Discussion:
[Bug 1497420] [NEW] systemd 226-2 (debian sid) breaks lxc-attach
(too old to reply)
Chris West
2015-09-18 19:23:44 UTC
Permalink
Public bug reported:

Once systemd 226 is installed in an unprivileged Debian Sid container,
lxc-attach no-longer functions:

% lxc-attach -n siddy
lxc-attach: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request
lxc-attach: cgmanager.c: cgm_attach: 1460 Failed to enter group /user.slice/user-1000.slice/session-1.scope/lxc/siddy/init.scope
lxc-attach: attach.c: lxc_attach: 909 error communicating with child process

% journalctl -u cgmanager | tail -n 1
Sep 18 20:20:44 astoria cgmanager[1169]: cgmanager:per_ctrl_move_pid_main: pid 21918 (uid 1000 gid 1000) may not write to /run/cgmanager/fs/none,name=systemd//user.slice/user-1000.slice/session-1.scope/lxc/siddy/init.scope/tasks


Full walkthrough:

% lxc-create -n siddy -t download -- -d debian -r sid -a amd64
Using image from local cache
Unpacking the rootfs
...

% lxc-start -n siddy
% lxc-attach -n siddy

***@siddy:/# apt-get update
Get:1 http://http.debian.net sid InRelease [253 kB]
...
Get:7 http://http.debian.net sid/non-free amd64 Packages [91.3 kB]
Fetched 13.2 MB in 3s (3789 kB/s)
Reading package lists... Done


***@siddy:/# apt-get install systemd
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
libsystemd0
Suggested packages:
systemd-ui systemd-container
Recommended packages:
libpam-systemd dbus
The following packages will be upgraded:
libsystemd0 systemd
2 upgraded, 0 newly installed, 0 to remove and 47 not upgraded.
Need to get 3668 kB of archives.
After this operation, 1100 kB disk space will be freed.
Do you want to continue? [Y/n]
Get:1 http://http.debian.net/debian/ sid/main libsystemd0 amd64 226-2 [242 kB]
Get:2 http://http.debian.net/debian/ sid/main systemd amd64 226-2 [3426 kB]
...
Setting up systemd (226-2) ...
Installing new version of config file /etc/X11/xinit/xinitrc.d/50-systemd-user.sh ...
Installing new version of config file /etc/dbus-1/system.d/org.freedesktop.login1.conf ...
addgroup: The group `systemd-journal' already exists as a system group. Exiting.
Failed to set capabilities on file `/usr/bin/systemd-detect-virt' (Invalid argument)
The value of the capability argument is not permitted for a file. Or the file is not a regular (non-symlink) file
Failed to execute operation: File exists
Removing obsolete conffile /etc/dbus-1/system.d/org.freedesktop.machine1.conf ...

***@siddy:/# exit

% lxc-attach -n siddy
lxc-attach: cgmanager.c: lxc_cgmanager_enter: 698 call to cgmanager_move_pid_abs_sync failed: invalid request
lxc-attach: cgmanager.c: cgm_attach: 1460 Failed to enter group /user.slice/user-1000.slice/session-1.scope/lxc/siddy/init.scope
lxc-attach: attach.c: lxc_attach: 909 error communicating with child process

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: lxc 1.1.3-0ubuntu1 [modified: usr/lib/x86_64-linux-gnu/lxc/lxc-net]
ProcVersionSignature: Ubuntu 4.2.0-10.11-generic 4.2.0
Uname: Linux 4.2.0-10-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.18.1-0ubuntu1
Architecture: amd64
Date: Fri Sep 18 20:19:58 2015
SourcePackage: lxc
UpgradeStatus: Upgraded to wily on 2015-08-28 (20 days ago)
defaults.conf:
lxc.network.type = veth
lxc.network.link = lxcbr0
lxc.network.flags = up
lxc.network.hwaddr = 00:16:3e:xx:xx:xx

** Affects: lxc (Ubuntu)
Importance: Undecided
Status: New


** Tags: amd64 apparmor apport-bug wily
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Serge Hallyn
2015-09-21 15:20:28 UTC
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** Also affects: systemd (Ubuntu)
Importance: Undecided
Status: New

** Bug watch added: Debian Bug tracker #798778
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=798778

** Also affects: systemd (Debian) via
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=798778
Importance: Unknown
Status: Unknown
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Bug Watch Updater
2015-09-21 16:36:49 UTC
Permalink
** Changed in: systemd (Debian)
Status: Unknown => New
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Martin Pitt
2015-10-13 11:21:14 UTC
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** Summary changed:

- systemd 226-2 (debian sid) breaks lxc-attach
+ systemd 226 (moving pid 1 into /init.scope cgroup) breaks lxc-attach

