[pve-devel] [PATCH v4 qemu-server] fix #3963: Skip TPM startup for template VMs
Filip Schauer
f.schauer at proxmox.com
Thu Aug 10 11:20:36 CEST 2023
Skip the software TPM startup when starting a template VM for performing
a backup. This fixes an error that occurs when the TPM state disk is
write-protected.
Signed-off-by: Filip Schauer <f.schauer at proxmox.com>
---
Changes since v3:
* Add a comment explaining why not to add a TPM to the command if the VM is a template
* Refactor code with post-if
PVE/QemuServer.pm | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 484bc7f..bf1de17 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -3823,7 +3823,9 @@ sub config_to_command {
push @$devices, @$audio_devs;
}
- add_tpm_device($vmid, $devices, $conf);
+ # Add a TPM only if the VM is not a template,
+ # to support backing up template VMs even if the TPM disk is write-protected.
+ add_tpm_device($vmid, $devices, $conf) if (!PVE::QemuConfig->is_template($conf));
my $sockets = 1;
$sockets = $conf->{smp} if $conf->{smp}; # old style - no longer iused
@@ -5923,7 +5925,7 @@ sub vm_start_nolock {
PVE::Systemd::enter_systemd_scope($vmid, "Proxmox VE VM $vmid", %systemd_properties);
my $tpmpid;
- if (my $tpm = $conf->{tpmstate0}) {
+ if ((my $tpm = $conf->{tpmstate0}) && !PVE::QemuConfig->is_template($conf)) {
# start the TPM emulator so QEMU can connect on start
$tpmpid = start_swtpm($storecfg, $vmid, $tpm, $migratedfrom);
}
--
2.39.2
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