Can't enable cifs shares in v8.1.2

TeHashX · September 26, 2017 at 12:22 PM

I updated Odroid C2 from v8.1.1 to v8.1.2 and can't mount anymore cifs shares (from kodi menu I can mount shares but not with systemctl)

I created /storage/.config/system.d/storage-Media.mount with:

Code

[Unit]
Description=cifs mount script
Requires=network-online.service
After=network-online.service
Before=kodi.service

[Mount]
What=//192.168.5.1/Media
Where=/storage/Media
Options=username=user,password=pass,rw
Type=cifs

[Install]
WantedBy=multi-user.target

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When trying to mount I get

Code

systemctl start storage-Media.mount
Job for storage-Media.mount failed.
See "systemctl status storage-Media.mount" and "journalctl -xe" for details.
systemctl status storage-Media.mount
storage-Media.mount - cifs mount script
   Loaded: loaded (/storage/.config/system.d/storage-Media.mount; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Tue 2017-09-26 14:13:52 EEST; 37s ago
    Where: /storage/Media
     What: //192.168.5.1/Media
  Process: 795 ExecMount=/usr/bin/mount //192.168.5.1/Media /storage/Media -t cifs -o username=user,password=pass,rw (code=exited, status=255)

Sep 26 14:13:52 LibreELEC systemd[1]: Mounting cifs mount script...
Sep 26 14:13:52 LibreELEC systemd[1]: storage-Media.mount: Mount process exited, code=exited status=255
Sep 26 14:13:52 LibreELEC systemd[1]: Failed to mount cifs mount script.
Sep 26 14:13:52 LibreELEC systemd[1]: storage-Media.mount: Unit entered failed state.

journalctl -xe
● storage-Media.mount - cifs mount script
   Loaded: loaded (/storage/.config/system.d/storage-Media.mount; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Tue 2017-09-26 14:13:52 EEST; 37s ago
    Where: /storage/Media
     What: //192.168.5.1/Media
  Process: 795 ExecMount=/usr/bin/mount //192.168.5.1/Media /storage/Media -t cifs -o username=user,password=pass,rw (code=exited, status=255)

Sep 26 14:13:52 LibreELEC systemd[1]: Mounting cifs mount script...
● storage-Media.mount - cifs mount script
● storage-Media.mount - cifs mount script
   Loaded: loaded (/storage/.config/system.d/storage-Media.mount; enabled; vendor preset: disabled)
-- Logs begin at Tue 2017-09-26 14:10:02 EEST, end at Tue 2017-09-26 14:15:36 EEST. --
Sep 26 14:14:26 LibreELEC kernel: i2c i2c-1: token 1, master_no(1) 300K addr 0x51
● storage-Media.mount - cifs mount script
   Loaded: loaded (/storage/.config/system.d/storage-Media.mount; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Tue 2017-09-26 14:15:00 EEST; 53s ago
    Where: /storage/Media
     What: //192.168.5.1/Media
-- Logs begin at Tue 2017-09-26 14:11:12 EEST, end at Tue 2017-09-26 14:16:09 EEST. --
Sep 26 14:14:59 LibreELEC kernel: i2c i2c-1: token 1, master_no(1) 300K addr 0x51
Sep 26 14:14:59 LibreELEC kernel: i2c i2c-1: [aml_i2c_xfer] error ret = -5 (-EIO)
Sep 26 14:14:59 LibreELEC kernel: i2c i2c-1: token 1, master_no(1) 300K addr 0x51
Sep 26 14:14:59 LibreELEC kernel: i2c i2c-1: [aml_i2c_xfer] error ret = -5 (-EIO)
Sep 26 14:14:59 LibreELEC kernel: i2c i2c-1: token 1, master_no(1) 300K addr 0x51
Sep 26 14:14:59 LibreELEC kernel: rtc-pcf8563 1-0051: pcf8563_get_datetime: read error
Sep 26 14:15:00 LibreELEC crond[292]: USER root pid 805 cmd /storage/.config/automount.sh
Sep 26 14:15:00 LibreELEC systemd[1]: storage-Media.mount: Directory /storage/Media to mount over is not empty, mounting anyway.
Sep 26 14:15:00 LibreELEC systemd[1]: Mounting cifs mount script...
Sep 26 14:15:00 LibreELEC systemd[1]: storage-Media.mount: Mount process exited, code=exited status=255
Sep 26 14:15:00 LibreELEC systemd[1]: Failed to mount cifs mount script.
Sep 26 14:15:00 LibreELEC systemd[1]: storage-Media.mount: Unit entered failed state.
Sep 26 14:15:00 LibreELEC crond[292]: Job for storage-Media.mount failed.
Sep 26 14:15:00 LibreELEC crond[292]: See "systemctl status storage-Media.mount" and "journalctl -xe" for details.
Sep 26 14:15:00 LibreELEC crond[292]: Cifs share not available on 26/09/2017 14:15:00
Sep 26 14:15:00 LibreELEC kernel: i2c i2c-1: [aml_i2c_xfer] error ret = -5 (-EIO)
Sep 26 14:15:00 LibreELEC kernel: i2c i2c-1: token 1, master_no(1) 300K addr 0x51
Sep 26 14:15:00 LibreELEC kernel: i2c i2c-1: [aml_i2c_xfer] error ret = -5 (-EIO)
Sep 26 14:15:00 LibreELEC kernel: i2c i2c-1: token 1, master_no(1) 300K addr 0x51

