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Re: [Xen-devel] Unable to install Precise domU PV on xen 4.2.0



Am 02.10.2012 11:42, schrieb Fabio Fantoni:
Dom0 is wheezy 64 bit, kernel 3.2.23-1 from debian repository, xen 4.2.0 compiled from source

When I try to install Precise domU PV with this xl configuration file:
--------------------------------------------
PRECISE.cfg
----------------
name='PRECISE'
memory=1024
vcpus=2
disk=['/mnt/vm/disks/PRECISE.disk1.xm,raw,xvda1,rw', '/mnt/vm/disks/PRECISE.disk2.xm,raw,xvda2,rw']
#disk=['/mnt/vm/disks/PRECISE.disk1.xm,raw,xvda,rw']
vif=['bridge=xenbr0']
vfb=['vnc=1,vncunused=1,vnclisten=0.0.0.0,keymap=it']
xen_platform_pci=1
#bootloader='pygrub'
#kernel = "/usr/lib/xen/boot/pv-grub-x86_64.gz"
#extra = "(hd0,0)/grub/grub.cfg"
# Only for installation
kernel="/boot/domu/precise/vmlinuz"
ramdisk="/boot/domu/precise/initrd.gz"
extra = "debian-installer/exit/always_halt=true -- quiet console=hvc0"
--------------------------------------------

The vmlinux and initrd take from here:
http://archive.ubuntu.com/ubuntu/dists/precise-updates/main/installer-amd64/current/images/netboot/xen/

xl create /etc/xen/PRECISE.cfg
Parsing config from /etc/xen/PRECISE.cfg
libxl: error: libxl_device.c:858:device_backend_callback: unable to disconnect device with path /local/domain/0/backend/vbd/2/51713
libxl: error: libxl_device.c:858:device_backend_callback: unable to disconnect device with path /local/domain/0/backend/vbd/2/51714
libxl: error: libxl_create.c:933:domcreate_launch_dm: unable to add disk devices
libxl: error: libxl_device.c:858:device_backend_callback: unable to disconnect device with path /local/domain/0/backend/vbd/2/51713
libxl: error: libxl_blktap2.c:73:libxl__device_destroy_tapdisk: Unable to find type aio disk /mnt/vm/disks/PRECISE.disk1.xm: No such file or directory
libxl: error: libxl_device.c:858:device_backend_callback: unable to disconnect device with path /local/domain/0/backend/vbd/2/51714
libxl: error: libxl.c:1465:devices_destroy_cb: libxl__devices_destroy failed for 2

/mnt/vm/disks/PRECISE.disk1.xm exist, domU hvm with raw disks works

Is xen bug, kernel bug or my error?
Thanks for any reply



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Hello,

I think that the raw parameter isn't needed and is the reason for the device connecting error. Another way to install the guest would be to use debootstrap. This definitly works.

Best Regards
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