Description of problem:
After some I/O glusterfsd crashed

Version-Release number of selected component (if applicable):
[root@rhs-gp-srv9 core]# rpm -qa | grep gluster
glusterfs-fuse-3.3.0.5rhs-40.el6rhs.x86_64
vdsm-gluster-4.9.6-17.el6rhs.noarch
gluster-swift-plugin-1.0-5.noarch
gluster-swift-account-1.4.8-4.el6.noarch
glusterfs-3.3.0.5rhs-40.el6rhs.x86_64
gluster-swift-doc-1.4.8-4.el6.noarch
glusterfs-debuginfo-3.3.0.5rhs-40.el6rhs.x86_64
glusterfs-server-3.3.0.5rhs-40.el6rhs.x86_64
glusterfs-rdma-3.3.0.5rhs-40.el6rhs.x86_64
gluster-swift-object-1.4.8-4.el6.noarch
gluster-swift-container-1.4.8-4.el6.noarch
org.apache.hadoop.fs.glusterfs-glusterfs-0.20.2_0.2-1.noarch
gluster-swift-1.4.8-4.el6.noarch
gluster-swift-proxy-1.4.8-4.el6.noarch
glusterfs-geo-replication-3.3.0.5rhs-40.el6rhs.x86_64


How reproducible:


Steps to Reproduce:
1. created a distributed-replicate volume 
2. this was used as storage for vms
3. after creating some vms couple of crashed found
  
Actual results:


Expected results:


Additional info:
==================
#0  0x00000038b124757c in vfprintf () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.47.el6_2.12.x86_64 libaio-0.3.107-10.el6.x86_64 libgcc-4.4.6-3.el6.x86_64 openssl-1.0.0-20.el6_2.5.x86_64 zlib-1.2.3-27.el6.x86_64
(gdb) bt
#0  0x00000038b124757c in vfprintf () from /lib64/libc.so.6
#1  0x00000038b12ff24c in __vasprintf_chk () from /lib64/libc.so.6
#2  0x00000038b2619550 in vasprintf (domain=0x1c37cd0 "dis-rep-server", file=0x7faef359d477 "server.c", 
    function=0x7faef359df20 "server_rpc_notify", line=770, level=GF_LOG_INFO, fmt=0x7faef359da68 "disconnecting connectionfrom %s")
    at /usr/include/bits/stdio2.h:199
#3  _gf_log (domain=0x1c37cd0 "dis-rep-server", file=0x7faef359d477 "server.c", function=0x7faef359df20 "server_rpc_notify", 
    line=770, level=GF_LOG_INFO, fmt=0x7faef359da68 "disconnecting connectionfrom %s") at logging.c:565
#4  0x00007faef3578cbe in server_rpc_notify (rpc=<value optimized out>, xl=0x1c3a120, event=<value optimized out>, data=0x1c2d3e0)
    at server.c:769
#5  0x00000038b2a07c55 in rpcsvc_handle_disconnect (svc=0x1c3c030, trans=0x1c2d3e0) at rpcsvc.c:569
#6  0x00000038b2a0a620 in rpcsvc_notify (trans=0x1c2d3e0, mydata=<value optimized out>, event=<value optimized out>, 
    data=<value optimized out>) at rpcsvc.c:607
#7  0x00000038b2a0b018 in rpc_transport_notify (this=<value optimized out>, event=<value optimized out>, data=<value optimized out>)
    at rpc-transport.c:489
#8  0x00007faef95199e4 in socket_event_poll_err (this=0x1c2d3e0) at socket.c:685
#9  0x00007faef9520a9e in socket_event_handler (fd=<value optimized out>, idx=3, data=0x1c2d3e0, poll_in=1, poll_out=0, 
    poll_err=<value optimized out>) at socket.c:1799
#10 0x00000038b263ed34 in event_dispatch_epoll_handler (event_pool=0x1c13e10) at event.c:785
#11 event_dispatch_epoll (event_pool=0x1c13e10) at event.c:847
#12 0x00000000004076b0 in main (argc=<value optimized out>, argv=0x7fff022677c8) at glusterfsd.c:1782