Comment # 1 on bug 1132308 from heming zhao

I can't reproduce this bug.  please show me more information.
i.e. run command with lvcreate -vvvvdddd

in virtual machine, my steps: 
(I also ran below cmds in 15sp1, didn't reproduced)
```
linux-s3ub:~ # lsblk
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda      8:0    0  128M  0 disk 
vda    253:0    0   16G  0 disk 
������vda1 253:1    0    8M  0 part 
������vda2 253:2    0 14.1G  0 part /
������vda3 253:3    0  1.9G  0 part [SWAP]
linux-s3ub:~ # 
linux-s3ub:~ # pvcreate /dev/sda
  Physical volume "/dev/sda" successfully created.
linux-s3ub:~ # vgcreate vgtst /dev/sda
  Volume group "vgtst" successfully created
linux-s3ub:~ # lvcreate -L 50m -n lvtst /dev/vgtst
  Rounding up size to full physical extent 52.00 MiB
  Logical volume "lvtst" created.
linux-s3ub:~ # lvs
  LV    VG    Attr       LSize  Pool Origin Data%  Meta%  Move Log Cpy%Sync
Convert
  lvtst vgtst -wi-a----- 52.00m                                                 
linux-s3ub:~ # lvcreate -pr --size "20M" --snapshot --name "snap_lvtst"
/dev/vgtst/lvtst
  Logical volume "snap_lvtst" created.
linux-s3ub:~ # lsblk
NAME                   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda                      8:0    0  128M  0 disk 
������vgtst-lvtst-real     254:1    0   52M  0 lvm  
��� ������vgtst-lvtst        254:0    0   52M  0 lvm  
��� ������vgtst-snap_lvtst   254:3    0   52M  1 lvm  
������vgtst-snap_lvtst-cow 254:2    0   20M  1 lvm  
  ������vgtst-snap_lvtst   254:3    0   52M  1 lvm  
vda                    253:0    0   16G  0 disk 
������vda1                 253:1    0    8M  0 part 
������vda2                 253:2    0 14.1G  0 part /
������vda3                 253:3    0  1.9G  0 part [SWAP]
linux-s3ub:~ # uname -a
Linux linux-s3ub 4.12.14-lp150.12.61-default #1 SMP Tue May 14 18:07:55 UTC
2019 (83c1242) x86_64 x86_64 x86_64 GNU/Linux
linux-s3ub:~ # rpm -qa | grep lvm
liblvm2cmd2_02-2.02.177-lp150.5.1.x86_64
liblvm2app2_2-2.02.177-lp150.5.1.x86_64
lvm2-2.02.177-lp150.5.1.x86_64
linux-s3ub:~ #

```