We are using Samba VFS Module with Gluster on Ubuntu 14.04.
When trying to read/write a file from Windows it stops processing and drops.
Can confirm the network stays up and they are able to ping each other.
Increased Samba Logging to Level 2 and can see the below when it stops processing.
Anyway we can decrypt this?


im-temp (ipv4:192.168.10.72:49627) closed connection to service vault01mel
[2016/03/30 12:36:16.407429, 0] ../lib/util/fault.c:72(fault_report)
===============================================================
[2016/03/30 12:36:16.407498, 0] ../lib/util/fault.c:73(fault_report)
INTERNAL ERROR: Signal 11 in pid 21226 (4.1.6-Ubuntu)
Please read the Trouble-Shooting section of the Samba HOWTO
[2016/03/30 12:36:16.407545, 0] ../lib/util/fault.c:75(fault_report)
===============================================================
[2016/03/30 12:36:16.407582, 0] ../source3/lib/util.c:785(smb_panic_s3)
PANIC (pid 21226): internal error
[2016/03/30 12:36:16.408961, 0] ../source3/lib/util.c:896(log_stack_trace)
BACKTRACE: 43 stack frames:
#0 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(log_stack_trace+0x1a) [0x7f4bb7fb8f3a]
#1 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(smb_panic_s3+0x20) [0x7f4bb7fb9010]
#2 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(smb_panic+0x2f) [0x7f4bb9512c6f]
#3 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(+0x1ae86) [0x7f4bb9512e86]
#4 /lib/x86_64-linux-gnu/libpthread.so.0(+0x10340) [0x7f4bb973a340]
#5 /usr/lib/x86_64-linux-gnu/libgfapi.so.0(glfs_chdir+0x76) [0x7f4ba88364a6]
#6 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(vfs_ChDir+0x60) [0x7f4bb90efe00]
#7 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(close_cnum+0x120) [0x7f4bb9105350]
#8 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbXsrv_tcon_disconnect+0x11c) [0x7f4bb912dd3c]
#9 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x141102) [0x7f4bb912e102]
#10 /usr/lib/x86_64-linux-gnu/samba/libdbwrap.so.0(+0x4983) [0x7f4bb4a80983]
#11 /usr/lib/x86_64-linux-gnu/samba/libdbwrap.so.0(+0x4abf) [0x7f4bb4a80abf]
#12 /usr/lib/x86_64-linux-gnu/samba/libdbwrap.so.0(dbwrap_traverse+0xa) [0x7f4bb4a7f5da]
#13 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x13fcc9) [0x7f4bb912ccc9]
#14 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smb2srv_tcon_disconnect_all+0x1a) [0x7f4bb912e27a]
#15 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbXsrv_session_logoff+0x128) [0x7f4bb912ba18]
#16 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x13edb2) [0x7f4bb912bdb2]
#17 /usr/lib/x86_64-linux-gnu/samba/libdbwrap.so.0(+0x4983) [0x7f4bb4a80983]
#18 /usr/lib/x86_64-linux-gnu/samba/libdbwrap.so.0(+0x49bb) [0x7f4bb4a809bb]
#19 /usr/lib/x86_64-linux-gnu/samba/libdbwrap.so.0(+0x4abf) [0x7f4bb4a80abf]
#20 /usr/lib/x86_64-linux-gnu/samba/libdbwrap.so.0(dbwrap_traverse+0xa) [0x7f4bb4a7f5da]
#21 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbXsrv_session_logoff_all+0x3b) [0x7f4bb912be0b]
#22 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x143afd) [0x7f4bb9130afd]
#23 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x143efe) [0x7f4bb9130efe]
#24 /usr/lib/x86_64-linux-gnu/samba/libsmbd_shim.so.0(exit_server_cleanly+0x12) [0x7f4bb7912b22]
#25 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_server_connection_terminate_ex+0x20) [0x7f4bb9113e50]
