[virt-tools-list] iSCSI disk goes missing after domU installation

[Konrad Rzeszutek Wilk]

On Fri, Apr 13, 2012 at 11:58:13AM -0400, Alan McKay wrote:
> Hey folks,
> 
> I posted this to the xen list and am not getting much response so figure
> I'd try here too.   I finally got my NICs working (Ubuntu bug) and now I'm
> having another issue.
> 
> dom0 is RHEL5.8
> 
> [root at solexa1 xen]# rpm -qa | grep -i xen
> xen-3.0.3-135.el5_8.2
> kernel-xen-devel-2.6.18-128.el5
> xen-libs-3.0.3-135.el5_8.2
> kernel-xen-devel-2.6.18-308.1.1.el5
> kernel-xen-2.6.18-128.el5
> xen-libs-3.0.3-135.el5_8.2
> kernel-xen-devel-2.6.18-274.12.1.el5
> kernel-xen-2.6.18-274.12.1.el5
> kernel-xen-2.6.18-308.1.1.el5
> [root at solexa1 xen]# uname -a
> Linux solexa1 2.6.18-274.12.1.el5xen #1 SMP Tue Nov 8 21:46:04 EST 2011
> x86_64 x86_64 x86_64 GNU/Linux
> 
> I tried this with both CentOS 5.8 and Ubuntu 12.04 (beta2) installs in domU
> and same behavior.
> 
> Use virt-manager to create my VM.  I had previously used the virsh
> commands to create an iSCSI pool (I think that is the right term) and
> so my iSCSI disk shows up fine in virt-manager and I can add it to the
> VM.
> 
> The install goes well the disk is there - I can either choose to
> partition it manually or let it go automatic.  During the install from
> the Ubuntu live CD I can open a shell and see the disk mounted and
> stuff being installed to it.

What is the disk that shows up in the guest? Is it hda or xvda?
Can you include the output of 'lspci' and 'dmesg' please?

> 
> After the install I can reboot from the Ubuntu live CD and I see the
> iSCSI disk there.  I can mount stuff and look at it - looks like the
> install went fine.
> 
> But I reboot and try to boot from the HD and it says :
> 
> Boot from Hard Disk failed: could not read the boot disk
> FATAL: No bootable device

That implies that the initrd didn't include the proper driver.
> 
> What's up with that?
> 
> thanks,
> -Alan

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