we are dealing with many directories generated by our application exhausting directory limit of Ext3 filesystem. Ext4 is promising higher limit of subdirectories per directory. We made bit of research on web regarding stability of Ext4 filesystem on SLES 11.2 and there are some problems regarding Ext4. So we are courious as Ext4 is offically supported filesystem by Suse - is it safe enough for production enviroment and are there any tips regarding use of Ext4.

Thanks a lot!