Public bug reported:
On my system the root filesystem is located on a logical volume. I have
constant boot delay of 30 seconds. My current conclusion is that this
problem exists due to lvm performing the initramfs-tools local-top
initialization incorrectly.
According to initramfs-tools(8):
local-top OR nfs-top After these scripts have been executed, the root device
node is expected to be present (local) or the network interface is expected to
be usable (NFS).
But what /usr/share/initramfs-tools/scripts/local-top/lvm2 is simply try
to activate the requested root volume by means of scanning the (at that
moment) available block devices. What happens on my system is that
local-top/lvm2 is executed before the pv block device (SATA-SSD) shows
up. Then initramfs-tools calls the wait-for-root executable which waits
for the root device node notification via udev.
This has a (minimum) timeout of 30 seconds configured. This timeout is
exceeded since nothing will make the root volume device to be created.
Then later (I guess in local-block) the root volume device is created
(since the pv is available).
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: lvm2 2.02.176-4.1ubuntu3
ProcVersionSignature: Ubuntu 4.15.0-42.45-generic 4.15.18
Uname: Linux 4.15.0-42-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sat Dec 8 13:52:06 2018
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_AT.UTF-8
SHELL=/bin/bash
SourcePackage: lvm2
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: lvm2 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic
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https://bugs.launchpad.net/bugs/1807499
Title:
30 seconds boot delay when root fs is on lvm
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