September 2002 - Packet Writing - openSUSE Mailing Lists

Waiting for suggestions after initial experiences
by Toth Attila 05 Oct '02

05 Oct '02

First of all I want to say thank you to Jens Axboe, Peter Osterlund, Ben Fennema, and all the others, who participated in making Linux packet writing avaiable. I first tried the patch long time ago without success (when it was maintained by Axboe). Now I had the time to look further into the issues and finally I managed to make it work. I'm using an Acer 4x4x32x IDE-ATAPI CDRW connected to the PIIX4 ide controller of my Abit BP6 motherboard (it also has a hpt366). Let me mention, that this writer shows some strange symtoms: firmware updater programs haven't been able to find the writer on the ide bus for some time and the writer does not care about the specified grabbing and writing speeds, it just operates at approx. 2,5x speed. The latter one doesn't refers to packet writing, when it seems to keep the desired speed. It can handle rewritable discs well in Windows (using InCD or DirectCD). Once (in the past: 2 year ago+) it created some disks with errors. I tried to stress it with writing 10 CDs to crash it totally before I lost the guarantee. It created dosens of CDs after that without errors. Now I continue with my recent experiences. I compiled the kernel with packet-2.4.19-2.patch. My kernel based on a 2.4.19-rc1 gentoo kernel with some additional patches from Andrea Arcangeli. Because it is an -ac series kernel from the packet point of view, I modified slightly the patch based on the information appeared on this mailing list. I'm using udftools-1.0.0b2. The writer resides on the PIIX4, because it is a more stable product than the hpt366 IMHO. I didn't tune the writer with hdparm. It didn't change anything. Modules were loaded OK. When I tried to quick-setup the disk with cdrwtools, everything seemed to be fine. It produced a CD which I couldn't mount. Some I/O errors showed up and it said that no UDF filesystem could be found. After some retries I tried to format the disk with mkudffs. At the first attempt it flooded the screen with read errors. When I repeated this step it produced further 'just' to I/O errors. I succesfully mounted this CD and copied files on it (full) and deleted them without errors. After I mounted a DirectCD-formatted disk, I faced with a bounch of WRITE errors, and an irq timeout followed by an ATAPI reset. The best of all: I could use the Linux-formatted CDRW disk by DirectCD and InCD! (Some DirectCD formatted disk can't be used on specific InCD machines...) I suspect, that my writer may not be reliable at 4x speed. The kernel recognise it as a 4x rewriter. The disks used are brand new (Linux-formatted) or known to be good (Windows-formatted), and capable of 4x speed. I also met a problem with my new LinuxUDF CDRW. I copied some file using DIrectCD by WinCommander from a CD. The CD contained old-DOS fashioned files and directories (8.3, all uppercase). I've also copied some other files on the disk at the same time. I can see the copied CD contents only under Windows, while the other files can also be seen on Linux. My questions: 1. Why is it, that the windows formats the disk slightly bigger? Size does not matter for me, but it is a clear difference I've found between the disks. It doesn't bother me, if it is not related to the above presented problems. 2. What can be the reason, that quick-setuped disk couldn't be mounted, but mkudffs-formatted could? 3. What sould I do with these I/O errors (and also with WRITE and read errors possibly related to them)? May I ignore the I/O errors during mkudffs, because the resulted disk seems to be fine? 4. Should I specify lower writing speed somehow, or I should cure my paranoidity? 5. Maybe there are some timing issues with this drive related to the irq handling and so. What should I do? 6. What can be a reason my latter presented problem? Feature request: 1. The possibility to set writing speed explicitly. Thank you rof your attention, Attila Toth --- Attached files: 1. screen-sr0 : screen output using ide-scsi with /* comments */ 2. kernel-sr0 : kernel log digest using ide-scsi with /* comments */ 3. screen-hde : screen output using ide-cd with /* comments */ 4. kernel-hde : kernel log digest using ide-cd with /* comments */

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Virtual allocation table
by Sridhar.D 29 Sep '02

29 Sep '02

hi all, i am trying packet writing on a CD-R. whats the concept of writing the VAT. should the VAT be written everytime a packet is written or the VAT should be written at the end, when the disk is ejected. iam regulary updating the VAT as and when entries are added or deleted. If this question does not correspond to the exact requirements of this group, pls forgive me and ignore this mail. awaiting ur suggestion. D.Sridhar

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by Joe Driscoll 21 Sep '02

21 Sep '02

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Yamaha CRW-F1
by Stephen Mollett 21 Sep '02

