how to burn a dvd from guest on physical dvd-writer/-burner

[slotti]

Hello all,

I'm new here and I'm hoping, to get help here. I'm from germany - english is not my native language...

I am using Proxmox VE 1.8.

I want to use a physical dvd-writer to write dvds from inside a guest (WinXP).
How can this be done? The writer in Proxmox VE is found under/as "/dev/sr0". So I tried to put a line in the vm-conf-file:
--> "scsi0: /dev/sr0", but that didn't work. The same with "ide2: /dev/sr0".
When I append "...,media=cdrom", I also cannot access the writer as a writer inside the guest-os.

So please tell me: is this feature I want to implement supported at all?

Thanks for your reply.

Dominik

 

[tom]

does this thread help?
http://forum.proxmox.com/threads/5970-CD-DVD-reader-writer-support-in-Virtual-guest-OS

 

[slotti]

Hello Tom,

many thanks for your reply.

No, it didn't help me much. I've read this threat yesterday on my search. There was only mentioned that I have to use "pci_add" in the "monitor-mode". But I can't figure out, how to use this command or what I should hotplug into the virtual machine.
After googling around in the www I found out that I should use "lspci" to find the right device I want to hotplug. But at this point my knowledge ends... :'-(

Here is the output of "lspci":

vs01:~# lspci
00:00.0 Host bridge: Advanced Micro Devices [AMD] RS780 Host Bridge
00:01.0 PCI bridge: ASUSTeK Computer Inc. RS880 PCI to PCI bridge (int gfx)
00:02.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (ext gfx port 0)
00:09.0 PCI bridge: Advanced Micro Devices [AMD] RS780/RS880 PCI to PCI bridge (PCIE port 4)
00:0a.0 PCI bridge: Advanced Micro Devices [AMD] RS780/RS880 PCI to PCI bridge (PCIE port 5)
00:11.0 SATA controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 SATA Controller [IDE mode]
00:12.0 USB Controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:12.1 USB Controller: ATI Technologies Inc SB7x0 USB OHCI1 Controller
00:12.2 USB Controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:13.0 USB Controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:13.1 USB Controller: ATI Technologies Inc SB7x0 USB OHCI1 Controller
00:13.2 USB Controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 3c)
00:14.1 IDE interface: ATI Technologies Inc SB7x0/SB8x0/SB9x0 IDE Controller
00:14.2 Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA)
00:14.3 ISA bridge: ATI Technologies Inc SB7x0/SB8x0/SB9x0 LPC host controller
00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge
00:14.5 USB Controller: ATI Technologies Inc SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor HyperTransport Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Miscellaneous Control
00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 10h Processor Link Control
01:05.0 VGA compatible controller: ATI Technologies Inc 760G [Radeon 3000]
01:05.1 Audio device: ATI Technologies Inc RS780 Azalia controller
02:00.0 RAID bus controller: Adaptec AAC-RAID (rev 09)
03:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03)
05:06.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet Controller (rev 05)

Is it the "IDE interface" which I should hotplug? My DVD-writer is connected through an IDE-cable and not via SATA. But "dmesg" tells me that it is an SCSI-device...?!

vs01:~# dmesg | grep sr0
sr0: scsi3-mmc drive: 40x/40x writer dvd-ram cd/rw xa/form2 cdda tray
sr 5:0:1:0: Attached scsi CD-ROM sr0

Here is the output of my "pveversion --verbose":

vs01:~# pveversion --verbose
pve-manager: 1.8-15 (pve-manager/1.8/5754)
running kernel: 2.6.32-4-pve
proxmox-ve-2.6.32: 1.8-32
pve-kernel-2.6.32-4-pve: 2.6.32-32
qemu-server: 1.1-30
pve-firmware: 1.0-11
libpve-storage-perl: 1.0-17
vncterm: 0.9-2
vzctl: 3.0.24-1pve4
vzdump: 1.2-11
vzprocps: 2.0.11-2
vzquota: 3.0.11-1
pve-qemu-kvm: 0.14.0-3
ksm-control-daemon: 1.0-5

What to do now?

Dominik

 

[slotti]

Hello,

for all people who are standing in front of the same problem like me...

Here's what I've done so far:

# cat /sys/class/scsi_generic/sg6/device/model
DVDRAM GSA-4120B
# vi /etc/qemu-server/<vmid>.conf

so I added the line:

scsi0: /dev/sg6,media=cdrom

- halt the virtual machine
- start the virtual machine (all described here: http://pve.proxmox.com/wiki/Tape_Dr..._SCSI_pass_through_.28for_Linux_KVM_guests.29)
(I sadly noticed to late that this solution is only for linux guests...)

