Unable to reproduce on qemu.git and RHEL 6 x86_64 install CD. /lib/udev/cdrom_id completes successfully and does not print the info_scsi_cmd_err.
qemu.git d66bddd7a4535cca3fc9e98c3195a7411779693c $ x86_64-softmmu/qemu-system-x86_64 -enable-kvm -m 512 -cdrom rhel6.iso Please check that this issue is still present. If yes, please post more information about your configuration (exact QEMU version, qemu command- line, guest OS and version). ** Changed in: qemu Status: New => Invalid -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/612901 Title: Qemu doesn't implement SCSI READ DISC INFORMATION command (0x51) Qemu reports: SK=5h/ASC=20h/ACQ=00h Status in QEMU: Invalid Bug description: # /lib/udev/cdrom_id --debug /dev/sr0 /lib/udev/cdrom_id --debug /dev/sr0 main: probing: '/dev/sr0' cd_inquiry: INQUIRY: [QEMU ][QEMU DVD-ROM ][0.12] cd_profiles: GET CONFIGURATION: size of features buffer 0x0010 cd_profiles: GET CONFIGURATION: feature 'profiles', with 2 entries feature_profiles: profile 0x10 dvd_rom feature_profiles: profile 0x08 cd_rom cd_profiles: current profile 0x08 cd_profiles: profile 0x08 media_cd_rom info_scsi_cmd_err: READ DISC INFORMATION failed with SK=5h/ASC=20h/ACQ=00h ID_CDROM=1 ID_CDROM_CD=1 ID_CDROM_DVD=1 ID_CDROM_MRW=1 ID_CDROM_MRW_W=1 ID_CDROM_MEDIA=1 ID_CDROM_MEDIA_CD=1 qemu reports: ASC=20h/ACQ=00h The scsi command is 0x51. see page page 91: http://www.13thmonkey.org/documentation/SCSI/x3_304_1997.pdf