Re: glusterfs client crashes

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On 2/21/2016 2:23 PM, Dj Merrill wrote:
> Very interesting.  They were reporting both bricks offline, but the
> processes on both servers were still running.  Restarting glusterfsd on
> one of the servers brought them both back online.

I realize I wasn't clear in my comments yesterday and would like to elaborate on this a bit further. The "very interesting" comment was sparked because when we were running 3.7.6, the bricks were not reporting as offline when a client was having an issue, so this is new behaviour now that we are running 3.7.8 (or a different issue entirely).

The other point that I was not clear on is that we may have one client reporting the "Transport endpoint is not connected" error, but the other 40+ clients all continue to work properly. This is the case with both 3.7.6 and 3.7.8.

Curious, how can the other clients continue to work fine if both Gluster 3.7.8 servers are reporting the bricks as offline?

What does "offline" mean in this context?


Re: the server logs, here is what I've found so far listed on both gluster servers (glusterfs1 and glusterfs2):

[2016-02-21 08:06:02.785788] I [glusterfsd-mgmt.c:1596:mgmt_getspec_cbk] 0-glusterfs: No change in volfile, continuing [2016-02-21 18:48:20.677010] W [socket.c:588:__socket_rwv] 0-gv0-client-1: readv on (sanitized IP of glusterfs2):49152 failed (No data available) [2016-02-21 18:48:20.677096] I [MSGID: 114018] [client.c:2030:client_rpc_notify] 0-gv0-client-1: disconnected from gv0-client-1. Client process will keep trying to connect to glusterd until brick's port is available [2016-02-21 18:48:31.148564] E [MSGID: 114058] [client-handshake.c:1524:client_query_portmap_cbk] 0-gv0-client-1: failed to get the port number for remote subvolume. Please run 'gluster volume status' on server to see if brick process is running. [2016-02-21 18:48:40.941715] W [socket.c:588:__socket_rwv] 0-glusterfs: readv on (sanitized IP of glusterfs2):24007 failed (No data available) [2016-02-21 18:48:51.184424] I [glusterfsd-mgmt.c:1596:mgmt_getspec_cbk] 0-glusterfs: No change in volfile, continuing [2016-02-21 18:48:51.972068] I [glusterfsd-mgmt.c:58:mgmt_cbk_spec] 0-mgmt: Volume file changed [2016-02-21 18:48:51.980210] I [glusterfsd-mgmt.c:58:mgmt_cbk_spec] 0-mgmt: Volume file changed [2016-02-21 18:48:51.985211] I [glusterfsd-mgmt.c:58:mgmt_cbk_spec] 0-mgmt: Volume file changed [2016-02-21 18:48:51.995002] I [glusterfsd-mgmt.c:58:mgmt_cbk_spec] 0-mgmt: Volume file changed [2016-02-21 18:48:53.006079] I [glusterfsd-mgmt.c:1596:mgmt_getspec_cbk] 0-glusterfs: No change in volfile, continuing [2016-02-21 18:48:53.018104] I [glusterfsd-mgmt.c:1596:mgmt_getspec_cbk] 0-glusterfs: No change in volfile, continuing [2016-02-21 18:48:53.024060] I [glusterfsd-mgmt.c:1596:mgmt_getspec_cbk] 0-glusterfs: No change in volfile, continuing [2016-02-21 18:48:53.035170] I [glusterfsd-mgmt.c:1596:mgmt_getspec_cbk] 0-glusterfs: No change in volfile, continuing [2016-02-21 18:48:53.045637] I [rpc-clnt.c:1847:rpc_clnt_reconfig] 0-gv0-client-1: changing port to 49152 (from 0) [2016-02-21 18:48:53.051991] I [MSGID: 114057] [client-handshake.c:1437:select_server_supported_programs] 0-gv0-client-1: Using Program GlusterFS 3.3, Num (1298437), Version (330) [2016-02-21 18:48:53.052439] I [MSGID: 114046] [client-handshake.c:1213:client_setvolume_cbk] 0-gv0-client-1: Connected to gv0-client-1, attached to remote volume '/export/brick1/sdb1'. [2016-02-21 18:48:53.052486] I [MSGID: 114047] [client-handshake.c:1224:client_setvolume_cbk] 0-gv0-client-1: Server and Client lk-version numbers are not same, reopening the fds [2016-02-21 18:48:53.052668] I [MSGID: 114035] [client-handshake.c:193:client_set_lk_version_cbk] 0-gv0-client-1: Server lk version = 1 [2016-02-21 18:48:31.148706] I [MSGID: 114018] [client.c:2030:client_rpc_notify] 0-gv0-client-1: disconnected from gv0-client-1. Client process will keep trying to connect to glusterd until brick's port is available [2016-02-21 18:49:12.271865] W [socket.c:588:__socket_rwv] 0-glusterfs: readv on (sanitized IP of glusterfs2):24007 failed (No data available) [2016-02-21 18:49:15.637745] W [socket.c:588:__socket_rwv] 0-gv0-client-1: readv on (sanitized IP of glusterfs2):49152 failed (No data available) [2016-02-21 18:49:15.637824] I [MSGID: 114018] [client.c:2030:client_rpc_notify] 0-gv0-client-1: disconnected from gv0-client-1. Client process will keep trying to connect to glusterd until brick's port is available [2016-02-21 18:49:24.198431] E [socket.c:2278:socket_connect_finish] 0-glusterfs: connection to (sanitized IP of glusterfs2):24007 failed (Connection refused) [2016-02-21 18:49:26.204811] E [socket.c:2278:socket_connect_finish] 0-gv0-client-1: connection to (sanitized IP of glusterfs2):24007 failed (Connection refused) [2016-02-21 18:49:38.366559] I [MSGID: 108031] [afr-common.c:1883:afr_local_discovery_cbk] 0-gv0-replicate-0: selecting local read_child gv0-client-0 [2016-02-21 18:50:54.605535] I [glusterfsd-mgmt.c:1596:mgmt_getspec_cbk] 0-glusterfs: No change in volfile, continuing [2016-02-21 18:50:54.605639] E [MSGID: 114058] [client-handshake.c:1524:client_query_portmap_cbk] 0-gv0-client-1: failed to get the port number for remote subvolume. Please run 'gluster volume status' on server to see if brick process is running.



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