On Sat, 30 Nov 2019, Ankele zhang wrote: > Hello All: > How to execute shell before rootfs mounted on CentOS7. > On CentOS6, we can modify init shell in initramfs.img to do something > we need. But on CentOS7 my beloved init has be changed to systemd and > systemd has no shell script.
CentOS 7 uses Dracut [1] for its initramfs. With Dracut, you can use `rd.break=mount` to the kernel command-line to instruct Dracut to launch a shell just before it mounts the new root filesystem. See the dracut.cmdline(7) manpage [2] for further details. [1] https://dracut.wiki.kernel.org/ [2] http://man7.org/linux/man-pages/man7/dracut.cmdline.7.html _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel
