[Virtio-fs] mount failed in virtio_fs dev 5.1

[piaojun]

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.

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
> .
>