I installed 19.04 in a VM with full disk encryption, then upgraded
libblockdev from buster-proposed-updates (2.20-7+deb10u1), rebooted, and
I was able to successfully change the passphrase in gnome-disks.
** Changed in: libblockdev (Ubuntu)
Status: New => Fix Released
** Changed in: libblockdev (Ubuntu)
Assignee: Olivier Tilloy (osomon) => (unassigned)
** Changed in: libblockdev (Ubuntu Disco)
Assignee: (unassigned) => Olivier Tilloy (osomon)
** Changed in: libblockdev (Ubuntu Disco)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1837437
Title:
disk content permanently lost when changing LUKS password
Status in libblockdev package in Ubuntu:
Fix Released
Status in libblockdev source package in Disco:
Confirmed
Status in gnome-disk-utility package in Debian:
Unknown
Bug description:
This is fixed upstream. Logging this bug to track the fix in to
Ubuntu.
From the upstream bug:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=928893
Dear Maintainer,
* What led up to the situation?
Install system using normal full disk encryption LUKS+Ext4.
After install open gnome-disk-utility and change
encryption password. It gives some error dialog and
now you are royally screwed. It deleted the only
LUKS keyslot. Cannot add new keyslots because of that.
All data will be lost after reboot.
Here is output of luksdump:
udo cryptsetup luksDump /dev/sda5
LUKS header information
Version: 2
Epoch: 4
Metadata area: 16384 [bytes]
Keyslots area: 16744448 [bytes]
UUID: 3c16ad4c-294c-4547-bf3e-bb8864ba5ea3
Label: (no label)
Subsystem: (no subsystem)
Flags: (no flags)
Data segments:
0: crypt
offset: 16777216 [bytes]
length: (whole device)
cipher: aes-xts-plain64
sector: 512 [bytes]
Keyslots:
Tokens:
Digests:
0: pbkdf2
Hash: sha256
Iterations: 59904
Salt: XX XX XX XX XX ....
Digest: XX XX XX XX XX ...
----------------------------------------
I changed salt and digest. No Keyslots are present!!!
I tried this 2 times in a row with new install,
exactly same result.
-- System Information:
Debian Release: buster/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 5.0.8-xanmod5 (SMP w/2 CPU cores; PREEMPT)
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8),
LANGUAGE=ru_RU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages gnome-disk-utility depends on:
ii dconf-gsettings-backend [gsettings-backend] 0.30.1-2
ii libatk1.0-0 2.30.0-2
ii libc6 2.28-10
ii libcairo2 1.16.0-4
ii libcanberra-gtk3-0 0.30-7
ii libdvdread4 6.0.1-1
ii libgdk-pixbuf2.0-0 2.38.1+dfsg-1
ii libglib2.0-0 2.58.3-1
ii libgtk-3-0 3.24.5-1
ii liblzma5 5.2.4-1
ii libnotify4 0.7.7-4
ii libpango-1.0-0 1.42.4-6
ii libpangocairo-1.0-0 1.42.4-6
ii libpwquality1 1.4.0-3
ii libsecret-1-0 0.18.7-1
ii libsystemd0 241-3
ii libudisks2-0 2.8.1-4
ii udisks2 2.8.1-4
gnome-disk-utility recommends no packages.
gnome-disk-utility suggests no packages.
-- no debconf information
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