Encrypted home directory randomly unmounts

[James Page]

I've noticed this a few times over the last month or so; my encrypted home directory will randomly unmount; I can mount it back straight away using the 'ecryptfs-mount-private' private and everything is accessible again.

Some things that are different about my install include the use of systemd as the init system instead of upstart.

I can't see anything in either the syslog or kern.log to give a clue as to why this happens.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ecryptfs-utils 104-0ubuntu1
ProcVersionSignature: Ubuntu 3.18.0-12.13-generic 3.18.4
Uname: Linux 3.18.0-12-generic x86_64
ApportVersion: 2.16-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Feb 10 11:12:42 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-11-25 (76 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141124)
SourcePackage: ecryptfs-utils
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastien Bacher (seb128)]

Do you use schroot? could be similar to bug #1430557

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Adrian Skar (cylonskar)]

This is happening to me now on Ubuntu 16.04 (Linux 4.4.0-24-generic (x86_64))

[Wojciech Ziniewicz (wojciech-ziniewicz)]

Same problem here. The output in dmesg:

[18185.463154] ecryptfs_encrypt_page: Error attempting to write lower page; rc = [-4]
[18185.463159] ecryptfs_writepage: Error encrypting page (upper index [0x0000000000000000])
[18473.552157] ecryptfs_encrypt_page: Error attempting to write lower page; rc = [-4]
[18473.552173] ecryptfs_writepage: Error encrypting page (upper index [0x0000000000000000])

Kernel version: Linux seriousbusiness 4.12.10-041210-generic #201708300614 SMP Wed Aug 30 10:16:40 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux