CRtools 0.1 released

The OpenVZ blog has the announcement of the release of CRtools 0.1. "It is our ultimate goal to merge all bits and pieces of OpenVZ to the mainstream Linux kernel. It's not a big secret that we failed miserably trying to merge the checkpoint/restore [CPT] functionality (and yes, we have tried more than once). The fact that everyone else failed as well soothes the pain a bit, but is not really helpful. The reason is simple: CPT code is big, complex, and touches way too many places in the kernel. So we* came up with an idea to implement most of CPT stuff in user space, i.e. as a separate program not as a part of the Linux kernel. In practice this is impossible because some kernel trickery is still required here and there, but the whole point was to limit kernel intervention to the bare minimum. Guess what? It worked even better that we expected. As of today, after about a year of development, up to 90% of the stuff that is needed to be in the kernel is already there, and the rest is ready and seems to be relatively easy to merge."

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