RE: Can not read UDF CD

From: David Balazic
Date: Thu Jul 29 2004 - 10:47:26 EST

Next message: Dimitri Sivanich: "Re: Oops in find_busiest_group(): 2.6.8-rc1-mm1"
Previous message: Mark Watts: "Re: mke2fs -j goes nuts on 3Ware 8506-4LP"
In reply to: Pat LaVarre: "Re: Can not read UDF CD"
Next in thread: David Burg: "RE: Can not read UDF CD"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

> From: Pat LaVarre[SMTP:p.lavarre@xxxxxxxx]
>
> David B:
>
> /// In short,
>
> I suggest quickly trying the mount -o lastblock= and anchor= udf.ko
> options described at:
>
> http://lxr.linux.no/source/Documentation/filesystems/udf.txt?v=2.6.5
>
> else working thru til able to try the phgfsck described at my page:
>
> http://udfko.blog-city.com/read/577369.htm
>
> If you do post the phgfsck report on the web, I'll gladly link to it.
>
I attach the "udf_test -scsi 1:0" output.

> /// At length, in Seven parts ...
>
> /// 1) Similarly
snip

> /// 2) Where
>
> What kind of cable do you use, what is your device name, what is your
> mount point?
>
cable is 80 wire ATA-66
dev is /dev/cdrom2 -> /dev/hdc
/mnt/cdrom2

> Til I know, I will cover both USB and PATAPI and pretend you want to
> mount /dev/scd0 at /mnt/scd0.
>
> /// 3) -o lastblock="$n"
>
> Up in user land, my workaround was:
>
> n="`dc -e \"\`sudo blockdev --getsize /dev/scd0\` 512 * 2048 / 1 - p\"`"
> sudo mount -r -o lastblock="$n" /dev/scd0 /mnt/scd0
>
Will try...

> /// 4) patch -p1 ...
>
> To recover the feature:
>
> sudo mount -r /dev/scd0 /mnt/scd0
>
> for such unfriendly discs, I web-published the patch quoted below to the
> patches-udf.lastblock package of http://iomrrdtools.sourceforge.net/
Wil try ...

