我有一台机器，我们称之为 HOST，它通过 NFSv4 导出 /home。它还运行多个虚拟机，包括一个我们称之为 SAMBA 的虚拟机，它安装 NFSv4 共享，然后通过 Samba 通过不同的网络将其重新导出（是的，我知道不建议这样做）到 Windows 7 客户端。
在 HOST 上，/etc/exports 如下：
/exports X.X.X.0/24(rw,fsid=0,root_squash,no_all_squash,crossmnt)
/exports/home X.X.X.0/24(rw,fsid=1,root_squash,no_all_squash)
但是我还有只读绑定挂载，我将其添加到其中，以便为用户提供对文件系统其他地方的 rsynced 备份目录的只读访问权限，因此命令mount打印：
/dev/mapper/vg_home-home on /home type ext4 (rw)
/home on /exports/home type none (rw,bind)
/backup/home/user1 on /exports/home/user1/BACKUP type none (ro,bind)
/backup/home/user2 on /exports/home/user2/BACKUP type none (ro,bind)
...
Samba VM，SAMBA，可以很好地安装这些：
X.X.X.X:/home /home nfs4 rw,sync,hard,bg 0 0
此外，任何登录 SAMBA 的用户都可以访问他的主目录和绑定挂载在 HOST 上的 BACKUP 子目录。Windows 7 客户端可以正常访问用户主目录，但如果它们尝试进入其主目录的 BACKUP 子目录，则会收到以下消息：
BACKUP is not accessible. Access is denied.
一些相关smb.conf参数：
strict locking = no
security = ads
domain = DOMAIN.ADS.SERVER
[homes]
comment = Home Directories
browseable = no
writable = yes
create mask = 0600
directory mask = 0700
valid users = DOMAIN\%S
我的 中没有unix extensions或链接相关的选项smb.conf。
我对此感到困惑，因为我希望 Samba 服务器看到的 NFS 文件系统与 shell 看到的完全相同。此外，我不希望 Samba 服务器能够区分 BACKUP 子目录与任何其他子目录，因为它被绑定安装在 NFS 导出下的另一台机器上。
权限包括：
dr-x------. user1 user1 system_u:object_r:nfs_t:s0 备份
- HOST是CentOS 6.7
- SAMBA 从 CentOS 6.7 开始具有 samba-3.6.23
我该如何设置以便我的用户可以访问他们的只读绑定备份？
绑定挂载在 /home/userX 还是 /exports/home/userX 上有区别吗？
编辑
关于桑巴：
smbclient '\\localhost\user1' -c 'lcd /tmp; cd BACKUP/2016-06-09/user1; get test.txt;' -U user1
结果是成功访问文件并将其复制到 /tmp。标准条目出现在日志文件中。
在 Windows 客户端上，log level = 3这是在资源管理器中尝试输入 BACKUP 的结果：
[2016/06/11 11:21:59.865002, 3] smbd/process.c:1609(process_smb)
Transaction 4046 of length 118 (0 toread)
[2016/06/11 11:21:59.865120, 3] smbd/process.c:1414(switch_message)
switch message SMBtconX (pid 3216) conn 0x0
[2016/06/11 11:21:59.865220, 3] lib/access.c:338(allow_access)
Allowed connection from 132.216.24.231 (132.216.24.231)
[2016/06/11 11:21:59.865284, 3] smbd/service.c:872(make_connection_snum)
Connect path is '/tmp' for service [IPC$]
[2016/06/11 11:21:59.865341, 3] smbd/vfs.c:102(vfs_init_default)
Initialising default vfs hooks
[2016/06/11 11:21:59.865375, 3] smbd/vfs.c:128(vfs_init_custom)
Initialising custom vfs hooks from [/[Default VFS]/]
[2016/06/11 11:21:59.865471, 3] smbd/service.c:1114(make_connection_snum)
REMOTE_WINDOWS_COMPUTER (XXX.XXX.XXX.XXX) connect to service IPC$ initially as user user1 (uid=XXXX, gid=XXXX) (pid 3216)
[2016/06/11 11:21:59.865512, 3] smbd/reply.c:871(reply_tcon_and_X)
tconX service=IPC$
[2016/06/11 11:21:59.866538, 3] smbd/process.c:1609(process_smb)
Transaction 4047 of length 76 (0 toread)
[2016/06/11 11:21:59.866593, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2dfa00
[2016/06/11 11:21:59.866644, 3] smbd/error.c:81(error_packet_set)
error packet at smbd/trans2.c(4291) cmd=50 (SMBtrans2) NT_STATUS_INVALID_HANDLE
[2016/06/11 11:21:59.867219, 3] smbd/process.c:1609(process_smb)
Transaction 4048 of length 128 (0 toread)
[2016/06/11 11:21:59.867259, 3] smbd/process.c:1414(switch_message)
switch message SMBntcreateX (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:21:59.887101, 3] smbd/filename.c:1120(get_real_filename_full_scan)
scan dir didn't open dir [BACKUP]
[2016/06/11 11:21:59.887179, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [BACKUP/desktop.ini] [/home/user1]
[2016/06/11 11:21:59.893101, 3] smbd/vfs.c:963(check_reduced_name)
check_reduced_name: couldn't get realpath for BACKUP/desktop.ini
[2016/06/11 11:21:59.893176, 3] smbd/filename.c:1365(filename_convert)
