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James Bottomley Speaks

Mar 08, 2010, 21:07 (0 Talkback[s])
(Other stories by Alex Handy)

[ Thanks to Linux User & Developer magazine for this link. ]

"I think the most exciting change is that after years of arguing, the DRBD (Distributed Replicating Block Device) finally got accepted into the mainline. It's the foundation of a lot of high availability and disaster recovery solutions (including our own SLE HA extensions).

"The next new piece of technology is I/O bandwidth controllers. There had been about two competing ideas about how this should be done, and it took two rounds of discussion at the Linux file system and storage summit and finally a troubleshooting session at the kernel summit to get final agreement. (I/O controllers allow for much better fine-grained control over how I/O bandwidth is allocated to virtual machines.)

"Finally, the ftrace subsystem acquired dynamic tracing in 2.6.33. That's a step to taking it a lot closer to rivalling the functionality of Sun's dtrace."

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