[Bug 1810235] Re: cryptsetup silently fails in live environment
Nathan
dundir at gmail.com
Mon Jan 21 20:14:25 UTC 2019
Possibly, if there is a way to ensure bcache only caches encrypted block
data and not the cleartext blocks.
There may be a way of setting the backing drive to work with a different
ordering but I'll need to run some tests and I'm not the most
knowledgeable in regards to bcache, its been a learning experience. I'll
play with it when I have some free time to see if I can make it work.
I'll post back here with the results.
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https://bugs.launchpad.net/bugs/1810235
Title:
cryptsetup silently fails in live environment
Status in bcache-tools package in Ubuntu:
New
Status in cryptsetup package in Ubuntu:
New
Bug description:
When attempting to acccess an existing (working) LUKS partition from
the LiveCD environment, cryptsetup fails silently. No exceptions are
thrown, no errors displayed. The LUKS device remains completely
inaccessible.
I've attached an strace with the following two commands, "cryptsetup
luksDump /dev/sda3", and "cryptsetup luksOpen /dev/sda3 crypted" as
there was nothing in the logs that clearly point to a problem other
than the expected result being missing.
lsb-release:
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"
#uname -a
Linux ubuntu 4.15.0-29-generic #31-Ubuntu SMP Tue Jul 17 15:39:52 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: cryptsetup 2:2.0.2-1ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18
Uname: Linux 4.15.0-29-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
CasperVersion: 1.394
Date: Wed Jan 2 03:56:27 2019
LiveMediaBuild: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=C.UTF-8
SHELL=/bin/bash
SourcePackage: cryptsetup
UpgradeStatus: No upgrade log present (probably fresh install)
cmdline: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
crypttab: # <target name> <source device> <key file> <options>
fstab:
overlay / overlay rw 0 0
tmpfs /tmp tmpfs nosuid,nodev 0 0
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