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| From: | Dalvik Khertel |
| Subject: | [Qemu-devel] DVD-Video on qemu guest |
| Date: | Sat, 6 Oct 2012 18:32:20 +0000 |
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Hi everyone,
I'm stuck with a problem I'm having with qemu that google unfortunately does not provide any satisfactory answers to. I've been trying for weeks to read video discs under qemu (kvm) and was eventually following this guide to get some sort of low-level access to my dvd/bd drive: I'm using the same parameters for the dvd drive that were suggested by Thomas Schmitt on the wiki. When trying to read the video disc on the guest system with e.g. mplayer, I get the following: $ mplayer dvd:/// -dvd-device /dev/vda -novideo MPlayer2 UNKNOWN (C) 2000-2012 MPlayer Team Playing dvd:///. libdvdread: Using libdvdcss version 1.2.12 for DVD access There are 7 titles on this DVD. There are 1 angles in this DVD title. libdvdread: Attempting to retrieve all CSS keys libdvdread: This can take a _long_ time, please be patient libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x0000012b libdvdread: Elapsed time 0 libdvdread: Get key for /VIDEO_TS/VTS_01_1.VOB at 0x0000b65a libdvdread: Elapsed time 0 libdvdread: Get key for /VIDEO_TS/VTS_02_0.VOB at 0x00011b0d libdvdread: Elapsed time 0 libdvdread: Get key for /VIDEO_TS/VTS_02_1.VOB at 0x0001a34e libdvdread: Error cracking CSS key for /VIDEO_TS/VTS_02_1.VOB (0x0001304c)!! libdvdread: Elapsed time 3 libdvdread: Get key for /VIDEO_TS/VTS_03_1.VOB at 0x00213ee4 libdvdread: Error cracking CSS key for /VIDEO_TS/VTS_03_1.VOB (0x0024e61e)!! libdvdread: Elapsed time 0 libdvdread: Found 3 VTS's libdvdread: Elapsed time 3 audio stream: 0 format: ac3 (stereo) language: unknown aid: 128. number of audio channels on disk: 1. number of subtitles on disk: 0 MPEG: Missing video stream!? Contact the author, it may be a bug :( Failed to recognize file format. Exiting... (End of file) $ The drive is actually being accessed, but some of the low-level driver commands seem to get messed up. On the guest, I get a whole bunch of dmesg errors of the kind: [ 581.784723] end_request: I/O error, dev vda, sector 186744 [ 581.784786] Buffer I/O error on device vda, logical block 46686 [ 581.784844] Buffer I/O error on device vda, logical block 46687 [ 581.784900] Buffer I/O error on device vda, logical block 46688 [ 581.784955] Buffer I/O error on device vda, logical block 46689 [ 581.785008] Buffer I/O error on device vda, logical block 46690 [ 581.785061] Buffer I/O error on device vda, logical block 46691 [ 581.785114] Buffer I/O error on device vda, logical block 46692 [ 581.785168] Buffer I/O error on device vda, logical block 46693 [ 581.785221] Buffer I/O error on device vda, logical block 46694 [ 583.236837] end_request: I/O error, dev vda, sector 263928 [ 583.266576] end_request: I/O error, dev vda, sector 263928 [ 583.286492] end_request: I/O error, dev vda, sector 263932 [ 583.309800] end_request: I/O error, dev vda, sector 263928 [ 583.339721] end_request: I/O error, dev vda, sector 263928 And on the host, the dmesg log contains errors like: [1225926.808663] sr 9:0:0:0: [sr0] Result: hostbyte=0x00 driverbyte=0x08 [1225926.808668] sr 9:0:0:0: [sr0] Sense Key : 0x5 [current] [1225926.808673] sr 9:0:0:0: [sr0] ASC=0x6f ASCQ=0x3 [1225926.808676] sr 9:0:0:0: [sr0] CDB: cdb[0]=0x28: 28 00 00 00 b6 5e 00 00 10 00 [1225926.808685] end_request: I/O error, dev sr0, sector 186744 [1225926.810071] Buffer I/O error on device sr0, logical block 46686 [1225926.811469] Buffer I/O error on device sr0, logical block 46687 [1225926.812837] Buffer I/O error on device sr0, logical block 46688 [1225926.812839] Buffer I/O error on device sr0, logical block 46689 [1225926.812841] Buffer I/O error on device sr0, logical block 46690 [1225926.812844] Buffer I/O error on device sr0, logical block 46691 [1225926.812846] Buffer I/O error on device sr0, logical block 46692 [1225926.812848] Buffer I/O error on device sr0, logical block 46693 [1225926.812850] Buffer I/O error on device sr0, logical block 46694 [1225926.828589] sr 9:0:0:0: [sr0] Result: hostbyte=0x00 driverbyte=0x08 [1225926.828594] sr 9:0:0:0: [sr0] Sense Key : 0x5 [current] [1225926.828598] sr 9:0:0:0: [sr0] ASC=0x6f ASCQ=0x3 [1225926.828602] sr 9:0:0:0: [sr0] CDB: cdb[0]=0x28: 28 00 00 00 b6 6e 00 00 20 00 [1225926.828610] end_request: I/O error, dev sr0, sector 186808 [1225926.878777] sr 9:0:0:0: [sr0] Result: hostbyte=0x00 driverbyte=0x08 [1225926.878783] sr 9:0:0:0: [sr0] Sense Key : 0x5 [current] [1225926.878787] sr 9:0:0:0: [sr0] ASC=0x6f ASCQ=0x3 [1225926.878790] sr 9:0:0:0: [sr0] CDB: cdb[0]=0x28: 28 00 00 00 b6 5e 00 00 02 00 [1225926.878798] end_request: I/O error, dev sr0, sector 186744 [1225928.317229] sr 9:0:0:0: [sr0] Result: hostbyte=0x00 driverbyte=0x08 [1225928.317235] sr 9:0:0:0: [sr0] Sense Key : 0x5 [current] [1225928.317239] sr 9:0:0:0: [sr0] ASC=0x6f ASCQ=0x3 [1225928.317242] sr 9:0:0:0: [sr0] CDB: cdb[0]=0x28: 28 00 00 01 01 be 00 00 04 00 [1225928.317251] end_request: I/O error, dev sr0, sector 263928 So, does anyone have a clue why this doesn't work and how I can fix it? Thanks a lot for your help! Cheers, Dalvik |
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