Hi, All: >From some online articles, in ext3, there are journal, ordered, and writeback three types of journaling file systems. Also in ext3, we can attach the journaling file system to the journal block device located on a different partition. I have not yet found related information for GFS. My questions are: 1. Does GFS also support the three types of journaling file systems? If not, what journaling file system is used in GFS? 2. What command I can use to find out which type of journaling file system is used in the existing GFS file sytem? 3. When updating journal files, does DLM process locks on the journal files as well? 4. Can I attach the journaling file system to the journal block device located on a different LUN for GFS (just like ext3)? Thanks in advance, Jas -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster