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Linux Container (LXC) image without vmlinux

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Recently, I installed lxc and created an Ubuntu LXC image.

Then, I did ls -a / to see the directory listing of / inside the image.

To my surprise, there is no vmlinux or vmlinuz often seen in normal Linux distros.

My question, therefore, is: How can a LXC image be booted up without a vmlinux/z?

boot lxc syslinux

share|improve this question

edited Apr 16 at 9:37

Mr Shunz

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asked Apr 16 at 8:03

user1010573user1010573

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add a comment
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0

Recently, I installed lxc and created an Ubuntu LXC image.

Then, I did ls -a / to see the directory listing of / inside the image.

To my surprise, there is no vmlinux or vmlinuz often seen in normal Linux distros.

My question, therefore, is: How can a LXC image be booted up without a vmlinux/z?

boot lxc syslinux

share|improve this question

edited Apr 16 at 9:37

Mr Shunz

2,66744 gold badges2222 silver badges2424 bronze badges

asked Apr 16 at 8:03

user1010573user1010573

322 bronze badges

add a comment
 | 

Recently, I installed lxc and created an Ubuntu LXC image.

Then, I did ls -a / to see the directory listing of / inside the image.

To my surprise, there is no vmlinux or vmlinuz often seen in normal Linux distros.

My question, therefore, is: How can a LXC image be booted up without a vmlinux/z?

boot lxc syslinux

share|improve this question

edited Apr 16 at 9:37

Mr Shunz

2,66744 gold badges2222 silver badges2424 bronze badges

asked Apr 16 at 8:03

user1010573user1010573

322 bronze badges

share|improve this question

edited Apr 16 at 9:37

Mr Shunz

2,66744 gold badges2222 silver badges2424 bronze badges

asked Apr 16 at 8:03

user1010573user1010573

322 bronze badges

share|improve this question

edited Apr 16 at 9:37

Mr Shunz

2,66744 gold badges2222 silver badges2424 bronze badges

asked Apr 16 at 8:03

user1010573user1010573

322 bronze badges

edited Apr 16 at 9:37

Mr Shunz

2,66744 gold badges2222 silver badges2424 bronze badges

edited Apr 16 at 9:37

Mr Shunz

2,66744 gold badges2222 silver badges2424 bronze badges

asked Apr 16 at 8:03

user1010573user1010573

322 bronze badges

asked Apr 16 at 8:03

user1010573user1010573

322 bronze badges

2 Answers
2

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oldest

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2

LXC are a bit different than "traditional" virtual machines.

Rather than emulating hardware they all use the same kernel (i.e. the kernel from your host).

From the lxc introduction page:

LXC is a userspace interface for the Linux kernel containment features. Through a powerful API and simple tools, it lets Linux users easily create and manage system or application containers.

and more specifically (emphasis mine):

LXC containers are often considered as something in the middle between a chroot and a full fledged virtual machine. The goal of LXC is to create an environment as close as possible to a standard Linux installation but without the need for a separate kernel.

share|improve this answer

edited Apr 16 at 9:50

answered Apr 16 at 9:16

Mr ShunzMr Shunz

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 | 

1

Containers are processes that run "in a bubble" with their own filesystem and network (among other things). They are not VMs. They use the kernel of their host (which is why they are much faster to start than a VM).

share|improve this answer

answered Apr 16 at 9:54

xenoidxenoid

2,59511 gold badge66 silver badges1818 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is a very concise and exact answer. Thanks so much.
  
  – user1010573
  Apr 16 at 10:26
  

  
  
  
  

add a comment
 | 

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2

LXC are a bit different than "traditional" virtual machines.

Rather than emulating hardware they all use the same kernel (i.e. the kernel from your host).

From the lxc introduction page:

LXC is a userspace interface for the Linux kernel containment features. Through a powerful API and simple tools, it lets Linux users easily create and manage system or application containers.

and more specifically (emphasis mine):

LXC containers are often considered as something in the middle between a chroot and a full fledged virtual machine. The goal of LXC is to create an environment as close as possible to a standard Linux installation but without the need for a separate kernel.

share|improve this answer

edited Apr 16 at 9:50

answered Apr 16 at 9:16

Mr ShunzMr Shunz

2,66744 gold badges2222 silver badges2424 bronze badges

add a comment
 | 

2

LXC are a bit different than "traditional" virtual machines.

Rather than emulating hardware they all use the same kernel (i.e. the kernel from your host).

From the lxc introduction page:

LXC is a userspace interface for the Linux kernel containment features. Through a powerful API and simple tools, it lets Linux users easily create and manage system or application containers.

and more specifically (emphasis mine):

LXC containers are often considered as something in the middle between a chroot and a full fledged virtual machine. The goal of LXC is to create an environment as close as possible to a standard Linux installation but without the need for a separate kernel.

share|improve this answer

edited Apr 16 at 9:50

answered Apr 16 at 9:16

Mr ShunzMr Shunz

2,66744 gold badges2222 silver badges2424 bronze badges

add a comment
 | 

LXC are a bit different than "traditional" virtual machines.

Rather than emulating hardware they all use the same kernel (i.e. the kernel from your host).

From the lxc introduction page:

LXC is a userspace interface for the Linux kernel containment features. Through a powerful API and simple tools, it lets Linux users easily create and manage system or application containers.

and more specifically (emphasis mine):

LXC containers are often considered as something in the middle between a chroot and a full fledged virtual machine. The goal of LXC is to create an environment as close as possible to a standard Linux installation but without the need for a separate kernel.

share|improve this answer

edited Apr 16 at 9:50

answered Apr 16 at 9:16

Mr ShunzMr Shunz

2,66744 gold badges2222 silver badges2424 bronze badges

share|improve this answer

edited Apr 16 at 9:50

answered Apr 16 at 9:16

Mr ShunzMr Shunz

2,66744 gold badges2222 silver badges2424 bronze badges

answered Apr 16 at 9:16

Mr ShunzMr Shunz

2,66744 gold badges2222 silver badges2424 bronze badges

answered Apr 16 at 9:16

Mr ShunzMr Shunz

2,66744 gold badges2222 silver badges2424 bronze badges

1

Containers are processes that run "in a bubble" with their own filesystem and network (among other things). They are not VMs. They use the kernel of their host (which is why they are much faster to start than a VM).

share|improve this answer

answered Apr 16 at 9:54

xenoidxenoid

2,59511 gold badge66 silver badges1818 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is a very concise and exact answer. Thanks so much.
  
  – user1010573
  Apr 16 at 10:26
  

  
  
  
  

add a comment
 | 

1

Containers are processes that run "in a bubble" with their own filesystem and network (among other things). They are not VMs. They use the kernel of their host (which is why they are much faster to start than a VM).

share|improve this answer

answered Apr 16 at 9:54

xenoidxenoid

2,59511 gold badge66 silver badges1818 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  This is a very concise and exact answer. Thanks so much.
  
  – user1010573
  Apr 16 at 10:26
  

  
  
  
  

add a comment
 | 

Containers are processes that run "in a bubble" with their own filesystem and network (among other things). They are not VMs. They use the kernel of their host (which is why they are much faster to start than a VM).

share|improve this answer

answered Apr 16 at 9:54

xenoidxenoid

2,59511 gold badge66 silver badges1818 bronze badges

share|improve this answer

answered Apr 16 at 9:54

xenoidxenoid

2,59511 gold badge66 silver badges1818 bronze badges

answered Apr 16 at 9:54

xenoidxenoid

2,59511 gold badge66 silver badges1818 bronze badges

answered Apr 16 at 9:54

xenoidxenoid

2,59511 gold badge66 silver badges1818 bronze badges