[Gluster-devel] mixed 3.7 and 3.6 environment

[David Robinson]

Is there anyway to force a mount of a 3.6 server using a 3.7.6 FUSE 
client?
My production machine is 3.6.6 and my test platform is 3.7.6.  I would 
like to test the 3.7.6 FUSE client but would need for this client to be 
able to mount both a 3.6.6 and a 3.7.6 server.

When I try to mount the 3.6.6 server using a 3.7.6 client, I get the 
following:

[root at ff01bkp glusterfs]# cat homegfs.log
[2015-11-12 16:55:56.860663] I [MSGID: 100030] [glusterfsd.c:2318:main] 
0-/usr/sbin/glusterfs: Started running /usr/sbin/glusterfs version 3.7.6 
(args: /usr/sbin/glusterfs --volfile-server=gfsib01a.corvidtec.com 
--volfile-server-transport=tcp --volfile-id=/homegfs.tcp /homegfs)
[2015-11-12 16:55:56.868032] I [MSGID: 101190] 
[event-epoll.c:632:event_dispatch_epoll_worker] 0-epoll: Started thread 
with index 1
[2015-11-12 16:55:56.871923] W [socket.c:588:__socket_rwv] 0-glusterfs: 
readv on 10.200.70.1:24007 failed (No data available)
[2015-11-12 16:55:56.872236] E [rpc-clnt.c:362:saved_frames_unwind] (--> 
/lib64/libglusterfs.so.0(_gf_log_callingfn+0x192)[0x7f9e5507ea82] (--> 
/lib64/libgfrpc.so.0(saved_frames_unwind+0x1de)[0x7f9e54e49a3e] (--> 
/lib64/libgfrpc.so.0(saved_frames_destroy+0xe)[0x7f9e54e49b4e] (--> 
/lib64/libgfrpc.so.0(rpc_clnt_connection_cleanup+0x7a)[0x7f9e54e4b4da] 
(--> /lib64/libgfrpc.so.0(rpc_clnt_notify+0x88)[0x7f9e54e4bd08] ))))) 
0-glusterfs: forced unwinding frame type(GlusterFS Handshake) 
op(GETSPEC(2)) called at 2015-11-12 16:55:56.871822 (xid=0x1)
[2015-11-12 16:55:56.872254] E [glusterfsd-mgmt.c:1603:mgmt_getspec_cbk] 
0-mgmt: failed to fetch volume file (key:/homegfs.tcp)
[2015-11-12 16:55:56.872283] W [glusterfsd.c:1236:cleanup_and_exit] 
(-->/lib64/libgfrpc.so.0(saved_frames_unwind+0x205) [0x7f9e54e49a65] 
-->/usr/sbin/glusterfs(mgmt_getspec_cbk+0x490) [0x7f9e55556450] 
-->/usr/sbin/glusterfs(cleanup_and_exit+0x69) [0x7f9e555506d9] ) 0-: 
received signum (0), shutting down
[2015-11-12 16:55:56.872299] I [fuse-bridge.c:5683:fini] 0-fuse: 
Unmounting '/homegfs'.
[2015-11-12 16:55:56.872616] W [glusterfsd.c:1236:cleanup_and_exit] 
(-->/lib64/libpthread.so.0(+0x7df3) [0x7f9e53ee5df3] 
-->/usr/sbin/glusterfs(glusterfs_sigwaiter+0xe5) [0x7f9e55550855] 
-->/usr/sbin/glusterfs(cleanup_and_exit+0x69) [0x7f9e555506d9] ) 0-: 
received signum (15), shutting down
David
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