[Bug 1907776] [NEW] Mounting VFat drive yields error messages.

[John Doe]

Public bug reported:

Mounting a virtual Fat drive results in error messages (see attached
image).

* https://www.qemu.org/docs/master/system/images.html#virtual-fat-disk-
images

The "drive" is however mounted, and as a test, saving a text file to the
drive is successfully stored in the directory `/tmp`, which can be read
after shutdown of Qemu.

    Archlinux 5.9.11-arch2-1 (64-bit)
    qemu-headless 5.1.0-3
  
    qemu-system-x86_64 -boot order=d -name test \
      -enable-kvm -m 2G -cpu host -k sv \
      -daemonize \
      -drive 
if=pflash,format=raw,readonly,file=/usr/share/edk2-ovmf/x64/OVMF_CODE.fd \
      -drive if=pflash,format=raw,file=~/vm/OVMF_VARS.local.fd \
      -drive if=ide,format=raw,media=disk,index=1,file=fat:rw:/tmp \
      -vnc :1 \
      -cdrom /obj/archlinux/release/2020.10.01-x86_64.iso \
      -drive format=raw,index=0,media=disk,file=~/vm/qemu.raw

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: vfat

** Attachment added: "Screenshots"
   
https://bugs.launchpad.net/bugs/1907776/+attachment/5442700/+files/qemu_bug_scrshot.png

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https://bugs.launchpad.net/bugs/1907776

Title:
  Mounting VFat drive yields error messages.

Status in QEMU:
  New

Bug description:
  Mounting a virtual Fat drive results in error messages (see attached
  image).

  * https://www.qemu.org/docs/master/system/images.html#virtual-fat-
  disk-images

  The "drive" is however mounted, and as a test, saving a text file to
  the drive is successfully stored in the directory `/tmp`, which can be
  read after shutdown of Qemu.

      Archlinux 5.9.11-arch2-1 (64-bit)
      qemu-headless 5.1.0-3
    
      qemu-system-x86_64 -boot order=d -name test \
        -enable-kvm -m 2G -cpu host -k sv \
        -daemonize \
        -drive 
if=pflash,format=raw,readonly,file=/usr/share/edk2-ovmf/x64/OVMF_CODE.fd \
        -drive if=pflash,format=raw,file=~/vm/OVMF_VARS.local.fd \
        -drive if=ide,format=raw,media=disk,index=1,file=fat:rw:/tmp \
        -vnc :1 \
        -cdrom /obj/archlinux/release/2020.10.01-x86_64.iso \
        -drive format=raw,index=0,media=disk,file=~/vm/qemu.raw

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