[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

** Changed in: canonical-devices-system-image
   Status: In Progress => Fix Released

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Launchpad Bug Tracker]

This bug was fixed in the package lxc-android-config -
0.230+16.10.20160616-0ubuntu1

---
lxc-android-config (0.230+16.10.20160616-0ubuntu1) yakkety; urgency=medium

  [ Ondrej Kubik ]
  * Updating lxc-android-config to work with new lxc v2.0. This fixes
boot of devel-proposed (Xenial) channel (LP: #1551150)

 -- Łukasz Zemczak   Thu, 16 Jun 2016
13:38:18 +

** Changed in: lxc-android-config (Ubuntu)
   Status: In Progress => Fix Released

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[John McAleely]

** Changed in: lxc-android-config (Ubuntu)
 Assignee: (unassigned) => Ondrej Kubik (w-ondra)

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

I confirm that krillin and mako running ubuntu-touch/staging (xenial)
boot with lxc-android-config.conf provided by Stéphane. Thanks!

** Changed in: canonical-devices-system-image
   Status: Confirmed => In Progress

** Also affects: lxc-android-config (Ubuntu)
   Importance: Undecided
   Status: New

** Changed in: lxc-android-config (Ubuntu)
   Status: New => In Progress

** Changed in: lxc-android-config (Ubuntu)
   Importance: Undecided => Critical

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

Marking the LXC task as Invalid since there's nothing inherently wrong
in LXC.

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

** Attachment added: "lxc-android-config.conf"
   
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1551150/+attachment/4680725/+files/lxc-android-config.conf

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

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

So it's really unclear to me what's the actual problem, but I got a fix
for the situation that I've tested on a mako here.

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

Basically it looks like that "something" doesn't like the cgroups being
mounted on the phone. Immediately after udev starts, every process gets
a SIGKILL and the phone goes down.

We do need the cgroups filesystems to be mounted for LXC to be happy
though, but we don't need them visible after that (since cgmanager is
running anyway).

So my workaround is to tweak lxc-android-config.conf a bit, first to
make it start the container in the background which lets us get useful
debug output in the upstart log should it fail again, second, shuffle
the cgroup init code a bit in there (based on what I pasted in this bug
before) and then adding a bit of code which unmounts all the cgroup
filesystems right before emitting the android event.

New lxc-android-config.conf is attached. Tested on clean mako using
ubuntu-touch/devel-proposed channel.

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

Can this somehow be reproduced in a VM?

I don't have hardware (nor want any) and debugging over the bug tracker
doesn't seem to be working very well :)

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Łukasz Zemczak]

The lxc and lxc-android-config packages have been re-reverted with lxc
container once again failing to start - as per request. Would be good if
we could get this properly fixed.

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Pat McGowan]

** Changed in: canonical-devices-system-image
Milestone: backlog => xenial

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

On devel-proposed/mako r487 the device boots with:
- lxc reverted to 2.0.0~rc2-0ubuntu2
- lxc-android-config.conf from comment 21.

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Re: [Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Ondrej Kubik]

so I did use new script for LXC
Now I can see that Android init process is started but it fails quite soon,
with not much logs indicating actual issue.
This is just speculation, but probably still issue how /proc and /dev are
mounted to container?
Here are all the logs I get from Android init:

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.107370] init: cannot find
'/system/etc/install-recovery.sh', disabling 'flash_recovery'

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.107523] init: cannot find
'/system/bin/ubuntuappmanager.disabled', disabling 'ubuntuappmanager'

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.112345] binder: 1064:1064
transaction failed 29189, size 0-0

Jan  1 02:02:38 ubuntu-phablet dbus[862]: [system] Successfully activated
service 'org.freedesktop.login1'

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.190172] pil pil4: gss: Failed
to locate gss.mdt

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.214710] pil pil4: gss: Failed
to locate gss.mdt

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.220051] pil pil4: gss: Failed
to locate gss.mdt

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.231191] pil pil4: gss: Failed
to locate gss.mdt

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.243003] init: using
deprecated syntax for specifying property 'ro.serialno', use ${name} instead

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.243277] init: using
deprecated syntax for specifying property 'ro.product.manufacturer', use
${name} instead

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.243552] init: using
deprecated syntax for specifying property 'ro.product.model', use ${name}
instead

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.250572] usbcore: registered
new interface driver rmnet_usb

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.257042] rmnet usb ctrl
Initialized.

