[Samba] Share inaccessible intermittently and often - restarting smb cures for short time

Fri Apr 24 17:37:34 UTC 2020

Don’t think we’re the only one with this problem,
We use it how I said for 3 Companies and we have this issue at all our customers after upgrade to 4.12, before we never had this problem.
Downgrade will solve this problem but stay always on an old version brings in future new problems.
We have a sernet subscription but no support package, that’s the reason why I write here.

The question is here how we can solve this issue, that windows clients can connect to the shares without issues and how we can debug this?

Reproducer the problem is easy, create new PDC and some shares, add 2 or 3 virtual clients and then try to connect with all clients a share.

Best Regards

Von: samba <samba-bounces at lists.samba.org>
Datum: Freitag, 24. April 2020 um 15:56
An: samba at lists.samba.org <samba at lists.samba.org>
Betreff: Re: [Samba] Share inaccessible intermittently and often - restarting smb cures for short time
Interesting that you're using the sernet packages.. Mine was built from
source.  I guess we're the only two people on the planet having this issue
:).  I am going to attempt to downgrade just my file server to a few
versions back and see if it starts working.

On April 24, 2020 3:55:41 AM David Faller via samba <samba at lists.samba.org>
wrote:

> Same here, I had also wrote to the mailing list,
> 2 Customers has the same issue after upgrading to 4.12
> Windows Clients get the error “another prosscess is in use” or “wrong
> handle” when a user try to open a network share.
> After restart samba it’s working for a little moment but mostly not.
>
> We’re using Debian 10 Buster and Samba Version is:
> Version 4.12.1-SerNet-Debian-5.buster
>
> Von: samba <samba-bounces at lists.samba.org>
> Datum: Donnerstag, 23. April 2020 um 20:26
> An: samba <samba at lists.samba.org>
> Betreff: Re: [Samba] Share inaccessible intermittently and often -
> restarting smb cures for short time
> Additional Information:
>
> This is happening on both a Windows 7 client and a Windows 10 client both
> of which are joined to the domain.  Seems to be some sort of file locking
> issue but it is happening at the share level - before I even attempt to
> access or write a file.
>
> On a different server running Samba 4.9.2 and a relatively similar setup
> (same build commands but running on CentOS 7) I do not have this issue.
>
>> Ok increased logging and got the error here is what got logged:
>>
>> 2020/04/23 14:03:17.514132,  3]
>> ../../source3/smbd/smb2_server.c:3274(smbd_smb2_request_error_ex)
>>  smbd_smb2_request_error_ex: smbd_smb2_request_error_ex: idx[1]
>>  status[NT_STATUS_SHARING_VIOLATION] || at ../../source3/smbd/smb2_create.c:334
>> [2020/04/23 14:03:17.514206,  3]
>> ../../source3/smbd/smb2_server.c:3274(smbd_smb2_request_error_ex)
>>  smbd_smb2_request_error_ex: smbd_smb2_request_error_ex: idx[5]
>>  status[NT_STATUS_FILE_CLOSED] || at ../../source3/smbd/smb2_server.c:2635
>> [2020/04/23 14:03:17.523861,  3]
>> ../../source3/smbd/smb2_server.c:3274(smbd_smb2_request_error_ex)
>>  smbd_smb2_request_error_ex: smbd_smb2_request_error_ex: idx[1]
>>  status[NT_STATUS_SHARING_VIOLATION] || at ../../source3/smbd/smb2_create.c:334
>> [2020/04/23 14:03:17.525350,  3]
>> ../../source3/smbd/smb2_server.c:3274(smbd_smb2_request_error_ex)
>>  smbd_smb2_request_error_ex: smbd_smb2_request_error_ex: idx[1]
>>  status[NT_STATUS_SHARING_VIOLATION] || at ../../source3/smbd/smb2_create.c:334
>>
>> Rich
>>
>>> Sorry it defaulted to sending direct to you - here it is to the list.
>>>
>>>> OS is CentOS 8
>>>>
>>>> I was thinking about the possibility of using the version in the base repo for
>>>> the file server since I don't need ADDC for the file server.  I just need the
>>>> ability to join.
>>>>
>>>> Here is my configure command that I used to configure the source:
>>>>
>>>> ./configure \
>>>> --disable-cups \
>>>> --without-ldb-lmdb \
>>>> --prefix=/opt/samba \
>>>> --sysconfdir=/etc/samba \
>>>> --localstatedir=/var \
>>>> --with-lockdir=/var/lib/samba/lock \
>>>> --with-piddir=/run/samba \
>>>> --with-systemd \
>>>> --systemd-install-services \
>>>> --with-logfilebase=/var/log/samba
>>>>
>>>> Nothing really outstanding...
>>>>
>>>> Thanks,
>>>> Rich
>>>>
>>>> ----- On Apr 23, 2020, at 1:33 PM, samba samba at lists.samba.org wrote:
>>>>
>>>>> On 23/04/2020 17:58, Rich Webb via samba wrote:
>>>>>> Hello,
>>>>>>
>>>>>> I'm running Samba 4.12.1 both as a domain controller on one box (DC1) and as a
>>>>>> joined member on another box for a file server (FS1).
>>>>>>
>>>>>> I have three shares on FS1 and intermittently I am getting a message that says
>>>>>> "\\fs1\shared is not accessible. You might not have permissions to use this
>>>>>> network resource. Contact the administrator of this server to find out if you
>>>>>> have access permissions. The process cannot access the file because it is being
>>>>>> used by another process."
>>>>>>
>>>>>> Now when this is happening on one share it might not be on one of the other
>>>>>> two.
>>>>>> Sometimes it happens on all of them. This morning I copied a file over to
>>>>>> shared and the copy completed but the window didn't update and the file did not
>>>>>> show up so I went to refresh the screen and got the error. If I wait long
>>>>>> enough or go back and forth between different shares it will again become
>>>>>> accessible but when I go to FS1 and restart the smb service I can again access
>>>>>> it. It is happening very frequently. Almost every time I want to use the server
>>>>>> for something.
>>>>>>
>>>>>> Both of these installs were built from source. If you need the configure
>>>>>> commands I used I can provide that as well.
>>>>> Yes please ;-)
>>>>>
>>>>> There is nothing really wrong with your smb.conf files, except I would
>>>>> remove the 'winbind enum' lines from FS1, all they really do is to slow
>>>>> things down. I would also add 'winbind refresh tickets = Yes' to FS1.
>>>>>
>>>>> After this, you may have to raise the log level on FS1 to see if
>>>>> anything pops out.
>>>>>
>>>>> What OS is this ?
>>>>>
>>>>> Rowland
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
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