subiquity

Bug #1895192
Comment #5

Comment 5 for bug 1895192

Revision history for this message

Lukas Märdian (slyon) wrote on 2021-07-27:

Indeed, the cmdline defines root=UUID=288689a9-116a-4867-93a2-75a963062c61 while /target/etc/fstab contains:
/dev/disk/by-id/dm-uuid-LVM-wZilMCEJKlgdikVkEQdHhMiC8wYpJXVuDn9HuJvMYqYZu5DCbwb7nmGjMthndwJE

After reboot, inside the initramfs, it isn't able to setup or find any LVM LVs or VGs and nothing which would contain this UUID.

Some more information about the installed system, after installation, but before reboot (incl /etc/fstab):

root@ubuntu-server:/# blkid
/dev/loop0: UUID="2021-02-01-17-59-46-00" LABEL="Ubuntu-Server 20.04.2 LTS s390x" TYPE="iso9660"
/dev/loop1: TYPE="squashfs"
/dev/loop2: TYPE="squashfs"
/dev/loop3: TYPE="squashfs"
/dev/loop4: TYPE="squashfs"
/dev/loop5: TYPE="squashfs"
/dev/loop6: TYPE="squashfs"
/dev/loop7: TYPE="squashfs"
/dev/mapper/mpathb-part2: UUID="3987c78e-f671-4079-ac05-f8b7fe768b55" TYPE="crypto_LUKS" PARTUUID="87303b99-a04d-4c30-b395-f342c79fef70"
/dev/mapper/ubuntu--vg-ubuntu--lv: UUID="288689a9-116a-4867-93a2-75a963062c61" TYPE="ext4"
/dev/sda1: UUID="1996c31a-e597-4e80-a637-4f2a779508da" TYPE="ext4" PARTUUID="2bc02ff5-a24f-4fc5-a35e-0690a2b4ca61"
/dev/sda2: UUID="3987c78e-f671-4079-ac05-f8b7fe768b55" TYPE="crypto_LUKS" PARTUUID="46f12d4e-6396-468d-b8d7-231e3e24e713"
/dev/sdc1: UUID="1996c31a-e597-4e80-a637-4f2a779508da" TYPE="ext4" PARTUUID="2bc02ff5-a24f-4fc5-a35e-0690a2b4ca61"
/dev/sdc2: UUID="3987c78e-f671-4079-ac05-f8b7fe768b55" TYPE="crypto_LUKS" PARTUUID="46f12d4e-6396-468d-b8d7-231e3e24e713"
/dev/mapper/mpathb: PTUUID="0d8b6a8b-cd60-46fd-9ec8-24d5e3541d6f" PTTYPE="gpt"
/dev/sde1: UUID="1996c31a-e597-4e80-a637-4f2a779508da" TYPE="ext4" PARTUUID="2bc02ff5-a24f-4fc5-a35e-0690a2b4ca61"
/dev/sde2: UUID="3987c78e-f671-4079-ac05-f8b7fe768b55" TYPE="crypto_LUKS" PARTUUID="46f12d4e-6396-468d-b8d7-231e3e24e713"
/dev/sdg1: UUID="1996c31a-e597-4e80-a637-4f2a779508da" TYPE="ext4" PARTUUID="2bc02ff5-a24f-4fc5-a35e-0690a2b4ca61"
/dev/sdg2: UUID="3987c78e-f671-4079-ac05-f8b7fe768b55" TYPE="crypto_LUKS" PARTUUID="46f12d4e-6396-468d-b8d7-231e3e24e713"
/dev/mapper/mpathb-part1: UUID="1996c31a-e597-4e80-a637-4f2a779508da" TYPE="ext4" PARTUUID="ca1fd1ac-f705-4096-954d-7a1b07ab3891"
/dev/mapper/dm_crypt-0: UUID="SukiDx-6oBb-g2vY-YoGP-fd6y-fFbD-ZIPf5d" TYPE="LVM2_member"

root@ubuntu-server:/# cat /target/etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/ubuntu-vg/ubuntu-lv during curtin installation
/dev/disk/by-id/dm-uuid-LVM-wZilMCEJKlgdikVkEQdHhMiC8wYpJXVuDn9HuJvMYqYZu5DCbwb7nmGjMthndwJE / ext4 defaults 0 0
# /boot was on /dev/mapper/mpathb-part1 during curtin installation
/dev/disk/by-id/dm-uuid-part1-mpath-36005076306ffd6b6000000000000260a /boot ext4 defaults 0 0
/swap.img none swap sw 0 0

root@ubuntu-server:/# cat /target/etc/crypttab
dm_crypt-0 UUID=3987c78e-f671-4079-ac05-f8b7fe768b55 none luks

After reboot, inside the initramfs, it isn't able to setup or find any LVM LVs or VGs and nothing which would contain this UUID.