** Package changed: systemd (Ubuntu) => lxcfs (Ubuntu)
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Serge Hallyn
2015-10-13 13:58:44 UTC
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Hi,

I'm hoping to fix this with a cgmanager patch to tasks to escape
'init.scope'. I don't want the list of escapable cgroups to keep
growing, so we'll need to come up with something better long-term.
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Serge Hallyn
2015-10-15 13:57:07 UTC
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** Also affects: cgmanager (Ubuntu)
Importance: Undecided
Status: New

** Changed in: cgmanager (Ubuntu)
Status: New => In Progress

** Changed in: lxc (Ubuntu)
Status: New => Invalid

** Changed in: lxcfs (Ubuntu)
Status: New => In Progress

** Changed in: cgmanager (Ubuntu)
Importance: Undecided => High

** Changed in: lxcfs (Ubuntu)
Importance: Undecided => High
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Launchpad Bug Tracker
2015-10-15 14:47:43 UTC
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** Branch linked: lp:ubuntu/wily-proposed/lxcfs

** Branch linked: lp:ubuntu/wily-proposed/cgmanager
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Launchpad Bug Tracker
2015-10-15 15:25:09 UTC
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This bug was fixed in the package lxcfs - 0.10-0ubuntu2

---------------
lxcfs (0.10-0ubuntu2) wily; urgency=medium

* Allow systemd to escape its custom cgroup. (LP: #1497420)

-- Serge Hallyn <***@ubuntu.com> Thu, 15 Oct 2015 08:56:13
-0500

** Changed in: lxcfs (Ubuntu)
Status: In Progress => Fix Released
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Serge Hallyn
2015-10-15 16:35:59 UTC
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lxc-attach still needs a fix to do the same thing - ignore a trailing
/init.scope in the init pid's cgroup.

** Changed in: lxc (Ubuntu)
Status: Invalid => Triaged

** Changed in: lxc (Ubuntu)
Importance: Undecided => High
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Launchpad Bug Tracker
2015-10-15 17:51:35 UTC
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This bug was fixed in the package cgmanager - 0.39-2ubuntu2

---------------
cgmanager (0.39-2ubuntu2) wily; urgency=medium

* Allow systemd to escape its custom cgroup. (LP: #1497420)

-- Serge Hallyn <***@ubuntu.com> Thu, 15 Oct 2015 09:00:25
-0500

** Changed in: cgmanager (Ubuntu)
Status: In Progress => Fix Released
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Launchpad Bug Tracker
2015-10-15 18:07:15 UTC
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** Branch linked: lp:ubuntu/cgmanager
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Martin Pitt
2015-10-16 07:04:02 UTC
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** Package changed: systemd (Debian) => docker (Debian)
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Bug Watch Updater
2015-10-17 02:09:27 UTC
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** Changed in: docker (Debian)
Status: New => Confirmed
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Timo Jyrinki
2015-11-03 09:27:15 UTC
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This affects running xenial Ubuntu now from 14.04 LTS.

Package versions:
cgmanager 0.39-2ubuntu2~ubuntu14.04.1~ppa1
liblxc1 1.1.4-0ubuntu1.1~ubuntu14.04.1
lxc 1.1.4-0ubuntu1.1~ubuntu14.04.1
lxcfs 0.11-0ubuntu3~ubuntu14.04.1
python3-lxc 1.1.4-0ubuntu1.1~ubuntu14.04.1
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Serge Hallyn
2015-11-03 15:23:45 UTC
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Yup, we need

https://github.com/lxc/lxc/commit/f348e47c93568b4f0c371cf5df1c98d4e816a86c

in the packages.
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Bug Watch Updater
2015-11-04 12:04:52 UTC
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** Changed in: docker (Debian)
Status: Confirmed => Fix Released
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Martin Pitt
2015-11-08 10:11:15 UTC
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FTR, I tried the above lxc patch locally, and it does not resolve the
reboot bug in a xenial container. I. e. "sudo reboot" in such a
container still fails during very early boot due to a cgroup setup
error.
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Martin Pitt
2015-11-09 07:43:06 UTC
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Specifically, the output is

Rebooting.
systemd 227 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID -ELFUTILS +KMOD -IDN)
Detected virtualization lxc.
Detected architecture x86-64.

Welcome to Ubuntu 16.04!

Set hostname to <adt-xenial.new>.
Failed to install release agent, ignoring: No such file or directory
Failed to create /lxc/adt-xenial/init.scope control group: No such file or directory
Failed to allocate manager object: No such file or directory
[!!!!!!] Failed to allocate manager object, freezing.
Freezing execution.


