dm thin facility incomplete - thin-provisioning-tools not packaged

[Neil Wilson]

The lvm2 package is built with --with-thin=internal option activated, but the supporting userspace activation tools are neither packaged nor depended upon correctly.

The errors reported in Debian at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=673000#17 also occur on Ubuntu Quantal.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: lvm2 2.02.95-4ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5
Uname: Linux 3.5.0-17-generic x86_64
ApportVersion: 2.6.1-0ubuntu3
Architecture: amd64
Date: Tue Oct 16 14:57:35 2012
SourcePackage: lvm2
UpgradeStatus: No upgrade log present (probably fresh install)

[Neil Wilson (neil-aldur)]

Userspace tools for thin are at:

https://github.com/jthornber/thin-provisioning-tools

[Neil Wilson (neil-aldur)]

Package repo at https://github.com/NeilW/deb-thin-provisioning-tools

ITP at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=690693

[Oliver Brakmann (obrakmann)]

The thin-provisiong-tools package has landed in Sid a few days ago: http://packages.debian.org/sid/thin-provisioning-tools.

Can it still be included in Saucy so that the feature may be stabilized for 14.04 LTS?

[elatllat (elatllat)]

4 years later and this is still an issue on Ubuntu 16.04/Linux 4.4/LVM 2.02.133.

## setup;
apt-get install -y lvm2
mkdir test
cd test/
dd if=/dev/zero of=lvma.img bs=1M count=10
dd if=/dev/zero of=lvmb.img bs=1M count=10
dd if=/dev/zero of=lvmc.img bs=1M count=10
losetup /dev/loop0 lvma.img
losetup /dev/loop1 lvmb.img
losetup /dev/loop2 lvmc.img
pvcreate /dev/loop0 /dev/loop1 /dev/loop2
vgcreate vg_test /dev/loop0 /dev/loop1
S=$(vgdisplay vg_test | grep Free)
lvcreate -l $S vg_test -n lv_test
mke2fs -t ext4 -m 0 /dev/vg_test/lv_test
vgextend vg_test /dev/loop2
S=$(echo "$(vgdisplay vg_test | grep Free | perl -pe 's/^.*? ([0-9])/$1/g;s/ .*//g')-4" | bc )
lvcreate --type cache --cachemode writeback -l $S -n lv_test_cache vg_test/lv_test /dev/loop2

## break attempting to detach then fix;
lvchange -an vg_test/lv_test
  /usr/sbin/cache_check: execvp failed: No such file or directory
  WARNING: Integrity check of metadata for pool vg_test/lv_test_cache failed.
apt-get install thin-provisioning-tools
lvchange -an vg_test/lv_test
vgexport vg_test

#thin-provisioning-tools should be a dependency of lvm2.

[elatllat (elatllat)]

On CentOS 7.2/Linux 3.10 lmv2 depends on device-mapper-persistent-data which is what they call thin-provisioning-tools

repoquery --requires lvm2
yum info device-mapper-persistent-data.x86_64

[Karl-Philipp Richter (krichter722)]

5 years later an this is still and issue on 17.10. It's possible to create complex LVMs setups, e.g. the one described at https://www.thomas-krenn.com/de/wiki/LVM_Caching_mit_SSDs_einrichten, but then at the first mount the missing `/usr/sbin/check_cache` binary causes the mount to fail until `thin-provisioning-tools` is installed.