We have two rather large server's running GFS in a production environment and have been getting errors since the start. First our configuration. 2 - Quad 880 Opteron Servers with 64GB RAM 1 - Infortrend 2GB SAN OS - SuSe 10.0 Professional (Kernel 2.6.13-15.8-smp x86_64) Cluster network is on GigE connection. This link is shared and used for other purposes but not much traffic. Here is the error message: Aug 7 14:40:45 CServer01 kernel: GFS: fsid=Cluster01:gfs1.1: warning: assertion "gfs_glock_is_locked_by_me(ip->i_gl)" failed Aug 7 14:40:45 CServer01 kernel: GFS: fsid=Cluster01:gfs1.1: function = gfs_readpage Aug 7 14:40:45 CServer01 kernel: GFS: fsid=Cluster01:gfs1.1: file = /usr/src/gfs/src/cluster-1.02.00/gfs-kernel/src/gfs/ops_address.c, line = 283 Aug 7 14:40:45 CServer01 kernel: GFS: fsid=Cluster01:gfs1.1: time = 1154986845 This appears to occur when both machines try to access the same files/directory. They happen at a rate of about 10-15 an hour. Anyone know if this is critical or a way to turn these off if they are not an issue? There is definitely a big performance issue when using GFS on very CPU intense applications. When the first server is using all 8 CPU core's doing processing the second server's IO response slows to a crawl. Any sysctl tweaks to help improve the performance appreciated. Thanks, Brad Dameron SeaTab Software www.seatab.com -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