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After downgrading to v8.1.1 it's working again

**escalade** · September 26, 2017 at 2:08 PM

Try adding "vers=2.1" or whatever version your server supports to the Options= field.

TeHashX · September 26, 2017 at 5:22 PM

Thanks, I added vers=1.0 and it's working, with 2.1 or 3.0 not working and I am almost sure samba server is 3.6, there is some command from le terminal to find exactly which version is samba server?

**chewitt** · September 26, 2017 at 6:05 PM Official Post

It's not always possible, but always preferable to fix the server end to support SMB2+ connections instead of forcing the client end back to ye olde (insecure as hell) SMB1.

TeHashX · September 26, 2017 at 10:36 PM

I tried command from another server

Code

smbclient -L 192.168.5.1
Domain=[WORKGROUP] OS=[Unix] Server=[Samba 3.6.25]

So, it's v3.6.25 but I can connect only if I add vers=1.0 to Options field, must be something else wrong in LE v8.1.2

**mglae** · September 26, 2017 at 11:23 PM

Samba version has nothing to do with currently supported SMB protocol version of the server.

To check SMB protocol versions, install nmap v7.60 (not available for LE) and execute

Bash

nmap -p139,445 --script smb-protocols.nse <IP Address>

TeHashX · September 27, 2017 at 8:00 AM

Thanks, you are right, I get:

Code

root@ubuntu:/var/tmp# nmap -p139,445 --script smb-protocols.nse 192.168.5.1

Starting Nmap 7.60 ( https://nmap.org ) at 2017-09-27 09:43 EEST
Nmap scan report for RT-AC68U (192.168.5.1)
Host is up (0.0020s latency).

PORT    STATE SERVICE
139/tcp open  netbios-ssn
445/tcp open  microsoft-ds
MAC Address: 00:AA:AA:CC:CC:AA (Asustek Computer)

Host script results:
| smb-protocols:
|   dialects:
|_    NT LM 0.12 (SMBv1) [dangerous, but default]

Nmap done: 1 IP address (1 host up) scanned in 0.56 seconds

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This mean in v8.1.1 C2 connected with SMBv1 protocol but in V8.1.2 samba was updated and not accept connections until protocol version is added to Options field?

**milhouse** · September 27, 2017 at 9:14 AM

Quote from TeHashX

This mean in v8.1.1 C2 connected with SMBv1 protocol but in V8.1.2 samba was updated and not accept connections until protocol version is added to Options field?

Partly correct, as it's not really a Samba issue (at least, not in LibreELEC) it's a kernel issue. With 8.1.2 the kernel now establishes CIFS vers=2.1 (aka SMB2) connections by default, whereas with older releases (8.1.1 etc.) the kernel will establish CIFS vers=1.0 (aka SMB1) connections by default.

With more Samba servers dropping support for SMB1 (and security conscious users disabling it) the kernel developers recently made the decision to stop establishing CIFS vers=1.0 connections by default.

