[Bug 2129037] [NEW] all dracut 108 autopkgtest fail [dd: IO error: Invalid input]

[Benjamin Drung]

Public bug reported:

All dracut 108-3ubuntu3 autopkgtest fail with:

```
dd: IO error: Invalid input
```

The relevant code calling dd lives in modules.d/70test-root/test-
init.sh:

```
echo "dracut-root-block-success" | dd oflag=direct,dsync status=none of=/dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_marker
```

** Affects: dracut (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: rust-coreutils (Ubuntu)
     Importance: Undecided
         Status: New

** Also affects: rust-coreutils (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/2129037

Title:
  all dracut 108 autopkgtest fail [dd: IO error: Invalid input]

Status in dracut package in Ubuntu:
  New
Status in rust-coreutils package in Ubuntu:
  New

Bug description:
  All dracut 108-3ubuntu3 autopkgtest fail with:

  ```
  dd: IO error: Invalid input
  ```

  The relevant code calling dd lives in modules.d/70test-root/test-
  init.sh:

  ```
  echo "dracut-root-block-success" | dd oflag=direct,dsync status=none of=/dev/disk/by-id/scsi-0QEMU_QEMU_HARDDISK_marker
  ```

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