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.347413] init: property
'sys.powerctl' doesn't exist while expanding '${sys.powerctl}'

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.347627] init: powerctl:
cannot expand '${sys.powerctl}'

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.347840] init: property
'sys.sysctl.extra_free_kbytes' doesn't exist while expanding
'${sys.sysctl.extra_free_kbytes}'

Jan  1 02:02:38 ubuntu-phablet kernel: [   10.348023] init: cannot expand
'${sys.sysctl.extra_free_kbytes}' while writing to
'/proc/sys/vm/extra_free_kbytes'

On Fri, Apr 15, 2016 at 2:25 PM, Łukasz Zemczak <1551...@bugs.launchpad.net>
wrote:

> Can we get some traction on this? devel-proposed has been unbootable for
> too long. With xenial going into Final Freeze it would be nice to get
> this working around release-time. In touch we're not following the
> standard Ubuntu cycles, but it would be nice to have a bootable baseline
> when using xenial.
>
> --
> You received this bug notification because you are a bug assignee.
> https://bugs.launchpad.net/bugs/1551150
>
> Title:
>   devel-proposed - android lxc container fails to start
>
> Status in Canonical System Image:
>   Confirmed
> Status in lxc package in Ubuntu:
>   Confirmed
>
> Bug description:
>   Last known good image: ubuntu-touch/devel-proposed/ubuntu/mako 446
>
>   ubuntu-touch/devel-proposed/ubuntu/mako 447 (and higher) and
>   equivalent images on other devices do not boot and hang on the boot
>   logo.
>
>   From the list of changes, it could be lxc:
>   446: lxc 2.0.0~rc2-0ubuntu2
>   447: lxc 2.0.0~rc3-0ubuntu1
>
>   Latest image with 2.0.0~rc4-0ubuntu1 doesn't boot either.
>
>   lxc (2.0.0~rc3-0ubuntu1) xenial; urgency=medium
>
> * New upstream release (2.0.0~rc3)
>   - Make the cgfs backend and cgns work without cgmanager
>   - Manpage updates
>   - Mark lxc-clone and lxc-start-ephemeral deprecated (still included)
> * Set --enable-deprecated so we still ship lxc-clone and
> lxc-start-ephemeral
>
>   lxc (2.0.0~rc2-0ubuntu3) xenial; urgency=medium
>
> * Use versioned dependencies against the various binary packages.
> * Update lxc-templates to depend on lxc1 not lxc. (LP: #1549136)
> * Move the lxcfs recommends from lxc-templates to liblxc1.
> * Drop cgmanager, use the cgfs backend instead.
> * Have liblxc1 depend on systemd | cgroup-lite for cgfs backend.
>
>   Device tarballs between 446 and 447 are the same.
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/canonical-devices-system-image/+bug/1551150/+subscriptions
>

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Łukasz Zemczak]

Can we get some traction on this? devel-proposed has been unbootable for
too long. With xenial going into Final Freeze it would be nice to get
this working around release-time. In touch we're not following the
standard Ubuntu cycles, but it would be nice to have a bootable baseline
when using xenial.

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[TarotChen]

Still the latest arale-devel image-r303 is broken that fails to boot the
phone

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Launchpad Bug Tracker]

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

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

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Serge Hallyn]

Assuming this is running upstart (as it looks like), try adding the
debug and verbose flags as shown in the upstart cookbook?

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Serge Hallyn]

Assuming this is running upstart (as it looks like), try adding the
debug and verbose flags as shown in the upstart cookbook?

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Ondrej Kubik]

Finally some time to check more.
Using new  /etc/init/lxc-android-config.conf from Stephane 
http://paste.ubuntu.com/15264484/

When running manually $ lxc-start -n android -F -- /init
I can see init process be created, but then it exits. Also there are no logs in 
syslog or /proc/kmesg
So looks like init is super unhappy inside the container and does not do much.