filename_convert: check_name failed for name BACKUP/desktop.ini with NT_STATUS_ACCESS_DENIED
[2016/06/11 11:21:59.893221, 3] smbd/error.c:81(error_packet_set)
error packet at smbd/nttrans.c(552) cmd=162 (SMBntcreateX) NT_STATUS_ACCESS_DENIED
[2016/06/11 11:21:59.893287, 3] smbd/process.c:1609(process_smb)
Transaction 4049 of length 76 (0 toread)
[2016/06/11 11:21:59.893327, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2dfa00
[2016/06/11 11:21:59.893376, 3] smbd/error.c:81(error_packet_set)
error packet at smbd/trans2.c(4291) cmd=50 (SMBtrans2) NT_STATUS_INVALID_HANDLE
[2016/06/11 11:21:59.893458, 3] smbd/process.c:1609(process_smb)
Transaction 4050 of length 80 (0 toread)
[2016/06/11 11:21:59.893495, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:21:59.893540, 3] smbd/trans2.c:5288(call_trans2qfilepathinfo)
call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1004
[2016/06/11 11:21:59.893575, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [.] [/home/user1]
[2016/06/11 11:21:59.893604, 3] smbd/vfs.c:1057(check_reduced_name)
check_reduced_name: . reduced to /home/user1
[2016/06/11 11:21:59.893646, 3] smbd/trans2.c:5432(call_trans2qfilepathinfo)
call_trans2qfilepathinfo . (fnum = -1) level=1004 call=5 total_data=0
[2016/06/11 11:21:59.894161, 3] smbd/process.c:1609(process_smb)
Transaction 4051 of length 104 (0 toread)
[2016/06/11 11:21:59.894226, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans (pid 3216) conn 0x7ff16a2dfa00
[2016/06/11 11:21:59.894273, 3] smbd/ipc.c:560(handle_trans)
trans <\PIPE\MsFteWds> data=0 params=0 setup=2
[2016/06/11 11:21:59.894308, 3] smbd/ipc.c:511(named_pipe)
named pipe command on <MsFteWds> name
[2016/06/11 11:21:59.894332, 3] smbd/ipc.c:546(named_pipe)
unknown named pipe: setup 0x53 setup1=0
[2016/06/11 11:21:59.894390, 3] smbd/error.c:81(error_packet_set)
error packet at smbd/ipc.c(548) cmd=37 (SMBtrans) NT_STATUS_NOT_SUPPORTED
[2016/06/11 11:21:59.894457, 3] smbd/process.c:1609(process_smb)
Transaction 4052 of length 128 (0 toread)
[2016/06/11 11:21:59.894518, 3] smbd/process.c:1414(switch_message)
switch message SMBntcreateX (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:21:59.913098, 3] smbd/filename.c:1120(get_real_filename_full_scan)
scan dir didn't open dir [BACKUP]
[2016/06/11 11:21:59.913169, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [BACKUP/desktop.ini] [/home/user1]
[2016/06/11 11:21:59.919103, 3] smbd/vfs.c:963(check_reduced_name)
check_reduced_name: couldn't get realpath for BACKUP/desktop.ini
[2016/06/11 11:21:59.919172, 3] smbd/filename.c:1365(filename_convert)
filename_convert: check_name failed for name BACKUP/desktop.ini with NT_STATUS_ACCESS_DENIED
[2016/06/11 11:21:59.919215, 3] smbd/error.c:81(error_packet_set)
error packet at smbd/nttrans.c(552) cmd=162 (SMBntcreateX) NT_STATUS_ACCESS_DENIED
[2016/06/11 11:21:59.919282, 3] smbd/process.c:1609(process_smb)
Transaction 4053 of length 80 (0 toread)
[2016/06/11 11:21:59.919321, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:21:59.919357, 3] smbd/trans2.c:5288(call_trans2qfilepathinfo)
call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1005
[2016/06/11 11:21:59.919389, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [.] [/home/user1]
[2016/06/11 11:21:59.919417, 3] smbd/vfs.c:1057(check_reduced_name)
check_reduced_name: . reduced to /home/user1
[2016/06/11 11:21:59.919452, 3] smbd/trans2.c:5432(call_trans2qfilepathinfo)
call_trans2qfilepathinfo . (fnum = -1) level=1005 call=5 total_data=0
[2016/06/11 11:21:59.929420, 3] smbd/process.c:1609(process_smb)
