Hi, If it helps, RHEL 7 ships qemu-img 1.5.3 and by default it does not produce compatible images with older qemu, the compat option needs to be specified.
HTH Lucian -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro ----- Original Message ----- > From: "Will Stevens" <wstev...@cloudops.com> > To: dev@cloudstack.apache.org > Cc: "Leo Simons" <lsim...@schubergphilis.com>, "Wilder Rodrigues" > <wrodrig...@schubergphilis.com> > Sent: Monday, 1 December, 2014 21:06:27 > Subject: Re: 05bec59c - kvm, qcow, systemvm qemu-img -o compat > Edison, > According to this page the default compat option is 0.10: > http://manpages.ubuntu.com/manpages/trusty/man1/qemu-img.1.html > > Did you find that to not be the case and is that why you had to add the > compat option? > > BTW, in an attempt to get the master system vms building again, I committed > a change to master to remove the compat option. We now have master system > vms building correctly, but Rohit rightly pointed out that I had basically > reverted your change. > > I created a Jira ticket for this issue: > https://issues.apache.org/jira/browse/CLOUDSTACK-7959 > > I have not reverted my change in master at this point, so it is building > right now, but I also did not make the change to 4.5, so that branch is > currently failing to build system vms. > > I will see if I can track down in which version of qemu the compat option > was added so we can add some intelligent logic around this command. > > Will > > > > > *Will STEVENS* > Lead Developer > > *CloudOps* *| *Cloud Solutions Experts > 420 rue Guy *|* Montreal *|* Quebec *|* H3J 1S6 > w cloudops.com *|* tw @CloudOps_ > > On Thu, Nov 20, 2014 at 1:07 PM, edison su <sudi...@gmail.com> wrote: > >> Hi Leo, >> Our new internal build system are using ubuntu 14.04 or something like >> that, which has qemu 1.x installed by default, that's why I added the >> "compat" option in the build script, otherwise, the image build by >> qemu 1.x, won't work on RHEL 6.x. >> The fix would be, in the build script, check the version of qemu-img, >> if it's 0.x, then don't add "compat" option. There are a lot of people >> still using RHEL 6.x as KVM hypervisor, we have to make sure the image >> we build can still work on these machines. >> >> On Thu, Nov 20, 2014 at 6:49 AM, Leo Simons <lsim...@schubergphilis.com> >> wrote: >> > Hey Edison, all, >> > >> > >> https://github.com/apache/cloudstack/commit/05bec59c1498dbcfb8a1089c86855fd3b433ea58 >> > >> > breaks our internal build with >> > >> > + qemu-img convert -o compat=0.10 -f raw -c -O qcow2 raw.img \ >> > systemvmtemplate-systemvm-persistent-config-4.5.0.124-kvm.qcow2 >> > Unknown option 'compat' >> > qemu-img: Invalid options for file format 'qcow2'. >> > >> > This is on CentOS release 6.6, which has >> qemu-img-0.15.0-1.el6.rfx.x86_64. >> > >> > Based on >> > http://wiki.qemu.org/OlderNews >> > that seems like it is a really old qemu (august 2011). >> > >> > I'm guessing you have a newer OS / newer qemu? Can you please let me >> know what OS, OS version and qemu(-img) version you are using? >> > >> > Also, does anyone know if there some minimum version of qemu-img that >> should be used / cloudstack assumes? Is 0.15 still ok to do an acceptable >> image conversion with? (we currently don't have any kvm use ourselves, but, >> I'd like for our build infra to produce useful kvm images nonetheless). >> > >> > According to >> > http://wiki.qemu.org/ChangeLog/1.1 >> > the -o compat switch was introduced in 1.1. >> > >> > According to >> > >> https://github.com/qemu/qemu/commit/9117b47717ad208b12786ce88eacb013f9b3dd1c >> > the default format was changed from 0.10 to 1.1 in qemu 1.7 and onwards. >> > >> > The libvirt people >> > https://bugzilla.redhat.com/show_bug.cgi?id=997977 >> > say they pass -o compat when qemu supports it (so when v >= 1.1 I >> imagine). >> > >> > I think we should do the same in the build script and I'll make a patch. >> > >> > But, should we publish newer-format images too? According to >> > http://wiki.qemu.org/Features/Qcow3 >> > the new format is much better so I imagine qcow/kvm users will really >> appreciate the newer formats. >> > >> > Thoughts? >> > >> > >> > cheers, >> > >> > >> > Leo >> > >> >> >> >> -- >> Best Regards, >> Edison
