[lxc-users] Accessing /dev file system from container

[Anjali Kulkarni]

Sorry, there is a typo, it should be:
lxc.mount.entry=/mnt/huge /var/lib/lxc/$container_name/rootfs/mnt/huge none rw,bind 0 0

From: Admin <anjali at juniper.net<mailto:anjali at juniper.net>>
Date: Thursday, September 25, 2014 7:48 AM
To: LXC users mailing-list <lxc-users at lists.linuxcontainers.org<mailto:lxc-users at lists.linuxcontainers.org>>
Subject: Re: [lxc-users] Accessing /dev file system from container

You can export the uio device to the container in its config file using its device major and minor number, such as:

lxc.cgroup.devices.allow = c 247:0 rwm
lxc.mount.entry = /dev/uio0 dev/uio0 none bind,create=file

Where, you get the 247:0 from the output of
ls -l /dev/uio0

If you are trying to run DPDK app inside the container, you will also need to do the following to get the huge pages working:

mkdir -p /var/lib/lxc/$container_name/rootfs/mnt/huge

lxc.mount.entry=/mnt/huge /var/lib/lxc/test/rootfs/mnt/huge none rw,bind 0 0

Anjali

From: <Murthy>, Krishna J <krishna.j.murthy at intel.com<mailto:krishna.j.murthy at intel.com>>
Reply-To: LXC users mailing-list <lxc-users at lists.linuxcontainers.org<mailto:lxc-users at lists.linuxcontainers.org>>
Date: Thursday, September 25, 2014 6:04 AM
To: LXC users mailing-list <lxc-users at lists.linuxcontainers.org<mailto:lxc-users at lists.linuxcontainers.org>>
Subject: [lxc-users] Accessing /dev file system from container

I have a Ethernet device which is attached to the container. I have installed the driver module for this device on the host. When I run the application on the container it complains it is unable to find the device in the /dev file system. Infact I use UIO based driver. So in container I get message unable to access /dev/uio0: No such file or directory.

Regards,
Krishna




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