Comment 0 for bug 1573982

Soon after upgrade to Xenial (from 15.10) the boot process got broken. I'm using LVM for /root swap and other partitions.

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The current behaviour is:

When I boot short after the Grub login screen I'm getting log messages like:

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Scanning for Btrfs filesystems
resume: Could not state the resume device file: '/dev/mapper/VolGroup....'
Please type in the full path...
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Then I press ENTER, for a few minutes some errors about floppy device access are raised (for some reason it tries to scan fd0 when floppy drive is empty). And then:

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Gave up waiting for root device. Common problems: ...
...
ALERT! UUID=xxx-xxx.... does not exist.
Dropping to a shell.
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From the BusyBox shell I managed to recover the boot by issuing "lvm vgchange -ay", then exit and then boot continues fine (all LVM file systems are successfully mounted).

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One workaround so far is creating /etc/initramfs-tools/scripts/init-premount/lvm2 script doing "lvm vgchange -ay". But I'm looking for cleaner solution.

Boot used to work fine with 15.10. Actually the first boot after upgrading to Xenial actually worked OK too, I'm not sure what might changed meanwhile (I've been fixing some packages installation since mysql server upgrade has failed).

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# lsb_release -rd
Description: Ubuntu 16.04 LTS
Release: 16.04