[Virtio-fs] mount failed in virtio_fs dev 5.1

[Dr. David Alan Gilbert]

* piaojun (piaojun at huawei.com) wrote:
> Hi Dave,
> 
> Thanks for your quick reply, and still mount failed. But I can not get
> some useful message from dmesg.
> 
> # mount -t virtio_fs myfs /mnt/virtiofs/
> mount: wrong fs type, bad option, bad superblock on myfs,
> missing codepage or helper program, or other error
> 
> In some cases useful info is found in syslog - try
> dmesg | tail or so.

This is working for me - but with the latest -dev qemu/virtiofsd as
well; please make sure both are up to date:

I used:

mount -t virtio_fs myfs /sysroot -o rootmode=040000,user_id=0,group_id=0,dax

Dave

> On 2019/7/23 16:31, Dr. David Alan Gilbert wrote:
> > * piaojun (piaojun at huawei.com) wrote:
> >> Hi,
> >>
> >> I got a problem when mounting virtiofs in kernel5.1 as below:
> >>
> >> fuse: loading out-of-tree module taints kernel.
> >> fuse: module verification failed: signature and/or required key missing - tainting kernel
> >> fuse init (API version 7.29)
> >> virtio_fs virtio1: Cache len: 0x80000000 @ 0x180000000
> >> virtio1 initialised, 524288 pages in 12ms
> >> virtio_fs_find_instance: fs->tag myfs, tag /dev/null
> >> virtio-fs: tag </dev/null> not found
> >> Mounting FUSE Control File System...
> >> [/bin/bash]: [mount -t virtio_fs /dev/null /mnt/virtiofs/ -o tag=myfs] return code=[32], execute failed by [root(uid=0)] from [pts/0 (9.4.90.78)]
> >>
> >> And my kernel code is:
> >> https://github.com/rhvgoyal/linux/commits/virtio-fs-dev-5.1
> >>
> >> I wonder if the mount command has been changed?
> > 
> > There was a change that went in last night, I believe the new format is:
> > 
> > mount -t virtio_fs myfs /mnt/virtiofs/
> > 
> > with the tagname going into the device position.
> > 
> > Does that work?
> > 
> > Dave
> > 
> > 
> >> Thanks,
> >> Jun
> >>
> >> _______________________________________________
> >> Virtio-fs mailing list
> >> Virtio-fs at redhat.com
> >> https://www.redhat.com/mailman/listinfo/virtio-fs
> > --
> > Dr. David Alan Gilbert / dgilbert at redhat.com / Manchester, UK
> > .
> > 
--
Dr. David Alan Gilbert / dgilbert at redhat.com / Manchester, UK