Transaction 4054 of length 94 (0 toread)
[2016/06/11 11:21:59.929495, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:21:59.929527, 3] smbd/trans2.c:5288(call_trans2qfilepathinfo)
call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1004
[2016/06/11 11:21:59.929561, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [BACKUP] [/home/user1]
[2016/06/11 11:21:59.929594, 3] smbd/vfs.c:1057(check_reduced_name)
check_reduced_name: BACKUP reduced to /home/user1/BACKUP
[2016/06/11 11:21:59.929632, 3] smbd/trans2.c:5432(call_trans2qfilepathinfo)
call_trans2qfilepathinfo BACKUP (fnum = -1) level=1004 call=5 total_data=0
[2016/06/11 11:21:59.931360, 3] smbd/process.c:1609(process_smb)
Transaction 4055 of length 94 (0 toread)
[2016/06/11 11:21:59.931416, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:21:59.931451, 3] smbd/trans2.c:5288(call_trans2qfilepathinfo)
call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1005
[2016/06/11 11:21:59.931486, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [BACKUP] [/home/user1]
[2016/06/11 11:21:59.931519, 3] smbd/vfs.c:1057(check_reduced_name)
check_reduced_name: BACKUP reduced to /home/user1/BACKUP
[2016/06/11 11:21:59.931553, 3] smbd/trans2.c:5432(call_trans2qfilepathinfo)
call_trans2qfilepathinfo BACKUP (fnum = -1) level=1005 call=5 total_data=0
[2016/06/11 11:21:59.933423, 3] smbd/process.c:1609(process_smb)
Transaction 4056 of length 104 (0 toread)
[2016/06/11 11:21:59.933472, 3] smbd/process.c:1414(switch_message)
switch message SMBntcreateX (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:21:59.933510, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [BACKUP] [/home/user1]
[2016/06/11 11:21:59.933544, 3] smbd/vfs.c:1057(check_reduced_name)
check_reduced_name: BACKUP reduced to /home/user1/BACKUP
[2016/06/11 11:21:59.943087, 3] smbd/error.c:81(error_packet_set)
error packet at smbd/error.c(161) cmd=162 (SMBntcreateX) NT_STATUS_ACCESS_DENIED
[2016/06/11 11:21:59.943202, 3] smbd/process.c:1609(process_smb)
Transaction 4057 of length 128 (0 toread)
[2016/06/11 11:21:59.943256, 3] smbd/process.c:1414(switch_message)
switch message SMBntcreateX (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:21:59.965099, 3] smbd/filename.c:1120(get_real_filename_full_scan)
scan dir didn't open dir [BACKUP]
[2016/06/11 11:21:59.965169, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [BACKUP/desktop.ini] [/home/user1]
[2016/06/11 11:21:59.974096, 3] smbd/vfs.c:963(check_reduced_name)
check_reduced_name: couldn't get realpath for BACKUP/desktop.ini
[2016/06/11 11:21:59.974158, 3] smbd/filename.c:1365(filename_convert)
filename_convert: check_name failed for name BACKUP/desktop.ini with NT_STATUS_ACCESS_DENIED
[2016/06/11 11:21:59.974191, 3] smbd/error.c:81(error_packet_set)
error packet at smbd/nttrans.c(552) cmd=162 (SMBntcreateX) NT_STATUS_ACCESS_DENIED
[2016/06/11 11:21:59.975314, 3] smbd/process.c:1609(process_smb)
Transaction 4058 of length 128 (0 toread)
[2016/06/11 11:21:59.975390, 3] smbd/process.c:1414(switch_message)
switch message SMBntcreateX (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:21:59.999096, 3] smbd/filename.c:1120(get_real_filename_full_scan)
scan dir didn't open dir [BACKUP]
[2016/06/11 11:21:59.999163, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [BACKUP/desktop.ini] [/home/user1]
[2016/06/11 11:22:00.008092, 3] smbd/vfs.c:963(check_reduced_name)
check_reduced_name: couldn't get realpath for BACKUP/desktop.ini
[2016/06/11 11:22:00.008153, 3] smbd/filename.c:1365(filename_convert)
