LXC volume attach problem

[Ripal Nathuji]

I ran into an issue using volumes with LXC. The problem was in trying to mount/access the volume inside of the instance after attaching. As an example, when I attach the volume the following command line gets run:

sudo echo > c 8:16 rwm /sys/fs/cgroup/devices/sysdefault/libvirt/lxc/instance-00000001/devices.allow

With that, the device does not show in devices.list, and I cannot use mknod inside the container to get to and mount the volume. As a work around I can run the following manually after the attach:

echo b 8:16 rwm | sudo tee -a /sys/fs/cgroup/devices/libvirt/lxc/instance-00000001/devices.allow

Then I see the device show up in devices.list, do a mknod in the container, mount, etc.

In terms of environment, this was observed using devstack on ubuntu 11.10 and 12.04.

[Thierry Carrez (ttx)]

Thanks for your input!
Would be great if you could confirm that the patch at: https://review.openstack.org/5389 fixes the issue for you.

[Ripal Nathuji (ripal-nathuji)]

Sure, I will give this a try later today and let you know my mileage.

Thanks!
Ripal
________________________________________
From: <email address hidden> [<email address hidden>] On Behalf Of Thierry Carrez [<email address hidden>]
Sent: Thursday, March 15, 2012 5:06 AM
To: Ripal Nathuji
Subject: [Bug 948193] Re: LXC volume attach problem

*** This bug is a duplicate of bug 943304 ***
    https://bugs.launchpad.net/bugs/943304

Thanks for your input!
Would be great if you could confirm that the patch at: https://review.openstack.org/5389 fixes the issue for you.

--
You received this bug notification because you are subscribed to the bug
report.
https://bugs.launchpad.net/bugs/948193

Title:
  LXC volume attach problem

Status in OpenStack Compute (Nova):
  New

Bug description:
  I ran into an issue using volumes with LXC. The problem was in trying
  to mount/access the volume inside of the instance after attaching. As
  an example, when I attach the volume the following command line gets
  run:

  sudo echo > c 8:16 rwm
  /sys/fs/cgroup/devices/sysdefault/libvirt/lxc/instance-00000001/devices.allow

  With that, the device does not show in devices.list, and I cannot use
  mknod inside the container to get to and mount the volume. As a work
  around I can run the following manually after the attach:

  echo b 8:16 rwm | sudo tee -a
  /sys/fs/cgroup/devices/libvirt/lxc/instance-00000001/devices.allow

  Then I see the device show up in devices.list, do a mknod in the
  container, mount, etc.

  In terms of environment, this was observed using devstack on ubuntu
  11.10 and 12.04.

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/948193/+subscriptions

[Ripal Nathuji (ripal-nathuji)]

Yep, it works now. Thanks!

________________________________________
From: Ripal Nathuji
Sent: Thursday, March 15, 2012 7:35 AM
To: Bug 948193
Subject: RE: [Bug 948193] Re: LXC volume attach problem

Sure, I will give this a try later today and let you know my mileage.

Thanks!
Ripal
________________________________________
From: <email address hidden> [<email address hidden>] On Behalf Of Thierry Carrez [<email address hidden>]
Sent: Thursday, March 15, 2012 5:06 AM
To: Ripal Nathuji
Subject: [Bug 948193] Re: LXC volume attach problem

*** This bug is a duplicate of bug 943304 ***
    https://bugs.launchpad.net/bugs/943304

Thanks for your input!
Would be great if you could confirm that the patch at: https://review.openstack.org/5389 fixes the issue for you.

--
You received this bug notification because you are subscribed to the bug
report.
https://bugs.launchpad.net/bugs/948193

Title:
  LXC volume attach problem

Status in OpenStack Compute (Nova):
  New

Bug description:
  I ran into an issue using volumes with LXC. The problem was in trying
  to mount/access the volume inside of the instance after attaching. As
  an example, when I attach the volume the following command line gets
  run:

  sudo echo > c 8:16 rwm
  /sys/fs/cgroup/devices/sysdefault/libvirt/lxc/instance-00000001/devices.allow

  With that, the device does not show in devices.list, and I cannot use
  mknod inside the container to get to and mount the volume. As a work
  around I can run the following manually after the attach:

  echo b 8:16 rwm | sudo tee -a
  /sys/fs/cgroup/devices/libvirt/lxc/instance-00000001/devices.allow

  Then I see the device show up in devices.list, do a mknod in the
  container, mount, etc.

  In terms of environment, this was observed using devstack on ubuntu
  11.10 and 12.04.

To manage notifications about this bug go to:
https://bugs.launchpad.net/nova/+bug/948193/+subscriptions