Hello Lennart,
Lennart Sorensen wrote:
On Tue, Feb 13, 2007 at 05:35:32PM +0000, Joel Soete wrote:
A small update:
your patch also works against 2.6.20
but seems that open the door to numerous other pb:
1/ pb to burn cd:
# md5sum cd060213.iso
6a1248783a21722816b972aa9bae9d5e cd060213.iso
# ll cd060213.iso
-rwxr-xr-x 1 root root 3213312 Feb 13 2006 cd060213.iso
# dd if=/dev/sr0 bs=1 count=3213312 | md5sum
dd: reading `/dev/sr0': Input/output error
0337e9846d17779945c5c252d4f897f0 -
3129344+0 records in
3129344+0 records out
3129344 bytes (3.1 MB) copied, 36.6963 seconds, 85.3 kB/s
eventhought cdrecord seems to be successfull???
Has that ever worked by any method?
Yes here was some test made some time ago (not so far):
>> On Sun January 8 2006 09:28, you wrote:
> cdrecord: No write mode specified.
> cdrecord: Asuming -tao mode.
> cdrecord: Future versions of cdrecord may have different drive dependent
> defaults.
> cdrecord: Continuing in 5 seconds...
> cdrecord: Warning: Running on Linux-2.6.15-686
> cdrecord: There are unsettled issues with Linux-2.5 and newer.
> cdrecord: If you have unexpected problems, please try Linux-2.4 or Solaris.
> scsidev: '/dev/hdb'
> devname: '/dev/hdb'
> scsibus: -2 target: -2 lun: -2
> Warning: Open by 'devname' is unintentional and not supported.
> Linux sg driver version: 3.5.27
> cdrecord: Warning: using inofficial version of libscg (ubuntu-0.8ubuntu1
> '@(#)scsitransp.c 1.91 04/06/17 Copyright 1988,1995,2000-2004 J.
> Schilling').
> SCSI buffer size: 64512
> cdrecord: Asked for SCSI I/O buffer size 64512 bytes, could only get 20480.
> Cdrecord-Clone 2.01.01a03 (i686-pc-linux-gnu) Copyright (C) 1995-2005
> Joerg Schilling
> NOTE: this version of cdrecord is an inofficial (modified) release of
> cdrecord
> and thus may have bugs that are not present in the original version.
> Please send bug reports and support requests to
> <[email protected]>.
> The original author should not be bothered with problems of this
> version.
>
> TOC Type: 1 = CD-ROM
> Using libscg version 'ubuntu-0.8ubuntu1'.
> atapi: 1
> Device type : Removable CD-ROM
> Version : 0
> Response Format: 1
> Vendor_info : 'PHILIPS '
> Identifikation : 'CDD3610 CD-R/RW '
> Revision : '3.09'
> Device seems to be: Generic mmc CD-RW.
> Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
> Driver flags : MMC SWABAUDIO
> Supported modes: TAO PACKET RAW/R16
> Drive buf size : 786432 = 768 KB
> FIFO size : 4194304 = 4096 KB
> Track 01: data 546 MB
> Total size: 627 MB (62:11.78) = 279884 sectors
> Lout start: 628 MB (62:13/59) = 279884 sectors
> Current Secsize: 2048
> ATIP start of lead in: -11637 (97:26/63)
> ATIP start of lead out: 337350 (75:00/00)
> Disk type: Phase change
> Manuf. index: 3
> Manufacturer: CMC Magnetics Corporation
> Blocks total: 337350 Blocks current: 337350 Blocks remaining: 57466
> Starting to write CD/DVD at speed 2 in real TAO mode for single session.
> Waiting for reader process to fill input buffer ... input buffer ready.
> Performing OPC...
> Starting new track at sector: 0
> Track 01: 546 of 546 MB written (fifo 100%) [buf 94%] 2.0x.
> Track 01: Total bytes read/written: 573198336/573198336 (279882 sectors).
> Writing time: 1878.179s
> Average write speed 2.0x.
> Min drive buffer fill was 94%
> Fixating...
> Fixating time: 167.622s
> cdrecord: fifo had 27989 puts and 27989 gets.
> cdrecord: fifo was 0 times empty and 27757 times full, min fill was 98%.
>
[snip]
> # readcd dev=/dev/hdb f=- | md5sum
> Read speed: 1059 kB/s (CD 6x, DVD 0x).
> Write speed: 353 kB/s (CD 2x, DVD 0x).
> Capacity: 279884 Blocks = 559768 kBytes = 546 MBytes = 573 prMB
> Sectorsize: 2048 Bytes
> Copy from SCSI (0,1,0) disk to file '-'
> end: 279884
> readcd: Success. read_g1: scsi sendcmd: no error
> CDB: 28 00 00 04 45 48 00 00 04 00
> status: 0x2 (CHECK CONDITION)
> Sense Bytes:
> Sense Key: 0xFFFFFFFF [], Segment 0
> Sense Code: 0x00 Qual 0x00 (no additional sense information) Fru 0x0
> Sense flags: Blk 0 (not valid)
> cmd finished after 0.005s timeout 40s
> readcd: Success. Cannot read source disk
> readcd: Retrying from sector 279880.
