Description of problem:
Touching file failed when we access ec (4+2)*1 volume by samba-4.8.3 cifs.

Version-Release number of selected component (if applicable):
gluster-6.0
samba-4.8.3

How reproducible:


Steps to Reproduce:
1.server1: create ec (4+2)*1 volume test
2.server1: gluster v set test user.cifs on
3.client:  mount -t cifs -o username=root,password=foobar, \\\\server1\\test /root/dir
4.client: cd /root/dir && for i in `seq 1 10000`; do touch file-$i ; done

Actual results:
[root@client1 aa]# for i in `seq 1 10000`; do touch filee-$i ; done
touch: setting times of ‘filee-1501’: No such file or directory

Expected results:
Touch file-1 to file-10000 success.