Bug#881916: lvm2: initramfs generation fails if neither /etc/udev/rules.d/69-lvm-metad.rules nor /lib/udev/rules.d/69-lvm-metad.rules exists

[Michael Prokop]

Package: lvm2
Version: 2.02.176-4
Severity: normal

On the Grml live system we're removing
/lib/udev/rules.d/69-lvm-metad.rules by intention to avoid
unrequested LVM scanning by default.

When generating the initramfs it fails with just:

| E: /usr/share/initramfs-tools/hooks/lvm2 failed with return 1.

and without any hint why this actually failed.

Would be good to have at least:

  echo "Error: neither /etc/udev/rules.d/$rules nor /lib/udev/rules.d/$rules found." >&2

in /usr/share/initramfs-tools/hooks/lvm2 before the "exit 1".

Speaking of which, are the udev rules strictly needed though?
Wouldn't it be an option to just warn about it and not "exit 1"?

PS: I would have provided this as a patch, but
https://anonscm.debian.org/cgit/pkg-lvm/old/lvm2.git/ doesn't
provide the source for the version we currently have in Debian and
https://anonscm.debian.org/cgit/pkg-lvm/lvm2.git/ no longer exists.

regards,
-mika-