-conf PATH: Use a config file from a non-standard location PATH.
--base-url URL: Specify the base URL of the ClusterWare REST API.

EXAMPLES

cw-mkramfs --update OpenMPI-Slurm-Boot

Rebuild the initramfs used by the OpenMPI-Slurm-Boot boot configuration.

cw-mkramfs --update OpenMPI-Slurm-Boot --drivers mlx4_core

Rebuild the initramfs used by the OpenMPI-Slurm-Boot boot configuration after adding the mlx4_core driver (and its dependencies).

cw-mkramfs --update OpenMPI-Slurm-Boot --kver 5.14.0-503.40.1.el9_5.x86_64

Rebuild the initramfs in the boot config after an administrator installs a new kernel into the image that the boot config is using. The --kver argument is needed if there are multiple kernels installed in the image.

RETURN VALUES

Upon successful completion, cw-mkramfs returns 0. On failure, an error message is printed to stderr and cw-mkramfs returns 1.