Unmount a rbind mount without affecting the original mount
Asked on serverfault but didn’t get enough attention, so reposted here, with the hope some people here know the answer.
linux-kernel
Linux kernel action upon init process exiting
Say I am writing my own init program running on a Linux kernel.
Everything is a file?
In Linux, every single entity is considered as FILE. If I do vim <cd-Name> then, vim will open the directory content into it’s editor, because, it do not differentiate between file and directories.
How to find the connection between tap interface and its file descriptor?
I have a qemu VM started by an orchestration script, which creates transient tap interfaces. When I inspect the command line arguments of the qemu-system-x86_64 process, then I can see, that the process connects to already opened tap interface with the file descriptor 27:
How large are the “watermark” memory reservations on my system?
swappiness This control is used to define how aggressive the kernel will swap memory pages. Higher values will increase aggressiveness, lower values decrease the amount of swap. A value of 0 instructs the kernel not to initiate swap until the amount of free and file-backed pages is less than the high water mark in a … Read more
Are Linux kernel threads really kernel processes?
I’ve read in many places that Linux creates a kernel thread for each user thread in a Java VM. (I see the term “kernel thread” used in two different ways:
What is a “subreaper” process?
The word “subreaper” is used in some answers. Searching Google also turn up entries where the word is “just used”.
What is a tainted Linux kernel?
Under certain conditions, the Linux kernel may become tainted. For example, loading a proprietary video driver into the kernel taints the kernel. This condition may be visible in system logs, kernel error messages (oops and panics), and through tools such as lsmod, and remains until the system is rebooted.
Can ps display only non kernel processes on Linux?
How can I ask ps to display only user processes and not kernel threads?
How to list all loadable kernel modules?
I’m looking for a few kernel modules to load i2c-dev and i2c-bcm2708. But the modprobe command returns: