I have plenty of files in /mnt/data yet nfs-server do not share most of them while share some

Installing and Using OpenWrt
1

Hello. I try to create nfs-share (I used this guide [OpenWrt Wiki] Network File System (NFS)) with video files captured bt motion (Yes I could build motion with support of IP-Camera :-)) and all seems ok until I mount it on WIndows 10 PC with command like:

mount -o anon 192.168.5.1:/mnt/data R:

It is mounted successfully but I see no files cause folder is empty in Windows 10.

I created test file test.txt and suddenly I can see it! While all other files are invnsible to me. It is strange becasue according to ls -l command


root@OpenWrt:/mnt/data/ipcam$ ls -l
-rw-r--r--    1 nobody   nogroup    1043691 Oct 15 14:32 15-10-2025-14:29:52.mkv
-rw-r--r--    1 nobody   nogroup    5659253 Oct 15 14:37 15-10-2025-14:33:54.mkv
-rw-r--r--    1 nobody   nogroup     285411 Oct 15 14:40 15-10-2025-14:38:04.mkv
-rw-r--r--    1 nobody   nogroup     578255 Oct 15 14:47 15-10-2025-14:45:03.mkv
-rw-r--r--    1 nobody   nogroup    1579121 Oct 15 14:57 15-10-2025-14:53:53.mkv
-rw-r--r--    1 nobody   nogroup      99986 Oct 15 14:59 15-10-2025-14:57:33.mkv
-rw-r--r--    1 nobody   nogroup    4440717 Oct 15 15:03 15-10-2025-14:59:57.mkv
-rw-r--r--    1 nobody   nogroup    1267247 Oct 15 15:08 15-10-2025-15:03:21.mkv
-rw-r--r--    1 nobody   nogroup     584251 Oct 15 15:13 15-10-2025-15:10:37.mkv
-rw-r--r--    1 nobody   nogroup     602030 Oct 15 15:17 15-10-2025-15:14:39.mkv
-rw-r--r--    1 nobody   nogroup    1596801 Oct 15 15:25 15-10-2025-15:22:23.mkv
-rw-r--r--    1 nobody   nogroup    1673961 Oct 15 15:43 15-10-2025-15:40:17.mkv
-rw-r--r--    1 nobody   nogroup    3350785 Oct 15 15:56 15-10-2025-15:51:21.mkv
-rw-r--r--    1 nobody   nogroup    3535026 Oct 15 15:58 15-10-2025-15:55:59.mkv
-rw-r--r--    1 nobody   nogroup     563130 Oct 15 16:06 15-10-2025-16:03:35.mkv
-rw-r--r--    1 nobody   nogroup    2449897 Oct 15 16:23 15-10-2025-16:20:03.mkv
-rw-r--r--    1 nobody   nogroup    7119430 Oct 15 16:27 15-10-2025-16:23:09.mkv
-rw-r--r--    1 nobody   nogroup   11751203 Oct 15 16:36 15-10-2025-16:31:45.mkv
-rw-r--r--    1 nobody   nogroup     599312 Oct 15 16:40 15-10-2025-16:38:03.mkv
-rw-r--r--    1 nobody   nogroup    1639334 Oct 15 16:44 15-10-2025-16:41:22.mkv
-rw-r--r--    1 nobody   nogroup    1098851 Oct 15 16:47 15-10-2025-16:45:48.mkv
-rw-r--r--    1 nobody   nogroup    2408287 Oct 15 17:00 15-10-2025-16:57:00.mkv
-rw-r--r--    1 nobody   nogroup    2557973 Oct 15 17:17 15-10-2025-17:14:10.mkv
-rw-r--r--    1 nobody   nogroup    1333441 Oct 15 17:30 15-10-2025-17:28:26.mkv
-rw-r--r--    1 nobody   nogroup    2412477 Oct 15 17:35 15-10-2025-17:33:13.mkv
-rw-r--r--    1 nobody   nogroup    1075707 Oct 15 17:47 15-10-2025-17:45:25.mkv
-rw-r--r--    1 root     root       7709360 Oct 15 19:19 15-10-2025-19:17:29.mkv
-rw-r--r--    1 root     root       1078122 Oct 15 19:53 15-10-2025-19:51:44.mkv
-rw-r--r--    1 root     root       1646065 Oct 15 20:29 15-10-2025-20:27:05.mkv
-rw-r--r--    1 root     root       1144480 Oct 15 20:34 15-10-2025-20:31:57.mkv
-rw-r--r--    1 root     root      12708617 Oct 15 20:57 15-10-2025-20:55:27.mkv
-rw-r--r--    1 root     root       6414967 Oct 16 07:44 16-10-2025-07:42:23.mkv
-rw-r--r--    1 root     root       1164920 Oct 16 08:15 16-10-2025-08:13:53.mkv
-rw-r--r--    1 root     root       1099468 Oct 16 08:54 16-10-2025-08:52:11.mkv
-rw-r--r--    1 root     root       2381214 Oct 16 09:30 16-10-2025-09:28:06.mkv
-rw-r--r--    1 root     root       2519594 Oct 16 09:47 16-10-2025-09:45:12.mkv
-rw-r--r--    1 root     root       5788689 Oct 16 09:50 16-10-2025-09:48:17.mkv
-rw-r--r--    1 root     root       3494839 Oct 16 10:00 16-10-2025-09:57:29.mkv
-rw-r--r--    1 root     root       1569734 Oct 16 10:03 16-10-2025-10:00:55.mkv
-rw-r--r--    1 root     root       5078665 Oct 16 10:06 16-10-2025-10:03:11.mkv
-rw-r--r--    1 root     root       8215040 Oct 16 10:19 16-10-2025-10:15:57.mkv
-rw-r--r--    1 root     root       1109155 Oct 16 10:25 16-10-2025-10:23:07.mkv
-rw-r--r--    1 root     root       1178668 Oct 16 10:49 16-10-2025-10:47:42.mkv
-rw-r--r--    1 root     root       1123215 Oct 16 10:56 16-10-2025-10:54:39.mkv
-rw-r--r--    1 root     root       6393616 Oct 16 11:08 16-10-2025-11:05:41.mkv
-rw-r--r--    1 root     root       7991210 Oct 16 11:13 16-10-2025-11:08:46.mkv
-rw-r--r--    1 root     root       2285535 Oct 16 11:20 16-10-2025-11:17:47.mkv
-rw-r--r--    1 root     root       1096311 Oct 16 11:25 16-10-2025-11:23:02.mkv
-rw-r--r--    1 root     root       1148413 Oct 16 11:28 16-10-2025-11:26:35.mkv
-rw-r--r--    1 root     root       7092008 Oct 16 11:38 16-10-2025-11:33:48.mkv
-rw-r--r--    1 root     root       2854066 Oct 16 11:42 16-10-2025-11:38:13.mkv
-rw-r--r--    1 root     root       1341856 Oct 16 11:45 16-10-2025-11:43:16.mkv
-rw-r--r--    1 root     root       2253755 Oct 16 11:48 16-10-2025-11:45:27.mkv
-rw-r--r--    1 root     root       1088157 Oct 16 11:50 16-10-2025-11:48:26.mkv
-rw-r--r--    1 root     root      11969403 Oct 16 11:58 16-10-2025-11:55:28.mkv
-rw-r--r--    1 root     root       1379695 Oct 16 12:05 16-10-2025-12:03:11.mkv
-rw-r--r--    1 root     root       1673589 Oct 16 12:08 16-10-2025-12:06:09.mkv
-rw-r--r--    1 root     root       5756521 Oct 16 12:50 16-10-2025-12:46:39.mkv
