[GRLUG] Xen folks?

[scott.tanner at comcast.net]

We run Xen3 on CentOS, and define the disks (logical volumes in our case) like your first example: 

disk = [ 'phy:/dev/mapper/VGL-qa01a.qa,xvda,w', 'phy:/dev/mapper/VGL-qa01a.qa--DB,xvdb,w' ] 


I wasn't familiar with the XML-based config files, and found a nice quick write-up on http://www.madmadmod.com/xen/8-xen-domu-configuration-files.html. The XML version is used with the libvirt toolkit, so I guess it depends on how you're starting the guests. 



Regards, 
Scott 



----- Original Message -----
From: "L. V. Lammert" <lvl at omnitec.net> 
To: "Grand Rapids LUG" <grlug at grlug.org> 
Sent: Thursday, July 19, 2012 4:40:34 PM 
Subject: [GRLUG] Xen folks? 

Trying to add a disk to a guest VM, .. however the config is confusing: 

In /etc/xen/vm/Mainserver 

disk=[ 'phy:/dev/sdb1,xvda:cdrom,r', 'file:/u/disk/Mainserver.raw,xvdb,w', 
] 

In /etc/xen/vm/Mainserver.xml 

</disk> 
<disk type='file' device='disk'> 
<driver name='file'/> 
<source file='/u/disk/Mainserver.raw'/> 
<target dev='xvdb'/> 
</disk> 

However, the physical PATH to the disks is: 

/u/VM/images/Mainserver 

The VM runs, .. so what is the reason for the discrepancy? I have created 
a new 250GB data drive to attach to the VM, but how should the path be 
specified? 

Lee 
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