[oe] [meta-oe][PATCH v2 1/2] lvm2: libdevicemapper package needs udev rules and dmsetup

[Patrick Ohly]

Applications like kpartx and cryptsetup were broken by moving only
libdevicemapper itself into a separate package: as a result of that
change, lvm2 was not getting pulled into images anymore although
libdevicemapper depends on dmsetup and udev rules to be fully
functional.

For example, "kpartx -as" started to hang while waiting for the udev
rules to trigger, which is what creates the /dev/mapper/ entries for
the new partitions (see also
https://github.com/docker/docker/issues/22025#issuecomment-243943728).

Putting udev rules and dmsetup also into libdevicemapper is perhaps
counter-intuitive, but necessary to keep the package functioning. A
full lvm2 installation is guaranteed to pull them in, too, both
because of implicit library dependencies and (just to be sure) an
explicit RDEPENDS.

lvm2-native doesn't have packages, so this RDEPENDS must be limited to
the target case.

Signed-off-by: Patrick Ohly <patrick.ohly at intel.com>
---
 meta-oe/recipes-support/lvm2/lvm2.inc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/meta-oe/recipes-support/lvm2/lvm2.inc b/meta-oe/recipes-support/lvm2/lvm2.inc
index 3e79552..cfa74d4 100644
--- a/meta-oe/recipes-support/lvm2/lvm2.inc
+++ b/meta-oe/recipes-support/lvm2/lvm2.inc
@@ -83,14 +83,17 @@ SYSTEMD_AUTO_ENABLE = "disable"
 
 TARGET_CC_ARCH += "${LDFLAGS}"
 
-FILES_${PN} += "${libdir}/device-mapper/*.so ${nonarch_base_libdir}/udev"
+FILES_${PN} += "${libdir}/device-mapper/*.so"
 FILES_${PN}-scripts = " \
     ${sbindir}/blkdeactivate \
     ${sbindir}/fsadm \
     ${sbindir}/lvmconf \
     ${sbindir}/lvmdump \
 "
-FILES_libdevmapper = "${libdir}/libdevmapper.so.*"
+# Specified explicitly for the udev rules, just in case that it does not get picked
+# up automatically:
+RDEPENDS_${PN}_append_class-target = " libdevmapper"
+FILES_libdevmapper = "${sbindir}/dmsetup ${libdir}/libdevmapper.so.* ${nonarch_base_libdir}/udev/rules.d"
 FILES_libdevmapper-dev = " \
     ${libdir}/libdevmapper.so \
     ${libdir}/pkgconfig/devmapper.pc \

base-commit: 6c584374a599f6f8d3607f20ecfc13a67ccf1da1
-- 
git-series 0.9.1