FW: [Planetlab-devel] RE: pl/xen

[David Becker]

Yes it is builtin.  If it were a module, it would have to exist in the
initrd file.


On Wed, Nov 08, 2006 at 11:04:01AM -0500, Marc E. Fiuczynski wrote:
" Hi David,
" 
" Good question.  It appears that the device mapper is compiled as a module.
" Is it compiled as a built-in in your kernel?
" 
" Marc
" 
" -----Original Message-----
" From: David Becker [mailto:becker at cs.duke.edu]
" Sent: Wednesday, November 08, 2006 10:33 AM
" To: Marc E. Fiuczynski
" Subject: Re: [Planetlab-devel] RE: pl/xen
" 
" 
" 
" Hi Marc,
" 
" 
" I tried your kernel and it failed to boot because of a device mapper
" issue.  Did you include the device mapper in your kernel?  Does your
" kernel expect a different initrd than what the bootmanager gets from PLC?
" 
" 	Linux version 2.6.17-1.2187_FC5.0.planetlab.2006.11.07xenU
" (support at planet-lab.org) (gcc version 3.3.3 20040412 (Red Hat Linux
" 3.3.3-7)) #1 SMP Tue Nov 7 02:18:09 EST 2006
" 	Creating block devices
" 	Making device-mapper control node
" 	Unable to find device-mapper major/minor
" 	Scanning logical volumes
" 	  Reading all physical volumes.  This may take a while...
" 	  Found volume group "planetlab" using metadata type lvm2
" 	Activating logical volumes
" 	  /dev/mapper/control: open failed: No such file or directory
" 	  Is device-mapper driver missing from kernel?
" 	  0 logical volume(s) in volume group "planetlab" now active
" 	Making device nodes
" 	  /dev/mapper/control: open failed: No such file or directory
" 	  Is device-mapper driver missing from kernel?
" 	ERROR: /bin/lvm exited abnormally!
" 
" 
" When I substitute my kernel and using the initrd the bootmanager got
" from PLC, the devmapper works fine:
" 	Creating block devices
" 	Making device-mapper control node
" 	Scanning logical volumes
" 	  Reading all physical volumes.  This may take a while...
" 	  Found volume group "planetlab" using metadata type lvm2
" 	Activating logical volumes
" 	  3 logical volume(s) in volume group "planetlab" now active
" 	Making device nodes
" 	Mounting root filesystem
" 
" 
" David