> /// 5) -o anchor=...
>
> If -o lastblock="$n" doesn't work for you, then one more blind try is -o
> anchor="$n" i.e.
>
> n="`dc -e \"\`sudo blockdev --getsize /dev/scd0\` 512 * 2048 / 1 - p\"`"
> sudo mount -r -o anchor="$n" /dev/scd0 /mnt/scd0
>
> Please note -o anchor is arguably reckless except when combined with -r.
>
> /// 6) phgfsck
>
> If neither blind try works for you, then to make sense of the disc you
> can try phgfsck. For example, here, I see:
>
> $ sudo phgfsck -scsi /dev/sg0 | grep 'AVDPs at'
> Number of AVDPs: 2, AVDPs at N-256, N
> $
>
> Seeing "AVDP ... at ... N" tells me to try what I mentioned above:
>
> n="`dc -e \"\`sudo blockdev --getsize /dev/scd0\` 512 * 2048 / 1 - p\"`"
> sudo mount -r -o anchor="$n" /dev/scd0 /mnt/scd0
>
> /// 7) reconfiguring Linux to permit phgfsck
>
> http://www.extra.research.philips.com/udf/
> is the Philips page that offers the phgfsck, aka the "Philips UDF
> Verifier".
>
> My clarification of that page is:
>
> http://udfko.blog-city.com/read/577369.htm
>
> Philips deserves nothing but kudos for donating the phgfsck to improve
> UDF interoperability worldwide ... except the fact remains they haven't
> chosen to release their copyright under a license approved as open
> source by such authorities as sourceforge.net.
>
> Consequently, the phgfsck can be unusually hard to use in Linux.
> Specifically, it does Not incorporate any of the better SCSI pass thru
> libraries. Privately, as yet I've heard from Two employees of different
> corporations who privately requested and privately were denied
> permission to donate code into the phgfsck, because its source is partly
> closed.
>
> First, as yet with the phgfsck, you have to substitute an sg name for
> the regular dev name, even when running 2.6.
>
> To discover your sg name, you can try each of /dev/sg* to see what
> happens, or you can download yet another tool, such as sg_scan -i or my
> own plscsi -w, found at http://members.aol.com/plscsi/linux/
>
> In theory `phgfsck -showscsi` will give you device names, but for me
> that query doesn't work reliably. Trying here just now in
> 2.6.8-rc2-bk7, it hangs. In the past, I've seen it miss names.
>
> Often you need root privilege to discover the sg name.
>
> You will probably have an sg name to find only if your kernel has a
> drivers/scsi/sg.ko and your device name was among the /dev/scd*
>
> Else you might have to get into substituting ide-scsi.ko for ide-cd.ko,
> especially if your device name was among the /dev/hd*. linux-scsi
> speaks occasionally of the issues such substitutions raise.
>
> Pat LaVarre
> http://iomrrdtools.sourceforge.net/
> http://udfko.blog-city.com/
>
> --- From:
> http://sourceforge.net/project/showfiles.php?group_id=101444&package_id=12
> 5426
>
> See also: Readme.txt
> ... Copyright (c) 2004 Iomega Corp
> ... free software ...
> ... GNU General Public License as ... either ... or ...
> ...
>
> diff -urp linux-2.6.8-rc2-bk7/fs/udf/lowlevel.c
> linux-2.6.8-rc2-bk7-pel/fs/udf/lowlevel.c
> --- linux-2.6.8-rc2-bk7/fs/udf/lowlevel.c 2004-06-15
> 23:19:36.000000000 -0600
> +++ linux-2.6.8-rc2-bk7-pel/fs/udf/lowlevel.c 2004-07-28
> 14:46:02.373806296 -0600
> @@ -73,9 +73,9 @@ udf_get_last_block(struct super_block *s
> struct block_device *bdev = sb->s_bdev;
> unsigned long lblock = 0;
>
> - if (ioctl_by_bdev(bdev, CDROM_LAST_WRITTEN, (unsigned long)
> &lblock))
> - lblock = bdev->bd_inode->i_size >> sb->s_blocksize_bits;
> -
> + if (!ioctl_by_bdev(bdev, CDROM_LAST_WRITTEN, (unsigned long)
> &lblock))
> + return lblock;
> + lblock = bdev->bd_inode->i_size >> sb->s_blocksize_bits;
> if (lblock)
> return lblock - 1;
> else
> diff -urp linux-2.6.8-rc2-bk7/fs/udf/super.c
> linux-2.6.8-rc2-bk7-pel/fs/udf/super.c
> --- linux-2.6.8-rc2-bk7/fs/udf/super.c 2004-07-28
> 10:36:35.928051888 -0600
> +++ linux-2.6.8-rc2-bk7-pel/fs/udf/super.c 2004-07-28
> 14:45:45.356393336 -0600
> @@ -1562,6 +1562,9 @@ static int udf_fill_super(struct super_b
> goto error_out;
> }
>
> + if (!UDF_SB_LASTBLOCK(sb)) {
> + UDF_SB_LASTBLOCK(sb) = udf_get_last_block(sb);
> + }
> udf_find_anchor(sb);
>
> /* Fill in the rest of the superblock */
>
> <<report_1_stein.txt>>
UDF Conformance Testing Application
(c) Koninklijke Philips Electronics N.V. 1999-2004
Application version: 1.1r0
UCT Core version : 1.1r0

Command:
udf_test
Generic options parsing:

Medium info options parsing:

Device options parsing:
-scsi 1:0

host adapter: 1
SCSI Id. : 0

INQUIRY command:
Vendor identification : TEAC
Product identification: CD-540E
Product revision level: 3.0A
INQUIRY/ANSI Version : 0
Version Descriptors : 0x2E00 0x3100 0x7200 0x3000 0x5C00 0x6200 0x6900 0x6E00
Peripheral Device Type: CD/DVD Device

TEST UNIT READY command:
Device ready

READ CAPACITY command:
Highest valid block number in last complete session: 60071
Block Size : 2048

GET CONFIGURATION command: ..
fails

MODE SENSE command:
Medium Type: 36 (= 0x24) - overwritable

READ DISC INFORMATION command: .....
fails, skip read track info

Created SCSI device
host adapter id : 1
scsi id : 0
last valid block : 60071
block size : 2048
packet length : 0
nmb of sessions : 1
verify session : 1
session starts : 0
medium WR type : overwritable
medium SE type : unknown

=> ignore device medium WR type: overwritable

Inspect 1 block for presence of VAT or AVDP
starting at block: 60071

==> read cache: max 16 buffers of 64 sectors, total 2048 Kb
err: .
60071 1 error block read

