Failed to connect to lvmetad

Question

After upgrading to ubuntu 16.10 I get this warning in my boot.log file

WARNING: Failed to connect to lvmetad. Falling back to device scanning.
Volume group "ubuntu-vg" not found
Cannot process volume group ubuntu-vg
WARNING: Failed to connect to lvmetad. Falling back to device scanning.
Reading all physical volumes.  This may take a while...
Found volume group "ubuntu-vg" using metadata type lvm2
WARNING: Failed to connect to lvmetad. Falling back to device scanning.
2 logical volume(s) in volume group "ubuntu-vg" now active /dev/mapper/ubuntu--vg-root: clean, 1180656/30154752 files, 16007858/120604672 blocks

Seems to be an issue that is related to disk encryption. The system startup properly and I do not see any bad behaviour, however do anybody have an idea how to fix

Answer 1

I get the same warning on Ubuntu 16.10 with encrypted LVM. I have not found a solution but, for what it's worth, it appears related to the Debian bug reported on 16 Nov 2016.

My server works fine so I'm hoping it's a minor bug that will be fixed in upcoming Ubuntu releases.

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=844487

Dear Maintainer,

I am using Debian Scratch with encrypted root partition. The last kernel version where it worked was 4.6.0. For kernels 4.7.0 and 4.8.0 it prints on the boot repeatedly and forever following messages:

WARNING: Failed to connect to lvmetad. Falling back to device
scanning. Volume group "martin-vg" not found Cannot process volume group martin-vg

In 4.6.0 these messages are shown too, but only twice and then it prompts for a password:

Please unlock disk sda5_crypt: