-----Original message----- > From:Shahar Havivi <[email protected]> > Sent: Tuesday 31st December 2013 22:41 > To: René Koch <[email protected]> > Cc: ovirt-users <[email protected]>; Michal Skrivanek <[email protected]>; > Itamar Heim <[email protected]> > Subject: Re: [Users] VM payload > > Hi René, > I think the flow is wrong... > > You have a VM that its initial resources such as network, cdroms etc are > stored in the oVirt engine database. > The engine is sending this data to vdsm to run the VM. > You are using the one of the vdsm hooks to add a cdrom (before the vm start) > for that VM but you are not > modifying the current VM xml - instead you are sending the payload data back > to the engine which store this new data in its database, > This is not effect the current running VM but the next cycle as you notice. > > Please take a look at the floppy hook: > http://gerrit.ovirt.org/gitweb?p=vdsm.git;a=blob;f=vdsm_hooks/floppy/before_vm_start.py;h=7616ac6927935da85833f6a574a4039fb3b04b4d;hb=refs/heads/master > Look how its modifying the domxml set it via: > hooking.write_domxml(domxml)
Thanks a lot for the reply, Shahar. I wrote a hook based on the floppy hook first, but it didn't work with oVirt 3.2 and changed the script then to REST-API calls. I'll test my old Python script, which does manipulate the DOM XML again against oVirt 3.3. Thanks, René > > I think you can use this hook as a template. > > Shahar Havivi. > > > On 31.12.13 18:51, Itamar Heim wrote: > > On 12/20/2013 05:04 PM, René Koch (ovido) wrote: > > >Hi, > > > > > >I created a vdsm hook script for passing payload information (vm name) > > >to a virtual machine, which is placed in before_vm_start folder on my > > >hypervisor (CentOS 6.5). > > > > > >If I create a new virtual machine out of a template some strange things > > >happen: > > >When starting the vm the first time I can see that the vdsm script is > > >executed, but no additional cd drive is shown in this vm. But after > > >shutting down the vm and powering on again, the cd drive appears. > > > > > >Here's the vdsm hook I use: > > >https://raw.github.com/ovido/ovirt-stuff/master/hooks/50_payload > > > > > >I don't really get why the payload isn't working when starting a vm the > > >first time. > > >This happen on oVirt 3.2 and 3.3. > > > > > >Thanks a lot for help! > > > > > > > > > > shahar - thoughts? > _______________________________________________ Users mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/users
