Created attachment 1559740 [details]
lvm2-shutdown.log

Description of problem:
When shutdown, this job timeout then delays shutdown time

Version-Release number of selected component (if applicable):
lvm2-2.02.184-2.el7.x86_64
kernel-3.10.0-1040.el7.x86_64
device-mapper-1.02.156-2.el7.x86_64


How reproducible:
100%

Steps to Reproduce:
tested on guest:
1. start a normal guest
[root@localhost ~]# lsblk
NAME          MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vda           252:0    0  10G  0 disk 
├─vda1        252:1    0   1G  0 part /boot
└─vda2        252:2    0   9G  0 part 
  ├─rhel-root 253:0    0   8G  0 lvm  /
  └─rhel-swap 253:1    0   1G  0 lvm  [SWAP]
[root@localhost ~]# dmsetup table
rhel-swap: 0 2097152 linear 252:2 2048
rhel-root: 0 16769024 linear 252:2 2099200
[root@localhost ~]# dmsetup status
rhel-swap: 0 2097152 linear 
rhel-root: 0 16769024 linear 
[root@localhost ~]# dmsetup ls --tree
rhel-swap (253:1)
 └─ (252:2)
rhel-root (253:0)
 └─ (252:2)
#  dmsetup info -c
Name             Maj Min Stat Open Targ Event  UUID                                                                
rhel-swap        253   1 L--w    2    1      0 LVM-zmPokncbxNcPsWeo2c88diicfGfuiWMcbQgMG0cVZ7UcC3Dodz6YhxURMg2ipok4
rhel-root        253   0 L--w    1    1      0 LVM-zmPokncbxNcPsWeo2c88diicfGfuiWMcDgEkTYavclVhLHYEWzdSiQ4SO4LjzCU1

2.[root@localhost ~]# shutdown -h now

3.Check guest shutdown progress by virt-manager or virsh console, a lvm2 job is being waited, and it delays the shutdown time:
...
[***   ] A stop job is running for LVM2 metadata daemon (51s / 1min 33s)
...


Actual results:
As step3.

Expected results:
the lvms job should finish quickly then do not delay shutdown

Additional info:
Systemd debugging log from serial console will be put in attachment.
(by booting with "systemd.log_level=debug systemd.log_target=console console=ttyS0,115200 console=tty0")