Some more information about the installed system, after installation, but before reboot (incl /etc/fstab):

root@ubuntu-server:/# lsblk
NAME                          MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
loop0                           7:0    0   765M  1 loop  /target/cdrom
loop1                           7:1    0 328.7M  1 loop  /media/filesystem
loop2                           7:2    0 231.4M  1 loop
loop3                           7:3    0  15.6M  1 loop  /usr/lib/modules
loop4                           7:4    0  47.9M  1 loop  /snap/core18/1945
loop5                           7:5    0  50.8M  1 loop  /snap/subiquity/2278
loop6                           7:6    0    29M  1 loop  /snap/snapd/10704
loop7                           7:7    0  62.9M  1 loop  /snap/lxd/19189
sda                             8:0    0    64G  0 disk
|-sda1                          8:1    0     1G  0 part
|-sda2                          8:2    0    63G  0 part
`-mpathb                      253:1    0    64G  0 mpath
  |-mpathb-part1              253:2    0     1G  0 part  /target/boot
  `-mpathb-part2              253:3    0    63G  0 part
    `-dm_crypt-0              253:4    0    63G  0 crypt
      `-ubuntu--vg-ubuntu--lv 253:5    0  31.5G  0 lvm   /target
sdb                             8:16   0    64G  0 disk
`-mpatha                      253:0    0    64G  0 mpath
sdc                             8:32   0    64G  0 disk
|-sdc1                          8:33   0     1G  0 part
|-sdc2                          8:34   0    63G  0 part
`-mpathb                      253:1    0    64G  0 mpath
  |-mpathb-part1              253:2    0     1G  0 part  /target/boot
  `-mpathb-part2              253:3    0    63G  0 part
    `-dm_crypt-0              253:4    0    63G  0 crypt
      `-ubuntu--vg-ubuntu--lv 253:5    0  31.5G  0 lvm   /target
sdd                             8:48   0    64G  0 disk
`-mpatha                      253:0    0    64G  0 mpath
sde                             8:64   0    64G  0 disk
|-sde1                          8:65   0     1G  0 part
|-sde2                          8:66   0    63G  0 part
`-mpathb                      253:1    0    64G  0 mpath
  |-mpathb-part1              253:2    0     1G  0 part  /target/boot
  `-mpathb-part2              253:3    0    63G  0 part
    `-dm_crypt-0              253:4    0    63G  0 crypt
      `-ubuntu--vg-ubuntu--lv 253:5    0  31.5G  0 lvm   /target
sdf                             8:80   0    64G  0 disk
`-mpatha                      253:0    0    64G  0 mpath
sdg                             8:96   0    64G  0 disk
|-sdg1                          8:97   0     1G  0 part
|-sdg2                          8:98   0    63G  0 part
`-mpathb                      253:1    0    64G  0 mpath
  |-mpathb-part1              253:2    0     1G  0 part  /target/boot
  `-mpathb-part2              253:3    0    63G  0 part
    `-dm_crypt-0              253:4    0    63G  0 crypt
      `-ubuntu--vg-ubuntu--lv 253:5    0  31.5G  0 lvm   /target
sdh                             8:112  0    64G  0 disk
`-mpatha                      253:0    0    64G  0 mpath

root@ubuntu-server:/# cat /target/etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/ubuntu-vg/ubuntu-lv during curtin installation
/dev/disk/by-id/dm-uuid-LVM-wZilMCEJKlgdikVkEQdHhMiC8wYpJXVuDn9HuJvMYqYZu5DCbwb7nmGjMthndwJE / ext4 defaults 0 0
# /boot was on /dev/mapper/mpathb-part1 during curtin installation
/dev/disk/by-id/dm-uuid-part1-mpath-36005076306ffd6b6000000000000260a /boot ext4 defaults 0 0
/swap.img       none    swap    sw      0       0

root@ubuntu-server:/# cat /target/etc/crypttab
dm_crypt-0 UUID=3987c78e-f671-4079-ac05-f8b7fe768b55 none luks