On 08/21/2013 07:25 AM, René Koch (ovido) wrote:
[snip]
I'm just playing around with the payload feature but I can't access the
cd/floppy in my vm.
I adapted Yuriy's script
(http://lists.ovirt.org/pipermail/users/2013-June/014907.html - which is
working fine btw) to create payload xml content and write it with
hooking.write_domxml(domxml).
In vdsm.log I can see that my python script exits with status code 0 and
that the content seems to be added to the vm definition:
Thread-130844::DEBUG::2013-08-21
12:43:52,669::libvirtvm::1520::vm.Vm::(_run)
vmId=`79dc3123-4584-4dd9-b0f0-c28ede13d672`::<?xml version="1.0"
encoding="utf-8"?><domain type="kvm">
<name>centos6</name>
....snip....
</cpu>
<payloads><payload type="cdrom"><file
name="unattended.txt"><content>hostname:
centos6</content></file></payload></payloads></domain>
But in my vm I can't mount the cd drive:
# mount /dev/sr0 /media
mount: you must specify the filesystem type
Is there a special filesystem I have to specify?
Furthermore shouldn't I be able to see the payloads content added to
this vm via REST-API? Because I can't.
Maybe I'm doing some wrong?
Thanks,
René
That's a neat script. I haven't used it--instead I just send xml to the
rest api, something like this, which looks a lot like yours:
<vm id="6aec2d40-e36f-4b02-ab75-933d93f4cb8b"
href="/api/vms/6aec2d40-e36f-4b02-ab75-933d93f4cb8b">
<payloads>
<payload type="cdrom">
<file name="meta-data.txt"><content>some content</content> </file>
</payload>
</payloads>
</vm>
To attach the payload via the rest api, note that you'd need to send a put
request to /api/vms/<uuid> rather than pass the xml in the run/start
action, because that's not yet supported. Doing this, inside my vm I see:
[root@cloud-init-test ~]# blkid
/dev/sr1: UUID="2013-08-21-19-39-40-00" LABEL="CDROM" TYPE="iso9660"
And I can mount it without any problems. You can also check the qemu
process listing on the host--for instance, mine shows:
/usr/bin/qemu-system-x86_64 [...] -drive
file=/var/run/vdsm/payload/29e331f9-42df-46e1-aad1-88101b134606.fe53caf3339d55b2b37a893e19e9f10a.img
While the vm is running, you can check that file with `file` (should
report ISO 9660), mount it on the host, etc.
HTH,
Greg
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