Should be fixed by patch http://patches.gluster.com/patch/4328/ which is just committed to the master branch.
Found this crash and doing start and stop volume in a loop [2010-08-26 17:54:52.77196] I [client.c:1652:build_client_config] replace-brick: option 'remote-subvolume' not given [2010-08-26 17:54:52.77362] W [graph.c:120:_log_if_option_is_invalid] replace-brick: option 'transport.remote-port' is not recognized [2010-08-26 17:54:52.77389] I [afr-common.c:2587:afr_notify] pump: Subvolume 'locks' came back up; going online. [2010-08-26 17:54:52.86593] I [glusterfsd.c:612:cleanup_and_exit] glusterfsd: shutting down [2010-08-26 17:54:52.158792] W [rpc-transport.c:841:rpc_transport_load] rpc-transport: missing 'option transport-type'. defaulting to "socket" pending frames: patchset: git://git.sv.gnu.org/gluster.git signal received: 11 time of crash: 2010-08-26 17:54:52 configuration details: argp 1 backtrace 1 dlfcn 1 fdatasync 1 libpthread 1 llistxattr 1 setfsid 1 spinlock 1 epoll.h 1 xattr.h 1 st_atim.tv_nsec 1 package-string: glusterfs 3.1.0git /lib/libc.so.6[0x7fe2599f9530] /usr/local/lib/libgfrpc.so.0(rpc_clnt_submit+0x44d)[0x7fe25a381062] /usr/local/sbin/glusterfs(mgmt_submit_request+0x172)[0x4060d3] /usr/local/sbin/glusterfs(glusterfs_mgmt_pmap_signout+0x10c)[0x406b4e] /usr/local/sbin/glusterfs[0x404156] /usr/local/sbin/glusterfs(glusterfs_sigwaiter+0x154)[0x40560d] /lib/libpthread.so.0[0x7fe259d3ca04]