But because it actually tries to run, following passes fine
lxc-wait -n android -s RUNNING -t 30
containerpid="$(lxc-info -n android -p -H)"
if [ -n "$containerpid" ]; then

and tries to continue with boot, while container actually fails to boot.
Is there way we can get more logs from running container, I tried this:
lxc-start -l 0 -n android -F -- /init
rm: cannot remove '/var/lib/lxc/android/rootfs/sbin/adbd': No such file or 
directory
run-parts: /var/lib/lxc/android/pre-start.d/10-no-adbd exited with return code 1
sed: can't read /var/lib/lxc/android/rootfs/init.manta.usb.rc: No such file or 
directory
cp: cannot stat '/var/lib/lxc/android/overrides/*': No such file or directory
mkfifo: cannot create fifo '/dev/socket/micshm': File exists

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Ondrej Kubik]

Finally some time to check more.
Using new  /etc/init/lxc-android-config.conf from Stephane 
http://paste.ubuntu.com/15264484/

When running manually $ lxc-start -n android -F -- /init
I can see init process be created, but then it exits. Also there are no logs in 
syslog or /proc/kmesg
So looks like init is super unhappy inside the container and does not do much.

But because it actually tries to run, following passes fine
lxc-wait -n android -s RUNNING -t 30
containerpid="$(lxc-info -n android -p -H)"
if [ -n "$containerpid" ]; then

and tries to continue with boot, while container actually fails to boot.
Is there way we can get more logs from running container, I tried this:
lxc-start -l 0 -n android -F -- /init
rm: cannot remove '/var/lib/lxc/android/rootfs/sbin/adbd': No such file or 
directory
run-parts: /var/lib/lxc/android/pre-start.d/10-no-adbd exited with return code 1
sed: can't read /var/lib/lxc/android/rootfs/init.manta.usb.rc: No such file or 
directory
cp: cannot stat '/var/lib/lxc/android/overrides/*': No such file or directory
mkfifo: cannot create fifo '/dev/socket/micshm': File exists

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[kevin gunn]

** Changed in: lxc (Ubuntu)
 Assignee: (unassigned) => Ondrej Kubik (w-ondra)

** Changed in: canonical-devices-system-image
 Assignee: Ondrej Kubik (w-ondra) => John McAleely (john.mcaleely)

** Changed in: lxc (Ubuntu)
   Importance: Undecided => Critical

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[John McAleely]

** Changed in: canonical-devices-system-image
Milestone: ww08-2016 => backlog

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[John McAleely]

** Changed in: canonical-devices-system-image
Milestone: ww08-2016 => backlog

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[kevin gunn]

** Changed in: lxc (Ubuntu)
 Assignee: (unassigned) => Ondrej Kubik (w-ondra)

** Changed in: canonical-devices-system-image
 Assignee: Ondrej Kubik (w-ondra) => John McAleely (john.mcaleely)

** Changed in: lxc (Ubuntu)
   Importance: Undecided => Critical

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

Update init script is: http://paste.ubuntu.com/15264484/

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

Update init script is: http://paste.ubuntu.com/15264484/

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

That part of the init script looks just plain wrong to me... I'm
guessing the intent was for /dev/cpuctl to be a bind-mount of
/sys/fs/cgroup but that's not at all what the code does.

I'll update my local copy here to replace that by a simple symlink from
/dev/cpuctl to /sys/fs/cgroup/cpu

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

That part of the init script looks just plain wrong to me... I'm
guessing the intent was for /dev/cpuctl to be a bind-mount of
/sys/fs/cgroup but that's not at all what the code does.

I'll update my local copy here to replace that by a simple symlink from
/dev/cpuctl to /sys/fs/cgroup/cpu

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Ondrej Kubik]

missing android signal was caused by double mounting of cgroup cpu,
which was already mounted. Fixing that did take boot further, now
lightdm becomes alive, still boot fails, and kills adb in the process...

