Retain needs to store a very large number of generally very small files usually one a few kilobytes in size. It is recommended to use XFS or EXT4 on a Linux system.
Retain says it is out of disk space but Linux shows it has space available. The iNodes are all used up. How can you set up a EXT3 partition to handle more iNodes?
One way to check for the inodes is to run a df command with the -i switch:
ExampleServer:~ # df -i
Filesystem Inodes IUsed IFree IUse% Mounted on /dev/sda2 2526384 247430 2278954 10% /
This issue is most likely caused because of a change made with SLES 11. This link SLES11 ext3 partitions can only store 50% of the files that can be stored on SLES10 will explain what happened and how to change this behavior.