[Virtio-fs] mount failed in virtio_fs dev 5.1

[Dr. David Alan Gilbert]

* piaojun (piaojun at huawei.com) wrote:
> Hi Dave,
> 
> It works when adding "-o rootmode=040000,user_id=0,group_id=0,dax".

OK, great.  Hmm I wonder which option is the required one.

Dave

> Thanks,
> Jun
> 
> On 2019/7/23 17:01, Dr. David Alan Gilbert wrote:
> > * 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
> > .
> > 
--
Dr. David Alan Gilbert / dgilbert at redhat.com / Manchester, UK