Public bug reported:
On oracular (probably others as well), by default, the dracut initrd will not
have /etc/lvm/{lvm.conf,lvmlocal.conf}. (This differs from initramsfs-tools
based initrds). As a consequence, systems on which root is on a LV on a LVM VG
with a system_id will fail to be found, because the
system_id configured in /etc/lvm/{lvm.conf,lvmlocal.conf} will not be used by
the LVM in initrd.
So it gets to basic.target and then hangs because root can't be mounted because
the LV can't be
activated because the VG can't be found.
Adding "lvmconf=yes" to the dracut configuration (and then rebuilding the
initrd) will work-around:
$ cat /etc/dracut.conf.d/RBF-lvm.conf
lvmconf=yes
Relevant lines from lvm.conf/lvmlocal.conf:
$ grep system_id *conf | grep -v #
lvm.conf: system_id_source = "lvmlocal"
lvmlocal.conf: system_id = "<redacted>"
Description: Ubuntu 24.10
Release: 24.10
dracut-core 103-1ubuntu3 amd64
Expected: "apt-get install dracut" would successfully convert working
initramfs-tools system to dracut system.
What Happened: System hung at basic.target until initrd was rebuilt
with "lvmconf=yes".
** Affects: dracut (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2088404
Title:
dracut by default fails when lvm has system_id
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