Hi! Some Debian users who are installing Debian for sparc64 in an LDOM run into the problem that the debian-installer is unable to detect the installation medium. Digging through the sources of the responsible debian-installer module, it turns out that d-i uses "udevadm info" to query information from all available block devices listed in /sys/block. To detect a CD-ROM, it looks for "ID_CDROM=1" or "ID_TYPE=cd". Unfortunately, this fails with sunvdc with a virtual CD-ROM drive as the data retrieved by "udevadm info" is very limited as compared to a standard PC with a physical CD-ROM drive. For comparison, on a SPARC T5, I get: /sys/block # udevadm info -q env -p /sys/block/vdiskd DEVLINKS=/dev/disk/by-uuid/2017-03-14-14-05-33-00 /dev/disk/by-label/Debian\x209.0\x20sparc64\x201 DEVNAME=/dev/vdiskd DEVPATH=/devices/channel-devices/vdc-port-3-0/block/vdiskd DEVTYPE=disk ID_FS_LABEL=Debian_9.0_sparc64_1 ID_FS_LABEL_ENC=Debian\x209.0\x20sparc64\x201 ID_FS_TYPE=iso9660 ID_FS_USAGE=filesystem ID_FS_UUID=2017-03-14-14-05-33-00 ID_FS_UUID_ENC=2017-03-14-14-05-33-00 ID_PART_TABLE_TYPE=sun MAJOR=254 MINOR=24 SUBSYSTEM=block USEC_INITIALIZED=634522 /sys/block # Compare this to the output for a standard USB CD-ROM device on my laptop: glaubitz@ikarus:/sys/block$ udevadm info -q env -p /sys/block/sr0 DEVLINKS=/dev/disk/by-path/pci-0000:00:14.0-usb-0:2:1.0-scsi-0:0:0:0 /dev/disk/by-id/usb-TSSTcorp_CDDVDW_SE-S084D_0j468695-0:0 /dev/dvdrw /dev/dvd /dev/cdrom /dev/cdrw DEVNAME=/dev/sr0 DEVPATH=/devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/host4/target4:0:0/4:0:0:0/block/sr0 DEVTYPE=disk ID_BUS=usb ID_CDROM=1 ID_CDROM_CD=1 ID_CDROM_CD_R=1 ID_CDROM_CD_RW=1 ID_CDROM_DVD=1 ID_CDROM_DVD_PLUS_R=1 ID_CDROM_DVD_PLUS_RW=1 ID_CDROM_DVD_PLUS_R_DL=1 ID_CDROM_DVD_R=1 ID_CDROM_DVD_RAM=1 ID_CDROM_DVD_RW=1 ID_CDROM_MRW=1 ID_CDROM_MRW_W=1 ID_FOR_SEAT=block-pci-0000_00_14_0-usb-0_2_1_0-scsi-0_0_0_0 ID_INSTANCE=0:0 ID_MODEL=CDDVDW_SE-S084D ID_MODEL_ENC=CDDVDW\x20SE-S084D\x20 ID_MODEL_ID=1836 ID_PATH=pci-0000:00:14.0-usb-0:2:1.0-scsi-0:0:0:0 ID_PATH_TAG=pci-0000_00_14_0-usb-0_2_1_0-scsi-0_0_0_0 ID_REVISION=TS00 ID_SERIAL=TSSTcorp_CDDVDW_SE-S084D_0j468695-0:0 ID_SERIAL_SHORT=0j468695 ID_TYPE=cd ID_USB_DRIVER=usb-storage ID_USB_INTERFACES=:080250: ID_USB_INTERFACE_NUM=00 ID_VENDOR=TSSTcorp ID_VENDOR_ENC=TSSTcorp ID_VENDOR_ID=0e8d MAJOR=11 MINOR=0 SUBSYSTEM=block SYSTEMD_READY=0 TAGS=:systemd:uaccess:seat: USEC_INITIALIZED=16198574878 glaubitz@ikarus:/sys/block$ Would it be possible to extend sunvdc to display additional fields? In particular, it would be very useful if sunvdc could indicate whether the virtual block device is a regular disk or a CD-ROM drive. Thanks, Adrian -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - glaubitz@xxxxxxxxxx `. `' Freie Universitaet Berlin - glaubitz@xxxxxxxxxxxxxxxxxxx `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913 -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