filename_convert: check_name failed for name BACKUP/desktop.ini with NT_STATUS_ACCESS_DENIED
[2016/06/11 11:22:00.008204, 3] smbd/error.c:81(error_packet_set)
error packet at smbd/nttrans.c(552) cmd=162 (SMBntcreateX) NT_STATUS_ACCESS_DENIED
[2016/06/11 11:22:00.009283, 3] smbd/process.c:1609(process_smb)
Transaction 4059 of length 104 (0 toread)
[2016/06/11 11:22:00.009349, 3] smbd/process.c:1414(switch_message)
switch message SMBntcreateX (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:22:00.009388, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [BACKUP] [/home/user1]
[2016/06/11 11:22:00.009422, 3] smbd/vfs.c:1057(check_reduced_name)
check_reduced_name: BACKUP reduced to /home/user1/BACKUP
[2016/06/11 11:22:00.009455, 3] smbd/dosmode.c:159(unix_mode)
unix_mode(BACKUP) returning 0600
[2016/06/11 11:22:00.015099, 3] smbd/open.c:555(open_file)
Error opening file BACKUP (NT_STATUS_ACCESS_DENIED) (local_flags=0) (flags=0)
[2016/06/11 11:22:00.015177, 3] smbd/error.c:81(error_packet_set)
error packet at smbd/error.c(161) cmd=162 (SMBntcreateX) NT_STATUS_ACCESS_DENIED
[2016/06/11 11:22:00.017178, 3] smbd/process.c:1609(process_smb)
Transaction 4060 of length 94 (0 toread)
[2016/06/11 11:22:00.017255, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:22:00.017287, 3] smbd/trans2.c:5288(call_trans2qfilepathinfo)
call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1004
[2016/06/11 11:22:00.017322, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [BACKUP] [/home/user1]
[2016/06/11 11:22:00.017359, 3] smbd/vfs.c:1057(check_reduced_name)
check_reduced_name: BACKUP reduced to /home/user1/BACKUP
[2016/06/11 11:22:00.017393, 3] smbd/trans2.c:5432(call_trans2qfilepathinfo)
call_trans2qfilepathinfo BACKUP (fnum = -1) level=1004 call=5 total_data=0
[2016/06/11 11:22:00.018232, 3] smbd/process.c:1609(process_smb)
Transaction 4061 of length 94 (0 toread)
[2016/06/11 11:22:00.018271, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:22:00.018299, 3] smbd/trans2.c:5288(call_trans2qfilepathinfo)
call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1005
[2016/06/11 11:22:00.018331, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [BACKUP] [/home/user1]
[2016/06/11 11:22:00.018363, 3] smbd/vfs.c:1057(check_reduced_name)
check_reduced_name: BACKUP reduced to /home/user1/BACKUP
[2016/06/11 11:22:00.018396, 3] smbd/trans2.c:5432(call_trans2qfilepathinfo)
call_trans2qfilepathinfo BACKUP (fnum = -1) level=1005 call=5 total_data=0
dir BACKUP这是在 CMD shell 中尝试执行一次的结果：
[2016/06/11 11:28:25.456492, 3] smbd/process.c:1609(process_smb)
Transaction 4116 of length 80 (0 toread)
[2016/06/11 11:28:25.456573, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:28:25.456626, 3] smbd/trans2.c:5288(call_trans2qfilepathinfo)
call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1004
[2016/06/11 11:28:25.456678, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [.] [/home/user1]
[2016/06/11 11:28:25.456713, 3] smbd/vfs.c:1057(check_reduced_name)
check_reduced_name: . reduced to /home/user1
[2016/06/11 11:28:25.456789, 3] smbd/trans2.c:5432(call_trans2qfilepathinfo)
call_trans2qfilepathinfo . (fnum = -1) level=1004 call=5 total_data=0
[2016/06/11 11:28:25.457686, 3] smbd/process.c:1609(process_smb)
Transaction 4117 of length 80 (0 toread)
[2016/06/11 11:28:25.457736, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:28:25.457765, 3] smbd/trans2.c:5288(call_trans2qfilepathinfo)
call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1005
