Trond Myklebust wrote: Any idea which file that thread is deleting, and why that might be hanging? The test is a copy of the part of the mount command that writes /etc/mtab. So it's doing some sequence of link, write, flock. It does this thousands of times, much of it in parallel. I'll get a trace of a single instance of this so we can see what the actual syscalls are. I'll also see about turning on the mutex debug. Give me a couple of hours. If you want to look at the source code for the test, clone this: git://oss.sgi.com/xfs/cmds/xfstests and it's in src/t_mtab.c. It's driven by the "089" script. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html