SMB issue only affecting Linux after upgrading from 11.1 to 11.3

[mrripley]

I recently added some new storage to my NAS. During that I upgraded FreeNAS from 11.1-U5 to 11.3-U1. After the upgrade Linux servers that had SMB mounts to shares on my FreeNAS box were unable to write to them. I had the shares setup with Allow Guest Access and they had been working fine before the upgrade. From multiple Windows boxes I was still able to write to the shares. I tried recreating the shares, several attempts at modifying the fstab config but none of it helped. The only way I could get the Linux boxes to write to the shares was to enable Only Allow Guest Access.

Am I missing something here? Why would Windows be able to read/write to a share with Allow Guest Access but Linux can only read/write if I also enable Only Allow Guest Access?

Here's an example of an fstab entry that was working as expected prior to the upgrade:

Code:

//172.16.11.25/media /media/storage cifs vers=3.0,guest,uid=1000,iocharset=utf8 0 0

Before I file a bug report I wanted to make sure this wasn't the expected behavior.

 

[anodos]

I recently added some new storage to my NAS. During that I upgraded FreeNAS from 11.1-U5 to 11.3-U1. After the upgrade Linux servers that had SMB mounts to shares on my FreeNAS box were unable to write to them. I had the shares setup with Allow Guest Access and they had been working fine before the upgrade. From multiple Windows boxes I was still able to write to the shares. I tried recreating the shares, several attempts at modifying the fstab config but none of it helped. The only way I could get the Linux boxes to write to the shares was to enable Only Allow Guest Access.

Am I missing something here? Why would Windows be able to read/write to a share with Allow Guest Access but Linux can only read/write if I also enable Only Allow Guest Access?

Here's an example of an fstab entry that was working as expected prior to the upgrade:

Code:

//172.16.11.25/media /media/storage cifs vers=3.0,guest,uid=1000,iocharset=utf8 0 0

Set log level to "normal" and then watch /var/log/samba4/log.smbd while trying to authenticate without "only allow guest access".

 

[mrripley]

Trying touch fails with permission denied but no error in the log. Doing an mkdir give this in the log:

Code:

[2020/04/20 16:26:55.374747,  2] ../../source3/smbd/open.c:4056(open_directory)
  open_directory: unable to create test. Error was NT_STATUS_ACCESS_DENIED

 

[mrripley]

Bump. Anyone got any ideas?

 

[mrripley]

Bug filed - https://jira.ixsystems.com/browse/NAS-105929?filter=-2