Ubuntu Linux系统下无法向WD My Cloud NAS写入数据的问题求助

大家好，我最近入手了一台新的WD My Cloud NAS，已经通过FTP应用把旧OMV机器上的文件迁移过去了，但现在遇到了麻烦——没法在我的Ubuntu笔记本上正确挂载NAS并获得写入权限。我把相关的配置文件内容、操作过程和错误信息都整理出来了，希望能得到大家的帮助。理想情况是不用切换到root权限就能写入，不过暂时用root作为临时方案也能接受。

我的/etc/fstab配置 #

~: cat /etc/fstab

# /etc/fstab: static file system information.

#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/nvme0n1p2 during installation
UUID=28376594-b7ab-42c1-bb8c-71a3c5a799e1 /               ext4    errors=remount-ro 0       1
# /boot/efi was on /dev/nvme0n1p1 during installation
UUID=E00C-C026  /boot/efi       vfat    umask=0077      0       1
/swapfile                                 none            swap    sw              0       0

//192.168.1.221/Public /media/big-turtle cifs rw,user,guest,vers=3.0

挂载操作及权限检查 #

之后我尝试重新挂载NAS，过程如下：

~: sudo umount /media/big-turtle
umount: /media/big-turtle: not mounted.

~: mount /media/big-turtle
mount: (hint) your fstab has been modified, but systemd still uses
the old version; use 'systemctl daemon-reload' to reload.

进入挂载点查看权限信息：

~: cd /media/big-turtle
big-turtle: ll
total 4
drwxr-xr-x 2 dan  dan     0 Jul  4 13:16  ./
drwxr-xr-x 6 root root 4096 Jul  4 13:51  ../
drwxr-xr-x 2 dan  dan     0 Jul  4 13:25  Movies/
drwxr-xr-x 2 dan  dan     0 Jul  4 12:22 'Screen Art'/
drwxr-xr-x 2 dan  dan     0 Jul  4 10:26  Television/

big-turtle: whoami
dan

big-turtle: ll -n
total 4
drwxr-xr-x 2 1000 1000    0 Jul  4 13:16  ./
drwxr-xr-x 6    0    0 4096 Jul  4 13:51  ../
drwxr-xr-x 2 1000 1000    0 Jul  4 13:25  Movies/
drwxr-xr-x 2 1000 1000    0 Jul  4 12:22 'Screen Art'/
drwxr-xr-x 2 1000 1000    0 Jul  4 10:26  Television/

big-turtle: id
uid=1000(dan) gid=1000(dan) groups=1000(dan),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),121(lpadmin),131(lxd),132(sambashare)

写入操作失败的情况 #

不管是用普通用户还是sudo权限尝试移动文件到NAS，都提示权限不足：

big-turtle: mv ~/Downloads/Go.1999.720p.BluRay.999MB.HQ.x265.10bit-GalaxyRG\[TGx]/Go.mkv /media/big-turtle/Movies
mv: cannot create regular file '/media/big-turtle/Movies/Go.mkv': Permission denied

big-turtle: sudo mv ~/Downloads/Go.1999.720p.BluRay.999MB.HQ.x265.10bit-GalaxyRG\[TGx]/Go.mkv /media/big-turtle/Movies
[sudo] password for dan:
mv: cannot create regular file '/media/big-turtle/Movies/Go.mkv': Permission denied

另外尝试查看文件属性时也报错：

big-turtle: lsattr /media/big-turtle
lsattr: Operation not supported While reading flags on /media/big-turtle/Television
lsattr: Operation not supported While reading flags on /media/big-turtle/Movies
lsattr: Operation not supported While reading flags on /media/big-turtle/Screen Art

备注：内容来源于stack exchange，提问作者Dan Forbes