Peter Krempa <pkrempa@xxxxxxxxxx> writes: > On Thu, Jul 09, 2020 at 14:14:32 +0200, Milan Zamazal wrote: >> Milan Zamazal <mzamazal@xxxxxxxxxx> writes: >> > >> > Hi, >> > >> > I would like to clarify how to make snapshots of running VMs with >> > emulated TPM devices. As far as I understand QEMU documentation, it's >> > possible to make snapshots of running VMs with TPM, but it's important >> > to retain the state of swtpm. Does libvirt assist with that in any way >> > or is it completely user's responsibility? libvirt pauses the VM >> > internally when making a snapshot, which should be the right moment to >> > copy the swtpm data, but the user doesn't have control over it. Is >> > there a way to make a copy of swtpm data that is guaranteed to be >> > consistent with the snapshot? >> >> No idea? > > I can comment only on the fact that libvirt doesn't do anything > regarding snapshots on a VM with TPM. Thank you for the confirmation. Can anybody confirm there is no way to perform custom actions while a VM is frozen by libvirt when making a memory snapshot, before we start thinking about workarounds and/or filing a RFE? Thanks, Milan
