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Diffstat (limited to 'results/classifier/mode-deepseek-r1:32b/reasoning/system/739')
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diff --git a/results/classifier/mode-deepseek-r1:32b/reasoning/system/739 b/results/classifier/mode-deepseek-r1:32b/reasoning/system/739 new file mode 100644 index 00000000..b4db5476 --- /dev/null +++ b/results/classifier/mode-deepseek-r1:32b/reasoning/system/739 @@ -0,0 +1,23 @@ +<think> +Okay, so I'm trying to figure out whether this QEMU bug is related to user-mode or system-mode. The problem is that when using the -blockdev option along with -snapshot, the snapshot isn't working as expected. Instead of changes being written to a temporary file, they're going directly to the disk image. + +First, I remember that in QEMU, snapshots can be used to create point-in-time images without modifying the original disk. The -snapshot option usually creates a temporary file where any changes are stored until you commit them or shut down the VM. + +The user provided steps to reproduce: they run QEMU with -blockdev and -snapshot, make a change (create test.txt), power off the guest, then restart and find that test.txt is still present. This suggests that the snapshot didn't capture the changes temporarily but wrote them directly. + +When they switch from using -blockdev to the legacy -drive option, the snapshot works fine. So the issue seems tied to how blockdev handles snapshots compared to drive. + +I need to think about what's different between -blockdev and -drive in QEMU. The blockdev options are part of the newer device model and allow more flexibility, including using block devices with different backends or configurations. Maybe there's a missing parameter when using blockdev that tells QEMU to use a snapshot. + +Looking into how QEMU handles snapshots: with -snapshot, it creates a QCOW2 file by default if not specified otherwise. The problem arises because the changes are going to the base image instead of a temporary one. This might be due to the way the block device is configured when using -blockdev without specifying where the snapshot should be stored. + +Perhaps with -blockdev, you need an additional parameter to specify that it's a snapshot. Maybe something like node-name or a driver option that tells QEMU to create a snapshot file instead of modifying the base image directly. + +In contrast, the legacy -drive might automatically handle this when combined with -snapshot, ensuring that any writes go to a temporary file and not the original disk. + +So the bug is likely in how the blockdev configuration interacts with the snapshot option. It's possible that the -blockdev setup doesn't correctly apply the necessary settings for snapshots, leading QEMU to bypass the temporary storage and write directly. + +Since this involves device configurations and how QEMU handles block devices at a lower level, it seems like a system-mode issue. System-mode bugs typically involve hardware emulation, device drivers, and deeper OS interactions. +</think> + +system \ No newline at end of file |