[PATCH qemu-server 3/5] drive: read actual size when cloning TPM drive

[Thomas Ellmenreich <t.ellmenreich@proxmox.com>]

When cloning a TPM drive, don't assume the default size of 4MiB, instead
read and then use the actual size. The default size is constant, but can
be changed, if the granularity of the backing storage is bigger than 4MiB.

This allows TPM storages larger than 4MiB be moved to different storages
without producing an error.

Suggested-by: Fiona Ebner <f.ebner@proxmox.com>
Signed-off-by: Thomas Ellmenreich <t.ellmenreich@proxmox.com>
---
 src/PVE/QemuServer.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/PVE/QemuServer.pm b/src/PVE/QemuServer.pm
index 89192e9f..c93fd4c5 100644
--- a/src/PVE/QemuServer.pm
+++ b/src/PVE/QemuServer.pm
@@ -7876,7 +7876,7 @@ 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') {
-            $size = PVE::QemuServer::Drive::TPMSTATE_DISK_SIZE;
+            $size = get_tpmstate_size($drive->{file}, $storecfg);
         } else {
             clone_disk_check_io_uring(
                 $vmid, $drive, $storecfg, $src_storeid, $storeid, $use_drive_mirror,
-- 
2.47.3