On Tue, Sep 29, 2015 at 4:00 PM, Johnny Hughes johnny@centos.org wrote:
On 09/29/2015 07:55 AM, Pasi Kärkkäinen wrote:
On Tue, Sep 29, 2015 at 12:37:25PM +0100, George Dunlap wrote:
On Sat, Sep 26, 2015 at 9:29 PM, Pasi Kärkkäinen pasik@iki.fi wrote:
On Sat, Sep 26, 2015 at 09:04:23PM +0300, Pasi Kärkkäinen wrote:
Hello,
I just upgraded some of my el6xen boxes to latest CentOS 6.7, Xen 4.4.3 and dom0 3.18.17 rpms, and noticed these new problems:
And third issue aswell:
- Creating an HVM guest using virt-manager with file-based storage uses loopback-mount, not blktap
When I manually create a new Xen HVM guest using virt-manager, and choose file-based image for storage of the VM, it seems to be set up to use file: backend/driver with loopback-mounted image file:
<disk type='file' device='disk'> <driver name='file'/> <source file='/var/lib/libvirt/images/testvm2.img'/> <backingStore/> <target dev='hda' bus='ide'/> </disk># losetup -a /dev/loop0: [fd00]:1709109 (/var/lib/libvirt/images/testvm2.img)
With earlier versions of rpms similar setup used blktap2 backend.. (and yes, I do have blktap module loaded in dom0 kernel).
I remember having to patch some dependency of virt-manager to give it the correct default driver name (something like, it got 'tap' but needed to be 'tap2'). In all likelihood, someone has sussed that 'tap' doesn't work and just replaced it with 'file'. Actually, it's fairly likely if they've updated stuff in CentOS that you're not getting the re-build virt-manager stuff either -- I may have to respin that one as well.
I think it's specified at least in python-virtinst. See these emails from a few years back about the tap/tap2-issue:
https://www.redhat.com/archives/virt-tools-list/2013-June/msg00037.html https://www.redhat.com/archives/virt-tools-list/2013-June/msg00039.html
This is indeed where it was patched before (as a stand alone program) .. have they now rolled that into virt-manager?
I'm guessing updated packages in base have a higher version number than those in the xen4centos repos. Anyway, I'll take a look at some point.
-George