Can’t change permissions – “The parameter is incorrect”

Grievous wrote:
Ok, we've got it reproduced in the office(finally). Now that we can observe the issue, we can work on a fix. However, I don't have any sort of estimate of at this point how long it's going to take on our end. If I need more information, or have more information, I'll let you guys know in this thread.

I've been watching this thread for a few days hoping for some relief. We've got a ReadNas 2100 in a Windows 2003 domain. We experienced the permissions issue which seemed to be coincident with this log entry:
Wed Nov 17 07:47:24 EST 2010 Your ReadyNAS device has been updated with a new firmware image. (RAIDiator-x86 4.2.15)

We have been limping along since that time. The only work around I have found is to:

1) Explore the share from a windows box (I'm doing it as a member "Domain Admin" and "Administrators")
2) goto properties->Security-Advanced
3) remove the Domain Users group (which on my box has permission set to 'none'
4) Click Apply and the Domain User group re-appears (without adding it) and "Full Control" shows under permissions

You seem to be able to set other attributes at this point.
I have done it for multiple files/folders if the permissions are all the same.

There is a very complex mapping going between Linux and Windows permissions that's causing this to be a difficult problem to define (from our user persepctive). The above workaround seems to allow the users to go about their business but it may be specific to our Active Directory defaults and other factors.

If I go to properties->Security and try to reset the permission on Domain Users I get the error: "The parameter is incorrect" after hitting the Apply button.

Hope this helps somebody....

I wonder if a roll-back for RAIDiator-x86 4.2.15 is an option while we wait?