Firmware bug identified: overall_share cleared

My Cloud OS 3 Personal & Network Attached Storage My Cloud
1

The file /etc/samba/overall_share stores the samba shares. When following these steps, the file will be cleaned and the shares are unavailable to any clients:

1.) create 6 or more users and shares

2.) configure the shares non private

3.) in “shares” select one of the new shares

4.) within a very short period of time click through all the users and give them read-only (or write) permissions.

5.) file /etc/samba/overall_share is empty.

Cannot be fixed by reboot, system restore required. Can be reproduced on different MyClouds, I used 4TB ones with FW version v04.01.02-417.

The behaviour can be traced when logging in via ssh and monitoring the file with this command:

watch -n 1 cat /etc/samba/overall_share

Tried to submit this bug via email, but this crappy support-page failed to search the knowledge base. Hope this will be fixed in the next firmware release. 

2

it may be reproducable with thouse steps but it is not the only way it gets cleared or corupted. I added 1 more share, set permission and it got cleared. i manually re-created the file, others have done the system only restore

until they fix this it is a good idea to keep a backup

3

Thanks for heads-up. Just made a back-up of that file.
Have made sure the issue you’ve reported will get noticed and hopefully communicated to the right people.

4

Thanks. I have five of these devices and that was the first time this happened. I actually returned a new bought MyCloud because it appeared to me that it lost its shares without any reason. When the replacement device had the same issue, I did some investigation. For now, I’ll keep a backup of the file.

5

Ah, one more thing: When watching the overall_share file I first realized that there might be a problem with simultaneous write operations when a section looked like this:

BEGIN ## sharename = readonly

[readonly]
path = /shares/readonly
comment =
public = yes
browseable = yes
writeable = yes
guest ok = yes
map read only = no

END

#D

Note the additional #D in the end.

6

Well, I’ve sent the issue a bit higher up the chain. Looks like it’s serious enough problem.

7

Hi Guys, we have passed this along to support. 

8

Thanks very much. I bet it is rather serious, I’ve already sent one device back to Amazon claiming it was defective. That, however, was before I investigated this issue. Maybe others return their MyClouds too…

Well, let’s hope there will be a firmware update available soon.

9

The issue you have found for sure is in the system and is being looked at.