During that time, I get the following errors:

Nov 09 08:42:31 donald cgmanager[864]: cgmanager: Invalid path /run/cgmanager/fs/none,name=systemd///lxc/adt-xenial/init.scope (No such file or directory)
Nov 09 08:42:31 donald cgmanager[864]: cgmanager:list_children_main: Could not determine the requested cgroup (name=systemd:lxc/adt-xenial/init.scope)
Nov 09 08:42:31 donald cgmanager[864]: cgmanager: Invalid path /run/cgmanager/fs/none,name=systemd///lxc/adt-xenial/init.scope (No such file or directory)
Nov 09 08:42:31 donald cgmanager[864]: cgmanager:list_keys_main: Could not determine the requested cgroup (name=systemd:lxc/adt-xenial/init.scope)
Nov 09 08:42:31 donald lxcfs[882]: ** (process:882): WARNING **: cgmanager method call org.linuxcontainers.cgmanager0_0.ListChildren failed: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: invalid request. Use G_DBUS_DEBUG=message for more info.
Nov 09 08:42:31 donald lxcfs[882]: ** (process:882): WARNING **: cgmanager method call org.linuxcontainers.cgmanager0_0.ListKeys failed: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: invalid request. Use G_DBUS_DEBUG=message for more info.
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Serge Hallyn
2015-11-09 15:32:45 UTC
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Hi Martin,

thanks for that info. During a reboot, lxc deletes the container's
cgroup, then recreates it. Is systemd expecting the cgroup it
previously created to stick around?
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Stéphane Graber
2015-11-09 17:26:34 UTC
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** Changed in: lxc (Ubuntu)
Status: Triaged => In Progress
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Launchpad Bug Tracker
2015-11-09 21:30:27 UTC
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This bug was fixed in the package lxc - 1.1.5-0ubuntu1

---------------
lxc (1.1.5-0ubuntu1) xenial; urgency=medium

* New upstream bugfix release (1.1.5)
(LP: #1514558, LP: #1497420, LP: #1466458, LP: #1510619)
* Drop proxy detection from the autopkgtest exercise script.

-- Stéphane Graber <***@ubuntu.com> Mon, 09 Nov 2015 14:22:16
-0500

** Changed in: lxc (Ubuntu)
Status: In Progress => Fix Released
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Martin Pitt
2015-11-10 05:36:01 UTC
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That did not fix reboot yet. I filed bug 1514690 as it's a different
root cause apparenlty.

@Serge: there's nothing that should "stick around", it's a reboot after
all and everything including pid 1 gets restarted. It just seems that
the second boot can't create the init.scope cgroup as the "outside" host
still has some state from the first boot?
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Martin Pitt
2015-11-16 06:30:12 UTC
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** Tags removed: verification-needed
** Tags added: verification-done
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Chris West
2015-11-15 11:36:23 UTC
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Yep, fixed.

With wily-proposed enabled,

# apt-get install lxc

installs:
2015-11-15 11:29:28 status installed liblxc1:amd64 1.1.5-0ubuntu0.15.10.2
2015-11-15 11:29:29 status installed python3-lxc:amd64 1.1.5-0ubuntu0.15.10.2
2015-11-15 11:29:30 status installed lxc:amd64 1.1.5-0ubuntu0.15.10.2

... and, immediately, lxc works as I expected.

I can confirm reboot is still broken, as per bug 1514690 , but this
doesn't matter for my usecase, so woo, thanks.
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Chris J Arges
2015-11-13 19:41:35 UTC
Permalink
Hello Chris, or anyone else affected,

Accepted lxc into vivid-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/lxc/1.1.5-0ubuntu0.15.04.2 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package. See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed. Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed. In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in
advance!

** Also affects: lxc (Ubuntu Vivid)
Importance: Undecided
Status: New

** Also affects: cgmanager (Ubuntu Vivid)
Importance: Undecided
Status: New

** Also affects: lxcfs (Ubuntu Vivid)
Importance: Undecided
Status: New

** Changed in: lxc (Ubuntu Vivid)
Status: New => Fix Committed

** Tags added: verification-needed

** Also affects: lxc (Ubuntu Wily)
Importance: Undecided
Status: New

** Also affects: cgmanager (Ubuntu Wily)
Importance: Undecided
Status: New

** Also affects: lxcfs (Ubuntu Wily)
Importance: Undecided
Status: New

** Changed in: lxc (Ubuntu Wily)
Status: New => Fix Committed
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Chris J Arges
2015-11-13 19:45:43 UTC
Permalink
Hello Chris, or anyone else affected,

Accepted lxc into wily-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/lxc/1.1.5-0ubuntu0.15.10.2 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package. See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed. Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed. In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in
advance!
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Title:
systemd 226 (moving pid 1 into /init.scope cgroup) breaks lxc-attach

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Chris J Arges
2015-11-18 18:57:17 UTC
Permalink
Hello Chris, or anyone else affected,

Accepted lxc into wily-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/lxc/1.1.5-0ubuntu0.15.10.3 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package. See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed. Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed. In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in
advance!