- the burning software now recognises the writer correct and I am able to access a CD-RW (read, erase, write)

BUT: every access to the physical DVD-writer with a DVD inside ends in an total collapse of the virtual machine (Windows XP)!

So I decided to try an other way to get this working... (as described here: http://pve.proxmox.com/wiki/Tape_Dr..._as_iSCSI_target_.28for_Windows_KVM_guests.29)

# apt-get install iscsi-scst scstadmin
# cat /proc/scsi_tgt/scsi_tgt
Device (host:ch:id:lun or name)                             Device handler
0:0:0:0                                                     dev_disk
0:0:1:0                                                     dev_disk
0:1:0:0                                                     dev_disk
0:1:1:0                                                     dev_disk
0:1:2:0                                                     dev_disk
0:1:3:0                                                     dev_disk
5:0:1:0                                                     none
# dmesg | grep 5:0:1:0
scsi 5:0:1:0: CD-ROM            HL-DT-ST DVDRAM GSA-4120B A117 PQ: 0 ANSI: 5
sr 5:0:1:0: Attached scsi CD-ROM sr0
sr 5:0:1:0: Attached scsi generic sg6 type 5
sr 5:0:1:0: [sg6] CDB: cdb[0]=0xa4, sa=0x0: a4 00 00 00 00 00 00 00 00 08 08 00
sr 5:0:1:0: [sg6] CDB: cdb[0]=0xa4, sa=0x0: a4 00 00 00 00 00 00 00 00 08 08 00
sr 5:0:1:0: [sg6] CDB: cdb[0]=0xa4, sa=0x0: a4 00 00 00 00 00 00 00 00 08 08 00
sr 5:0:1:0: [sg6] CDB: cdb[0]=0xa4, sa=0x0: a4 00 00 00 00 00 00 00 00 08 08 00
sr 5:0:1:0: [sg6] CDB: cdb[0]=0xa4, sa=0x0: a4 00 00 00 00 00 00 00 00 08 08 00
sr 5:0:1:0: [sg6] CDB: cdb[0]=0xa4, sa=0x0: a4 00 00 00 00 00 00 00 00 08 08 00
sr 5:0:1:0: [sg6] CDB: cdb[0]=0xa4, sa=0x0: a4 00 00 00 00 00 00 00 00 08 08 00
sr 5:0:1:0: [sg6] CDB: cdb[0]=0xa4, sa=0x0: a4 00 00 00 00 00 00 00 00 08 08 00

But because of the missing "Device handler" "dev_cdrom" of the "Device 5:0:1:0" I am not able to export the DVD-writer - I think.

Here's my "/etc/scst.conf":

[HANDLER cdrom]
#DEVICE <H:C:I:L>
DEVICE 5:0:1:0
[HANDLER disk]
#DEVICE <H:C:I:L>
[HANDLER vdisk]
#DEVICE <vdisk name>,<device path>,<options>,<block size>
[HANDLER tape]
#DEVICE <H:C:I:L>
[GROUP Default]
#USER <user wwn>
[ASSIGNMENT Default]
#DEVICE <device name>,<lun>
DEVICE 5:0:1:0,0
[TARGETS enable]
#HOST <wwn identifier>
[TARGETS disable]
#HOST <wwn identifier>

And here is the error:

vs01:~# /etc/init.d/scst reload
Reloading SCST configuration failed!

How can I get this missing "Device handler" ("dev_cdrom") into Proxmox Debian to export the DVD-writer via iSCSI?

Dominik

 

[slotti]

yes yes - here we go...

vs01:~# lsmod | grep scst_cdrom
vs01:~# modprobe scst_cdrom
vs01:~# cat /proc/scsi_tgt/scsi_tgt
Device (host:ch:id:lun or name)                             Device handler
0:0:0:0                                                     dev_disk
0:0:1:0                                                     dev_disk
0:1:0:0                                                     dev_disk
0:1:1:0                                                     dev_disk
0:1:2:0                                                     dev_disk
0:1:3:0                                                     dev_disk
5:0:1:0                                                     dev_cdrom
vs01:~# vi /etc/modules

add the line:

scst_cdrom

connect through iscsi-initiator to the targeted dvd-writer and enjoy...

= )

Dominik

 

[tom]

thanks for feedback, looks fine. can you summarize your findings in a wiki page, its already created but someone needs to work it out? thanks!

See http://pve.proxmox.com/wiki/CD/DVD_Writer

 

[slotti]

done!