#26 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x133dd7) [0x7f4bb9120dd7]
#27 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_smb2_request_pending_queue+0x57) [0x7f4bb9116d57]
#28 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_smb2_request_process_write+0x450) [0x7f4bb9121250]
#29 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_smb2_request_dispatch+0xc7d) [0x7f4bb91152fd]
#30 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x128f7b) [0x7f4bb9115f7b]
#31 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x129bfc) [0x7f4bb9116bfc]
#32 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(run_events_poll+0x16c) [0x7f4bb7fcf09c]
#33 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(+0x372f0) [0x7f4bb7fcf2f0]
#34 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x8d) [0x7f4bb69a05ed]
#35 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_process+0x9ca) [0x7f4bb910289a]
#36 smbd(+0x9fa4) [0x7f4bb9b76fa4]
#37 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(run_events_poll+0x16c) [0x7f4bb7fcf09c]
#38 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(+0x372f0) [0x7f4bb7fcf2f0]
#39 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x8d) [0x7f4bb69a05ed]
#40 smbd(main+0x13eb) [0x7f4bb9b73b8b]
#41 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f4bb65f9ec5]
#42 smbd(+0x6f1d) [0x7f4bb9b73f1d]
[2016/03/30 12:36:16.409647, 0] ../source3/lib/util.c:797(smb_panic_s3)
smb_panic(): calling panic action [/usr/share/samba/panic-action 21226]
[2016/03/30 12:36:16.456951, 0] ../source3/lib/util.c:805(smb_panic_s3)
smb_panic(): action returned status 0
[2016/03/30 12:36:16.457071, 0] ../source3/lib/dumpcore.c:317(dump_core)
dumping core in /var/log/samba/cores/smbd

Again:

[2016/03/30 19:21:45.785746, 1] ../source3/smbd/service.c:1130(close_cnum)
win7im-pc (ipv4:192.168.10.72:49168) closed connection to service vault01mel
[2016/03/30 19:21:45.914724, 1] ../source3/param/loadparm.c:2936(lp_idmap_range)
idmap range not specified for domain '*'
[2016/03/30 19:21:45.919980, 2] ../lib/util/modules.c:191(do_smb_load_module)
Module 'aio_pthread' loaded
[2016/03/30 19:21:45.926874, 2] ../lib/util/modules.c:191(do_smb_load_module)
Module 'glusterfs' loaded
[2016/03/30 19:21:45.928579, 2] ../lib/util/modules.c:191(do_smb_load_module)
Module 'recycle' loaded
[2016/03/30 19:21:46.338112, 0] ../source3/modules/vfs_glusterfs.c:292(vfs_gluster_connect)
gv0mel: Initialized volume from server localhost
[2016/03/30 19:21:46.346566, 2] ../source3/smbd/service.c:856(make_connection_snum)
win7im-pc (ipv4:192.168.10.72:49182) connect to service vault01mel initially as user root (uid=0, gid=0) (pid 254
39)
[2016/03/30 19:21:47.357320, 0] ../lib/util/fault.c:72(fault_report)
===============================================================
[2016/03/30 19:21:47.357409, 0] ../lib/util/fault.c:73(fault_report)
INTERNAL ERROR: Signal 11 in pid 24864 (4.1.6-Ubuntu)
Please read the Trouble-Shooting section of the Samba HOWTO
[2016/03/30 19:21:47.357454, 0] ../lib/util/fault.c:75(fault_report)
===============================================================
[2016/03/30 19:21:47.357485, 0] ../source3/lib/util.c:785(smb_panic_s3)
[2016/03/30 19:21:47.357485, 0] ../source3/lib/util.c:785(smb_panic_s3)
PANIC (pid 24864): internal error
[2016/03/30 19:21:47.358717, 0] ../source3/lib/util.c:896(log_stack_trace)
BACKTRACE: 36 stack frames:
