Tejun Heo wrote:
* and the error log when a CD can't be read looks like this (dmesg tail)
[ 227.213893] sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE,SUGGEST_OK
[ 227.213914] sr 1:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 227.213926] Info fld=0x2e81
[ 227.213930] sr 1:0:0:0: [sr0] Add. Sense: L-EC uncorrectable error
[ 227.213942] end_request: I/O error, dev sr0, sector 47616
[ 227.213954] Buffer I/O error on device sr0, logical block 5952
[ 234.227424] sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE,SUGGEST_OK
[ 234.227446] sr 1:0:0:0: [sr0] Sense Key : Medium Error [current]
[ 234.227457] Info fld=0x2e81
[ 234.227461] sr 1:0:0:0: [sr0] Add. Sense: L-EC uncorrectable error
[ 234.227473] end_request: I/O error, dev sr0, sector 47616
[ 234.227484] Buffer I/O error on device sr0, logical block 5952
[ 241.163142] sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK
driverbyte=DRIVER_SENSE,SUGGEST_OK
...
Those errors shouldn't have much to do with how the transport is
configured. These are the drive failing to read the media and these
errors can be quite indetermininstic, so it's possible that the
pattern really isn't a pattern but then again the drive doesn't seem
to have much problem being peculiar. Can you please test more times
and verify the pattern?
These errors remind me of this Ubuntu 8.10 bug:
https://bugs.launchpad.net/ubuntu/+bug/295795
This bug only shows up on discs burnt with Brasero, never on discs burnt
with K3b.
Regards, Peter.
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