[CentOS-virt] KVM backup

Hello

I take backups while virtual machines are running live. For this, first I takes snapshot. Then I back up the original disk. But when I look at the snapshot list (1595157757,1595162592). I see that it is passive. I cannot delete them either.

What would be the reason ?

Name Creation Time State ------------------------------------------------------------ 1595157757 2020-07-19 14:22:37 +0300 disk-snapshot 1595162592 2020-07-19 15:43:12 +0300 disk-snapshot

Error: error: Failed to delete snapshot 1595162592 error: unsupported configuration: deletion of 1 external disk snapshots not supported yet

Thanks.