Users can not reach shared folders anymore - TC-EC879U-RP

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mscag
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Users can not reach shared folders anymore - TC-EC879U-RP

Postby mscag » Thu Nov 08, 2018 7:30 pm

Hi,

There are a few hundred local users on our TC-EC879U-RP with firmware 4.3.5.0728 (2018/10/13) reaching to the 80+ shared folders (20+TB) using their own permissions. This setup has been working successfully for a few year.

This morning, all the users lost drive mappings on their Windows 7/10 machines. Everyone is allowed to access their files and folders through web interface, but no one except the admin can access the related folders through drive mappings. They receive "Access Denied" error message.

The Samba version is below

[/etc/config] # smb2status
smbd (samba daemon) Version 4.4.16
smbd (samba daemon) is running.
max protocol SMB 3 enabled.

Any help is highly appreciated.

Regards.

dolbyman
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Re: Users can not reach shared folders anymore - TC-EC879U-RP

Postby dolbyman » Thu Nov 08, 2018 11:34 pm

domain joined?
If so, there is a couple of threads of people reporting domain auth loss on current firmwares

viewtopic.php?f=20&t=143910

mscag
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Re: Users can not reach shared folders anymore - TC-EC879U-RP

Postby mscag » Fri Nov 09, 2018 6:49 am

Hi,

We don't have an AD in our network.

Regards.

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Re: Users can not reach shared folders anymore - TC-EC879U-RP

Postby dolbyman » Fri Nov 09, 2018 7:23 am

so the few hundred users are all entered manually into the QNAP ?

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Don
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Re: Users can not reach shared folders anymore - TC-EC879U-RP

Postby Don » Fri Nov 09, 2018 8:19 am

Did you check permissions? Where they any changes made?
Read the Online Manuals and use the forum search feature before posting.

It is a recommended to use RAID and have external backups. RAID will protect you from disk failure, keep your system running, and data accessible while the disk is replaced and the RAID rebuilt. Backups will allow you to recover data that is lost or corrupted, or from system failure. One does not replace the other.

Submit bugs and feature requests to QNAP via their Helpdesk app.

NAS: TVS-882BR | F/W: 4.3.5.0728 | 40GB | 2 x M.2 SATA RAID 1 (System) | 4 x M.2 NMVe QM2-4P-384A RAID 5 (Cache) | 5 x 4TB HDD RAID 6 (Data) | 1 x Blu-ray
NAS: TVS-663 | F/W: 4.3.5.0728 | 16GB | 2 x M.2 NMVe QM2-2P RAID 1 (Cache) | 4 x 4TB RAID 5
Apps: Boinc, Squid, DNSMasq, PLEX, iDrive, QVPN, QLMS, MP3fs, HBS, Entware, DLstation, +others

mscag
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Re: Users can not reach shared folders anymore - TC-EC879U-RP

Postby mscag » Fri Nov 09, 2018 2:01 pm

Yes,

The user accounts have been created and being managed manually. The permissions are all correct. We are sure about the permissions, because users are able to login using web interface and access the files/folders as usual. It seems to be only the Samba service which is causing problem.

We have tried restoring a week old "smb.conf", "smbpassw", and "smbusers" configuration files from the backup (/share/MD0_DATA/.@backup_config) folder, but nothing changed.

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storageman
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Re: Users can not reach shared folders anymore - TC-EC879U-RP

Postby storageman » Fri Nov 09, 2018 4:28 pm

To me this sounds like ports are blocked.
Webdav works over different port to SMB. It's doesn't sound like SMB is broken.
Can you make a direct connection to the box with a PC laptop (169.254.100.100 address) without antivirus and see what happens attaching with a local user?

In my view copying SMB configs about was premature and dangerous and may have complicated resolution.

mscag
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Re: Users can not reach shared folders anymore - TC-EC879U-RP

Postby mscag » Fri Nov 09, 2018 6:10 pm

Unfortunately, the result did not change.

We have checked, and all the related ports of the NAS are up and responding.

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storageman
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Re: Users can not reach shared folders anymore - TC-EC879U-RP

Postby storageman » Fri Nov 09, 2018 6:19 pm

This is weird,
Guru Schumaku has posted some useful tests here

viewtopic.php?t=123661

mscag
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Re: Users can not reach shared folders anymore - TC-EC879U-RP

Postby mscag » Fri Nov 09, 2018 8:00 pm

Most of the mentioned issues are the one we have already covered. I even reinstalled Samba this time, but nothing changed.

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storageman
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Re: Users can not reach shared folders anymore - TC-EC879U-RP

Postby storageman » Fri Nov 09, 2018 8:47 pm

So creating new mapping doesn't work?
Connecting on IP rather than hostname doesn't work?
And this?
https://www.qnap.com/en/how-to/faq/arti ... s-problem/
I guess it's time to raise a ticket
Very odd

mscag
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Re: Users can not reach shared folders anymore - TC-EC879U-RP

Postby mscag » Sun Nov 11, 2018 6:38 am

Unfortunately, nothing worked....

And my ticket created on 8 November 2018 is still waiting attention.


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