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Qemu VMs: only compute MD5 checksums for existing disks

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grossmj committed 2026-03-04 18:54:52 +08:00
1 parent 5b00529666
commit 8b245c96f8
5 files changed
+18 -18
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gns3server/compute/qemu/qemu_vm.py
+4 -4
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@@ -1131,7 +1131,6 @@ class QemuVM(BaseNode):
await cancellable_wait_run_in_executor(md5sum, self._hdb_disk_image, self.working_dir)
await cancellable_wait_run_in_executor(md5sum, self._hdc_disk_image, self.working_dir)
await cancellable_wait_run_in_executor(md5sum, self._hdd_disk_image, self.working_dir)
super().create()
async def start(self):
@@ -2700,18 +2699,19 @@ class QemuVM(BaseNode):
if not disk_image:
continue
answer[f"hd{drive}_disk_image"] = self.manager.get_relative_image_path(disk_image, self.working_dir)
answer[f"hd{drive}_disk_image_md5sum"] = md5sum(disk_image, self.working_dir)
local_disk = os.path.join(self.working_dir, f"hd{drive}_disk.qcow2")
if os.path.exists(local_disk):
try:
qcow2 = Qcow2(local_disk)
if qcow2.backing_file:
answer[f"hd{drive}_disk_image"] = os.path.basename(local_disk)
answer[f"hd{drive}_disk_image_md5sum"] = md5sum(local_disk, self.working_dir)
# update disk image path to the local disk image and add the backing file name in the answer
answer[f"hd{drive}_disk_image_backing_file"] = os.path.basename(qcow2.backing_file)
answer[f"hd{drive}_disk_image"] = os.path.basename(local_disk)
except (Qcow2Error, OSError) as e:
log.error(f"Could not read qcow2 disk image '{local_disk}': {e}")
continue
# only compute the md5sum if the disk exists to avoid computing one for a backing file
answer[f"hd{drive}_disk_image_md5sum"] = md5sum(local_disk, self.working_dir)
answer["cdrom_image"] = self.manager.get_relative_image_path(self._cdrom_image, self.working_dir)
answer["cdrom_image_md5sum"] = md5sum(self._cdrom_image, self.working_dir)