[pve-devel] [PATCH qemu-server 16/16] fix #4693: drive: allow non-raw image formats for TPM state drive

[Fiona Ebner]

Now that there is a mechanism to export non-raw images as FUSE for
swtpm, it's possible to align the possible formats with what other
disk types can use. This also reduces special-casing for TPM state
volumes.

Signed-off-by: Fiona Ebner <f.ebner at proxmox.com>
---

Build-dependency bump and dependency bump for pve-storage needed!

 src/PVE/API2/Qemu.pm        | 7 ++-----
 src/PVE/QemuServer.pm       | 1 -
 src/PVE/QemuServer/Drive.pm | 2 ++
 3 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/PVE/API2/Qemu.pm b/src/PVE/API2/Qemu.pm
index 4243e4da..e77245a3 100644
--- a/src/PVE/API2/Qemu.pm
+++ b/src/PVE/API2/Qemu.pm
@@ -627,13 +627,13 @@ my sub create_disks : prototype($$$$$$$$$$$) {
                         $storecfg, $storeid, $vmid, $fmt, $arch, $disk, $smm, $amd_sev_type,
                     );
                 } elsif ($ds eq 'tpmstate0') {
-                    # swtpm can only use raw volumes, and uses a fixed size
+                    # A fixed size is used for TPM state volumes
                     $size = PVE::Tools::convert_size(
                         PVE::QemuServer::Drive::TPMSTATE_DISK_SIZE,
                         'b' => 'kb',
                     );
                     $volid =
-                        PVE::Storage::vdisk_alloc($storecfg, $storeid, $vmid, "raw", undef, $size);
+                        PVE::Storage::vdisk_alloc($storecfg, $storeid, $vmid, $fmt, undef, $size);
                 } else {
                     $volid =
                         PVE::Storage::vdisk_alloc($storecfg, $storeid, $vmid, $fmt, undef, $size);
@@ -675,9 +675,6 @@ my sub create_disks : prototype($$$$$$$$$$$) {
                     ) {
                         die "$ds - cloud-init drive is already attached at '$ci_key'\n";
                     }
-                } elsif ($ds eq 'tpmstate0' && $volume_format ne 'raw') {
-                    die
-                        "tpmstate0: volume format is '$volume_format', only 'raw' is supported!\n";
                 }
             }
 
diff --git a/src/PVE/QemuServer.pm b/src/PVE/QemuServer.pm
index dcc5cafb..0326c054 100644
--- a/src/PVE/QemuServer.pm
+++ b/src/PVE/QemuServer.pm
@@ -7825,7 +7825,6 @@ sub clone_disk {
         } elsif ($dst_drivename eq 'efidisk0') {
             $size = $efisize or die "internal error - need to specify EFI disk size\n";
         } elsif ($dst_drivename eq 'tpmstate0') {
-            $dst_format = 'raw';
             $size = PVE::QemuServer::Drive::TPMSTATE_DISK_SIZE;
         } else {
             clone_disk_check_io_uring(
diff --git a/src/PVE/QemuServer/Drive.pm b/src/PVE/QemuServer/Drive.pm
index 79dd22e6..f54f9612 100644
--- a/src/PVE/QemuServer/Drive.pm
+++ b/src/PVE/QemuServer/Drive.pm
@@ -10,6 +10,7 @@ use List::Util qw(first);
 
 use PVE::RESTEnvironment qw(log_warn);
 use PVE::Storage;
+use PVE::Storage::Common;
 use PVE::JSONSchema qw(get_standard_option);
 
 use base qw(Exporter);
@@ -570,6 +571,7 @@ my $tpmstate_fmt = {
         format_description => 'volume',
         description => "The drive's backing volume.",
     },
+    format => get_standard_option('pve-vm-image-format', { optional => 1 }),
     size => {
         type => 'string',
         format => 'disk-size',
-- 
2.47.3