Hi, all. It's strange that no one answered. I assumed there are many specialists here who know ovirt deeply enough. As a result, I solved the problem. Step by step: 1. Disabled the filter in /etc/lvm/lvm.conf 2. Got a list of domains with the command: lvs -o vg_name, lv_name, tags 3. Checked the metadata of each vg_name: /dev/vg_name/metadata Found no damage. 4. Compared tags of all vg_names: vgs --noheadings -o tags vg_name I saw an empty value of the tag "MDT_POOL_UUID=" in the problem SD, in other SDs it was not empty and was the same. 5. Restored this tag with the same value as in other SDs: vgchange --deltag MDT_POOL_UUID= /dev/vg_name vgchange --addtag ​​MDT_POOL_UUID=658ff724-50cf-11eb-a4b8-00163e077cea /dev/vg_name 6. After that, ovirt began to issue a checksum error, suggesting its correct value in the error text. Changed the check sum: vgchange --deltag MDT__SHA_CKSUM=02d7c4e6c792c95030147d9bd372374cdc6bdac9 /dev/vg_name vgchange --addtag ​​MDT__SHA_CKSUM=1372727aa5081b4facfacc9ac12b4c07beeaa8db /dev/vg_name After that SD started working correctly. I would be glad if this information helps someone in the future. WBR, Yury Valitsky. > Hi, all. > > I deployed a new oVirt 4.4.4 installation and imported FC storage domains. > However, two storage domains turned out to be empty - they did not have > virtual machines in the "VM import" tab, the virtual disks appeared in the > "disk import" tab with empty aliases. > I downloaded and viewed the OVF_STORE - the old information was partially > overwritten by the new one with an empty number of VMs. > Trying to restore the VM configuration information, I deployed a backup of > the old hosted engine. Version is also 4.4.4. > Thus, it was possible to restore OVF_STORE of the first problematic disk > domain. > But the second storage domain gave an error when updating OVF_STORE. > The same error occurs when trying to export a VM or copy a virtual disk to > another known good storage domain. > At the same time, I successfully download disks from the second storage > domain to my PC by clicking the Download button and saving *.raw. > But snapshots cannot be saved like this. > 1. How can I overwrite OVF_STORE on the second storage domain? If for this > I need to restore the oVirt metadata on the storage domain, how can I do it > correctly? > 2. How can I download VM configuration that has been saved in the hosted > engine? > Thanks in advance for your help. > > WBR, Yury Valitsky