Most LE 8.1.2 users won't notice this change, it's only going to affect users with older Samba servers that don't support SMB2 (or are not configured to support it, which is probably the case with your server as Samba 3.6.25 is capable of supporting the SMB2 protocol).

Try adding the following to your Samba 3.6.25 server config, this will disable SMB1 but enable SMB2:

Code

min protocol = SMB2

max protocol = SMB2

Given the age of your server you should also consider an upgrade, as it's not secure.

TeHashX · September 29, 2017 at 10:35 AM

This was a very explicit answer

Samba server is running on my Asus RT-AC68U router and if I enable SMBv2 I think it will use to much resources.

Anyway, I will do some tests to check if SMBv2 is faster or just more secure.

Thanks!

**chewitt** · September 29, 2017 at 6:04 PM Official Post

"SMB2 will use too much resources" wins this months "most bogus comment" award .. aside from the fact that SMB2 is both more secure and gives better throughput performance, the comment is, just, wrong.

soder · September 29, 2017 at 8:45 PM

Also I'm having this problem after updated to LibreELEC 8.1.2., but adding the vers=1.0 solved some of my problems.

My "fileserver" is my old htpc, still running OpenELEC 6.0.3. What I do is that I mount the disks that is samba shared on that htpc, to my new htpc running LibreELEC 8.1.2. I also got a cheap Buffalo NAS with 2 disks in it.

On the fileserver I got 4 disks, all shares the same way in OpenELEC..

Now on LibreELEC 8.1.2 and Kodi 17.4, when I try to watch episodes from the shared that's hdd nr 4 on my OpenELEC installation, it's really buffering. But when I try from other disks or the NAS I don't get that problem.

What's can that be? Someone that can help me?

/Söder

**milhouse** · September 29, 2017 at 8:59 PM

Quote from soder

What's can that be? Someone that can help me?

/Söder

Please start a separate thread for your buffering issue rather than hijacking this one which is specifically about CIFS mounting issues (which you've already solved). Don't forget to include your debug log. Have you considered upgrading the outdated and insecure OpenELEC you use for your fileserver?

soder · September 29, 2017 at 9:13 PM

Quote from milhouse

Please start a separate thread for your buffering issue rather than hijacking this one which is specifically about CIFS mounting issues (which you've already solved). Don't forget to include your debug log. Have you considered upgrading the outdated and insecure OpenELEC you use for your fileserver?

I was wondering if there could be something with the CIFS mounting that could have anything to do with my different disks, like some kind of max size or file system or something else like that. That's why I wrote in this thread.

Oh yeah, I've considered upgrading, but haven't found the time to do it. Also, I don't really know what to use? Can I just do some kind of Ubuntu server version? And still keep the disks as they are...?

/Söder

**milhouse** · September 29, 2017 at 9:25 PM

Quote from soder

I was wondering if there could be something with the CIFS mounting that could have anything to do with my different disks, like some kind of max size or file system or something else like that. That's why I wrote in this thread.

As far as CIFS is concerned nothing has changed other than the default version is now 2.1 instead of 1.0.

soder · October 1, 2017 at 10:22 AM

Quote from milhouse

As far as CIFS is concerned nothing has changed other than the default version is now 2.1 instead of 1.0.

Yeah, I guess you're right. I think there's something strange going on with one of my disks. Are there some kind of command I can run (in OpenELEC) from the terminal to check the status, or if there's something wrong in the file system or stuff like that.

Sorry for the hijacking.

I found this.

Code

smartctl -a /dev/sda | less

EHdh

/Söder

**milhouse** · October 1, 2017 at 10:36 AM

soder start a new thread, please.

TeHashX · October 6, 2017 at 12:19 PM

Quote from chewitt

"SMB2 will use too much resources" wins this months "most bogus comment" award .. aside from the fact that SMB2 is both more secure and gives better throughput performance, the comment is, just, wrong.

Thanks for the award

Samba server is running on a Asus RT-AC68U router and SMBv2 is disabled by default because of CPU and the IO subsystem Asuswrt-Merlin 376.48 Beta 2 is out | SmallNetBuilder Forums

Anyway, I enabled a nfs share and I get better performance than samba.

Can't enable cifs shares in v8.1.2

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