Bug 1026583

Summary: fail to specify "readonly=on|off" for pass-through scsi-block and emulated ide cdrom
Product: Red Hat Enterprise Linux 7 Reporter: Sibiao Luo <sluo>
Component: qemu-kvmAssignee: Virtualization Maintenance <virt-maint>
Status: CLOSED NOTABUG QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.0CC: acathrow, bsarathy, chayang, juzhang, michen, mkenneth, pbonzini, qzhang, virt-maint, xfu
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 1026274 Environment:
Last Closed: 2013-11-05 11:17:38 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1026274    
Bug Blocks:    

Comment 1 Sibiao Luo 2013-11-05 02:13:50 UTC 
Tried the rhel7.0 also hit such issue.

host info:
# uname -r && rpm -q qemu-kvm
3.10.0-33.el7.x86_64
qemu-kvm-1.5.3-10.el7.x86_64
guest info:
# uname -r
3.10.0-33.el7.x86_64

# /usr/libexec/qemu-kvm -M pc -enable-kvm -m 2048 -smp 2,sockets=2,cores=1,threads=1 -drive file=/dev/sr0,if=none,id=drive-cdrom-disk,format=raw,media=cdrom,werror=stop,rerror=stop -device virtio-scsi-pci,bus=pci.0,addr=0x8,id=scsi0 -device scsi-block,drive=drive-cdrom-disk,bus=scsi0.0,id=cdrom-disk,bus=scsi0.0 -vnc :1 -monitor stdio
QEMU 1.5.3 monitor - type 'help' for more information
(qemu) info block
drive-cdrom-disk: removable=0 io-status=ok file=/dev/sr0 ro=1 drv=raw encrypted=0 bps=0 bps_rd=0 bps_wr=0 iops=0 iops_rd=0 iops_wr=0
ide1-cd0: removable=1 locked=0 tray-open=0 io-status=ok [not inserted]
floppy0: removable=1 locked=0 tray-open=0 [not inserted]
sd0: removable=1 locked=0 tray-open=0 [not inserted]
(qemu) q
# /usr/libexec/qemu-kvm -M pc -enable-kvm -m 2048 -smp 2,sockets=2,cores=1,threads=1 -drive file=/dev/sr0,if=none,id=drive-cdrom-disk,format=raw,media=cdrom,werror=stop,rerror=stop,readonly=off -device virtio-scsi-pci,bus=pci.0,addr=0x8,id=scsi0 -device scsi-block,drive=drive-cdrom-disk,bus=scsi0.0,id=cdrom-disk,bus=scsi0.0 -vnc :1 -monitor stdio
QEMU 1.5.3 monitor - type 'help' for more information
(qemu) info block
drive-cdrom-disk: removable=0 io-status=ok file=/dev/sr0 ro=1 drv=raw encrypted=0 bps=0 bps_rd=0 bps_wr=0 iops=0 iops_rd=0 iops_wr=0
ide1-cd0: removable=1 locked=0 tray-open=0 io-status=ok [not inserted]
floppy0: removable=1 locked=0 tray-open=0 [not inserted]
sd0: removable=1 locked=0 tray-open=0 [not inserted]
(qemu) q
# /usr/libexec/qemu-kvm -M pc -enable-kvm -m 2048 -smp 2,sockets=2,cores=1,threads=1 -drive file=/dev/sr0,if=none,id=drive-cdrom-disk,format=raw,media=cdrom,werror=stop,rerror=stop,readonly=on -device virtio-scsi-pci,bus=pci.0,addr=0x8,id=scsi0 -device scsi-block,drive=drive-cdrom-disk,bus=scsi0.0,id=cdrom-disk,bus=scsi0.0 -vnc :1 -monitor stdio
QEMU 1.5.3 monitor - type 'help' for more information
(qemu) info block
drive-cdrom-disk: removable=0 io-status=ok file=/dev/sr0 ro=1 drv=raw encrypted=0 bps=0 bps_rd=0 bps_wr=0 iops=0 iops_rd=0 iops_wr=0
ide1-cd0: removable=1 locked=0 tray-open=0 io-status=ok [not inserted]
floppy0: removable=1 locked=0 tray-open=0 [not inserted]
sd0: removable=1 locked=0 tray-open=0 [not inserted]
(qemu) q
Comment 3 Paolo Bonzini 2013-11-05 11:17:38 UTC 
Not a bug; media=cdrom implies readonly=on.