> we have no problem on using the volume for reading data and if > the server is not under heavy load it works well for writing too, > only hangs when server is using 100% cpu for math intensise > calculations and we try to write a lot of data to glusterfs > volume (it usually > takes some hours for it to hang) Interesting, as I suspect our hangs have occurred during very low CPU utilization. Can't tell for sure, as we can't get a shell during the hang. >> Talk of XFS being stable is encouraging me to give it a shot. > > It will be very difficult for us to migrate everything to xfs > now, but i will like to see someone having problems without xfs > not having that problems with xfs rather than people not having > problems saying that xfs is stable to start such large migration > process Agreed, that is exactly why I would like to try a different FS. If I still get hangs under XFS, then at least I'll know the hangs are almost certainly not due to EXT3 bugs. If it does work, then I have sneaked around the problem, rather than solved it (cheat!) Fortunately, I don't have too much data right now, and I can devote a partition to XFS for testing. My systems are in 24x6 production though, so I will need to wait for a quite (Sunday) period for the real testing. Thanks, Jeff.