On Fri, 2008-06-06 at 16:06 +0200, Geert Uytterhoeven wrote: > Hi all, > > When mounting a CD/DVD more than 30 seconds after inserting it, and reading > from it, we get: > > attempt to access beyond end of device > sr0: rw=0, want=371932, limit=371928 > Buffer I/O error on device sr0, logical block 92982 > attempt to access beyond end of device > sr0: rw=0, want=371936, limit=371928 > Buffer I/O error on device sr0, logical block 92983 > attempt to access beyond end of device > sr0: rw=0, want=371940, limit=371928 > Buffer I/O error on device sr0, logical block 92984 > attempt to access beyond end of device > sr0: rw=0, want=371944, limit=371928 > Buffer I/O error on device sr0, logical block 92985 > attempt to access beyond end of device > sr0: rw=0, want=371948, limit=371928 > Buffer I/O error on device sr0, logical block 92986 > ... > > It can be reproduced on a PS3 with busybox userland using: > > # Insert first CD > $ mount /dev/sr0 /mnt > $ ls -R /mnt > $ umount /mnt > $ eject > # Remove first CD > > # Insert second CD > # Wait at least 30 seconds > $ mount /dev/sr0 /mnt > $ tar cf /dev/null /mnt > > It does not happen when mounting the second CD within 30 seconds after > inserting it, which is consistent with > > #define SR_TIMEOUT (30 * HZ) > > I can't seem to reproduce it with a Debian or Fedora Core 6 userland. > > The problem is present in 2.6.25. > 2.6.24 is OK. Hmm ... how are you preventing HAL from automatically mounting the CD? Also, in the two different situations, what does cat /sys/block/sr0/size (assuming your cd is sr0) give you? My first theory is an incorrect size propagating from something. James -- 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