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Ondrej Kubik]

missing android signal was caused by double mounting of cgroup cpu,
which was already mounted. Fixing that did take boot further, now
lightdm becomes alive, still boot fails, and kills adb in the process...

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

I have a debdiff ready to upload for the changes so far but will wait
until we figure out the rest of this issue.

Serge Hallyn is also working on a cgroup-lite changes to get us rid of
most of that diff too.

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

I have a debdiff ready to upload for the changes so far but will wait
until we figure out the rest of this issue.

Serge Hallyn is also working on a cgroup-lite changes to get us rid of
most of that diff too.

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Ondrej Kubik]

more debugging and android signal is still not emitted, though android init 
process is running
Will keep debugging to get closer to the issue
we are progressing

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Ondrej Kubik]

more debugging and android signal is still not emitted, though android init 
process is running
Will keep debugging to get closer to the issue
we are progressing

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Ondrej Kubik]

lxc-container is now running, system still does not boot, but container is no 
more issue
needed changes:
install 
https://launchpad.net/ubuntu/+source/cgroup-lite/1.10/+build/6001591/+files/cgroup-lite_1.10_all.deb
and modify /etc/init/lxc-android-config.conf to this:
http://paste.ubuntu.com/15261714/

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Ondrej Kubik]

lxc-container is now running, system still does not boot, but container is no 
more issue
needed changes:
install 
https://launchpad.net/ubuntu/+source/cgroup-lite/1.10/+build/6001591/+files/cgroup-lite_1.10_all.deb
and modify /etc/init/lxc-android-config.conf to this:
http://paste.ubuntu.com/15261714/

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Ondrej Kubik]

update from running system:
$  cat /proc/cgroups 
#subsys_namehierarchy   num_cgroups enabled
debug   3   1   1
cpu 1   1   1
cpuacct 2   1   1
freezer 4   1   1

$ cat /proc/self/cgroup 
5:name=systemd:/
4:freezer:/
3:debug:/
2:cpuacct:/
1:cpu:/

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Ondrej Kubik]

update from running system:
$  cat /proc/cgroups 
#subsys_namehierarchy   num_cgroups enabled
debug   3   1   1
cpu 1   1   1
cpuacct 2   1   1
freezer 4   1   1

$ cat /proc/self/cgroup 
5:name=systemd:/
4:freezer:/
3:debug:/
2:cpuacct:/
1:cpu:/

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

That is very weird, the cgroup-lite upstart job should result in your
case in 4 cgroup mounts, so I'm not sure why it's not happening here...

Could you run "bash -x /bin/cgroups-mount" as root and post its output
including a dump of /proc/self/mountinfo before and after running it?
that should help us figure out why exactly it didn't feel like mounting
those cgroups...

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

That is very weird, the cgroup-lite upstart job should result in your
case in 4 cgroup mounts, so I'm not sure why it's not happening here...

Could you run "bash -x /bin/cgroups-mount" as root and post its output
including a dump of /proc/self/mountinfo before and after running it?
that should help us figure out why exactly it didn't feel like mounting
those cgroups...

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

/proc/cgroups 
#subsys_namehierarchy   num_cgroups enabled
debug   0   1   1
cpu 0   1   1
cpuacct 0   1   1
freezer 0   1   1

/proc/self/cgroup is empty

There is no /var/log/upstart/cgroup-lite.log file and I verified that
the upstart job cgroup-lite starts.

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

And the content of fstab
/system/etc # cat fstab 
# override the forced fsck from /lib/init/fstab, we use a bindmount which 
confuses mountall
/dev/root   /   rootfs  defaults0   0

# swap file
/SWAP.swap  noneswapsw  0   0

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

/proc/cgroups 
#subsys_namehierarchy   num_cgroups enabled
debug   0   1   1
cpu 0   1   1
cpuacct 0   1   1
freezer 0   1   1

/proc/self/cgroup is empty

There is no /var/log/upstart/cgroup-lite.log file and I verified that
the upstart job cgroup-lite starts.

