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Diffstat (limited to 'results/classifier/gemma3:12b/device/1799766')
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diff --git a/results/classifier/gemma3:12b/device/1799766 b/results/classifier/gemma3:12b/device/1799766 new file mode 100644 index 000000000..086a2b5c7 --- /dev/null +++ b/results/classifier/gemma3:12b/device/1799766 @@ -0,0 +1,196 @@ + +-device does not work as -drive do + +Copy/paste of https://stackoverflow.com/questions/52929723/qemu-eject-complains-device-is-not-found-while-it-is-there , since I found this bug trying to find an answer to an own question on Stack Overflow. + +Below, what was my question the answer I wrote, all exposes the bug. + +==================================================================== + + +I need to eject a floppy from QEmu 3.0 monitor, but the command surprisingly fails complaining the device is not found, while it is really there. + +Listing of devices: + + (qemu) info block + fda: dos-6-22/Dos622-1.img (raw) + Attached to: /machine/unattached/device[11] + Removable device: not locked, tray closed + Cache mode: writeback + + hda: hda.img (raw) + Attached to: /machine/peripheral-anon/device[1] + Cache mode: writeback + +Eject command result: + + (qemu) eject fda + Device 'fda' not found + +This is so although this documentation says this is how I have to do: https://www.linux-kvm.org/page/Change_cdrom (just that I want to eject the floppy instead of the CD‑ROM). + +The `change` command complains the same: + + (qemu) change fda dos-6-22/Dos622-2.img raw + Device 'fda' not found + +Is this a bug or me doing something wrong? + +I tried using different node names, with always the same result. + +==================================================================== + +I’m posting as an answer, but I’m not strictly sure. I can just say, if I understand correctly, this is a bug. + +The answer comes in two parts. + +First part, is a stripped down failing invocation: + + 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 + +Second part, is the same without the last argument `-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 + +There is more error when `-global isa-fdc.driveA=fda` is removed. However, the documentation says: + +> -global driver=driver,property=property,value=value +> Set default value of driver’s property prop to value, e.g.: + +> qemu-system-i386 -global ide-hd.physical_block_size=4096 disk-image.img +> In particular, you can **use this to set driver properties for devices which are created automatically by the machine model**. To create a device which is not created automatically and set properties on it, use -device. + +> -global driver.prop=value is shorthand for -global driver=driver,property=prop,value=value. The longhand syntax works even when driver contains a dot. + +What I put a stress on in the quote, suggest I’m not misusing `-global` and that’s most probably a bug. + +**Update for more details:** + +It seems using `-drive` instead of `-device` and `driveA` assignment, the result is not the same, although RedHat documentation recommands using `-device` instead of `-drive` and QEmu 3.0 documentation says `-drive` is essentially a shortcut for `-device` (“essentially”, not telling about the difference). + +Below, two cases, with an except of `info block` and an excerpt of `info qtree`. + +With this one, `eject floppy0` works: + + 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" + +With this one, `eject fda` does not work: + + 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" \ No newline at end of file |