This time I have a distribute volume with two bricks on the same node, 
the volume is yet not started and the quota is enabled and while trying to set limit-usage. The glusterd crashes,

Logs:-


gluster> volume info dist2

Volume Name: dist2
Type: Distribute
Status: Created
Number of Bricks: 2
Transport-type: tcp
Bricks:
Brick1: 10.1.12.135:/mnt/dist2-a
Brick2: 10.1.12.135:/mnt/dist2-b
Options Reconfigured:
features.limit-usage: /dist1:2MB
monitor.xtime-marker: on
features.quota: on
gluster> 
gluster> volume quota dist1 remove 
Usage: volume quota <VOLNAME> <enable|disable|limit-usage|list|remove> [args] [path]
gluster> volume quota dist1 remove /dist1

gluster> volume quota dist2 limit-usage /dist2 2MB
gluster> volume start dist2
Connection failed. Please check if gluster daemon is operational.
[root@centos-qa-client-3 sbin]# 


##################bt of the core#############


#0  0x0000003a8a630265 in raise () from /lib64/libc.so.6
(gdb) bt
#0  0x0000003a8a630265 in raise () from /lib64/libc.so.6
#1  0x0000003a8a631d10 in abort () from /lib64/libc.so.6
#2  0x0000003a8a66a84b in __libc_message () from /lib64/libc.so.6
#3  0x0000003a8a67230f in _int_free () from /lib64/libc.so.6
#4  0x0000003a8a67276b in free () from /lib64/libc.so.6
#5  0x00002b5ca7844a04 in __gf_free (free_ptr=0x78ef5c0) at mem-pool.c:259
#6  0x00002b5ca781ba1b in data_destroy (data=0x78ef5e0) at dict.c:140
#7  0x00002b5ca781c3c1 in _dict_set (this=0x78ee750, key=<value optimized out>, value=0x78f1360) at dict.c:245
#8  dict_set (this=0x78ee750, key=<value optimized out>, value=0x78f1360) at dict.c:300
#9  0x00002aaaaaae2d21 in glusterd_quota_limit_usage (volinfo=0x78eec60, dict=0x78eb9d0, op_errstr=0x7ffff6f1a1f8) at glusterd-op-sm.c:4519
#10 0x00002aaaaaae3b64 in glusterd_op_quota (dict=0x78eb9d0, op_errstr=0x7ffff6f1a1f8) at glusterd-op-sm.c:4626
#11 0x00002aaaaaaed9b3 in glusterd_op_stage_validate (op=<value optimized out>, dict=0x78eb9d0, op_errstr=0x7ffff6f1a1f8, rsp_dict=0xffffffffffffffff)
    at glusterd-op-sm.c:6707
#12 0x00002aaaaaaeed86 in glusterd_op_ac_send_stage_op (event=<value optimized out>, ctx=<value optimized out>) at glusterd-op-sm.c:5869
#13 0x00002aaaaaadb3ef in glusterd_op_sm () at glusterd-op-sm.c:7589
#14 0x00002aaaaaac98a2 in glusterd_handle_quota (req=0x2aaaaad25024) at glusterd-handler.c:1760
#15 0x00002b5ca7a7bfcc in rpcsvc_handle_rpc_call (svc=0x78e2060, trans=<value optimized out>, msg=0x7e68040) at rpcsvc.c:480
#16 0x00002b5ca7a7c1cc in rpcsvc_notify (trans=0x78ecb70, mydata=0x735, event=<value optimized out>, data=0x7e68040) at rpcsvc.c:576
#17 0x00002b5ca7a7d0f7 in rpc_transport_notify (this=0x735, event=RPC_TRANSPORT_MSG_SENT, data=0xffffffffffffffff) at rpc-transport.c:899
#18 0x00002aaaaadd8f7f in socket_event_poll_in (this=0x78ecb70) at socket.c:1641
#19 0x00002aaaaadd9128 in socket_event_handler (fd=<value optimized out>, idx=3, data=0x78ecb70, poll_in=1, poll_out=0, poll_err=0) at socket.c:1756
#20 0x00002b5ca7843a51 in event_dispatch_epoll_handler (event_pool=0x78e0360) at event.c:794
#21 event_dispatch_epoll (event_pool=0x78e0360) at event.c:856
#22 0x0000000000405218 in main (argc=1, argv=0x7ffff6f1aad8) at glusterfsd.c:1476
(gdb)