http://bugzilla.kernel.org/show_bug.cgi?id=15378 URL: ssenuta@xxxxxxxxx Summary: If packet writing is enabled it causes I/O errors. Product: IO/Storage Version: 2.5 Kernel Version: 2.6.32.8 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: SCSI AssignedTo: linux-scsi@xxxxxxxxxxxxxxx ReportedBy: ssenuta@xxxxxxxxx CC: ssenuta@xxxxxxxxx Regression: No When packet writing is enabled it conflicts with normal cdrom drive operations on a "shared" device. A work around for this problem is to just dis-associate my shared /dev/sr0 drive from /dev/pktcdvd/pktcdvd0 with one of the following commands pktsetup -d 0 /etc/rc.d/init.d/pktcdvd stop ,..Mandriva script I first noticed the problem when I discovered I couldn't play back some commercial movie dvds When packet writing was enabled. Running lsdvd on the problem dvd disc, indicates that the disc could not be read. lsdvd -x /dev/sr0 libdvdread: Using libdvdcss version 1.2.10 for DVD access libdvdread: Can't seek to block 3591534 libdvdread: Can't seek to block 3591534 libdvdread: Invalid IFO for title 2 (VTS_02_0.IFO). Yesterday, while testing a rescue initramfs in (init s) single user mode, I had problems reading a regular (iso9660) cdrom because packet writing was enabled at boot. When I mounted the iso9660 filesystem, I got the following I/O errors: mount -t auto /dev/sr0 /mnt/misc: SR 1:0:0:0: [sr0] Result: Hostbyte=DD_OK Driverbyte=Driver_Sense Sense Key: Illegle Request [current] ADD.Sense: Logical Block Address Out of Range CDB: Read (10): 28 00 00 04 81 20 00 00 02 00 End:Request: I/O ERROR, Dev sr0, sector 1180800 Buffer I/O Error on Device sr0 Logical Block 295200 Buffer I/O Error on Device sr0 Logical Block 295201 I both cases "disabling" packet write allowed my Asus Sata cd-combo drive to operate normally. This is a list of all modules loaded for my "non-udev" initramfs. Things work well but having packet write enabled causes I/O errors when using the common cd-combo drive for regular (non packet) use. Module Size Used by sg 18616 0 isofs 23985 0 pktcdvd 19524 0 sr_mod 9994 0 cdrom 24775 2 pktcdvd,sr_mod usb_storage 29209 0 uhci_hcd 15455 0 ohci_hcd 16452 0 ehci_hcd 26139 0 usbhid 17965 0 nls_iso8859_1 2925 0 nls_cp437 4453 0 nls_cp850 3685 0 vfat 6754 0 msdos 4850 0 fat 35867 2 vfat,msdos Aside from I/O Errors, there is also a problem ejecting a problem iso9660 disc. but again disabling packet write is the work-around. It can be unmounted but you can't open the cd tray. I don't think these problems are specific to only kernel-2.6.32.8 as I noticed similar problem with other kernels. I hope there is a better solution than my work-around or installing two cd-drives. Thank you -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
