[Xen-users] XENBUS timeout connecting to device (Hard disks not detected)

["Philippe-A. Lemelin" <philippe.lemelin@xxxxxxxxxxxx>]

Good Morning List,

I'm currently trying to install a CentOS DomU and I am facing an issue I 
never experienced before. None of my hard disks are detected. I've now 
tried with a single HDD or with many as I usually do and each time, I'm 
faced with the same result. I tried with a CenOS 5 and 6 DomU with the 
same end result, the installer is not seeing any valid devices on which 
to install.
Here is the command i'm using when launching the installation:

virt-install --vnc --bridge=xenbr0 -p --name=test --ram=2000 --vcpus=2 
--disk /images/disk1.img,format=raw --disk /images/disk2.img,format=raw 
--disk /images/disk3.img,format=raw --disk /images/disk4.img,format=raw 
--disk /images/disk5.img,format=raw 
--location=http://mirror.centos.org/centos/5/os/x86_64
When looking at the installer log I see the following ( I confirmed that 
the 5 devices that timeout are indeed the xvda, xvdb... disks):
<6>XENBUS: Device with no driver: device/vbd/51712
<6>XENBUS: Device with no driver: device/vbd/51728
<6>XENBUS: Device with no driver: device/vbd/51744
<6>XENBUS: Device with no driver: device/vbd/51760
<6>XENBUS: Device with no driver: device/vbd/51776
<6>XENBUS: Device with no driver: device/vif/0
<6>XENBUS: Device with no driver: device/console/0
...
<4>XENBUS: Waiting for devices to initialise: 295s...290s... ...
...
<4>XENBUS: Timeout connecting to device: device/vbd/51712 (local state 
3, remote state 1)
<4>XENBUS: Timeout connecting to device: device/vbd/51728 (local state 
3, remote state 1)
<4>XENBUS: Timeout connecting to device: device/vbd/51744 (local state 
3, remote state 1)
<4>XENBUS: Timeout connecting to device: device/vbd/51760 (local state 
3, remote state 1)
<4>XENBUS: Timeout connecting to device: device/vbd/51776 (local state 
3, remote state 1)
Once the installation fails, If I connect with Virt-Manager, I can see 
that my machines has 5 disks attached. I do not understand why it is 
timing out like that.
I'm looking for any debugging tips or pointers on helping me to resolve 
this rather strange issue.
Thank you.

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