Inspect 456 blocks for presence of VAT or AVDP
starting at block: 59615

59615 455 ok blocks read
59815 AVDP (255 times at 59815 thru 60069)
err: .
60070 1 error block read

last AVDP at 60069 (N-2), AVDP at 59815 (N-256)

Verification start medium info
last valid block : 60071
block size : 2048
packet length : 0
nmb of sessions : 1
verify session : 1
session starts : 0
medium WR type : unknown
medium SE type : unknown

====> Start verification
Start time : 2004-07-29 17:26:54 +02:00 (east of UTC)
Verbose level: 100
Message limit: 20
Fake read enabled
Read cache enabled
Initial UDF Revision range: 1.02 thru 2.50

====> Volume Structure verification
Read Volume Recognition Sequence
16 read block
BEA01
Start of Extended Area
17 read block
NSR02
18 read block
TEA01
19 read block
End of Extended Area
End of Volume Recognition Sequence

==> Changed UDF Revision range from: 1.02 thru 2.50 to: 1.02 thru 1.50
- because of "NSR descriptor"

Reading Volume Information
256 read block
AVDP at 256
First Tag Serial Number: 1
59815 read block
AVDP at N-256
AVDP error: Volume Descriptor Sequence Extent not equal to
- the one read in first AVDP
- Main: length,location: 32768, 30654 expected: 32768, 32
- Reserve: length,location: 32768, 30670 expected: 32768, 48
- Using first AVDP
60071 read block
60071 Note: READ ERROR
No AVDP at N

Number of AVDPs: 2, AVDPs at 256, N-256

====> Read Main VDS extent: 32, length: 32768
32 read block
PVD VDS Number: 0
PVD Recording Time: 2004-07-27 17:14:49 +01:00
PVD Volume Identifier : "VNC"
PVD Volume Set Identifier: "41067169"
==> PVD 344 New Entity Identifier (regid):
Application Entity Identifier
<empty>
==> PVD 388 New Entity Identifier (regid):
Implementation Entity Identifier
Identifier : "*AHEAD Nero"
OS Class : #00 Undefined
OS Identifier : #00 Undefined
Implementation Use : #05 #00 #00 #00 #00 #00
==> Add PVD to VDS info
33 read block
IUVD VDS Number: 1
IUVD EntityID Identifier: "*UDF LV Info"
==> IUVD 20 New Entity Identifier (regid):
UDF Entity Identifier
Identifier : "*UDF LV Info"
UDF revision : 1.02
==> Changed UDF Revision range from: 1.02 thru 1.50 to: 1.02 only
- because of "UDF EntityID UDF revision"
OS Class : #05 Windows 9x
OS Identifier : #00 Windows 9x - Generic
Warning: OS Class Windows 9x was introduced in UDF 1.50
- Current UDF revision range: 1.02 only
UDF IUVD Logical Volume Identifier : "VNC"
UDF IUVD LVInfo1: <undefined>
UDF IUVD LVInfo2: <undefined>
UDF IUVD LVInfo3: <undefined>
==> Add IUVD to VDS info
34 read block
PD VDS Number: 2, Partition Number: 0
==> PD 24 New Entity Identifier (regid):
Application Entity Identifier
Identifier : "+NSR02"
PD: No Unallocated/Freed Space Set in Partition Header Descriptor
==> PD 196 New Entity Identifier (regid):
Implementation Entity Identifier
Identifier : "*AHEAD Nero"
OS Class : #05 Windows 9x
OS Identifier : #00 Windows 9x - Generic
Warning: OS Class Windows 9x was introduced in UDF 1.50
- Current UDF revision range: 1.02 only
==> Add PD to VDS info, partition number: 0
35 read block
LVD VDS Number: 3
LVD Logical Volume Identifier: "VNC"
==> LVD 216 New Entity Identifier (regid):
Domain Entity Identifier
Identifier : "*OSTA UDF Compliant"
UDF revision : 1.02
Domain flags : #03 Hard and Soft Write-Protect
==> Add LVD to VDS info
36 read block
USD VDS Number: 4, nmb of ADs: 0
==> Add USD to VDS info
37 read block
TD

