I appreciate the info. I have tried adjust the ping-timeout setting, and it has seems to have no effect. The whole system hangs for 45+ seconds, which is about what it takes the second node to reboot, no matter what the value of ping-timeout is. The output of the mnt-log is below. It shows the adjust value I am currently testing (30s), but the system still hangs for longer than that.
Also, I have realized that the problem is deeper than I originally thought. It’s not just the mount that is hanging when a node reboots… it appears to be the entire system. I cannot use my SSH connection, no matter where I am in the system, and services such as httpd become unresponsive. I can ping the “surviving” system, but other than that it appears pretty unusable. This is a major drawback to using gluster. I can’t afford to lost two entire systems if one dies. [2015-04-16 22:59:21.281365] C [rpc-clnt-ping.c:109:rpc_clnt_ping_timer_expired] 0-common-client-0: server 172.31.64.200:49152 has not responded in the last 30 seconds, disconnecting. [2015-04-16 22:59:21.281560] E [rpc-clnt.c:362:saved_frames_unwind] (--> /usr/lib64/libglusterfs.so.0(_gf_log_callingfn+0x1e0)[0x7fce96450550] (--> /usr/lib64/libgfrpc.so.0(saved_frames_unwind+0x1e7)[0x7fce96225787] (--> /usr/lib64/libgfrpc.so.0(saved_frames_destroy+0xe)[0x7fce9622589e] (--> /usr/lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x91)[0x7fce96225951] (--> /usr/lib64/libgfrpc.so.0(rpc_clnt_notify+0x15f)[0x7fce96225f1f] ))))) 0-common-client-0: forced unwinding frame type(GlusterFS 3.3) op(LOOKUP(27)) called at 2015-04-16 22:58:45.830962 (xid=0x6d) [2015-04-16 22:59:21.281588] W [client-rpc-fops.c:2766:client3_3_lookup_cbk] 0-common-client-0: remote operation failed: Transport endpoint is not connected. Path: / (00000000-0000-0000-0000-000000000001) [2015-04-16 22:59:21.281788] E [rpc-clnt.c:362:saved_frames_unwind] (--> /usr/lib64/libglusterfs.so.0(_gf_log_callingfn+0x1e0)[0x7fce96450550] (--> /usr/lib64/libgfrpc.so.0(saved_frames_unwind+0x1e7)[0x7fce96225787] (--> /usr/lib64/libgfrpc.so.0(saved_frames_destroy+0xe)[0x7fce9622589e] (--> /usr/lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x91)[0x7fce96225951] (--> /usr/lib64/libgfrpc.so.0(rpc_clnt_notify+0x15f)[0x7fce96225f1f] ))))) 0-common-client-0: forced unwinding frame type(GF-DUMP) op(NULL(2)) called at 2015-04-16 22:58:51.277528 (xid=0x6e) [2015-04-16 22:59:21.281806] W [rpc-clnt-ping.c:154:rpc_clnt_ping_cbk] 0-common-client-0: socket disconnected [2015-04-16 22:59:21.281816] I [client.c:2215:client_rpc_notify] 0-common-client-0: disconnected from common-client-0. Client process will keep trying to connect to glusterd until brick's port is available [2015-04-16 22:59:21.283637] I [socket.c:3292:socket_submit_request] 0-common-client-0: not connected (priv->connected = 0) [2015-04-16 22:59:21.283663] W [rpc-clnt.c:1562:rpc_clnt_submit] 0-common-client-0: failed to submit rpc-request (XID: 0x6f Program: GlusterFS 3.3, ProgVers: 330, Proc: 27) to rpc-transport (common-client-0) [2015-04-16 22:59:21.283674] W [client-rpc-fops.c:2766:client3_3_lookup_cbk] 0-common-client-0: remote operation failed: Transport endpoint is not connected. Path: /src (63fc077b-869d-4928-8819-a79cc5c5ffa6) [2015-04-16 22:59:21.284219] W [client-rpc-fops.c:2766:client3_3_lookup_cbk] 0-common-client-0: remote operation failed: Transport endpoint is not connected. Path: (null) (00000000-0000-0000-0000-000000000000) [2015-04-16 22:59:52.322952] E [client-handshake.c:1496:client_query_portmap_cbk] 0-common-client-0: failed to get the port number for [root@cfm-c glusterfs]# —CJ > On Apr 7, 2015, at 10:26 PM, Ravishankar N <[email protected]> wrote: > > > > On 04/07/2015 10:11 PM, CJ Baar wrote: >> Then, I issue “init 0” on node2, and the mount on node1 becomes >> unresponsive. This is the log from node1 >> [2015-04-07 16:36:04.250693] W >> [glusterd-op-sm.c:4021:glusterd_op_modify_op_ctx] 0-management: op_ctx >> modification failed >> [2015-04-07 16:36:04.251102] I >> [glusterd-handler.c:3803:__glusterd_handle_status_volume] 0-management: >> Received status volume req for volume test1 >> The message "I [MSGID: 106004] >> [glusterd-handler.c:4365:__glusterd_peer_rpc_notify] 0-management: Peer >> 1069f037-13eb-458e-a9c4-0e7e79e595d0, in Peer in Cluster state, has >> disconnected from glusterd." repeated 39 times between [2015-04-07 >> 16:34:40.609878] and [2015-04-07 16:36:37.752489] >> [2015-04-07 16:36:40.755989] I [MSGID: 106004] >> [glusterd-handler.c:4365:__glusterd_peer_rpc_notify] 0-management: Peer >> 1069f037-13eb-458e-a9c4-0e7e79e595d0, in Peer in Cluster state, has >> disconnected from glusterd. > This is the glusterd log. Could you also share the mount log of the healthy > node in the non-responsive -->responsive time interval? > If this is indeed the ping timer issue, you should see something like: > "server xxx has not responded in the last 42 seconds, disconnecting." > Have you, for testing sake, tried reducing the network.ping-timeout value to > something lower and checked that the hang happens only for that time? >> >> This does not seem like desired behaviour. I was trying to create this >> cluster because I was under the impression it would be more resilient than a >> single-point-of-failure NFS server. However, if the mount halts when one >> node in the cluster dies, then I’m no better off. >> >> I also can’t seem to figure out how to bring a volume online if only one >> node in the cluster is running; again, not really functioning as HA. The >> gluster service runs and the volume “starts”, but it is not “online” or >> mountable until both nodes are running. In a situation where a node fails >> and we need storage online before we can troubleshoot the cause of the node >> failure, how do I get a volume to go online? > This is expected behavior. In a two node cluster, if only one is powered on, > glusterd will not start other gluster processes (brick, nfs, shd ) until the > glusterd of the other node is also up (i.e. quorum is met). If you want to > override this behavior, do a `gluster vol start <volname> force` on the node > that is up. > > -Ravi >> >> Thanks. >
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