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Bug 1651458 - Fail to start an VM with empty CDROMs
Summary: Fail to start an VM with empty CDROMs
Keywords:
Status: CLOSED DUPLICATE of bug 1598618
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: qemu-kvm
Version: 8.0
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: rc
: 8.0
Assignee: Virtualization Maintenance
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On: 1651457
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-11-20 07:03 UTC by Han Han
Modified: 2018-11-20 08:09 UTC (History)
19 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of: 1651457
Environment:
Last Closed: 2018-11-20 08:09:16 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Han Han 2018-11-20 07:03:50 UTC 
Qemu-kvm version:
qemu-kvm-3.0.0-2.module+el8+2208+e41b12e0.x86_64

+++ This bug was initially created as a clone of Bug #1651457 +++

Description of problem:
As subject

Version-Release number of selected component (if applicable):
qemu-3.0.0 or after

How reproducible:
100%

Steps to Reproduce:
1. Start an VM as following
# qemu-kvm -drive if=none,id=drive-ide0-0-0,readonly=on,cache=none -device ide-cd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,write-cache=on
qemu-kvm: -drive if=none,id=drive-ide0-0-0,readonly=on,cache=none: Must specify either driver or file


Actual results:
As above

Expected results:
# qemu-kvm -drive if=none,id=drive-ide0-0-0,readonly=on,cache=none -device ide-cd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,write-cache=on
VNC server running on ::1:5900

Additional info:
This will block libvirt tests: vm start in with empty cdrom. Please fix it asap.

It works on qemu-2.12.

It can be reproduced on scsi and sata bus, too.
# qemu-kvm -drive if=none,id=drive-scsi0-0-0-0,readonly=on,cache=none -device scsi-cd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,write-cache=on
Unable to init server: Could not connect: Connection refused
qemu-system-x86_64: -drive if=none,id=drive-scsi0-0-0-0,readonly=on,cache=none: Must specify either driver or file

# qemu-kvm -drive if=none,id=drive-sata0-0-0,media=cdrom,readonly=on,cache=none -device ide-cd,bus=sata0.0,drive=drive-sata0-0-0,id=sata0-0-0,write-cache=on
Unable to init server: Could not connect: Connection refused
qemu-system-x86_64: -drive if=none,id=drive-sata0-0-0,media=cdrom,readonly=on,cache=none: Must specify either driver or file
Comment 1 CongLi 2018-11-20 07:29:31 UTC 
Based on:
Bug 1377321 - libvirt should not pass image specific parameters (cache, AIO) to empty cdrom drives
https://bugzilla.redhat.com/show_bug.cgi?id=1598618#c6


Han han,

Could you please take a look of those bugs?
In qemu, you could remove cache option in the testing.

I prefer close this bug if you agree with that.

Thanks.
Comment 2 Han Han 2018-11-20 08:09:16 UTC 
(In reply to CongLi from comment #1)
> Based on:
> Bug 1377321 - libvirt should not pass image specific parameters (cache, AIO)
> to empty cdrom drives
> https://bugzilla.redhat.com/show_bug.cgi?id=1598618#c6
> 
> 
> Han han,
> 
> Could you please take a look of those bugs?
> In qemu, you could remove cache option in the testing.
> 
> I prefer close this bug if you agree with that.
> 
> Thanks.

Well, it works without cache=none... I think it is duplicated.

*** This bug has been marked as a duplicate of bug 1598618 ***
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