Anyone have 15 minutes on a development installation of ocfs 1.0.9-12 to do me a favor? Follow these 8 steps and see if you have the same problem I'm having? It doesn't look to me like a hardware issue but if someone else does NOT have the same problem then I can rule ocfs out. 1. install ocfs-2.4.9-e-enterprise-1.0.9-12 and 1.0.9-12 tools 2. create a new filesystem node1# mkfs.ocfs -b 128 -F -g 0 -L dc1:/u02 -m /u02 -p 755 -u 0 /dev/sdc 3. mount the fs node1# mount /dev/sdc /u02 -t ocfs 4. make a subdir, change into it node1# mkdir /u02/test node1# cd /u02/test 5. fill the directory with 406 70M files node1# /usr/bin/time -v /bin/sh -c ' for ((X=1; X \<= 406; X=((X + 1)) )); do echo test$X.dbf; dd if=/dev/zero of=./test$X.dbf bs=131072 count=560 done ' 6. mount the volume on THE OTHER NODE node2# mount /dev/sdc /u02 -t ocfs 7. create a file in the test dir (from either node) node2# /bin/echo test > /u02/test/file1 8. create a file in the test dir from the opposite node as step 7 node1# /bin/echo test > /u02/test/file2 step 8 causes my system to hang. if you try to "kill" the process (from another login), it will get stuck in a "D" disk wait state. if you go back to the first node and delete the first file you created then all hanging processes on the second node should resume. is anyone able to reproduce this error? following these steps seems to consistently generate the error on my system. many thanks, Jeremy