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+id = 1923
+title = "qemu breaks vmdk larger than 600GB."
+state = "closed"
+created_at = "2023-10-06T03:52:45.280Z"
+closed_at = "2023-11-28T16:22:38.680Z"
+labels = ["block:vmdk", "workflow::Patch available"]
+url = "https://gitlab.com/qemu-project/qemu/-/issues/1923"
+host-os = "ubuntu 22.04"
+host-arch = "x86"
+qemu-version = "master qemu-nbd 8.1.50 (v8.1.0-1353-g2f3913f4b2)"
+guest-os = "n/a"
+guest-arch = "n/a"
+description = """The vmdk larger than 600G is corrupted after an edit by qemu-nbd. If I open the corrupted vmdk file, I find an extra **^@** byte.
+```
+RW 4194304 SPARSE "disk-s289.vmdk"
+RW 4^@94304 SPARSE "disk-s290.vmdk"
+RW 4194304 SPARSE "disk-s291.vmdk"
+```"""
+reproduce = """```
+   qemu-img create -f vmdk -o subformat=twoGbMaxExtentSparse disk.vmdk 1T
+   sudo qemu-nbd -c /dev/nbd0 disk.vmdk
+   sudo mkfs.btrfs /dev/nbd0
+   sudo qemu-nbd -d /dev/nbd0
+   qemu-img info disk.vmdk | head
+   ```"""
+additional = """"""