On Thu, 5 Oct 2023 at 22:30, Vivek Goyal <vgoyal@xxxxxxxxxx> wrote: > > virtiofs filesystem is mounted using a "tag" which is exported by the > virtiofs device. virtiofs driver knows about all the available tags but > these are not exported to user space. > > People have asked these tags to be exported to user space. Most recently > Lennart Poettering has asked for it as he wants to scan the tags and mount > virtiofs automatically in certain cases. > > https://gitlab.com/virtio-fs/virtiofsd/-/issues/128 > > This patch exports tags through sysfs. One tag is associated with each > virtiofs device. A new "tag" file appears under virtiofs device dir. > Actual filesystem tag can be obtained by reading this "tag" file. > > For example, if a virtiofs device exports tag "myfs", a new file "tag" > will show up here. > > /sys/bus/virtio/devices/virtio<N>/tag > > # cat /sys/bus/virtio/devices/virtio<N>/tag > myfs > > Signed-off-by: Vivek Goyal <vgoyal@xxxxxxxxxx> Hi Vivek, This needs something under Documentation/. While the interface looks good to me, I think we need an ack on that from the virtio maintainer. Thanks, Miklos
