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From: PGNet Dev <pgnet.dev@gmail.com>
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Date: Sun, 29 Nov 2015 15:10:09 -0800
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Subject: [linux-lvm] errors on lvcreate snapshot : "device-mapper: remove
 ioctl on (...) failed: Device or resource busy";
 still unresolved old issue, or new?
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To: linux-lvm@redhat.com

I run

	lvs --version
		LVM version:     2.02.120(2) (2015-05-15)
		Library version: 1.03.01 (2015-05-15)
		Driver version:  4.33.0

on OpenSUSE Leap

	lsb_release -rd
		Description:    openSUSE Leap 42.1 (x86_64)
		Release:        42.1

Exec of LV snapshots of active LVs reports ERRORs

	lvs
		LV      VG      Attr       LSize   Pool Origin Data%  Meta%  Move Log 
Cpy%Sync Convert
		LV01    VG0     -wi-ao---- 352.00m 

		LV02    VG0     -wi-ao----   5.00g 

		LV03    VG0     -wi-ao---- 512.00m
	lvcreate -L 352M -s -n SNAP01 /dev/VG0/LV01
		device-mapper: remove ioctl on (254:3) failed: Device or resource busy
		Logical volume "SNAP01" created.
	lvcreate -L 512M -s -n SNAP03 /dev/VG0/LV03
		device-mapper: remove ioctl on (254:15) failed: Device or resource busy
		Logical volume "SNAP03" created.
	lvcreate -L 5G   -s -n SNAP02 /dev/VG0/LV02
		device-mapper: remove ioctl on (254:18) failed: Device or resource busy
		Logical volume "SNAP02" created.

similar to similar errors referenced in BUG

	Bug 927437 - "device-mapper: remove ioctl on failed" error when 
creating thin pool volume
	https://bugzilla.redhat.com/show_bug.cgi?id=927437#c10

but still creates the snapshot LVs

	lvs | grep SNAP
		LV          VG      Attr       LSize   Pool Origin Data%  Meta%  Move 
Log Cpy%Sync Convert
		SNAP01      VG0     swi-a-s--- 352.00m        LV01 0.00 

		SNAP02      VG0     swi-a-s---   5.00g        LV02 0.01 

		SNAP03      VG0     swi-a-s--- 512.00m        LV03 0.00 


Are the "device-mapper: remove ioctl on (254:18) failed" still the 
same/similar issue  as #927437, new upstream issue, or distro-specific?