[drbd-mc] Cannot add extra IDE CD-ROM to VM + more issues

[Rasto Levrinc]

On Mon, Jul 23, 2012 at 11:57 AM, Caspar Smit <c.smit at truebit.nl> wrote:
> 2012/7/23 Rasto Levrinc <rasto.levrinc at gmail.com>:
>> On Thu, Jul 19, 2012 at 2:50 PM, Caspar Smit <c.smit at truebit.nl> wrote:
>>> Hi Rasto,
>>>
>>> -After creating a VM I'd like to add another ISO as IDE CD-ROM to the
>>> VM through Add disk while the VM is running.
>>>
>>> 1) Click on Add disk
>>>
>>> 2) Select Image File
>>>
>>> 3) Disk Type IDE CD-ROM
>>>
>>> 4) Now I cannot select the target device (only selectable is <<nothing
>>> selected>>)
>>>
>>> Applying ends in error and using IDE DISK instead doesn;t work because
>>> it doesn't take the ISO file as disk.
>>
>> Hi Caspar,
>>
>> Somehow it was assumed there's only one CD drive.
>> I've made the field editable:
>> http://sourceforge.net/projects/lcmc/files/testing/
>
> Hi Rasto,
>
> Ok, the field is now editable but when add a new disk and enter:
>
> Type: Image File
> Disk type: IDE CD-ROM
> Target device: /dev/hdd (unused)
> Source file: /etc/blah.iso
> Driver name: qemu
> Readonly: yes
>
> And apply i get: Failed to define domain from /etc/libvirt/qemu/debtest.xml.new
> Error: Unknown failure.
>
> When I then select the new disk in the left frame under VMs (KVM, Xen)
> it is detected as /dev/hdc (The first CD-ROM drive) so I guess a
> conflict somewhere?

there was a bug, now fixed here
http://sourceforge.net/projects/lcmc/files/testing/

The tree menu wouldn't be reloaded and cause the subsequent confusion.

>
>>
>>>
>>> More issues:
>>>
>>> -Disconnect and connect to a cluster clears all VM info (need to quit
>>> LCMC and restart to get it working again).
>>
>> Not sure how to reproduce this one. Which VM info do you mean?
>
> I created a VM using LCMC, the domain name is listed under VMs (KVM, Xen).
> When I click disconnect i go to the LCMC 'home' screen again, now when
> i click the same cluster again to re-connect the virtual domain under
> VMs (KVM, Xen) is gone.

Ah, now I could reproduce it, will be fixed.

>
>>
>>>
>>> -Is it possible to refresh the mouse cursor more accurately when
>>> viewing the console for a VM from within LCMC, I have LOADS of
>>> difficulty selecting buttons/menus because the underlying mouse cursor
>>> is already 'offscreen' this is VERY frustrating.
>>
>> You can make tablet instead of mouse device, to avoid this problem.
>
> Ok, i tried to add a tablet device which worked. But I could not
> remove the mouse device (it keeps re-appearing).
>
> I stopped the VM
> Added the tablet
> Clicked on remove device for the mouse. (It got removed on the left
> frame under VMs (KVM, Xen), but remains on the right frame where i
> clicked remove device)
> Start the VM again
> The mouse re-appears on the left frame under VMs (KVM, Xen)!
>

It's not possible to remove the "ps" mouse, but once you add the tablet,
that's what will be used, after the VM restart, so that should solve the
problem.

> PS. I have the same problem when removing disks.

It's not the same problem, it's the menu reloading bug when
adding/removing disks.

>
> Btw, is there a way to add/remove hardware while the VM is running? I
> now shutdown the VM to add/remove hardware.

It's not possible at the moment with LCMC.

>
> Another question, is there a way to easily add the created VM using
> LCMC to the CRM/pacemaker config?
> So after creation click a button like "make highly available" so that
> LCMC creates a VirtualDomain primitive resource for it?

Sounds like a good Idea, now you can only switch to the Pacemaker view
and add VirtualDomain there, there are some pulldown menus though to
make it easier to configure.

Rasto

-- 
Dipl.-Ing. Rastislav Levrinc
rasto.levrinc at gmail.com
Linux Cluster Management Console
http://lcmc.sf.net/