Eject CD ROM medium fails with 'Tray of device is not open'
Hi Guys, I have hit an issue on testing against our testbed, It's failed to eject cdrom media after reboot from installed the guest OS. The reproduce step: 1. Attach a block device with a ISO media and start install VM from ISO. 2. <disk type='block' device='cdrom'> <driver name='qemu' type='raw'/> <source dev='/dev/disk/by-id/pbdx-vol-cfe60dca-c271-491b-be3c-11fa8d7625a4' index='6'/> <backingStore/> <target dev='hda' bus='ide' tray='open'/> <readonly/> <alias name='ide0-0-0'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> 3. After installed the OS and reboot from system disk successful. 4. Then I want to eject CDROM through update device with the xml like below or using virsh tool 'virsh change-media iso_test hda --eject' 5. All those will failed at "internal error: unable to execute QEMU command 'blockdev-remove-medium': Tray of device 'ide0-0-0' is not open" <disk type='block' device='cdrom'> <driver name='qemu' type='raw'/> <backingStore/> <target dev='hda' bus='ide' tray='open'/> <readonly/> <alias name='ide0-0-0'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> block info looks like below: virsh qemu-monitor-command iso_test --hmp info block setlocale: No such file or directory libvirt-6-format: /dev/disk/by-id/pbdx-vol-cfe60dca-c271-491b-be3c-11fa8d7625a4 (raw, read-only) Attached to: ide0-0-0 Removable device: locked, tray closed Cache mode: writeback Reproduce envrionment: Operating system: rhat8.4 Architecture:x86 kernel version:4.18.0-305 libvirt version:v7.9.0(private build) Hypervisor and version:QEMU 5.1.0(private build) Is there any workaround? Any comments are appreciated. Thanks!
On Mon, Jul 25, 2022 at 05:10:26AM +0000, liang chaojun wrote:
Hi Guys,
I have hit an issue on testing against our testbed, It's failed to eject cdrom media after reboot from installed the guest OS.
Sounds like this one: https://gitlab.com/qemu-project/qemu/-/issues/933 so it may we worth following up with it. If it's the same issue (from your description it sure looks like it) then it is a race condition in the IDE emulation in QEMU and we had to disable an upstream integration test in libvirt for the suite to stop failing :(. Regards, Erik
Thanks Erik firstly for your response, I seems have high probability to hit this issue now. Is there any workaround solution? Thanks! ________________________________ 发件人: Erik Skultety <eskultet@redhat.com> 发送时间: 2022年7月25日 15:50 收件人: liang chaojun <jesonliang040705@hotmail.com> 抄送: libvirt-users@redhat.com <libvirt-users@redhat.com> 主题: Re: Eject CD ROM medium fails with 'Tray of device is not open' On Mon, Jul 25, 2022 at 05:10:26AM +0000, liang chaojun wrote:
Hi Guys,
I have hit an issue on testing against our testbed, It's failed to eject cdrom media after reboot from installed the guest OS.
Sounds like this one: https://gitlab.com/qemu-project/qemu/-/issues/933 so it may we worth following up with it. If it's the same issue (from your description it sure looks like it) then it is a race condition in the IDE emulation in QEMU and we had to disable an upstream integration test in libvirt for the suite to stop failing :(. Regards, Erik
On Mon, Jul 25, 2022 at 08:09:59AM +0000, liang chaojun wrote:
Thanks Erik firstly for your response, I seems have high probability to hit this issue now. Is there any workaround solution?
Thanks!
Try the SATA emulated backend instead of IDE for the CDROM drive. Since you claim to have a high probability reproducer rate, I'd like to kindly ask you to update the issue I linked with your setup and steps to help QEMU folks hunting the bug down? Regards, Erik
________________________________ 发件人: Erik Skultety <eskultet@redhat.com> 发送时间: 2022年7月25日 15:50 收件人: liang chaojun <jesonliang040705@hotmail.com> 抄送: libvirt-users@redhat.com <libvirt-users@redhat.com> 主题: Re: Eject CD ROM medium fails with 'Tray of device is not open'
On Mon, Jul 25, 2022 at 05:10:26AM +0000, liang chaojun wrote:
Hi Guys,
I have hit an issue on testing against our testbed, It's failed to eject cdrom media after reboot from installed the guest OS.
Sounds like this one: https://gitlab.com/qemu-project/qemu/-/issues/933
so it may we worth following up with it. If it's the same issue (from your description it sure looks like it) then it is a race condition in the IDE emulation in QEMU and we had to disable an upstream integration test in libvirt for the suite to stop failing :(.
Regards, Erik
participants (2)
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Erik Skultety -
liang chaojun