- What is the NSFS filesystem? - Unix Linux Stack Exchange
The nsfs doesn't get listed in proc filesystems (while proc does), so it cannot be explicitly mounted mount -t nsfs namespaces fails with "unknown filesystem type" This is, as nsfs as it is tightly interwoven with the proc filesystem
- What sort of file thing do namespace files point to?
These files are presented as symlinks They point to a pseudo-file belonging to the pseudo-filesystem nsfs Not including specialized namespace operations (done with clone(2), setns(2), unshare(2), ioctl_ns(2) etc ), the only allowed operations I know of on those files are to open (and close) them, to have a reference when manipulating namespages, or to mount them, to be sure to keep a
- Namespace management with ip netns (iproute2)
I can't explain it in detail here Suffice to say that a namespace once created will (partition some kernel resource such as network, and) exist as long as something is using it Mostly two thing will use it: processes, or mountpoints in the special pseudo-filesystem nsfs Once they stop using it or disappear, the namespace also disappears
- How do you debug inability to delete a Namespace after ip netns add . . .
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- Inodes on run filesystem is full - Unix Linux Stack Exchange
Inode on run is getting full for all our nodes that are being managed by EKS, especially for small instances like t3a medium below output from df -i Filesystem Inodes IUsed IFree IUse% Mounte
- How to identify what capabilities are required for a command?
You don't tell how you've created this network namespace, so I assume it has been created through ip netns add , so it's a bind-mounted network namespace pointing into nsfs (namespace filesystem) anyway Since run netns is usually root-territory, you probably need CAP_DAC_OVERRIDE or CAP_DAC_READ_SEARCH too, see also capabilities(7) man
- Namespace numbers in proc - Unix Linux Stack Exchange
They're the inode numbers of files implemented by the nsfs filesystem, which could be opened and used with the setns(2) to associate a process with a namespace You can have a look at fs nsfs c :
- How do I find all interfaces that have been configured in Linux . . .
For this you have to know how those namespaces are existing: as long as a resource keep them up A resource here can be a process (actually a process' thread), a mount point or an open file descriptor (fd) Those resources are all referenced in proc and point to an abstract pseudo-file in the nsfs pseudo-filesystem enumerating all namespaces
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