On Thu, 2004-12-09 at 17:31, Rick Stevens wrote: > I have a two-node setup on a dual-port SCSI SAN. Note this is just > for test purposes. Part of the SAN is a GFS filesystem shared between > the two nodes. > > When we fetch content to the GFS filesystem via an rsync pull (well, > several rsync pulls) on node 1, it runs for a while then node 1 hard > locks (nothing on the console, network dies, console dies, it's frozen > solid). Try putting "nmi_watchdog=1" on the kernel command line. This will hopefully cause the hung machine to crash, producing a stack trace on the console. This may provide clues as to the cause. If you are running PowerPath, or anything like that, try a test without it. Tom