[Bug 2106499] [NEW] Installation fails with 'OSError: [Errno 16] Device or resource busy: '/dev/mmcblk1p3''

[Heinrich Schuchardt]

Public bug reported:

I tried to install http://cdimage.ubuntu.com/ubuntu-server/daily-
live/20250408/plucky-live-server-riscv64.iso on a StarFive VisionFive 2
board with eMMC. Curtin failed with:

File "/snap/subiquity/6584/lib/python3.12/site-packages/curtin/block/__init__.py", line 1120, in exclusive_open
            fd = os.open(path, flags)
                 ^^^^^^^^^^^^^^^^^^^^
        OSError: [Errno 16] Device or resource busy: '/dev/mmcblk1p3'

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


** Tags: plucky

** Attachment added: "subiquity_20250408.tgz"
   https://bugs.launchpad.net/bugs/2106499/+attachment/5870308/+files/subiquity_20250408.tgz

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https://bugs.launchpad.net/bugs/2106499

Title:
  Installation fails with 'OSError: [Errno 16] Device or resource busy:
  '/dev/mmcblk1p3''

Status in subiquity package in Ubuntu:
  New

Bug description:
  I tried to install http://cdimage.ubuntu.com/ubuntu-server/daily-
  live/20250408/plucky-live-server-riscv64.iso on a StarFive VisionFive
  2 board with eMMC. Curtin failed with:

  File "/snap/subiquity/6584/lib/python3.12/site-packages/curtin/block/__init__.py", line 1120, in exclusive_open
              fd = os.open(path, flags)
                   ^^^^^^^^^^^^^^^^^^^^
          OSError: [Errno 16] Device or resource busy: '/dev/mmcblk1p3'

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