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

And the content of fstab
/system/etc # cat fstab 
# override the forced fsck from /lib/init/fstab, we use a bindmount which 
confuses mountall
/dev/root   /   rootfs  defaults0   0

# swap file
/SWAP.swap  noneswapsw  0   0

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

** Changed in: canonical-devices-system-image
 Assignee: (unassigned) => Ondrej Kubik (w-ondra)

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

** Changed in: canonical-devices-system-image
 Assignee: (unassigned) => Ondrej Kubik (w-ondra)

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

So far that does seem to confirm the hypothesis that since the phone has
systemd installed (but unused), this meets lxc's dependency on systemd |
cgroup-lite but as upstart is used to boot and upstart itself doesn't
mount the cgroup controllers, this results in a system without cgroups
mounted.

Having whatever package sets up the android container depend directly on
cgroup-lite would fix that dependency issue, though from the logs
provided so far, it looks like cgroup-lite is either not starting or is
failing.


I'm keeping the LXC task open for now, but there's so far been no indication of 
an actual bug in LXC or in its packaging, instead the phone seed is doing 
something that's not seen anywhere else (depend on systemd but not use it) 
which we can't do anything about from a packaging point of view. The rest of 
the issue appears to be some bad interaction between cgroup-lite and the init 
configuration on the Ubuntu phone.

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

So far that does seem to confirm the hypothesis that since the phone has
systemd installed (but unused), this meets lxc's dependency on systemd |
cgroup-lite but as upstart is used to boot and upstart itself doesn't
mount the cgroup controllers, this results in a system without cgroups
mounted.

Having whatever package sets up the android container depend directly on
cgroup-lite would fix that dependency issue, though from the logs
provided so far, it looks like cgroup-lite is either not starting or is
failing.


I'm keeping the LXC task open for now, but there's so far been no indication of 
an actual bug in LXC or in its packaging, instead the phone seed is doing 
something that's not seen anywhere else (depend on systemd but not use it) 
which we can't do anything about from a packaging point of view. The rest of 
the issue appears to be some bad interaction between cgroup-lite and the init 
configuration on the Ubuntu phone.

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

Some more information on cgroup-lite and where it may fail.

 - cgroup lite is triggered on "mounted MOUNTPOINT=/sys/fs/cgroup" => the path 
is shown as mountend above, so not it
 - The job then gets skipped if /bin/cgroups-mount doesn't exist => part of the 
cgroup-lite package, so not it
 - The job then gets skipped if /sys/fs/cgroup doesn't exist => was shown as 
mounted above, so not it
 - cgroup-lite exits if a cgroup entry is found in /etc/fstab
 - cgroup-lite exits if /proc/cgroups doesn't exist => all Ubuntu kernels have 
it, so not it

So the most likely reason I believe would be a "cgroup" entry of some
sort in /etc/fstab, the second most likely reason would be a failure for
the "mounted MOUNTPOINT=/sys/fs/cgroup" to be emitted by upstart
somehow.

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

That mountinfo shows no mounted cgroup controller, hinting that cgroup-
lite didn't start or otherwise failed to start.

Could you look for a /var/log/upstart/cgroup-lite.log file?

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

That mountinfo shows no mounted cgroup controller, hinting that cgroup-
lite didn't start or otherwise failed to start.

Could you look for a /var/log/upstart/cgroup-lite.log file?

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

Some more information on cgroup-lite and where it may fail.

 - cgroup lite is triggered on "mounted MOUNTPOINT=/sys/fs/cgroup" => the path 
is shown as mountend above, so not it
 - The job then gets skipped if /bin/cgroups-mount doesn't exist => part of the 
cgroup-lite package, so not it
 - The job then gets skipped if /sys/fs/cgroup doesn't exist => was shown as 
mounted above, so not it
 - cgroup-lite exits if a cgroup entry is found in /etc/fstab
 - cgroup-lite exits if /proc/cgroups doesn't exist => all Ubuntu kernels have 
it, so not it

So the most likely reason I believe would be a "cgroup" entry of some
sort in /etc/fstab, the second most likely reason would be a failure for
the "mounted MOUNTPOINT=/sys/fs/cgroup" to be emitted by upstart
somehow.