> ....~~-~~~+~~~-~~~+~~~-~~~+~
>
[snip]
> # ll
> total 1150848
> [...]
> -rw-r----- 1 root root 604082176 Jan 15 12:22 hppa-cvs-20060115.iso
>
> i.e. Block_Number = 604082176 / 2048 = 294962
>
>
> # md5sum hppa-cvs-20060115.iso
> 1141489a8b914daff5cca790882fe277 hppa-cvs-20060115.iso
>
> # dd bs=2048 count=294962 if=/dev/hdb | md5sum
> 294962+0 records in
> 294962+0 records out
> 604082176 bytes (604 MB) copied, 676.972 seconds, 892 kB/s
> 1141489a8b914daff5cca790882fe277 -
>
> ;<)
more same method here:
# dd if=/dev/hdd bs=2048 count=1569 | md5sum
dd: reading `/dev/hdd': Input/output error
1528+0 records in
1528+0 records out
3129344 bytes (3.1 MB) copied, 10.1961 seconds, 307 kB/s
0337e9846d17779945c5c252d4f897f0 -
is the same wrong results.
I have always had to use readcd
along with passing the correct number of sectors on the CD to get a
proper matching image. dd always seems to end up reading some junk past
the end of the disc.
mmm I always used successfully dd method at my office with scsi cdrom drive (even for bootable disk).
2/ (but that should be much more related to scsi api) sdcXX > sdc15 doesn't
works ;-(
# sfdisk -l /dev/sdc
Disk /dev/sdc: 1826 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sdc1 * 0+ 195 196- 1574338+ b W95 FAT32
/dev/sdc2 196 1825 1630 13092975 5 Extended
/dev/sdc3 0 - 0 0 0 Empty
[snip]
/dev/sdc23 881+ 1533 653- 5245191 83 Linux
/dev/sdc24 1795 1825 31 249007+ 83 Linux
I have to ask: What are all those partitions?
It came from an age (see >> brw-rw---- 1 root disk 8, 32 Dec 1 2001 /dev/sdc)
when 15Gb disk was enough to test severall Linux distro ;-)
At the same time I was also working with a distro runing on a x486 100Mhz, a few ram and 128Mb of disk ;-)
# mount /dev/sdc22 /4free
mount: /dev/sdc22 is not a valid block device
# ll /dev/sdc*
brw-rw---- 1 root disk 8, 32 Dec 1 2001 /dev/sdc
brw-rw---- 1 root disk 8, 33 Dec 1 2001 /dev/sdc1
brw-rw---- 1 root disk 8, 42 Dec 1 2001 /dev/sdc10
brw-rw---- 1 root disk 8, 43 Dec 1 2001 /dev/sdc11
brw-rw---- 1 root disk 8, 44 Dec 1 2001 /dev/sdc12
brw-rw---- 1 root disk 8, 45 Dec 1 2001 /dev/sdc13
brw-rw---- 1 root disk 8, 46 Dec 1 2001 /dev/sdc14
brw-rw---- 1 root disk 8, 47 Dec 1 2001 /dev/sdc15
brw-r--r-- 1 root root 8, 48 Feb 13 16:26 /dev/sdc16
brw-r--r-- 1 root root 8, 49 Feb 13 16:26 /dev/sdc17
brw-r--r-- 1 root root 8, 50 Feb 13 16:26 /dev/sdc18
brw-r--r-- 1 root root 8, 51 Feb 13 16:27 /dev/sdc19
brw-rw---- 1 root disk 8, 34 Dec 1 2001 /dev/sdc2
brw-r--r-- 1 root root 8, 52 Feb 13 16:27 /dev/sdc20
brw-r--r-- 1 root root 8, 53 Feb 13 16:27 /dev/sdc21
brw-r--r-- 1 root root 8, 54 Feb 13 16:27 /dev/sdc22
brw-r--r-- 1 root root 8, 55 Feb 13 16:27 /dev/sdc23
brw-r--r-- 1 root root 8, 56 Feb 13 16:27 /dev/sdc24
brw-rw---- 1 root disk 8, 35 Dec 1 2001 /dev/sdc3
brw-rw---- 1 root disk 8, 36 Dec 1 2001 /dev/sdc4
brw-rw---- 1 root disk 8, 37 Dec 1 2001 /dev/sdc5
brw-rw---- 1 root disk 8, 38 Dec 1 2001 /dev/sdc6
brw-rw---- 1 root disk 8, 39 Dec 1 2001 /dev/sdc7
brw-rw---- 1 root disk 8, 40 Dec 1 2001 /dev/sdc8
brw-rw---- 1 root disk 8, 41 Dec 1 2001 /dev/sdc9
Hmm, using udev? Any chance udev incorrectly doesn't check for going
past the end of the block devices allowed (each scsi device has 16
minors assigned, which gives you 15 partitions per device). Last device
for sdc is 8,47. 8,48 (your sdc16) is actually sdd.
Ah ok I wasn't aware.
Thanks for help,
Joel
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