User-mode Linux: Difference between revisions

Revision as of 21:49, 3 February 2015

Revision as of 19:56, 21 April 2015

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In UML environments, host and guest kernel versions need not match, so it is entirely possible to test a "[[bleeding edge]]" version of Linux in User-mode on a system running a much older kernel. UML also allows kernel debugging to be performed on one machine, where other kernel debugging tools (such as [[kgdb]]) require two machines connected with a [[null modem]] cable.

Some [[web hosting]] providers such as [[Bytemark]] offer UML-powered [[virtual private server|virtual servers]] for lower prices than true [[dedicated hosting service|dedicated servers]]. Each customer has [[Root user|root]] access on what appears to be their own system, while in reality one physical computer is shared between many people.

[[libguestfs]] has supported a UML backend since version 1.24<ref>[http://rwmj.wordpress.com/2013/08/11/experimental-user-mode-linux-backend-for-libguestfs/#content]</ref> as an alternative to using QEMU or KVM.