linux-kernel - Re: Possible problems reading a DVD-RAM disc

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Date:	Fri, 24 Aug 2007 17:36:17 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	TheOneKEA <theonekea@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Possible problems reading a DVD-RAM disc

TheOneKEA wrote:
> While doing a long mega-copy from one side of a DVD-RAM disc formatted
> with the vfat filesystem to an smbfs network share, I got lots and
> lots of these in the dmesg:
> 
> Buffer I/O error on device sr0, logical block 4396
> lost page write due to I/O error on sr0
> sr 6:0:0:0: [sr0] Result: hostbyte=0x00 driverbyte=0x08
> sr 6:0:0:0: [sr0] Sense Key : 0x7 [current]
> sr 6:0:0:0: [sr0] <<vendor>> ASC=0x92 ASCQ=0x0ASC=0x92 ASCQ=0x0
> end_request: I/O error, dev sr0, sector 17584
> Buffer I/O error on device sr0, logical block 4396
> lost page write due to I/O error on sr0

Well, the drive is reporting an error on a write to the disc. It's not 
an error code in the MMC5 standard, though, so presumably it's a 
vendor-specific error code.

Not sure why it would be writing to the disc though.. Maybe if the disc 
is mounted read-write it is doing last-access-time updates or something?

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/

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