@MRC-MBU Hello again.
Sorry to hear you continued difficulties with v3.9.2-57. But there have been years of work on our side in completely rewriting such things as our AD intergration and years more upstream on the samba etc front and it’s now rather difficult for us to help with the older releases. How are your test trials with v4 coming along. v3.9.2-57 is not longer buildable for us, partly because of the warning message you received regarding setuptools. In the end it became too old to even build against. So we had to stop releasing any more CentOS based rpms. But we were a very long way along with the “Built on openSUSE” endeavour by that point and it ended up being our v4.1.0-0 release.
As I understand it you are already testing this latest free stable release in your environment. It has also, in turn, completely revamped the AD stuff and has a far newer samba.
Last Stable channel released (3.9.2-57) - April 2020
v4.1.0-0 = January 2022
As a work around for now, you may find that this has all happened as the underlying filesystem has become slower and some OS components have been updated outside of Rockstor’s compatibility. I’m really not sure. But I suspect this is down to a timing issue as the fs has slowed down and the bootup now fails due to the mount time in relation to samba starting (wild guess here). So you could try, after a reboot, and given time for what can settle to settle. Disabling samba via the Web-UI, given it a few minutes. Then re-enable. This given the samba start a chance to mount all that it has to with the knowledge that those subvolumes are already mounted. Again this is a guess and may give you some more breathing time before moving to a supported Rockstor version.
Hope that helps.