On Thu, 2010-03-11 at 10:16 -0500, Cole Robinson wrote: > On 03/11/2010 08:47 AM, James Laska wrote: > > On Thu, 2010-03-11 at 16:24 +0800, Li Ming wrote: > >> Hi, > >> > >> I want to use python to write an auto-test script to test fedora > >> install CD in KVM,my idea is: use virt-install to create a guest with > >> arguments --cdrom FedoraCD.iso, then the guest will boot with CD,with > >> the kickstart or something, the install will automatically > >> continue,after CD1 is finished, the anaconda will prompt to insert CD2, > >> I want all this automatic,meaning my script should detect the CD1 > >> completed,and then swap to CD2, then the install continue. Is this > >> possible for libvirt? I have successfully written a script to do DVD > >> text install(totally imitate DVD install),you can see it at[1], I know > >> for CD,it's a challenge,you suggestion is very important to me. > >> > >> *[1] > >> http://git.fedorahosted.org/git/autoqa.git?p=autoqa.git;a=blob;f=tests/anaconda/dvd_install.py;h=5bcd3500cb724ac49753619e83911a034435cb3e;hb=5e78f629dc6b8315812585ba9d5b4801145fb5f7 > > > > One approach, which might not reflect how users really install using CD > > media, would be to attach all CD media required to the guest during the > > install. The installer will always check the attached optical devices > > for the disc it's looking for before prompting the user. I've done this > > in the past, but it has the limitation that you can only attach a > > certain number of IDE CDROM devices to the guest at a time. > > > > With Xen, there was the xenstore-write command which could be used to > > change the ISO used for an attached block device. I'm not sure if there > > is a similar command using just libvirt? > > > > This can be done with libvirt/virsh, it's just unintuitive. Say your VM has a > <disk> block like: > > <disk type='file' device='cdrom'> > <driver name='qemu'/> > <target dev='hdc' bus='ide'/> > <source file='/some/path/to/media.iso'/> > <readonly/> > </disk> > > Copy that into its own file (say, 'test.xml') and change the <source> line so > it looks like: > > <disk type='file' device='cdrom'> > <driver name='qemu'/> > <target dev='hdc' bus='ide'/> > <source file='/some/path/to/NEWMEDIA.iso'/> > <readonly/> > </disk> > > Then for the running VM, use: > > virsh attach-device VMNAME test.xml > > Full on removing the <source> line will leave the CDROM empty, you still need > to use 'attach-device' though. We should really have a convenience command > 'eject' or something like that.
Thanks, this process worked! -James
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