-rw-r--r--    1 root     root       5865338 Oct 16 13:10 16-10-2025-13:06:12.mkv
-rw-r--r--    1 root     root       1080160 Oct 16 13:16 16-10-2025-13:14:14.mkv
-rw-r--r--    1 root     root       1076196 Oct 16 13:22 16-10-2025-13:20:50.mkv
-rw-r--r--    1 root     root       2357225 Oct 16 13:27 16-10-2025-13:23:54.mkv
-rw-r--r--    1 root     root       4787934 Oct 16 13:32 16-10-2025-13:28:24.mkv
-rw-r--r--    1 root     root      13574557 Oct 16 13:49 16-10-2025-13:45:35.mkv
-rw-r--r--    1 root     root       1173345 Oct 16 13:58 16-10-2025-13:56:55.mkv
-rw-r--r--    1 root     root       1180669 Oct 16 14:01 16-10-2025-13:59:25.mkv
-rw-r--r--    1 root     root       1421460 Oct 16 14:04 16-10-2025-14:02:44.mkv
-rw-r--r--    1 root     root       2513361 Oct 16 14:12 16-10-2025-14:10:09.mkv
-rw-r--r--    1 root     root       4716285 Oct 16 14:16 16-10-2025-14:13:22.mkv
-rw-r--r--    1 root     root       1145522 Oct 16 14:28 16-10-2025-14:26:18.mkv
-rw-r--r--    1 root     root       1181618 Oct 16 14:32 16-10-2025-14:30:10.mkv
-rw-r--r--    1 root     root       1091627 Oct 16 14:40 16-10-2025-14:38:09.mkv
-rw-r--r--    1 root     root      21788428 Oct 16 14:54 16-10-2025-14:51:19.mkv
-rw-r--r--    1 root     root      32363562 Oct 16 14:58 16-10-2025-14:54:46.mkv
-rw-r--r--    1 root     root       1124312 Oct 16 15:10 16-10-2025-15:08:22.mkv
-rw-r--r--    1 root     root       1198422 Oct 16 15:14 16-10-2025-15:12:27.mkv
-rw-r--r--    1 root     root       2636760 Oct 16 15:18 16-10-2025-15:14:41.mkv
-rw-r--r--    1 root     root       1071657 Oct 16 15:33 16-10-2025-15:31:52.mkv
-rw-r--r--    1 root     root       3663775 Oct 16 15:38 16-10-2025-15:35:36.mkv
-rw-r--r--    1 root     root       1190682 Oct 16 15:49 16-10-2025-15:47:49.mkv
-rw-r--r--    1 root     root       3436490 Oct 16 15:57 16-10-2025-15:53:03.mkv
-rw-r--r--    1 root     root      25889311 Oct 16 16:00 16-10-2025-15:57:52.mkv
-rw-r--r--    1 root     root       1136057 Oct 16 16:14 16-10-2025-16:12:02.mkv
-rw-r--r--    1 root     root       3167201 Oct 16 16:18 16-10-2025-16:16:39.mkv
-rw-r--r--    1 root     root       3337105 Oct 16 16:40 16-10-2025-16:37:02.mkv
-rw-r--r--    1 root     root       2002621 Oct 16 16:44 16-10-2025-16:41:23.mkv
-rw-r--r--    1 root     root      31493655 Oct 16 16:59 16-10-2025-16:56:01.mkv
-rw-r--r--    1 root     root      19703883 Oct 16 17:03 16-10-2025-16:59:01.mkv
-rw-r--r--    1 root     root       4872941 Oct 16 17:05 16-10-2025-17:03:21.mkv
-rw-r--r--    1 root     root       1145261 Oct 16 17:38 16-10-2025-17:36:33.mkv
-rw-r--r--    1 root     root             9 Oct 15 18:58 test.txt

