Ublk is a new framework available since Linux v6.0+ for creating virtual block devices using io_uring in user space. It was written and has been maintained by a long time Linux kernel contributor Ming Lei and improved by others. As of right now it's marked experimental and its APIs might change in the future.
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It seems no matter how long I work with the command line, every once in a while I find handy utilities I've never encountered before. Most people have heard about the bird coreutils , that's where utilities such as echo , cat , and others come from. But did you know about moreutils ?