I am delighted to announce the release of virtio-fs v0.3, a shared file system that lets virtual machines access a directory tree on the host. This release is based on QEMU 4.1.0 and Linux 5.3-rc3.
For more information about virtio-fs: https://virtio-fs.gitlab.io/ This is a development release aimed at early adopters of virtio-fs. Work is being done to upstream the code into Linux and QEMU. We expect to stop publishing virtio-fs releases once the code has been merged by these upstream projects. Where to get it: https://gitlab.com/virtio-fs/linux/-/tags/virtio-fs-v0.3 https://gitlab.com/virtio-fs/qemu/-/tags/virtio-fs-v0.3 Changes: * Please note that the mount syntax has changed to: # mount -t virtio_fs myfs /mnt -o ... The old syntax was "mount -t virtio_fs none /mnt -o tag=myfs,...". * virtiofsd --fd=FDNUM takes a listen socket file descriptor number. File descriptor passing is an alternative way to manage the vhost-user UNIX domain socket. The parent process no longer needs to wait for virtiofsd to create the listen socket before spawning the VM. * virtiofsd --syslog logs to syslog(2) instead of stderr. Useful for unifying logging and when the virtiofsd process is not being supervised. * virtiofsd --thread-pool-size=NUM sets the maximum number of worker threads for FUSE request processing. This can be used to control the host queue depth. The default is 64. * Performance improvements and bug fixes. Note for Kata Containers: the new kernel is not compatible with existing Kata Containers releases due to the mount syntax change. To try it out, please apply the following kata-runtime patch: https://gitlab.com/virtio-fs/runtime/commit/a2e44de817e438c02a495cf258039774527e3178 Kata Containers patches for virtio-fs v0.3 are under development and will be submitted to Kata soon. Thanks to the following people for contributing code and to many more for helping the virtio-fs effort: Dr. David Alan Gilbert <dgilb...@redhat.com> Eric Ren <renz...@linux.alibaba.com> Eryu Guan <eg...@linux.alibaba.com> Ganesh Maharaj Mahalingam <ganesh.mahalin...@intel.com> Jiufei Xue <jiufei....@linux.alibaba.com> Liu Bo <bo....@linux.alibaba.com> Masayoshi Mizuma <m.miz...@jp.fujitsu.com> Miklos Szeredi <mszer...@redhat.com> Peng Tao <tao.p...@linux.alibaba.com> piaojun <piao...@huawei.com> Sebastien Boeuf <sebastien.bo...@intel.com> Stefan Hajnoczi <stefa...@redhat.com> Vivek Goyal <vgo...@redhat.com> Xiaoguang Wang <xiaoguang.w...@linux.alibaba.com>
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