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Greetings -

A few days ago I purchased a Sony CRX195E1 (labeled as CRX195A1, but I think they're basically the same drive), which is a 40x12x48x Powerburn-enabled CD-RW. Although I have been able to get packet-writing to work in Linux, I haven't been able to get it to work in an entirely error-free manner. Examples are:

-If I delete a directory on the CD-RW (say, dir1) in Windows, I am unable to create a directory of that name in Linux (mkdir claims that a directory of

On Mon, Jul 22, 2002 at 11:40:38AM -0700, Fritz Lnes wrote: that

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name already exists). -For some reason, at least one file (possibly more) gives me 'access denied' errors, despite the utter lack of restrictions put on the thing. For instance, if I were to do 'ls *.jpg' it would stick in the middle of the output 'myfile.jpg - Access Denied'. Furthering this problem, after deleting and replacing this file in Windows, I not only did not regain access, but I got TWO of these errors on the SAME filename. -The CD-RW's drive light is almost ALWAYS on when I have the CD-RW mounted. -On one disc, the drive writing time was exceedingly slow when writing lots of little files. However, I suspect that the disc may have been bad.

If your not using the patch I posted to the list friday-ish (or whatever day it was), every file create causes a read which really kills performance on a CDRW.

After several hours of attempting to apply the patch to several versions of the kernel (2.4.17, 2.4.18, 2.4.19-rc3), I was unable to get a really successful patch; in fact, pktcdvd seems to die when I manage to get it patched like this. I had to make minor modifications to some parts of the code (for instance, in some of the UDF header files I had to comment out the version checks and the things that the preprocessor would have thrown out, and in pktcdvd, I had to remove the reference to the BUG_ON() macro). Are there any tricks/tips/etc. to get this to work? It might be the compiler version, however.

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latest version of the packet-writing patch. In Windows, I'm using B's Clip 3.24 (which was what came with the drive).

Is anything showing up in the kernel log? (run dmesg to check).

I've never used B's Clip 3.2 so I don't know what its doing when it deletes a file.

You could try recreating the problem with as small a sample set as possible, pull only the used data off the disc, compress it, and send it too me and I can take a look and see if I can

Nothing particularly noteworthy has shown up on dmesg, except for one error that I have not yet had a chance to try to reproduce. Unfortunately, it was lost to a subsequent crash. figure out what's

going wrong.

I'm working on that at present... I'll send it to you if I can create one.

You could also run the UDF verifier on the disc and see what it has to say.

Actually, I did. It had some unusual results. The file that was inaccessable had a checksum error of some sort; I am uncertain if it was an error with UDF or with pktcdvd. It also reported the directories that I could not create over as being there, but with the filenames similar to '[DELETED] r24', r24 being the directory's name beforehand. It almost seems like the thing is being left there intentionally by the Windows program, perhaps for ease in an undeletion attempt. If you'd like to see the pertinant parts of the output, I'll attempt to provide them ASAP.

Ben

In order to see if it was the hardware, pktcdvd, or UDF, I attempted to access the disc as an EXT2 partition. It seemed to work well enough, until I attempted to delete a file; then the space on the disc was not freed up (although the files were deleted) and the system locked up hard on shutdown. Any thoughts on what this might mean? Furthermore, are EXT2 partitions on CD-RW discs supposed to allow deletion? I've still had no luck with the drive-light-always-on problem, at least while using UDF. Chances are, I'm going to exchange the drive on Friday to rule out any possibility of hardware errors. My appologies for the lateness of this reply; things have been coming up, and I've been having problems with the Linux half of my system, mostly due to tinkering trying to get this thing to work. I've likely unintentionally omitted some details due to distraction. I'll e-mail the list (or individuals) once I can include these details. Thank you, once again, for any help you can provide. __________________________________________________ Do You Yahoo!? Yahoo! Health - Feel better, live better http://health.yahoo.com