[ntfs-3g-devel] why failed to mount n NTFS block device based on LVM and formated by VM(Win7-Guest, CentOS7-Host)?

[x. <hua...@fo...>]

hi,

    my steps are:
    1, lvcreate, make a lv, named test-pure-ntfs, vg is centos7(consisted of sdb);
    2, virsh attach-disk, attach test-pure-ntfs to an VM(Windows-Server2008R2x64);
    3, make this new disk online and format it(MBR+NTFS);
    4, then this disk can rw normally within VM;
    5, ntfs-3g, mount test-pure-ntfs on a existed path(/mnt/ntfs/), but failed!

    so, why?
    do not ntfs-3g support my case?

==========here are parts of my actions==========
[root@localhost mnt]# mount -t ntfs-3g /dev/centos7/test-pure-ntfs /mnt/ntfs/
NTFS signature is missing.
Failed to mount '/dev/mapper/centos7-test--pure--ntfs': invalid parameter
The device '/dev/mapper/centos7-test--pure--ntfs' doesn't seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?

[root@localhost mnt]# fdisk -l |grep NTFS |grep pure
/dev/mapper/centos7-test--pure--ntfs1            2048   104853503    52425728    7  HPFS/NTFS/exFAT
[root@localhost mnt]# lsblk |grep pure
└─centos7-test--pure--ntfs 253:4    0    50G  0 lvm  
[root@localhost mnt]# lvscan |grep pure
  ACTIVE            '/dev/centos7/test-pure-ntfs' [50.00 GiB] inherit

[root@localhost mnt]# ntfs-3g /dev/centos7/test-pure-ntfs /mnt/ntfs/  <try again, equals to mount~~~ above>
NTFS signature is missing.
Failed to mount '/dev/mapper/centos7-test--pure--ntfs': invalid parameter
The device '/dev/mapper/centos7-test--pure--ntfs' doesn't seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?

thanks for anyone who check this email :)

regards!