After upgrading to Kubuntu 24.10 yesterday, mounting my encrypted btrfs disks during boot no longer works. The system/primary boot disk, which is also encrypted, is not affected. The disks can be mounted manually via a terminal without any problems and are usable then. As the same thing happened to me with the 24.04 upgrade, I now have to investigate the cause; last time only a new installation helped, this time I had to use Timeshift.
Unfortunately, many help instructions deal with an encrypted boot partition, but it works for me. I have tried many of the suggested solutions from various sources (updating grub, rebuilding initramfs, keyfile pattern in configuration etc) but none of them have had any effect.
Before I try to install the upgrade again, I would be very grateful for any suggestions!
My steps
I have upgraded the system according to the official instructions.
After the upgrade, I restarted the system. The system started, the Grub menu appeared and I selected Kubuntu. I was prompted to enter the password for LUKS; that also worked. The system disk can be unlocked without any problems.
After that, however, the system locked up for 90 seconds because it cannot mount the btrfs disks (on which /home is also located). It then boots up to the login screen. The 90-second timeout can be fixed by commenting out the two btrfs entries in fstab.
fstab
# <file system> <mount point> <type> <options> <dump> <pass>
#UUID=965E-2AC0 /boot/efi vfat defaults 0 2
UUID=dc5dea20-a27c-4d6b-af94-eb475db79f3f /boot ext4 defaults 0 2
/dev/mapper/luks-c1e3cbb8-73d0-49e8-b173-59455bb7279d / ext4 defaults 0 1
/swapfile swap swap defaults 0 0
tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0
# SSD Storage Pool
UUID=8429c8ad-62be-4298-8326-7f202187a03e /mnt/xxxxx_ssd btrfs defaults,noatime,autodefrag,compress=zstd 0 2
# HDD Storage Pool
UUID=6f9a885d-d08f-4684-a979-223d1e9c4edc /mnt/xxxxx_hdd btrfs defaults,noatime,autodefrag,compress=zstd 0 2
# Raspberry PI (WebDAV)
https://192.168.100.99/xxxxx-webdav /mnt/xxxxx_ssd/home/xxxxx/.mounts/xxxxx-raspi davfs noauto,user,rw 0 0
https://192.168.100.99/transfer-webdav /mnt/xxxxx_ssd/home/xxxxx/.mounts/transfer-raspi davfs noauto,user,rw 0 0
# Bind HOME
/mnt/xxxxx_ssd/home /home none bind
UUID=965E-2AC0 /boot/efi vfat defaults 0 1
crypttab
# <name> <device> <password> <options>
luks-c1e3cbb8-73d0-49e8-b173-59455bb7279d UUID=c1e3cbb8-73d0-49e8-b173-59455bb7279d none
# SSD Storage Pool
xxxxx_ssd_1 UUID=79c67ffa-70f5-4f7c-ae48-7a6a8b2f909b /etc/storagekeys/xxxxx_ssd.key luks,noearly,discard
xxxxx_ssd_2 UUID=7534ad5d-094e-4259-aaa5-1fa1e63b5a21 /etc/storagekeys/xxxxx_ssd.key luks,noearly,discard
# HDD Storage Pool
xxxxx_hdd_1 UUID=0525c36c-6ff2-4a42-9b8b-edc21ca62f31 /etc/storagekeys/xxxxx_hdd.key luks,noearly
xxxxx_hdd_2 UUID=e0a7ae73-e13f-492f-82ad-3c2a9dff75f3 /etc/storagekeys/xxxxx_hdd.key luks,noearly
Output of blkid
/dev/mapper/luks-c1e3cbb8-73d0-49e8-b173-59455bb7279d: LABEL="kubuntu_2404" UUID="93370c80-cb8b-4b5d-9da5-8139400a5361" BLOCK_SIZE="4096" TYPE="ext4"
/dev/nvme0n1p5: LABEL="kubuntu_boot" UUID="dc5dea20-a27c-4d6b-af94-eb475db79f3f" BLOCK_SIZE="4096" TYPE="ext4" PARTLABEL="kubuntu_boot" PARTUUID="c91f9fe9-a67f-4d01-a6c1-333cf0bed36a"
/dev/nvme0n1p3: LABEL="WinSystem" BLOCK_SIZE="512" UUID="54FC642DFC640C14" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="5fdf9496-8daf-4df1-9887-4a63e2d93f59"
/dev/nvme0n1p1: UUID="965E-2AC0" BLOCK_SIZE="512" TYPE="vfat" PARTLABEL="EFI system partition" PARTUUID="9ce15353-1e7e-44b6-856b-496df47550b9"
/dev/nvme0n1p6: UUID="c1e3cbb8-73d0-49e8-b173-59455bb7279d" TYPE="crypto_LUKS" PARTLABEL="kubuntu_2404" PARTUUID="14b68a26-8039-4ae8-b156-617e92a81c18"
/dev/nvme0n1p4: BLOCK_SIZE="512" UUID="6408A54608A51856" TYPE="ntfs" PARTUUID="9d67681d-9424-4785-b5a8-b67e5d77a4e2"
/dev/sdd: UUID="7534ad5d-094e-4259-aaa5-1fa1e63b5a21" TYPE="crypto_LUKS"
/dev/sdb: UUID="79c67ffa-70f5-4f7c-ae48-7a6a8b2f909b" TYPE="crypto_LUKS"
/dev/sdc: UUID="e0a7ae73-e13f-492f-82ad-3c2a9dff75f3" TYPE="crypto_LUKS"
/dev/sda: UUID="0525c36c-6ff2-4a42-9b8b-edc21ca62f31" TYPE="crypto_LUKS"
Output of lsblk
sda 8:0 0 1,8T 0 disk
└─xxxxx_hdd_1 252:3 0 1,8T 0 crypt /mnt/xxxxx_hdd
sdb 8:16 0 465,8G 0 disk
└─xxxxx_ssd_1 252:4 0 465,7G 0 crypt /home
/mnt/xxxxx_ssd
sdc 8:32 0 1,8T 0 disk
└─xxxxx_hdd_2 252:1 0 1,8T 0 crypt
sdd 8:48 0 465,8G 0 disk
└─xxxxx_ssd_2 252:2 0 465,7G 0 crypt
nvme0n1 259:0 0 931,5G 0 disk
├─nvme0n1p1 259:1 0 100M 0 part /boot/efi
├─nvme0n1p2 259:2 0 16M 0 part
├─nvme0n1p3 259:3 0 499,2G 0 part
├─nvme0n1p4 259:4 0 783M 0 part
├─nvme0n1p5 259:5 0 4G 0 part /boot
└─nvme0n1p6 259:6 0 427,4G 0 part
└─luks-c1e3cbb8-73d0-49e8-b173-59455bb7279d 252:0 0 427,4G 0 crypt /var/snap/firefox/common/host-hunspell
/
If further configurations or files are required, I will be happy to provide them.