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https://access.redhat.com/solutions/46145
Unable to create snapshot of a raw disk while using with RHEL kvm+libvirt. Getting one of the following errors when creating the snapshot error: unsupported configuration: internal snapshot for disk vda unsupported for storage type raw error: Requested operation is not valid: Disk does not support snapshotting Using 'virsh snapshot-create c' command to create snapshot.
https://wiki.libvirt.org/page/I_created_an_external_snapshot,_but_libvirt_will_not_let_me_delete_or_revert_to_it
In libvirt, they are created when using the --disk-only or --memspec option to snapshot-create-as (or when specifying an explicit XML file to snapshot-create that does the same). But until libvirt improves, snapshots are a one-way operation - libvirt can create them but can't do anything further with them.
https://www.humblec.com/error-requested-operation-is-not-valid-disk-does-not-support-snapshotting/
Jul 22, 2011 · The snapshot feature depends on qemu to perform its operation.. For the qemu to work , the image format should be “qcow2 “.. [root@dhcp210-84 qemu]# virsh list Id Name State ———————————-2 fedoraguest running [root@dhcp210-84 qemu]# virsh snapshot-create fedoraguest error: Requested operation is not valid: Disk
https://serverfault.com/questions/990041/how-to-create-internal-snapshot-with-a-virsh-command
For the internal snapshots that virt-manager uses, the only way is to shutoff the VM. snapshot-create-as has a --disk-only option but it doesn't work with snapshot-revert like expected. It's complicated unfortunately – Cole Robinson Nov 1 '19 at 16:02
https://redes-privadas-virtuales.blogspot.com/2011/03/taking-snapshots-on-kvm-with-libvirt.html
Mar 02, 2011 · The sort of the disk image is raw (default format when you create a virtual machine), which is very simple and does not allow snapshotting. In contradistinction to raw, qcow2 (QEMU image format) supports to have smaller images, encryption, compression, snapshots and so on.
https://serverfault.com/questions/692435/qemu-img-snapshot-on-live-vm
The only way to do it on RHEL base Nodes is to use : The above will save the VM state and internally then call qemu-img snapshot -c. Question 2 : virsh snapshot-create <dom> --disk-only --atomic is not supported on base Nodes which are RHEL types (including RHEL 7) because the qemu-kvm is very old.
https://www.cyberciti.biz/faq/how-to-create-create-snapshot-in-linux-kvm-vmdomain/
Jan 22, 2019 · Does qemu-kvm support live snapshot creation? Yes, KVM (Kernel Virtual Machine) does support both live and normal snapshots. The snapshot must base on qcow2 type disk. You can create a snapshot (disk and RAM) from arguments too. Snapshots are supported on KVM VM Host servers only. You can not create snapshots within KVM VM.
http://fedoraproject.org/wiki/Features/Virt_Live_Snapshots
virsh snapshot-delete myvm snapshot2 XXX: also doesn't work: 'deletion of 1 external disk snapshots not supported yet' If the guest has qemu-ga installed and configured, passing --quiesce to snapshot-create-as will make sure the guest's filesystems are frozen for extra safety.
https://stackoverflow.com/questions/30092953/how-to-create-an-external-snapshot-with-virsh-snapshot-create-as
May 07, 2015 · How can I create an external snapshot with virsh snapshot-create-as command or I should try another way? And how to create a multi disk snapshot? And how to create a multi disk snapshot? virsh version is Compiled against library: libvirt 0.10.2 Using library: libvirt 0.10.2 Using API: QEMU 0.10.2 Running hypervisor: QEMU 0.12.1
https://www.linuxtechi.com/create-revert-delete-kvm-virtual-machine-snapshot-virsh-command/
# virsh snapshot-create-as –domain ... That’s all from this article, I hope you guys get an idea on how to manage KVM virtual machine snapshots using virsh command. Please do share your feedback and don’t hesitate to share it among your technical friends 🙂 ... no support for external storage.
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