[Samba] Eclipse (Java) locking issues after upgrade (3.6.23 -> 4.4.3)

[Luc Lalonde]

Hello Jeremy,

Sorry for the long delay for responding to your request (just came back 
to the office after long Victoria day weekend).

I'm not sure if it's Ok to send such large attachements to the list.   
So here's a Dropbox public link to download it:

https://www.dropbox.com/s/o2617jtqfbwlyhc/eclipse-java-samba-level10.log.gz?dl=0

All our connections to this share are not all via Samba.   We use it for 
Linux diskless (via kernel, Pam_Mount) and Windows clients.

That's why we use 'kernel oplocks = yes'.  Maybe we don't need it? Could 
it be the source of our problem?

Please don't hesitate to get in touch if you need more info...

Thanks for the help, Luc.

Le 2016-05-20 18:05, Jeremy Allison a écrit :
> On Fri, May 20, 2016 at 12:01:20PM -0400, Luc Lalonde wrote:
>> Caused
>>   by: java.io.IOException: An error occurred while locking file
>> "/home/user/.eclipse/org.eclipse.platform_4.6.0_1664049636_macosx_cocoa_x86_64/configuration/org.eclipse.osgi/.manager/.fileTableLock":
>>   "Operation not supported". A common reason is that the file system or
>> Runtime Environment does not support file locking for that location.
>> Please choose a different location, or disable file locking by passing
>> "-Dosgi.locking=none" as a VM argument.
>>
>> 	at org.eclipse.osgi.internal.location.Locker_JavaNio.lock(Locker_JavaNio.java:49)
>>
>> 	at org.eclipse.osgi.storagemanager.StorageManager.lock(StorageManager.java:388)
>>
>> 	at org.eclipse.osgi.storagemanager.StorageManager.open(StorageManager.java:701)
>>
>> 	at org.eclipse.osgi.storage.Storage.getChildStorageManager(Storage.java:1785)
>>
>> 	at org.eclipse.osgi.storage.Storage.getInfoInputStream(Storage.java:1802)
>>
>> 	at org.eclipse.osgi.storage.Storage.<init>(Storage.java:128)
>>
>> 	at org.eclipse.osgi.storage.Storage.createStorage(Storage.java:87)
>>
>> 	at org.eclipse.osgi.internal.framework.EquinoxContainer.<init>(EquinoxContainer.java:66)
>>
>> 	... 10 more
>>
>> mac-mini:MacOS user$ mount
>>
>> /dev/disk0s2 on / (hfs, local, journaled)
>>
>> devfs on /dev (devfs, local, nobrowse)
>>
>> map -hosts on /net (autofs, nosuid, automounted, nobrowse)
>>
>> map auto_home on /home (autofs, automounted, nobrowse)
>>
>> map -fstab on /Network/Servers (autofs, automounted, nobrowse)
>>
>> //user at sambafileserver.foo.bar/user  <http://p302568@moe-180.gi.polymtl.ca/p302568>  on /home/user (smbfs, nodev, nosuid, automounted, nobrowse, mounted by user)
>>
>>
>> The client is a Mac-Mini running OSX Yosemite with Java 8, update92.
>> We have no problems with Windows 10 clients.
>>
>> Here are the pertinent configuration directives active on the Samba server:
>>
>>     kernel oplocks = yes
>>     strict locking = No
>>     oplocks = yes
>>     level2 oplocks = yes
>>     deadtime = 15
>>     unix extensions = yes
>>     wide links = yes
>>     allow insecure wide links = yes
>>
>> What's strange  is this was working fine with Samba v3.6.23.    We
>> don't have any problems with Windows clients.
> Turn off "kernel oplocks = yes", you don't need this
> if all access is via Samba.
>
> Do you have a debug level 10 log from the server
> showing access requests at the time of the failure ?

-- 
Luc Lalonde, analyste
-----------------------------
Département de génie informatique:
École polytechnique de MTL
(514) 340-4711 x5049
Luc.Lalonde at polymtl.ca
-----------------------------