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
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