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Linus Torvalds has given the world version 4.11 of the Linux kernel.
"So after that extra week with an rc8, things were pretty calm," Torvalds posted to the Linux Kernel Mailing List, adding "I'm much happier releasing a final 4.11 now.
So what do we get this time around? Among other things, Linux is now better at hot-swapping solid state disks and can now do journaling on RAID 4/5/6 volumes. While we're talking storage, there's also support for the OPAL self-encrypting disk drive standard.
The kernel has also gained support for the Shared Memory Communications over RDMA (SMC-R) (SMC-R) spec, an IBM invention that allows virtual machines to share memory and therefore speeds up communications between the machines, helps with load balancing and doesn't hurt when clustering Linux boxen.
Enterprise users and gamers will both be happy that the kernel adds improved support for Intel's Turbo Boost Max Technology 3.0, technology that lets a CPU figure out which of its cores is fastest and then increase its clock speed in response to a critical workload's needs
(Score: 2) by sjames on Tuesday May 02 2017, @03:56PM
What the AC said. Of course, the old workaround was to do a rebuild if the RAID wasn't shut down cleanly. While it was the right thing given no journal, it did result in many hours of degraded I/O performance, and it was a largish time window where it would be bad to have a disk (that was just subjected to an unclean shutdown) to fail.
Long term, I expect RAID to give way to advanced filesystems like ZFS and BTRFS that not only have the redundancy but also maintain checksums so they can tell which copy went bad in situations short of total disk failure, among other advantages.