QEmu'eject'抱怨设备在那里时找不到

我发帖回答,但我不能完全确定。我可以说,如果我理解正确,这是一个错误。

答案分为两部分。

第一部分是一个简单的失败调用:

qemu-system-i386 \
   -monitor stdio \
   -machine type=isapc,vmport=off \
   -blockdev driver=file,node-name=fda-img,filename=fda.img \
   -blockdev driver=raw,node-name=fda,file=fda-img \
   -global isa-fdc.driveA=fda

(qemu) info block
ide1-cd0: [not inserted]
    Attached to:      /machine/unattached/device[19]
    Removable device: not locked, tray closed

sd0: [not inserted]
    Removable device: not locked, tray closed

fda: fda.img (raw)
    Attached to:      /machine/unattached/device[13]
    Removable device: not locked, tray closed
    Cache mode:       writeback
(qemu) eject fda
Device 'fda' not found

第二部分,没有最后一个论点也是一样的 -global isa-fdc.driveA=fda

qemu-system-i386 \
   -monitor stdio \
   -machine type=isapc,vmport=off \
   -blockdev driver=file,node-name=fda-img,filename=fda.img \
   -blockdev driver=raw,node-name=fda,file=fda-img

(qemu) info block
ide1-cd0: [not inserted]
    Attached to:      /machine/unattached/device[19]
    Removable device: not locked, tray closed

floppy0: [not inserted]
    Attached to:      /machine/unattached/device[13]
    Removable device: not locked, tray closed

sd0: [not inserted]
    Removable device: not locked, tray closed
(qemu) eject floppy0

当 -全球isa fdc。Driva=fda 被移除。然而,文件显示:

-全局驱动程序=驱动程序,属性=属性,值=值 将drivers property prop的默认值设置为value,例如:

qemu-system-i386-全球ide hd。物理块大小=4096磁盘映像。img 尤其是,你可以 使用此选项可设置由机器型号自动创建的设备的驱动程序属性 。要创建一个非自动创建的设备并设置其属性,请使用-device。

-全球驱动力。prop=value是-global driver=driver,property=prop,value=value的缩写。即使驱动程序中包含一个点,也可以使用longhand语法。

我在引用中强调的是,我没有滥用 -global 这很可能是一个错误。

更新以了解更多详细信息:

它似乎在使用 -drive 而不是 -device 和 driveA 虽然RedHat文档建议使用 -装置 而不是 -开车 以及QEmu3。0文件显示 -开车 基本上是一条捷径 -装置 (本质上,没有说明区别)。

下面是两个案例,除了 info block 摘自 info qtree .

有了这个, eject floppy0 作品:

qemu-system-i386 \
   -monitor stdio \
   -machine type=isapc,vmport=off \
   -drive format=raw,if=floppy,media=disk,file=fda.img \
   -device isa-vga,vgamem_mb=1 \
   -serial msmouse

[…]

floppy0 (#block156): fda.img (raw)
    Attached to:      /machine/unattached/device[12]
    Removable device: not locked, tray closed
    Cache mode:       writeback

[…]

  dev: isa-fdc, id ""
    iobase = 1008 (0x3f0)
    irq = 6 (0x6)
    dma = 2 (0x2)
    driveA = ""
    driveB = ""
    check_media_rate = true
    fdtypeA = "auto"
    fdtypeB = "auto"
    fallback = "288"
    isa irq 6
    bus: floppy-bus.0
      type floppy-bus
      dev: floppy, id ""
        unit = 0 (0x0)
        drive = "floppy0"
        logical_block_size = 512 (0x200)
        physical_block_size = 512 (0x200)
        min_io_size = 0 (0x0)
        opt_io_size = 0 (0x0)
        discard_granularity = 4294967295 (0xffffffff)
        write-cache = "auto"
        share-rw = false
        drive-type = "144"

有了这个, eject fda 不起作用:

qemu-system-i386 \
   -monitor stdio \
   -machine type=isapc,vmport=off \
   -blockdev driver=file,node-name=fda-img,filename=fda.img \
   -blockdev driver=raw,node-name=fda,file=fda-img \
   -global isa-fdc.driveA=fda \
   -device isa-vga,vgamem_mb=1 \
   -serial msmouse

[…]

fda: fda.img (raw)
    Attached to:      /machine/unattached/device[12]
    Removable device: not locked, tray closed
    Cache mode:       writeback

[…]

  dev: isa-fdc, id ""
    iobase = 1008 (0x3f0)
    irq = 6 (0x6)
    dma = 2 (0x2)
    driveA = ""
    driveB = ""
    check_media_rate = true
    fdtypeA = "auto"
    fdtypeB = "auto"
    fallback = "288"
    isa irq 6
    bus: floppy-bus.0
      type floppy-bus
      dev: floppy, id ""
        unit = 0 (0x0)
        drive = "fda"
        logical_block_size = 512 (0x200)
        physical_block_size = 512 (0x200)
        min_io_size = 0 (0x0)
        opt_io_size = 0 (0x0)
        discard_granularity = 4294967295 (0xffffffff)
        write-cache = "auto"
        share-rw = false
        drive-type = "144"