../blockdev.c:629: blockdev_init: Assertion `(bdrv_flags & BDRV_O_CACHE_MASK) == 0' failed.

**【标题描述】能够简要描述问题：说明什么场景下，做了什么操作，出现什么问题（尽量使用正向表达方式）**

**一、缺陷信息**

**内核信息：**
[root@localhost ~]# uname -a
Linux localhost 6.6.0-28.0.0.34.oe2403.x86_64 #1 SMP Mon May 27 22:22:46 CST 2024 x86_64 x86_64 x86_64 GNU/Linux

**缺陷归属组件：**
qemu-kvm
**缺陷归属的版本：**
[root@localhost ~]# rpm -qf /usr/bin/qemu-kvm
qemu-8.2.0-13.oe2403.x86_64
**缺陷简述：**
guestfs启动
**【环境信息】**
硬件信息： 虚拟机

软件信息： 24.03-LTS
- OS版本及分支信息
- 内核信息
- 发现问题的组件版本信息：qemu-8.2.0-13
网络信息
- 如果有特殊组网，请提供网络拓扑信息

**【问题复现步骤】**，请描述具体的操作步骤
**【实际结果】**，请描述出问题的结果和影响
**【其他相关附件信息】**
比如系统message日志/组件日志、dump信息、图片等
/usr/bin/qemu-kvm \
    -global virtio-blk-pci.scsi=off \
    -no-user-config \
    -nodefaults \
    -display none \
    -machine accel=kvm:tcg,graphics=off \
    -cpu max,la57=off \
    -m 1280 \
    -no-reboot \
    -rtc driftfix=slew \
    -no-hpet \
    -global kvm-pit.lost_tick_policy=discard \
    -kernel /var/tmp/.guestfs-0/appliance.d/kernel \
    -initrd /var/tmp/.guestfs-0/appliance.d/initrd \
    -object rng-random,filename=/dev/urandom,id=rng0 \
    -device virtio-rng-pci,rng=rng0 \
    -device virtio-scsi-pci,id=scsi \
    -drive file.file.filename=/tmp/libguestfsemrQHD/overlay1.qcow2,file.driver=qcow2,file.backing.file.locking=off,cache=unsafe,id=hd0,if=none \
    -device scsi-hd,drive=hd0 \
    -drive file=/var/tmp/.guestfs-0/appliance.d/root,snapshot=on,id=appliance,cache=unsafe,if=none,format=raw \
    -device scsi-hd,drive=appliance \
    -device virtio-serial-pci \
    -serial stdio \
    -chardev socket,path=/tmp/libguestfsn5fuZJ/guestfsd.sock,id=channel0 \
    -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 \
    -append "panic=1 console=ttyS0 edd=off udevtimeout=6000 udev.event-timeout=6000 no_timer_check lpj=1818624 printk.time=1 cgroup_disable=memory usbcore.nousb cryptomgr.notests tsc=reliable 8250.nr_uarts=1 root=UUID=04780937-5168-4cf0-8d7a-77412788fa39 selinux=0 guestfs_verbose=1 TERM=xterm"
qemu-kvm: -no-hpet: warning: -no-hpet is deprecated, use '-machine hpet=off' instead
qemu-kvm: ../blockdev.c:629: blockdev_init: Assertion `(bdrv_flags & BDRV_O_CACHE_MASK) == 0' failed.

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