buffer io error on device sr0?

buffer io error on device sr0?

[Thomas Fjellstrom]

I'm not sure which version it started, but it seems at least 2.6.32-rc3-git2 
has issues with detecting blank DVDR disks.

[220595.198654] cdrom: This disc doesn't have any tracks I recognize!
[220595.298488] sr 3:0:0:0: [sr0] Unhandled sense code
[220595.298492] sr 3:0:0:0: [sr0] Result: hostbyte=DID_OK 
driverbyte=DRIVER_SENSE
[220595.298496] sr 3:0:0:0: [sr0] Sense Key : Blank Check [current]
[220595.298501] sr 3:0:0:0: [sr0] Add. Sense: No additional sense information
[220595.298505] sr 3:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 00 00 00 00 01 00
[220595.298514] end_request: I/O error, dev sr0, sector 0
[220595.298518] Buffer I/O error on device sr0, logical block 0
[220595.304554] sr 3:0:0:0: [sr0] Unhandled sense code
[220595.304562] sr 3:0:0:0: [sr0] Result: hostbyte=DID_OK 
driverbyte=DRIVER_SENSE
[220595.304570] sr 3:0:0:0: [sr0] Sense Key : Blank Check [current]
[220595.304579] sr 3:0:0:0: [sr0] Add. Sense: No additional sense information
[220595.304588] sr 3:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 00 00 00 00 01 00
[220595.304609] end_request: I/O error, dev sr0, sector 0
[220595.304616] Buffer I/O error on device sr0, logical block 0

Unless its supposed to be this way. Although I didn't receive any kind of 
notification when inserting the disk, as I used to (could be a hal/kde error, 
but the logs in dmesg seem to hint otherwise).

-- 
Thomas Fjellstrom
tfjellstrom@shaw.ca

Re: buffer io error on device sr0?

[Robert Hancock]

On 10/13/2009 03:43 AM, Thomas Fjellstrom wrote:
> I'm not sure which version it started, but it seems at least 2.6.32-rc3-git2
> has issues with detecting blank DVDR disks.
>
> [220595.198654] cdrom: This disc doesn't have any tracks I recognize!
> [220595.298488] sr 3:0:0:0: [sr0] Unhandled sense code
> [220595.298492] sr 3:0:0:0: [sr0] Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE
> [220595.298496] sr 3:0:0:0: [sr0] Sense Key : Blank Check [current]
> [220595.298501] sr 3:0:0:0: [sr0] Add. Sense: No additional sense information
> [220595.298505] sr 3:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 00 00 00 00 01 00
> [220595.298514] end_request: I/O error, dev sr0, sector 0
> [220595.298518] Buffer I/O error on device sr0, logical block 0
> [220595.304554] sr 3:0:0:0: [sr0] Unhandled sense code
> [220595.304562] sr 3:0:0:0: [sr0] Result: hostbyte=DID_OK
> driverbyte=DRIVER_SENSE
> [220595.304570] sr 3:0:0:0: [sr0] Sense Key : Blank Check [current]
> [220595.304579] sr 3:0:0:0: [sr0] Add. Sense: No additional sense information
> [220595.304588] sr 3:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 00 00 00 00 01 00
> [220595.304609] end_request: I/O error, dev sr0, sector 0
> [220595.304616] Buffer I/O error on device sr0, logical block 0
>
> Unless its supposed to be this way. Although I didn't receive any kind of
> notification when inserting the disk, as I used to (could be a hal/kde error,
> but the logs in dmesg seem to hint otherwise).

Something tried to read off the disk and the drive reported "no way, 
it's blank". That's all this indicates. Most likely HAL or something is 
doing the read..

Re: buffer io error on device sr0?

[Thomas Fjellstrom]

On Tue October 13 2009, Robert Hancock wrote:
> On 10/13/2009 03:43 AM, Thomas Fjellstrom wrote:
> > I'm not sure which version it started, but it seems at least
> > 2.6.32-rc3-git2 has issues with detecting blank DVDR disks.
> >
> > [220595.198654] cdrom: This disc doesn't have any tracks I recognize!
> > [220595.298488] sr 3:0:0:0: [sr0] Unhandled sense code
> > [220595.298492] sr 3:0:0:0: [sr0] Result: hostbyte=DID_OK
> > driverbyte=DRIVER_SENSE
> > [220595.298496] sr 3:0:0:0: [sr0] Sense Key : Blank Check [current]
> > [220595.298501] sr 3:0:0:0: [sr0] Add. Sense: No additional sense
> > information [220595.298505] sr 3:0:0:0: [sr0] CDB: Read(10): 28 00 00 00
> > 00 00 00 00 01 00 [220595.298514] end_request: I/O error, dev sr0, sector
> > 0
> > [220595.298518] Buffer I/O error on device sr0, logical block 0
> > [220595.304554] sr 3:0:0:0: [sr0] Unhandled sense code
> > [220595.304562] sr 3:0:0:0: [sr0] Result: hostbyte=DID_OK
> > driverbyte=DRIVER_SENSE
> > [220595.304570] sr 3:0:0:0: [sr0] Sense Key : Blank Check [current]
> > [220595.304579] sr 3:0:0:0: [sr0] Add. Sense: No additional sense
> > information [220595.304588] sr 3:0:0:0: [sr0] CDB: Read(10): 28 00 00 00
> > 00 00 00 00 01 00 [220595.304609] end_request: I/O error, dev sr0, sector
> > 0
> > [220595.304616] Buffer I/O error on device sr0, logical block 0
> >
> > Unless its supposed to be this way. Although I didn't receive any kind of
> > notification when inserting the disk, as I used to (could be a hal/kde
> > error, but the logs in dmesg seem to hint otherwise).
> 
> Something tried to read off the disk and the drive reported "no way,
> it's blank". That's all this indicates. Most likely HAL or something is
> doing the read..

Ah, I was reading it as "Someone is checking for a disk, lets return an error 
instead of just saying the disk is blank".

Thanks for the clarification.

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-- 
Thomas Fjellstrom
tfjellstrom@shaw.ca