21 Sep '02

Hi, Does anyone know if Yamaha's new CRW-F1 (44W/24RW) works with pktcdvd? My old CRW4416S is getting a bit cranky and I'm thinking about getting the internal SCSI version of the F1 to replace it. (I've always found Yamaha writers to be reliable and to produce high-quality discs; my experience with other makes has been rather unfavourable.) (The alternative that I'm considering would be a Firewire Sony DRX-120L DVD+RW but I've heard that there are problems getting this to work with Linux at all.) Thanks, Stephen

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How to burn UDF files
by Stephen Liu 20 Sep '02

20 Sep '02

Hi All Folks, I just join this list and package writing/reading in Linux environment is completely new to me Has any folk on the list having experience in installing and using the udf packages from "souceforge" I have them installed but don't know how to proceed. Nor have any idea whether there are mistakes committed during installationn. Hereinafter is my tests RH7.3 ===== KOnCD and Xcdroast work properly. Tests performed as follows: ==================== Have following packages downloaded udf-0.9.6.tar.gz udftools-1.0.0b2.tar.gz and saved them to /tmp/UDF # cd /tmp/UDF/ # tar -zxvf udf-0.9.6.tar.gz # cd /tmp/UDF/udf-0.9.6 [root@localhost udf-0.9.6]# ./configure;make udf.o;make install;make patch - snip - Extracting kernel symbol versions... Kernel configuration options: Symmetric multiprocessing support is disabled. Max physical memory in MB is 1024 Advanced Power Management (APM) support is disabled. Networking support is enabled. Module version checking is enabled. /usr/src/linux/include/asm does not exist! To fix, do 'ln -s asm-i386 asm' in /usr/src/linux/include. make: *** [.prereq.ok] Error 1 # cd / # depmod -a # modprobe udf cd /tmp/UDF [root@localhost UDF]# tar -zxvf udftools-1.0.0b2.tar.gz # cd udftools-1.0.0b2/ [root@localhost udftools-1.0.0b2]# ./configure;make; make install Went through without complaint Insert a blank new CD-RW to CDWriter AS ROOT (super root) # mount -t udf /dev/scd0 /mnt mount: block device /dev/scd0 is write-protected, mounting read-only mount: wrong fs type, bad option, bad superblock on /dev/scd0, or too many mounted file systems # mount -t udf -o loop image /mnt image: No such file or directory Kindly shed me some light and advise whether I can operate this software in graphic mode Thanks in advance. Stephen Liu

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ScanMail Message: To Recipient virus found and action taken.
by Administrator＠suse.de 18 Sep '02

18 Sep '02

ScanMail for Microsoft Exchange has detected virus-infected attachment(s). Sender = Daniel Blankensteiner Recipient(s) = packet-writing(a)suse.com Subject = Fw: arbejde Scanning Time = 09/18/2002 08:54:59 Engine/Pattern = 6.150-1001/351 Action on virus found: The attachment arbejde.mpg .dat contains WORM_YAHA.E virus. ScanMail has Deleted it. Warning to recipient. ScanMail has detected a virus.

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Re: Fw: arbejde
by Christopher Mahmood 17 Sep '02

17 Sep '02

OK, non-text or gpg/pgp attachments are now removed from list postings. Sorry about that. -- -ckm

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Fw: arbejde
by Daniel Blankensteiner 17 Sep '02

17 Sep '02

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Re: Problem with Tekram controller
by Kirill Messel 17 Sep '02

17 Sep '02

Hi all, I've checked: CDRW is insearted, Properly formated, i have checked it on Windows and tried to mount as udf disk on Linux. It looks udf file system. pktcdvd module is loaded. I can mount this CDRW as udf to read/write. And copy file to disk passed. But if i try to umount i have got a error, after that CD looks like not formated. What is the problem. May be Tekram controller could not work with udf system? Kirill > >You have one of follows: > > - disk is not inserted in CDRW drive > - not properly formatted UDF disk (check disk with chkudf utility) > - not loaded pktcdvd module (to list dynamic loaded modules rub lsmod) > - bad record in /etc/fstab >

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Anyone italian?
by Germano Rizzo 13 Sep '02

13 Sep '02

Hi, my name is Germano Rizzo and I'm new of this list. Hello all! :) I am part of an italian Linux online magazine, the Pluto Journal; I'm writing now an article on the new packet writing capabilities of Linux. Is there anyone italian, here, that could read my work and correct it? Thank you very much, Mano :) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Germano Rizzo - mano(a)pluto.linux.it ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Pluto FSUG member - www.pluto.linux.it Linux Registered User #120637 PGP/GPG Public Key at http://gnomermind.sf.net/pubkey.txt ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ An rud is annamh is iontach ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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