Description:
When I create a snapshot, lvm tells me:

[code]
/usr/sbin/dmeventd: stat failed: No such file or directory
/usr/sbin/dmeventd: stat failed: No such file or directory
VGSSD1-lvm_backup_snapshot: event registration failed: No such process
VGSSD1/snapshot0: snapshot segment monitoring function failed.
Logical volume "lvm_backup_snapshot" created
[/code]

and when I remove it:

[code]
/usr/sbin/dmeventd: stat failed: No such file or directory
Logical volume "lvm_backup_snapshot" successfully removed
[/code]

Things _appear_ to work fine otherwise (i.e. the snapshot contains files.)

Additional info:
* package version(s)
lvm2 / device-mapper 2.02.95-2

* config and/or log files etc.
dmesg|tail:
[code]
[ 66.869274] lvcreate: sending ioctl 1261 to a partition!
[ 66.869282] lvcreate: sending ioctl 1261 to a partition!
[ 66.869287] lvcreate: sending ioctl 1261 to a partition!
[ 67.071521] EXT4-fs (dm-3): mounted filesystem with ordered data mode. Opts: (null)
[/code]

Steps to reproduce:
[code]
lvcreate --permission r --size 1G --snapshot --name lvm_backup_snapshot /dev/VGSSD1/ArchRoot64
lvremove -f /dev/VGSSD1/lvm_backup_snapshot
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