Rich<br>It is libvirt that adds that flag. I am not exactly sure, starting which version it started to do this. It wasn't doing this in libvirt 0.75. I think starting 0.8 it has started to do this.<br> <br>Unless specified otherwise, by default libvirt marks driver type as "raw" which gets passed as format flag to kvm. Because of this qcow virtual size is not exposed to the guest.<br>
<br>OpenNebula, when it creates the libvirt deployment file, doesn't add any flag. We had to change LibvirtDriver.cc and specifically add type=qcow2 attribute to the driver xml flag, and recompile one.<br><br>Here is a post regarding the same.<br>
<a href="http://lists.opennebula.org/htdig.cgi/users-opennebula.org/2010-September/002894.html">http://lists.opennebula.org/htdig.cgi/users-opennebula.org/2010-September/002894.html</a><br><br>Ranga<br><div class="gmail_quote">
On Fri, Oct 22, 2010 at 1:47 PM, Rich Wellner <span dir="ltr"><<a href="mailto:rkw@objenv.com">rkw@objenv.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000">
<font size="-1">Using RC1 I just ran across a bug that was reported
in August. I've included the text of the email below. I just
wanted to give a heads up that it's still there. The weird part
is that I have no idea how it got triggered. I was able to run
images yesterday until about noon. Started playing around with
some other images and from there on out, nothing would start
because one kept requesting the raw flag, including images that
had previously been working.<br>
<br>
<br>
--------------------- PREVIOUS REPORT BELOW
-----------------------<br>
<br>
</font><span style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Times; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; font-size: medium;">
<pre style="white-space: pre-wrap;">Hello,
That is really weird as we have not added a format parameter to the
deployment file we use to create a VM. Could you please send us
$ONE_LOCATION/var/<vm_id>/deployment.0 of one of the VM's that fail?
Thank you
On Tue, Aug 24, 2010 at 2:17 PM, Martin Kopta <<a href="http://lists.opennebula.org/listinfo.cgi/users-opennebula.org" target="_blank">martin at kopta.eu</a>> wrote:
><i> Hello,
</i>><i>
</i>><i> I am playing with latest checkout of ONE (branch one-2.0) and I found out
</i>><i> that my old images aren't working anymore (getting 'no bootable device' on
</i>><i> display). They were of type 'qcow2' which was no problem before (circa 3 weeks
</i>><i> ago). Anyway, I noticed that 'kvm' process does have 'format=raw' [1], so I
</i>><i> converted my images [2] to raw and it seems to be working now.
</i>><i>
</i>><i> Hope this helps someone.
</i>><i>
</i>><i> Best regards,
</i>><i> dum8d0g
</i>><i>
</i>><i> [1] /usr/bin/kvm -S -M pc-0.12 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name one-15 -uuid cea35f06-61cc-c87c-75bc-03e8c3cb637d -nodefaults -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/one-15.monitor,server,nowait -mon chardev=monitor,mode=readline -rtc base=utc -no-acpi -boot c -drive file=/home/one/vms/15/images/disk.0,if=none,id=drive-ide0-0-0,boot=on,format=raw -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive file=/home/one/vms/15/images/disk.1,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -device rtl8139,vlan=0,id=net0,mac=02:00:c0:a8:7a:05,bus=pci.0,addr=0x3 -net tap,fd=41,vlan=0,name=hostnet0 -chardev pty,id=serial0 -device isa-serial,chardev=serial0 -usb -vnc <a href="http://0.0.0.0:0" target="_blank">0.0.0.0:0</a> -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4
</i>><i> [2] qemu-img convert image.qcow2 -O raw image.raw
</i>></pre>
</span><br>
</div>
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