[2016/06/11 11:28:25.457816, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [.] [/home/user1]
[2016/06/11 11:28:25.457846, 3] smbd/vfs.c:1057(check_reduced_name)
check_reduced_name: . reduced to /home/user1
[2016/06/11 11:28:25.457881, 3] smbd/trans2.c:5432(call_trans2qfilepathinfo)
call_trans2qfilepathinfo . (fnum = -1) level=1005 call=5 total_data=0
[2016/06/11 11:28:25.458843, 3] smbd/process.c:1609(process_smb)
Transaction 4118 of length 74 (0 toread)
[2016/06/11 11:28:25.458893, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:28:25.458924, 3] smbd/trans2.c:3629(call_trans2qfsinfo)
call_trans2qfsinfo: level = 261
[2016/06/11 11:28:25.458956, 3] smbd/trans2.c:3046(smbd_do_qfsinfo)
smbd_do_qfsinfo: level = 261
[2016/06/11 11:28:25.460001, 3] smbd/process.c:1609(process_smb)
Transaction 4119 of length 94 (0 toread)
[2016/06/11 11:28:25.460039, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:28:25.460067, 3] smbd/trans2.c:5288(call_trans2qfilepathinfo)
call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1004
[2016/06/11 11:28:25.460108, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [BACKUP] [/home/user1]
[2016/06/11 11:28:25.460150, 3] smbd/vfs.c:1057(check_reduced_name)
check_reduced_name: BACKUP reduced to /home/user1/BACKUP
[2016/06/11 11:28:25.460184, 3] smbd/trans2.c:5432(call_trans2qfilepathinfo)
call_trans2qfilepathinfo BACKUP (fnum = -1) level=1004 call=5 total_data=0
[2016/06/11 11:28:25.461046, 3] smbd/process.c:1609(process_smb)
Transaction 4120 of length 94 (0 toread)
[2016/06/11 11:28:25.461090, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:28:25.461117, 3] smbd/trans2.c:5288(call_trans2qfilepathinfo)
call_trans2qfilepathinfo: TRANSACT2_QPATHINFO: level = 1005
[2016/06/11 11:28:25.461149, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [BACKUP] [/home/user1]
[2016/06/11 11:28:25.461181, 3] smbd/vfs.c:1057(check_reduced_name)
check_reduced_name: BACKUP reduced to /home/user1/BACKUP
[2016/06/11 11:28:25.461214, 3] smbd/trans2.c:5432(call_trans2qfilepathinfo)
call_trans2qfilepathinfo BACKUP (fnum = -1) level=1005 call=5 total_data=0
[2016/06/11 11:28:25.462643, 3] smbd/process.c:1609(process_smb)
Transaction 4121 of length 74 (0 toread)
[2016/06/11 11:28:25.462680, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:28:25.462708, 3] smbd/trans2.c:3629(call_trans2qfsinfo)
call_trans2qfsinfo: level = 258
[2016/06/11 11:28:25.462735, 3] smbd/trans2.c:3046(smbd_do_qfsinfo)
smbd_do_qfsinfo: level = 258
[2016/06/11 11:28:25.467185, 3] smbd/process.c:1609(process_smb)
Transaction 4122 of length 104 (0 toread)
[2016/06/11 11:28:25.467235, 3] smbd/process.c:1414(switch_message)
switch message SMBtrans2 (pid 3216) conn 0x7ff16a2e5ee0
[2016/06/11 11:28:25.467274, 3] smbd/trans2.c:2377(call_trans2findfirst)
call_trans2findfirst: dirtype = 16, maxentries = 1366, close_after_first=0, close_if_end = 1 requires_resume_key = 1 level = 0x102, max_data_bytes = 16384
[2016/06/11 11:28:25.467320, 3] smbd/vfs.c:905(check_reduced_name)
check_reduced_name [BACKUP/*] [/home/user1]
[2016/06/11 11:28:25.473939, 3] smbd/vfs.c:963(check_reduced_name)
check_reduced_name: couldn't get realpath for BACKUP/*
[2016/06/11 11:28:25.473999, 3] smbd/filename.c:1365(filename_convert)
filename_convert: check_name failed for name BACKUP/* with NT_STATUS_ACCESS_DENIED
[2016/06/11 11:28:25.474041, 3] smbd/error.c:81(error_packet_set)
error packet at smbd/trans2.c(2430) cmd=50 (SMBtrans2) NT_STATUS_ACCESS_DENIED
在 Windows 上，显示“未找到文件”。
还值得一提的是，这些都不能解决问题：
unix extensions = no
follow symlinks = yes
wide links = yes