all files have similar flags. You can also see some files owned by nobody:nogroup. It was my attempt to make them visible by changing their attributes. But it was no success and also I had no success with chmod -R 777 /mnt/data/ipcam

here is my /etc/exports

/mnt 192.168.5.0/24(fsid=0,ro,sync,no_subtree_check,all_squash)
/mnt/data 192.168.5.0/24(rw,sync,no_subtree_check,all_squash)root@OpenWrt:/mnt/data$

here is exportfs -v


/mnt            192.168.5.0/24(sync,wdelay,hide,no_subtree_check,fsid=0,sec=sys,ro,secure,root_squash,all_squash)
/mnt/data       192.168.5.0/24(sync,wdelay,hide,no_subtree_check,sec=sys,rw,secure,root_squash,all_squash)

I look through this guide exports(5): NFS server export table - Linux man page but with no success also. I wonder is it possible to solve this problem?

May be create user like nfsuser and map folder to him, then connect with this user credentials? Specify strictly secure protocol, like sec=krb5p? I just do not know why some files are visible, but other files do not.

Many thanks for any help!

UPD: I can now conclude that it is entirely Windows 10 fault (or windows 10 and nfs settings together for that matter) for I try to mount this share from Ubuntu with command like:

mount 192.168.5.1:/mnt/data/ipcam ~/jopa

and all files are visible! But Windows 10 has not many options for mounting…

2

Consider using SMB

Either with lightweigth ksmbd: https://openwrt.org/docs/guide-user/services/nas/ksmbd
or the full blown SAMBA package: https://openwrt.org/docs/guide-user/services/nas/cifs.server

2 Likes
3

I guess this is my option, thanks. May be nfs protocol was never meant for windows and poorly supported in this OS. Yet, I have heard that they want to remove SMB anonimous from Windows and also that SMB is less secure and advanced that NFS. But, well…

1 Like
4

There should be an NFS client in the windows options never used it so not sure if that really works.

5

For several years I use NFS client build in Windows 10 and, to tell the truth, it works fine with Ubuntu nfs shares version 3.

for example, here is mount output from cmd:

W:       \\192.168.0.70\media\windows           UID=-2, GID=-2
                                                rsize=524288, wsize=524288
                                                mount=soft, timeout=10.0
                                                retry=1, locking=yes
                                                fileaccess=755, lang=ANSI
                                                casesensitive=no
                                                сек.=sys

So, I also expected same behaviour with OpenWRT nfs share version 4, yet I was mistaken. I switch to SMB, I guess

6
  • You need Windows 10/11 Professional or higher, seems you have that
  • UID=-2? It seems you don't setup the Unix user as Windows instructions suggest
1 Like
7

I was thinking that UID and GID -2 means anon in Linux?

But, I must say: omg. No, even, OMFG!

I did not notice earlier, but look at filenames:

-rwxrwxrwx    1 root     root      31493655 Oct 16 16:59 16-10-2025-16:56:01.mkv
-rwxrwxrwx    1 root     root      19703883 Oct 16 17:03 16-10-2025-16:59:01.mkv
-rwxrwxrwx    1 root     root       4872941 Oct 16 17:05 16-10-2025-17:03:21.mkv

they have COLONS in their names. It is OK in Linux, but windows system DO NOT allow colons in filenames. OMG, I can not not imagine that solution was so simple and so close :slight_smile:

I renamed one file with colons to test_vid.mkv, remounted share and here we are - Windows can see file. OMG :slight_smile:

Well, since topic still exists I hope some more experienced people can guide me with configs of nfs-server. Here is my config which I believe setup for maximum security:

/mnt 192.168.5.0/24(fsid=0,ro,all_squash,anonuid=65534,anongid=65534,secure)
/mnt/data/ipcam 192.168.5.0/24(ro,all_squash,anonuid=65534,anongid=65534,secure,sync)

May be I missed something? Would very appreciate suggestions and guides.

2 Likes
8

Good catch!

(Another quirk you may have not experienced since this is for cam storage, Windows creates *:Zone.Identifier hidden files relating to the orgin of the file. Oddly, they contain a colon.)

1 Like
9

may be in some RING0 secret spy space Windows CAN understand files with colons, and they are used for some malevolent antisocial secret services activity. Sorry for this theory :slight_smile:

1 Like