To make the following clearer: I’m on linux for desktops / servers, Ubuntu and Debian with Kernels 2.6.26, 2.6.32 and 2.6.36 (IIRC)
I moved my personal /home directory from a VM machine to my new drobo and have had nothing but problems since.
I know, unfs3 doesn’t support locking so I had to get around that with separate locking methods, and the nolock parameter on my /etc/fstab.
The problem is, when I get to an unknown number of files, any ‘mv’ that happens causes duplicate file names. It doesn’t matter which client I connect with so I don’t believe it’s a client kernel issue, I do not see the duplicate file names when I ssh into the drobo so I don’t think it’s a drobo file system issue, and finally in my tests with unfs3 server NOT on the drobo, I can’t get the same issue to trigger.
This causes a major pain for my mail services since once it see’s duplicate file names, it tries to resync its internal database… of course, since this is a file layer issue, it always see’s this duplicate file name and causes the imap process to hang while constantly trying to update it’s database.
You can see additional details on the bug report I started to work on via debian here: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=599823
Any suggestions welcome - or hints that Kernel NFS is coming