** Tags removed: verification-done

** Tags added: verification-needed
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Title:
systemd 226 (moving pid 1 into /init.scope cgroup) breaks lxc-attach

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Chris J Arges
2015-11-18 19:00:14 UTC
Permalink
Hello Chris, or anyone else affected,

Accepted lxc into vivid-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/lxc/1.1.5-0ubuntu0.15.04.3 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package. See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to
enable and use -proposed. Your feedback will aid us getting this update
out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed. In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in
advance!
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Title:
systemd 226 (moving pid 1 into /init.scope cgroup) breaks lxc-attach

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Stéphane Graber
2015-11-25 21:56:51 UTC
Permalink
** Tags removed: verification-needed
** Tags added: verification-done
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Title:
systemd 226 (moving pid 1 into /init.scope cgroup) breaks lxc-attach

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Launchpad Bug Tracker
2015-11-30 17:23:32 UTC
Permalink
This bug was fixed in the package lxc - 1.1.5-0ubuntu0.15.04.3

---------------
lxc (1.1.5-0ubuntu0.15.04.3) vivid-proposed; urgency=medium

* Cherry-pick from upstream:
- Fix preserve_ns to work on < 3.8 kernels. (LP: #1516971)
- Fix process title rewrite to not mangle the environment. (LP: #1517107)

lxc (1.1.5-0ubuntu0.15.04.2) vivid-proposed; urgency=medium

* Cherry-pick from upstream:
- Fix ubuntu-cloud template to detect compression algorithm instead
of hardcoding xz. Also update list of supported releases and use trusty
as the fallback release. (LP: #1515463)
* Update lxc-tests description to make it clear that this package is
meant to be used by developers and by automated testing.

lxc (1.1.5-0ubuntu0.15.04.1) vivid-proposed; urgency=medium

* New upstream bugfix release (MRE) (1.1.5)
(LP: #1497420, LP: #1436723, LP: #1441068, LP: #1504496,
LP: #1466458, LP: #1510619)
* Drop proxy detection from the autopkgtest exercise script.

-- Stéphane Graber <***@ubuntu.com> Wed, 18 Nov 2015 13:41:23
-0500

** Changed in: lxc (Ubuntu Vivid)
Status: Fix Committed => Fix Released

** Changed in: lxc (Ubuntu Wily)
Status: Fix Committed => Fix Released
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Title:
systemd 226 (moving pid 1 into /init.scope cgroup) breaks lxc-attach

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h
Launchpad Bug Tracker
2015-11-30 17:23:39 UTC
Permalink
This bug was fixed in the package lxc - 1.1.5-0ubuntu0.15.10.3

---------------
lxc (1.1.5-0ubuntu0.15.10.3) wily-proposed; urgency=medium

* Cherry-pick from upstream:
- Fix preserve_ns to work on < 3.8 kernels. (LP: #1516971)
- Fix process title rewrite to not mangle the environment. (LP: #1517107)

lxc (1.1.5-0ubuntu0.15.10.2) wily-proposed; urgency=medium

* Cherry-pick from upstream:
- Fix ubuntu-cloud template to detect compression algorithm instead
of hardcoding xz. Also update list of supported releases and use trusty
as the fallback release. (LP: #1515463)
* Update lxc-tests description to make it clear that this package is
meant to be used by developers and by automated testing.

lxc (1.1.5-0ubuntu0.15.10.1) wily-proposed; urgency=medium

* New upstream bugfix release (MRE) (1.1.5)
(LP: #1497420, LP: #1441068, LP: #1466458, LP: #1510619)
* Drop proxy detection from the autopkgtest exercise script.

-- Stéphane Graber <***@ubuntu.com> Wed, 18 Nov 2015 13:40:28
-0500
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Title:
systemd 226 (moving pid 1 into /init.scope cgroup) breaks lxc-attach

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Stéphane Graber
2015-11-30 17:24:13 UTC
Permalink
The verification of the Stable Release Update for lxc has completed
successfully and the package has now been released to -updates.
Subsequently, the Ubuntu Stable Release Updates Team is being
unsubscribed and will not receive messages about this bug report. In
the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.
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Title:
systemd 226 (moving pid 1 into /init.scope cgroup) breaks lxc-attach

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Stéphane Graber
2015-11-30 17:24:14 UTC
Permalink
The verification of the Stable Release Update for lxc has completed
successfully and the package has now been released to -updates.
Subsequently, the Ubuntu Stable Release Updates Team is being
unsubscribed and will not receive messages about this bug report. In
the event that you encounter a regression using the package from
-updates please report a new bug using ubuntu-bug and tag the bug report
regression-update so we can easily find any regressions.
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Title:
systemd 226 (moving pid 1 into /init.scope cgroup) breaks lxc-attach

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