#0 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(log_stack_trace+0x1a) [0x7f4bb7fb8f3a]
#1 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(smb_panic_s3+0x20) [0x7f4bb7fb9010]
#2 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(smb_panic+0x2f) [0x7f4bb9512c6f]
#3 /usr/lib/x86_64-linux-gnu/libsamba-util.so.0(+0x1ae86) [0x7f4bb9512e86]
#4 /lib/x86_64-linux-gnu/libpthread.so.0(+0x10340) [0x7f4bb973a340]
#5 /usr/lib/x86_64-linux-gnu/libgfapi.so.0(glfs_chdir+0x76) [0x7f4ba842f4a6]
#6 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(vfs_ChDir+0x60) [0x7f4bb90efe00]
#7 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(close_cnum+0x120) [0x7f4bb9105350]
#8 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbXsrv_tcon_disconnect+0x11c) [0x7f4bb912dd3c]
#9 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x141102) [0x7f4bb912e102]
#10 /usr/lib/x86_64-linux-gnu/samba/libdbwrap.so.0(+0x4983) [0x7f4bb4a80983]
#11 /usr/lib/x86_64-linux-gnu/samba/libdbwrap.so.0(+0x4abf) [0x7f4bb4a80abf]
#12 /usr/lib/x86_64-linux-gnu/samba/libdbwrap.so.0(dbwrap_traverse+0xa) [0x7f4bb4a7f5da]
#13 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x13fcc9) [0x7f4bb912ccc9]
#14 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smb2srv_tcon_disconnect_all+0x1a) [0x7f4bb912e27a]
#15 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbXsrv_session_logoff+0x128) [0x7f4bb912ba18]
#16 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x13edb2) [0x7f4bb912bdb2]
#17 /usr/lib/x86_64-linux-gnu/samba/libdbwrap.so.0(+0x4983) [0x7f4bb4a80983]
#18 /usr/lib/x86_64-linux-gnu/samba/libdbwrap.so.0(+0x4abf) [0x7f4bb4a80abf]
#19 /usr/lib/x86_64-linux-gnu/samba/libdbwrap.so.0(dbwrap_traverse+0xa) [0x7f4bb4a7f5da]
#20 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbXsrv_session_logoff_all+0x3b) [0x7f4bb912be0b]
#21 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x143afd) [0x7f4bb9130afd]
#22 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(+0x143efe) [0x7f4bb9130efe]
#23 /usr/lib/x86_64-linux-gnu/samba/libsmbd_shim.so.0(exit_server_cleanly+0x12) [0x7f4bb7912b22]
#24 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_server_connection_terminate_ex+0x20) [0x7f4bb9113e50]
#25 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(run_events_poll+0x16c) [0x7f4bb7fcf09c]
#26 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(+0x372f0) [0x7f4bb7fcf2f0]
#27 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x8d) [0x7f4bb69a05ed]
#28 /usr/lib/x86_64-linux-gnu/samba/libsmbd_base.so.0(smbd_process+0x9ca) [0x7f4bb910289a]
#29 smbd(+0x9fa4) [0x7f4bb9b76fa4]
#30 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(run_events_poll+0x16c) [0x7f4bb7fcf09c]
#31 /usr/lib/x86_64-linux-gnu/libsmbconf.so.0(+0x372f0) [0x7f4bb7fcf2f0]
#32 /usr/lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x8d) [0x7f4bb69a05ed]
#33 smbd(main+0x13eb) [0x7f4bb9b73b8b]
#34 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f4bb65f9ec5]
#35 smbd(+0x6f1d) [0x7f4bb9b73f1d]
[2016/03/30 19:21:47.359193, 0] ../source3/lib/util.c:797(smb_panic_s3)
smb_panic(): calling panic action [/usr/share/samba/panic-action 24864]
[2016/03/30 19:21:47.591790, 0] ../source3/lib/util.c:805(smb_panic_s3)
smb_panic(): action returned status 0
[2016/03/30 19:21:47.591907, 0] ../source3/lib/dumpcore.c:317(dump_core)
dumping core in /var/log/samba/cores/smbd