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Serge Hallyn]

Hi,

sorry, mountinfo does not show the hierarchies.  Can you show
/proc/cgroups  and /proc/self/cgroup output?

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Serge Hallyn]

Hi,

sorry, mountinfo does not show the hierarchies.  Can you show
/proc/cgroups  and /proc/self/cgroup output?

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

And syslog

** Attachment added: "syslog"
   
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1551150/+attachment/4584669/+files/syslog

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

android container log with cgroup-lite installed and content of
mountinfo from the same boot.

** Attachment added: "mountinfo.out"
   
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1551150/+attachment/4584668/+files/mountinfo.out

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Title:
  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

android container log with cgroup-lite installed and content of
mountinfo from the same boot.

** Attachment added: "mountinfo.out"
   
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1551150/+attachment/4584668/+files/mountinfo.out

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Title:
  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

And syslog

** Attachment added: "syslog"
   
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1551150/+attachment/4584669/+files/syslog

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

The phone uses upstart. I'll try to get the content of mountinfo

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

The phone uses upstart. I'll try to get the content of mountinfo

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

Do you know if the phone actually uses systemd as its init system
nowadays?

LXC requires either systemd or cgroup-lite to mount all the cgroup bits
properly, if systemd is installed but not used, that could explain what
you are seeing. Installing cgroup-lite should have fixed it though,
unless the container is started before cgroup-lite is done. That's not
possible with the regular lxc init script, but if the phone has
something custom, it could be possible.

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

We're gonna need a /proc/self/mountinfo output if we want to figure out
what the controller #7 is on your system...

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

Do you know if the phone actually uses systemd as its init system
nowadays?

LXC requires either systemd or cgroup-lite to mount all the cgroup bits
properly, if systemd is installed but not used, that could explain what
you are seeing. Installing cgroup-lite should have fixed it though,
unless the container is started before cgroup-lite is done. That's not
possible with the regular lxc init script, but if the phone has
something custom, it could be possible.

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Title:
  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

We're gonna need a /proc/self/mountinfo output if we want to figure out
what the controller #7 is on your system...

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Title:
  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

With cgroup-lite install the error message is different:
  lxc-start 20160229153538.890 ERRORlxc_cgfs - cgfs.c:cgfs_init:2300 - 
cgroupfs failed to detect cgroup metadata
  lxc-start 20160229153538.890 ERRORlxc_start - start.c:lxc_spawn:1026 
- failed initializing cgroup support
  lxc-start 20160229153538.891 ERRORlxc_start - 
start.c:__lxc_start:1276 - failed to spawn 'android'
  lxc-start 20160229153538.891 ERRORlxc_start_ui - lxc_start.c:main:344 
- The container failed to start.
  lxc-start 20160229153538.891 ERRORlxc_start_ui - lxc_start.c:main:348 
- Additional information can be obtained by setting the --logfile and 
--logpriority options.
  lxc-start 20160229160049.670 ERRORlxc_cgfs - 
cgfs.c:lxc_cgroupfs_create:874 - Could not find writable mount point for cgroup 
hierarchy 7 while trying to create cgroup.
  lxc-start 20160229160049.671 ERRORlxc_cgfs - cgfs.c:cgroup_rmdir:208 
- Device or resource busy - cgroup_rmdir: failed to delete 
/sys/fs/cgroup/freezer/
  lxc-start 20160229160049.672 ERRORlxc_cgfs - cgfs.c:cgroup_rmdir:208 
- Device or resource busy - cgroup_rmdir: failed to delete 
/sys/fs/cgroup/cpuacct/
  lxc-start 20160229160049.672 ERRORlxc_cgfs - cgfs.c:cgroup_rmdir:208 
- Device or resource busy - cgroup_rmdir: failed to delete /sys/fs/cgroup/cpu/
  lxc-start 20160229160049.672 ERRORlxc_cgfs - cgfs.c:cgroup_rmdir:208 
- Device or resource busy - cgroup_rmdir: failed to delete /sys/fs/cgroup/debug/
  lxc-start 20160229160049.672 ERRORlxc_start - start.c:lxc_spawn:1033 
- failed creating cgroups
  lxc-start 20160229160049.673 ERRORlxc_start - 
start.c:__lxc_start:1276 - failed to spawn 'android'
  lxc-start 20160229160049.673 ERRORlxc_start_ui - lxc_start.c:main:344 
- The container failed to start.
  lxc-start 20160229160049.673 ERRORlxc_start_ui - lxc_start.c:main:348 
- Additional information can be obtained by setting the --logfile and 
--logpriority options.

