Re: [2.6.20-rc6] pktcdvd doesn't work
From: Fabio Comolli
Date: Wed Jan 31 2007 - 14:18:14 EST
Hi all.
I don't know if this report can be useful, but this problem does not
show up in my setup.
I tried multiple times to copy 10MB files (unmounting and remounting
every time) and verified with md5sum the results and everything is
correct.
Details:
* kernel version: 2.6.20-rc6-g93544047
* driver: ata_piix (only a PATA hard disk and a DVD writer)
* writer: TSSTcorp CD/DVDW TS-L532M HR08 PQ: 0 ANSI: 5).
* udftools version: udftools-1.0.0b3-7.fc6
Regards,
Fabio
On 1/31/07, Jeff Garzik <jgarzik@xxxxxxxxx> wrote:
Luca Tettamanti wrote:
> Hi Jeff, linux-ide,
> I'm having troubles with libata and UDF on RW media. See below.
>
> Il Tue, Jan 30, 2007 at 09:42:34PM +0100, Jan Engelhardt ha scritto:
>> On Jan 30 2007 21:36, Luca Tettamanti wrote:
>>> Il Tue, Jan 30, 2007 at 09:02:20PM +0100, Jan Engelhardt ha scritto:
>>>> On Jan 30 2007 20:53, Luca Tettamanti wrote:
>>>>> Hi,
>>>>> pktcdvd on kernel 2.6.20-rc6 is not working as expected. Any file that
>>>> Did it work previously?
>>> Yup, It used to work but since I rarely use it I don't remember which
>>> kernel version worked for me.
>> Hm, maybe you can take a guess.
>
> I can bisect pktcdvd.c if necessary, but it seems that it's innocent.
>
>>>>> is written to the device is lost after umount.
>>>>> I rarely use pktcdvd but at some point it used to work on my system.
>>>>>
>>>>> This is what I'm doing:
>>>>>
>>>>> root@dreamland:/tmp# cdrwtool -d /dev/scd0 -q
>>>>> scsi 8:0:0:0: CD-ROM HL-DT-ST DVDRAM GSA-4167B DL13 PQ: 0 ANSI: 5
>>>> In case you are using ide-scsi: try without.
>>> It's libata jmicron driver. Shall I try the "old" PATA driver on the
>>> next reboot?
>> If you have lots of CDRs/DVDRs to spare (or a CDRW/DVDRW), every test is
>> welcome.
>
> With the legacy IDE driver it works fine.
> The unit is DVD-RAM capable so the firmware should handle random writes
> fine; I've tried mounting /dev/scd0 rw *without* pktcdvd and I still
> lose files. So I guess it has something to do with libata.
>
> So to recap, after formatting the disk with UDF:
>
> * libata
> - mount with pktcdvd: all files are lost upon umount
> - mount scd0 w/out pktcdvd: all files are lost upon umount
> - write the disk with cdrecord: OK
>
> pktcdvd reports wrong capacity:
>
> pktcdvd: Fixed packets, 32 blocks, Mode-2 disc
> pktcdvd: Max. media speed: 4
> pktcdvd: write speed 4x
> pktcdvd: 0kB available on disc
> UDF-fs INFO UDF 0.9.8.1 (2004/29/09) Mounting volume 'LinuxUDF', timestamp 2007/01/30 18:18 (103c)
>
> * legacy IDE driver
> - mount with pktcdvd: OK
> - mount hda w/out pktcdvd: corrupts FS (duh)
> - write the disk with cdrecord: OK
>
> pktcdvd reports correct capacity:
>
> pktcdvd: writer pktcdvd0 mapped to hda
> pktcdvd: Fixed packets, 32 blocks, Mode-2 disc
> pktcdvd: Max. media speed: 4
> pktcdvd: write speed 4x
> pktcdvd: 551232kB available on disc
> UDF-fs INFO UDF 0.9.8.1 (2004/29/09) Mounting volume 'LinuxUDF', timestamp 2007/01/30 22:19 (103c)
>
> The HW is a JMicron controller:
> 02:00.0 IDE interface: JMicron Technologies, Inc. JMicron 20360/20363 AHCI Controller (rev 02)
> 02:00.1 IDE interface: JMicron Technologies, Inc. JMicron 20360/20363 AHCI Controller (rev 02)
hmmm, definitely interesting behavior.
Would you mind putting this info into a bugzilla.kernel.org report, so
that it is not lost? This bug will likely go into a heavy ATAPI
debugging session that is coming in a few weeks, but not immediately :/
Jeff
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/