diff --git a/README.md b/README.md index 7b238b0e..083b70d3 100644 --- a/README.md +++ b/README.md @@ -68,6 +68,7 @@ of your `kvm/qemu` virtual machines. - [Backup fails with "Cannot store dirty bitmaps in qcow2 v2 files"](#backup-fails-with-cannot-store-dirty-bitmaps-in-qcow2-v2-files) - [Backup fails with "unable to execute QEMU command 'transaction': Bitmap already exists"](#backup-fails-with-unable-to-execute-qemu-command-transaction-bitmap-already-exists) - [Backup fails with "Error during checkpoint removal: [internal error: bitmap 'XX' not found in backing chain of 'XX']"](#backup-fails-with-error-during-checkpoint-removal-internal-error-bitmap-xx-not-found-in-backing-chain-of-xx) + - [Backup fails with "Virtual machine does not support required backup features, please adjust virtual machine configuration."](#backup-fails-with-virtual-machine-does-not-support-required-backup-features-please-adjust-virtual-machine-configuration) - [Backup fails with "Timed out during operation: cannot acquire state change lock"](#backup-fails-with-timed-out-during-operation-cannot-acquire-state-change-lock) - [Backup fails with "Failed to bind socket to /var/tmp/virtnbdbackup.XX: Permission denied"](#backup-fails-with-failed-to-bind-socket-to-vartmpvirtnbdbackupxx-permission-denied) - [High memory usage during backup](#high-memory-usage-during-backup) @@ -1127,6 +1128,13 @@ You can cleanup this situation by removing the reported checkpoints via: virsh checkpoint-delete --checkpointname --metadata ``` +## Backup fails with "Virtual machine does not support required backup features, please adjust virtual machine configuration." + +The libvirt version you are using does by default not expose the functionality +required for creating full or incremental backups. You can either use the +backup mode `copy` or enable the backup features as described +[here](#libvirt-versions--760-debian-bullseye-ubuntu-20x) + ## Backup fails with "Timed out during operation: cannot acquire state change lock" If backups fail with error: