[Bug 531741] [NEW] driver cache='none'/ disappears after adding
Public bug reported: Steps to reproduce: 1. Start with powered off VM. 2. Use 'virsh edit domain' to add the line driver cache='none'/ to each disk clause. 3. Run 'virsh dumpxml domain' and note that the cache lines you just added have disappeared. 4. Start the domain and look at the kvm command line. It includes the cache=none option on the appropriate -disk options. 5. Stop the domain. 6. Use 'virsh edit domain' to make an unrelated change (e.g. memory size). 7. Because the driver cache='none'/ lines were no longer there, the cache options are removed next time the domain is booted. Expected behavior: The driver cache='none'/ line stays in the file just like every other valid option. I'm really confused as to where libvirt is storing the fact that I disabled the cache, since it does take effect despite disappearing from the XML file. Ubuntu Karmic, libvirt 0.7.0-1ubuntu13. ** Affects: libvirt (Ubuntu) Importance: Undecided Status: New -- driver cache='none'/ disappears after adding https://bugs.launchpad.net/bugs/531741 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
Re: [Bug 531741] [NEW] driver cache='none'/ disappears after adding
On Thu, Mar 04, 2010 at 05:59:24AM -, Benjamin Jencks wrote: I'm really confused as to where libvirt is storing the fact that I disabled the cache, since it does take effect despite disappearing from the XML file. When you hand an XML file to libvirt (e.g. with virsh define), it parses it, stores the information in a (set of) C struct(s), and throws the XML away. When you read it back, libvirt takes the information from the (set of) C struct(s) and creates an XML file from this information. Based on what you're saying, it sounds like libvirt correctly parses the cache tag and acts on it, but the routine to generate the XML inside libvirt is missing the few lines of code to serialise this information in the XML file. -- Soren Hansen Ubuntu Developer http://www.ubuntu.com/ -- driver cache='none'/ disappears after adding https://bugs.launchpad.net/bugs/531741 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
