This will most likely be a feature addition at some later point. In particular, some of this work depends on the Linux community agreeing to standards in this area so not much progress can be made till then. Work is underway to implement this across the GFS cluster. GFS will continue to write to its journal and it will perform writes to the filesystem during a journal replay. This is a know bug and will be fixed in a future release.
Software always needs improvements.
To date, we have concentrated on reliability to the exclusion of other aspects. Future work on GFS will be split between bringing in new features and performance enhancements. There have been observed problems on fabric topologies which have been reported to Compaq. Compaq is currently working to fix these problems. There has been an observed problem under load that leads to kernel panics.