On Tue, Jul 15, 2014 at 10:15 AM, Jaemyoun Lee <jaemyoun at gmail.com> wrote: > The output is nothing because ceph-fuse fell into an infinite while loop as > I explain below. > > Where can I find the log file of ceph-fuse? It defaults to /var/log/ceph, but it may be empty. I realize the task may have hung, but I'm pretty sure it isn't looping, just waiting on some kind of IO. You could try running it with the "--debug-ms 1 --debug-client 10" command-line options appended and see what it spits out. -Greg Software Engineer #42 @ http://inktank.com | http://ceph.com