Jaderné noviny – 17. 10. 2013: Systémy souborů ve jmenných prostorech (diskuse)

[Vantomas]

Jmenné prostory... Že by nějaká předzvěst kontejnerů na úrovni jádra přímo v systému? Nebo jaké využití existují pro takovou věc?

[luky]

Kde jste byl poslednich 5 let? http://en.wikipedia.org/wiki/LXC

[asdfasfasfasf]

cituji: A namespace is just how you label and organize information. In whatever OS you are used to, the primary namespace you work within is the filesystem saved on your hard drive. Another common namespace is the www* namespace of websites. Both of these systems illustrate how important namespaces are. A badly organized hard drive means you cant find your own files. The designers of Plan 9 decided to put a powerful new namespace paradigm at the heart of the system. There are several important principles you must know.

Your namespace is not simply a map of the local filesystem You are free to alter your namespace, and altering your namespace does not alter the resources your namespace is based on You may work within multiple different namespaces at once Each process you control has its own view of namespace which might be different from yours

Learning to work with multiple independent namespaces is like the difference between riding in a train on a set of preset tracks, and flying in an airplane in three dimensions. You can't get lost if you follow the tracks, but you also don't have freedom of where to go.

nejlepe ma NS (namespace) zvladnute plan9 from bell labs.

http://plan9.bell-labs.com/sys/doc/names.html

http://homepage.cs.uri.edu/~thenry/resources/unix_art/plan9.html

http://www.quanstro.net/plan9/srvtalk/srv.html

[Sten]

Na kontejnery se to již používá, ale tam nejspíš nebude docházet k zde řešeným problémům s mountpointy. Tohle je určené spíš pro per-user sandboxing na sdíleném systému, dovedl bych si představit něco ve stylu Androidu (každá aplikace má své UID a může být dost detailně nastaveno a jádrem vynuceno, co smí a co ne).