====> Read Reserve VDS extent: 48, length: 32768
48 read block
PVD VDS Number: 0
PVD Recording Time: 2004-07-27 17:14:49 +01:00
PVD Volume Identifier : "VNC"
PVD Volume Set Identifier: "41067169"
==> Add PVD to VDS info
49 read block
IUVD VDS Number: 1
IUVD EntityID Identifier: "*UDF LV Info"
UDF IUVD Logical Volume Identifier : "VNC"
UDF IUVD LVInfo1: <undefined>
UDF IUVD LVInfo2: <undefined>
UDF IUVD LVInfo3: <undefined>
==> Add IUVD to VDS info
50 read block
PD VDS Number: 2, Partition Number: 0
PD: No Unallocated/Freed Space Set in Partition Header Descriptor
==> Add PD to VDS info, partition number: 0
51 read block
LVD VDS Number: 3
LVD Logical Volume Identifier: "VNC"
==> Add LVD to VDS info
52 read block
USD VDS Number: 4, nmb of ADs: 0
==> Add USD to VDS info
53 read block
TD

====> Check equivalence of Main VDS and Reserve VDS

==> Main and Reserve VDS are equivalent

====> Check Main VDS. Summary:
PVD VDS Number 0
LVD VDS Number 3
USD VDS Number 4
PD VDS Number 2
IUVD VDS Number 1 ID: "*UDF LV Info"
5 prevailing VDS descriptors found

==> Using Main VDS

====> Checking Logical Volume: "VNC"

Prevailing Partition Descriptors:
pNmb: 0, start: 257, length: 18708, access: read-only

LVD Partition Maps:
p0: Physical Partition Map (Type 1), pNmb: 0

==> Changed medium WR type from unknown to read-only
- because of partition access type
==> Changed medium SE type from unknown to nonsequential
- because of no Virtual Partition found

Mounted Partitions:
- p0: Physical, pNmb: 0, blocks: 257 thru 18964, access: read-only
- logical blocks: 0 thru 18707

Read LVID sequence extent: 64, length: 4096
64 read block
LVID - Close
LVID Recording Time: 2004-07-27 17:14:49 +01:00
65 read block
TD

Next UniqueID: #0000000000000102,
from LVID Logical Volume Header Descriptor.

==> p0: read Unallocated or Freed Partition Space Sets
p0: No partition Space set found
--

Read FSD sequence extent: (0,p0), length: 2048

257 read block
FSD FSN: 0, FSDN: 0
FSD Logical Volume Identifier: "VNC"
FSD File Set Identifier : "VNC"
FSD Copyright File Identifier: <undefined>
FSD Abstract File Identifier : <undefined>

====> Volume identifiers summary:

PVD: Volume Identifier [32]: "VNC"
PVD: Volume Set Identifier [128]: "41067169"
LVD: Logical Volume Identifier [128]: "VNC"
IUVD: Logical Volume Identifier [128]: "VNC"
FSD: Logical Volume Identifier [128]: "VNC"
FSD: File Set Identifier [32]: "VNC"

====> File Structure verification

read Root Directory
258 read block
FE file type DIR name: <root>
cnt: extent type, size, location,part, body, total alloc
1: long_ad 0 288 2 0 288 2048

==> (max) depth: 1 1 Expand directory: <root>

Read FIDs
259 read block
Verify FIDs
FID cid: name: /<parent FID>, refers to: <root>
FID cid: 16 name: "patch-2.6.8-rc1-rc2.bz2"
FID cid: 16 name: "patch-2.6.8-rc1.bz2"
FID cid: 16 name: "linux-2.6.7.tar.bz2"
Add FIDs to directory hierarchy and read FEs
260 read block
FE file type FILE name: "patch-2.6.8-rc1-rc2.bz2"
cnt: extent type, size, location,part, body, total alloc
1: long_ad 0 543778 7 0 543778 544768
261 read block
FE file type FILE name: "patch-2.6.8-rc1.bz2"
cnt: extent type, size, location,part, body, total alloc
1: long_ad 0 2662225 273 0 2662225 2662400
262 read block
FE file type FILE name: "linux-2.6.7.tar.bz2"
cnt: extent type, size, location,part, body, total alloc
1: long_ad 0 35092228 1573 0 35092228 35092480

Directory: <root>

.d.p......:..r.x:..r.x:..r.x DIR 1 2004-07-27 16:14 288 /<parent FID>, refers to: <root>
..........:..r.x:..r.x:..r.x FILE 1 2004-07-27 10:09 543778 "patch-2.6.8-rc1-rc2.bz2"
..........:..r.x:..r.x:..r.x FILE 1 2004-07-27 10:08 2662225 "patch-2.6.8-rc1.bz2"
..........:..r.x:..r.x:..r.x FILE 1 2004-07-27 10:10 35092228 "linux-2.6.7.tar.bz2"

file body read: "patch-2.6.8-rc1-rc2.bz2"
264 fake read 266 blocks
file body read: "patch-2.6.8-rc1.bz2"
530 fake read 1300 blocks
file body read: "linux-2.6.7.tar.bz2"
1830 fake read 17135 blocks

