Vivek Goyal <vgoyal@xxxxxxxxxx> writes: > Hi, > > Here are RFC patches for virtio-fs. Looking for feedback on this approach. > > These patches should apply on top of 4.20-rc5. We have also put code for > various components here. > > https://gitlab.com/virtio-fs > > Problem Description > =================== > We want to be able to take a directory tree on the host and share it with > guest[s]. Our goal is to be able to do it in a fast, consistent and secure > manner. Our primary use case is kata containers, but it should be usable in > other scenarios as well. > > Containers may rely on local file system semantics for shared volumes, > read-write mounts that multiple containers access simultaneously. File > system changes must be visible to other containers with the same consistency > expected of a local file system, including mmap MAP_SHARED. > > Existing Solutions > ================== > We looked at existing solutions and virtio-9p already provides basic shared > file system functionality although does not offer local file system semantics, > causing some workloads and test suites to fail. Can you elaborate on this? Is this with 9p2000.L ? We did quiet a lot of work to make sure posix test suite pass on 9p file system. Also was the mount option with cache=loose? -aneesh