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Title:
  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

With cgroup-lite install the error message is different:
  lxc-start 20160229153538.890 ERRORlxc_cgfs - cgfs.c:cgfs_init:2300 - 
cgroupfs failed to detect cgroup metadata
  lxc-start 20160229153538.890 ERRORlxc_start - start.c:lxc_spawn:1026 
- failed initializing cgroup support
  lxc-start 20160229153538.891 ERRORlxc_start - 
start.c:__lxc_start:1276 - failed to spawn 'android'
  lxc-start 20160229153538.891 ERRORlxc_start_ui - lxc_start.c:main:344 
- The container failed to start.
  lxc-start 20160229153538.891 ERRORlxc_start_ui - lxc_start.c:main:348 
- Additional information can be obtained by setting the --logfile and 
--logpriority options.
  lxc-start 20160229160049.670 ERRORlxc_cgfs - 
cgfs.c:lxc_cgroupfs_create:874 - Could not find writable mount point for cgroup 
hierarchy 7 while trying to create cgroup.
  lxc-start 20160229160049.671 ERRORlxc_cgfs - cgfs.c:cgroup_rmdir:208 
- Device or resource busy - cgroup_rmdir: failed to delete 
/sys/fs/cgroup/freezer/
  lxc-start 20160229160049.672 ERRORlxc_cgfs - cgfs.c:cgroup_rmdir:208 
- Device or resource busy - cgroup_rmdir: failed to delete 
/sys/fs/cgroup/cpuacct/
  lxc-start 20160229160049.672 ERRORlxc_cgfs - cgfs.c:cgroup_rmdir:208 
- Device or resource busy - cgroup_rmdir: failed to delete /sys/fs/cgroup/cpu/
  lxc-start 20160229160049.672 ERRORlxc_cgfs - cgfs.c:cgroup_rmdir:208 
- Device or resource busy - cgroup_rmdir: failed to delete /sys/fs/cgroup/debug/
  lxc-start 20160229160049.672 ERRORlxc_start - start.c:lxc_spawn:1033 
- failed creating cgroups
  lxc-start 20160229160049.673 ERRORlxc_start - 
start.c:__lxc_start:1276 - failed to spawn 'android'
  lxc-start 20160229160049.673 ERRORlxc_start_ui - lxc_start.c:main:344 
- The container failed to start.
  lxc-start 20160229160049.673 ERRORlxc_start_ui - lxc_start.c:main:348 
- Additional information can be obtained by setting the --logfile and 
--logpriority options.

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Title:
  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

I installed cgroup-lite 1.10 but it still doesn't boot.

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

I installed cgroup-lite 1.10 but it still doesn't boot.

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

cgroup-lite is not installed:
un  cgroup-lite   
ii  systemd:armhf 229-1ubuntu4

I cannot paste the content of /proc/mounts because I only have adb in
recovery (the devices fails before adb starts otherwise)

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Jean-Baptiste Lallement]

cgroup-lite is not installed:
un  cgroup-lite   
ii  systemd:armhf 229-1ubuntu4

I cannot paste the content of /proc/mounts because I only have adb in
recovery (the devices fails before adb starts otherwise)

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

Can you paste the content of /proc/mounts on such a system and confirm that 
either one of those is true:
 - systemd is installed and used as init system
 - cgroup-lite is installed

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  devel-proposed - android lxc container fails to start

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[Bug 1551150] Re: devel-proposed - android lxc container fails to start

[Stéphane Graber]

Can you paste the content of /proc/mounts on such a system and confirm that 
either one of those is true:
 - systemd is installed and used as init system
 - cgroup-lite is installed

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  devel-proposed - android lxc container fails to start

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