Expand complete, max depth 1 for directory: <root>
- 3 files 0 directories
- overall total: 3 files 1 directory

Maximum directory depth: 1

End of directory tree expansion
Excluding deleted FIDs with cleared ICB

====> Testing File Link Count by cross reference of 5 paths.
File Link Count errors will be identified here by the
physical address of the File Entry as well as all
paths identifying the File Entry.
The physical address of the File Entry is also shown in
the informational read block messages above.
Note that errors found here may have been reported before
or may be caused by other previously reported errors.

====> Testing free Volume Space in USD Allocation Descriptors
No free Volume Space defined in USD

====> Build Partition Space Bitmaps.
Also check structures that overlap with partition space.

====> Partition Allocation summary :

===> Physical Partition p0: size 18708 blocks, read-only
blocks 257 thru 18964

==> Compare partition p0 calculated bitmap to recorded Space Set
No Space Set found for partition p0

====> Final LVID verification
Close LVID
==> read-only Physical Partition p0 Space summary:
Partition Length : 18708
LVID Partition Size : 18708
LVID Partition Free Space: 0
Verifier expected free space: 0

==> LVID status summary:
Last modification Time : 2004-07-27 17:14:49 +01:00 (east of UTC)
Last written Developer Id : "*AHEAD Nero"
Next UniqueID : #0000000000000102 => from LVID
max used FE UniqueID : #0000000000000016
Number of Files : 3
Number of Directories : 1
Min UDF Read Revision : UDF 1.02
Min UDF Write Revision : UDF 1.02
Max UDF Write Revision : UDF 1.02
Medium UDF Revision : UDF 1.02

====> Testing uniqueness of relevant UniqueIDs.

Test complete
Elapsed time : 00:03

====> Volume identifiers summary:

PVD: Volume Identifier [32]: "VNC"
PVD: Volume Set Identifier [128]: "41067169"
LVD: Logical Volume Identifier [128]: "VNC"
IUVD: Logical Volume Identifier [128]: "VNC"
FSD: Logical Volume Identifier [128]: "VNC"
FSD: File Set Identifier [32]: "VNC"

====> Encountered EntityID (regid) summary:

count EntityID

3 Domain Entity Identifier
Identifier : "*OSTA UDF Compliant"
UDF revision : 1.02
Domain flags : #03 Hard and Soft Write-Protect
2 UDF Entity Identifier
Identifier : "*UDF LV Info"
UDF revision : 1.02
OS Class : #05 Windows 9x
OS Identifier : #00 Windows 9x - Generic
Warning: OS Class Windows 9x was introduced in UDF 1.50
- Current UDF revision range: 1.02 only
6 Implementation Entity Identifier
Identifier : "*AHEAD Nero"
OS Class : #00 Undefined
OS Identifier : #00 Undefined
Implementation Use : #05 #00 #00 #00 #00 #00
7 Implementation Entity Identifier
Identifier : "*AHEAD Nero"
OS Class : #05 Windows 9x
OS Identifier : #00 Windows 9x - Generic
Warning: OS Class Windows 9x was introduced in UDF 1.50
- Current UDF revision range: 1.02 only
2 Application Entity Identifier
<empty>
2 Application Entity Identifier
Identifier : "+NSR02"

These EntityIDs are also shown above when read for the first time

====> Final verify status report

Final UDF Revision range: 1.02 only

File System info
last valid block : 60071
block size : 2048
packet length : 0
nmb of sessions : 1
verify session : 1
session starts : 0
medium WR type : read-only
medium SE type : nonsequential

Summed file body sizes: 38298231 bytes (36.523 Mbyte)

Error count: 1 total occurrences: 1
Warning count: 2 total occurrences: 9

Disclaimer:
- The number of errors and warnings is an indication only.
- There is no guarantee that the number of errors shown
- by the verifier is correct.

Next message: Dimitri Sivanich: "Re: Oops in find_busiest_group(): 2.6.8-rc1-mm1"
Previous message: Mark Watts: "Re: mke2fs -j goes nuts on 3Ware 8506-4LP"
In reply to: Pat LaVarre: "Re: Can not read UDF CD"
Next in thread: David Burg: "RE: Can not read UDF CD"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]