[Libvir] [PATCH] Linux-VServer support

Daniel Hokka Zakrisson daniel at hozac.com
Tue Jan 15 15:52:57 UTC 2008

Daniel P. Berrange wrote:
> On Wed, Jan 09, 2008 at 10:51:20PM +0100, Daniel Hokka Zakrisson wrote:
>> This patch implements support for Linux-VServer guests. It is currently
>> missing vcpu and console support, and the necessary virsh code to
>> support
>> it, but is otherwise pretty feature complete.
>> This is an XML dump from one of my guests:
>> <domain type='vserver' id='40010'>
>>   <name>lenny</name>
>>   <uuid>19e12957-261a-5a06-d6d0-89917d6d439f</uuid>
>>   <memory>2048000</memory>
>>   <os>
>>     <hostname>lenny.test</hostname>
>>     <type arch='i686'>vserver</type>
>>   </os>
>>   <devices>
>>     <interface type='ethernet'>
>>       <ip prefix='24' interface='dummy0' address='' />
>>     </interface>
> Minor nitpick - if dummy0 is the device associated with the
> container in the host's context, then it should be
>      <interface type='ethernet'>
>        <ip prefix='24' address='' />
>        <target dev="dummy0"/>
>      </interface>
>>     <interface type='ethernet'>
>>       <ip prefix='24' interface='dummy0' type='range'
>> address='' address2=''/>
>>     </interface>
>>     <disk type='directory' device='directory'>
>>       <source directory='/vservers/lenny' type='auto'
>> options='defaults'/>
>>       <target directory='/'/>
>>     </disk>
> I think I'd prefer to call these '<filesystem>' elements instead
> of '<disk>' because they don't really have the same functional
> properties as disks.

Overloading <disk> was done mostly to keep in line with the other
backends. I'd rather just add some logic to attach-disk than an entirely
separate attach-filesystem...

> Are the sources actual directories too ? Or are the sources block
> devs / files which are mounted inside ? The example paths suggest
> the former, but the presence of filesystem type info suggests the
> latter.

Either. That's what the <disk type='directory'> specifies, and the point
of the second example using type='block'. type='file' is also supported,
when used in conjuction with options='defaults,loop'.

> Dan.

Daniel Hokka Zakrisson

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