Hiya misc@,
Upfront: if you have something useful to say, CC me, please. I haven't
been on this list in a while, managing to solve my own shit before
having to mail the hivemind, but today I am at a loss.
I have some old DVD backups from the days when backing up to DVD sort
of made sense, and now I'm trying to extricate them from their prison.
Some have broken down and are full of I/O errors or won't mount at all,
but others work fine. The trouble I'm having is that, in those that will
mount, some (but only -some-!) show up with 8.3 (aka short aka DOS)
filenames. I've booted my server into Linux and confirmed that, all else
being equal, Linux gives long file names and OpenBSD doesn't for these
disks, so *the metadata is* there and OpenBSD is doing it wrong.
The head-scratching thing is that for some disks OpenBSD works like
you'd expect, it's only some disks which teleport it to the stone age. I
expect there's something weird about the metadata (having or not having
proper Joliet or Rock Ridge attributes, I guess?), but I'm damned if I
know what they are (I made these disks on Windows, with Nero probably,
before I was on the path of enlightenment). I don't really care the
cause, I just want my data: is there a way to -force- OpenBSD to pay
attention to the long file names? mount_cd9660's -e, -g, -j and -R, much
like the goggles, do nothing. Halpppppppppp!
Here's what cd-info(1) (for the archives: this is from package libcdio)
has to say about a DVD that OpenBSD shows LFNs for:
~$ cd-info --dvd
cd-info version 0.80 i386-unknown-openbsd4.9
Copyright (c) 2003, 2004, 2005, 2007, 2008 R. Bernstein
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
CD location : /dev/rcd0c
CD driver name: OpenBSD
access mode: READ_CD
Vendor : TSSTcorp
Model : CD/DVDW TS-H652D
Revision : GA01
Hardware : CD-ROM or DVD
Can eject : Yes
Can close tray : Yes
Can disable manual eject : Yes
Can select juke-box disc : No
Can set drive speed : No
Can read multiple sessions (e.g. PhotoCD) : Yes
Can hard reset device : Yes
Reading....
Can read Mode 2 Form 1 : Yes
Can read Mode 2 Form 2 : Yes
Can read (S)VCD (i.e. Mode 2 Form 1/2) : Yes
Can read C2 Errors : Yes
Can read IRSC : Yes
Can read Media Channel Number (or UPC) : Yes
Can play audio : Yes
Can read CD-DA : Yes
Can read CD-R : Yes
Can read CD-RW : Yes
Can read DVD-ROM : Yes
Writing....
Can write CD-RW : Yes
Can write DVD-R : Yes
Can write DVD-RAM : Yes
Can write DVD-RW : No
Can write DVD+RW : No
__________________________________
Disc mode is listed as: DVD-R
CD-ROM Track List (1 - 1)
#: MSF LSN Type Green? Copy?
1: 00:02:00 000000 data false no
++ WARN: number of minutes (501) truncated to 99.
170: 99:24:74 447224 leadout (1003 MB raw, 873 MB formatted)
__________________________________
CD An alysis Report
CD-ROM with ISO 9660 filesystem and joliet extension level 3
ISO 9660: 2256224 blocks, label `GOSHA_DOCUMENTS '
Application: NERO BURNING ROM
Preparer :
Publisher :
System :
Volume : GOSHA_DOCUMENTS
Volume Set :
~$
and one that OpenBSD shows SFNs for:
~$ cd-info --dvd
[snip common drive info]
Disc mode is listed as: DVD-R
CD-ROM Track List (1 - 1)
#: MSF LSN Type Green? Copy?
1: 00:02:00 000000 data false no
++ WARN: number of minutes (507) truncated to 99.
170: 99:16:26 446576 leadout (1001 MB raw, 872 MB formatted)
__________________________________
CD Analysis Report
ISO 9660: 2279017 blocks, label `G Save B 6 '
Application: EASY CD CREATOR 6.0 (171) COPYRIGHT (C) 1999-2003 ROXIO,
INC.
Preparer :
Publisher :
System :
Volume : G Save B 6
Volume Set :
UDF: version 0.00
and another:
Disc mode is listed as: DVD-R
CD-ROM Track List (1 - 1)
#: MSF LSN Type Green? Copy?
1: 00:02:00 000000 data false no
++ WARN: number of minutes (505) truncated to 99.
170: 99:57:63 449688 leadout (1008 MB raw, 878 MB formatted)
__________________________________
CD Analysis Report
ISO 9660: 2269454 blocks, label `G Save B 7 '
Application: EASY CD CREATOR 6.0 (171) COPYRIGHT (C) 1999-2003 ROXIO,
INC.
Preparer :
Publisher :
System :
Volume : G Save B 7
Volume Set :
UDF: version 0.00
So, obviously, the clue is that Roxio obviously didn't put Joliet data
on the discs (grrr), which Nero did on the other one. But nevertheless
the long file names *are* there because linux reads them. Is there any
way to make OpenBSD find the long names anyway?
Thanks to all you lovely misc@ers,
-Nick
