[ovirt-devel] Re: RHV and oVirt CBT issue

Dear team could you please help on the below issue? Thanks Sandro for the advice! On 07/27/2021 14:22，Sandro Bonazzola&lt;sbonazzo(a)redhat.com&gt; <sbonazzo(a)redhat.com&gt; wrote： I would recommend to ask this on devel(a)ovirt.org. Looping in +Eyal Shenitzky <eshenitz(a)redhat.com&gt; Il giorno mar 27 lug 2021 alle ore 08:14 luwen.zhang < luwen.zhang(a)vinchin.com&gt; ha scritto: > > Dear team, > > We had implemented CBT support for RHV and oVirt in our new version, but > when testing we encountered problems of obtain VM increments and also had > abnormal with the VM virtual disks. > > Our testing environment as below: > OS Version: RHEL - 8.4.2105.0 - 3.el8 > OS Description: oVirt Node 4.4.7 > Kernel Version: 4.18.0 - 315.el8.x86_64 > KVM Version: 6.0.0 - 19.el8s > LIBVIRT Version: libvirt-7.4.0-1.el8s > VDSM Version: vdsm-4.40.70.6-1.el8 > > One of the problem is after a successful backup, the VM which gets only > one virtual disk will get 2 identical virtual disks marked as Complete on > oVirt engine web console, like shown below. > > The additional disk might disappear after a while, but before it’s gone > there could be a lot of problems with the VM. > > 1. We cannot perform a new backup, the backup will fail directly. > > 2. The VM itself will run into exception, we cannot even power it off, > and it will also probably get crashed. > > 3. If the VM was initially powered off, after backing up, we cannot power > on the VM. > > And there could be some other problems related with this, is this normal > or there’s something we did wrong? > > Thank you in advance for your help! >