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Message #72898
[Bug 1447282] Re: Does not use encrypted swap when using GPT partitioning + encrypted home directory (ecryptfs)
Two ideas how to fix that:
* ecryptfs-setup-swap should change the partition type UUID to not be "swap" any more so that we don't try and auto-activate it. This is my preferred solution if it works.
* ecryptfs-setup-swap creates an override .swap unit which disables the auto-mounting. But as we would again have to refer to real device names, we lose the entire point of keeping the underlying unencrypted swap partition, i. e. so that we can refer to it by UUID.
** Package changed: systemd (Ubuntu Vivid) => ecryptfs-utils (Ubuntu
Vivid)
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https://bugs.launchpad.net/bugs/1447282
Title:
Does not use encrypted swap when using GPT partitioning + encrypted
home directory (ecryptfs)
Status in ecryptfs-utils package in Ubuntu:
In Progress
Status in ecryptfs-utils source package in Vivid:
In Progress
Bug description:
I'm still sorting out the details and eliminating variables, but as
far as I can tell:
Steps to reproduce
===============
1) Install Ubuntu using GPT partitioning for the OS drive[*]
2) Choose "require my password to login", and check "encrypt my home
directory"
Expected behavior
===============
No special user interaction should be required to initialized the
crytposwap other than normally logging in
Actual behavior
============
Prior to lightdm coming up, you will be prompted to enter your
passphrase to unlock the cryptoswap, similar to how you would be
prompted to unlock the OS drive when using full disk encryption (see
attached photo).
When lightdm comes up, you have to enter your password/passphrase
again to login.
Work-arounds
===========
1) This only seems to happen when using GTP partitioning, not MBR...
so use MBR if you can
2) Even with GTP partitioning, booting with init=/sbin/upstart seems
to reliably fix the problem, so it certainly seems systemd related
Notes
=====
* As far as I can tell, there isn't a way to force Ubiquity to create
a GPT partition table when the OS drive is < 2TB, but it will
automatically use GPT partitioning when the OS drive is >= 2TB. My
particular test was done using the System76 imaging server, which by
default uses GPT partitioning even when the OS drive is < 2TB.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: systemd 219-7ubuntu3
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Apr 22 11:40:29 2015
EcryptfsInUse: Yes
MachineType: System76, Inc. Kudu Professional
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic root=UUID=e6c5aea5-d57c-410d-abce-66e96175e946 ro quiet splash vt.handoff=7
SourcePackage: systemd
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/15/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.03.03RS76
dmi.board.asset.tag: Tag 12345
dmi.board.name: Kudu Professional
dmi.board.vendor: System76, Inc.
dmi.board.version: kudp1
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: System76, Inc.
dmi.chassis.version: kudp1
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.03.03RS76:bd01/15/2014:svnSystem76,Inc.:pnKuduProfessional:pvrkudp1:rvnSystem76,Inc.:rnKuduProfessional:rvrkudp1:cvnSystem76,Inc.:ct9:cvrkudp1:
dmi.product.name: Kudu Professional
dmi.product.version: kudp1
dmi.sys.vendor: System76, Inc.
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References