Portable userspace virtual filesystem switch

• Autorzy: Faber Ł. , Boryczko K.
• Języki publikacji: EN

Abstrakty

EN

Multiple different filesystems — including disk-based, network, distributed, abstract — are an integral part of every operating system. They are usually written as kernel modules and abstracted to the user via a virtual filesystem switch. In this paper, we analyze the feasibility of reimplementing the virtual filesystem switch as a userspace daemon and applicability of this approach in real-life usage. Such reimplementation will require a way to virtualize processes behavior related to filesystem operations. The problem is non-trivial, as we as-sume limited capabilities of the VFS switch implemented in userspace. We present a layered architecture comprising of a monitoring process, the VFS abstraction and real filesystem implementations. All working in userspace. Then, we evaluate this solution in four areas: portability, feasibility, usability, and performance. Our results demonstrate possible gains in the use of a userspace-based approach with monolithic kernels, but also underline problems that are encountered in this approach.

Słowa kluczowe

EN

userspace virtual filesystem; operating systems; ptrace; FUSE

• Wydawca: Wydawnictwa AGH
• Czasopismo: Computer Science
• Rocznik: 2013
• Tom: Vol. 14 (3)
• Strony: 345--365
• Opis fizyczny: Bibliogr. 19 poz. rys., tab.

Twórcy

autor

Faber Ł.

• AGH University of Science and Technology, Krakow

autor

Boryczko K.

• AGH University of Science and Technology, Krakow

Bibliografia

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