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
The DVD-RAM is detected like so (my system is an nVidia nForce 590
SLI, with kernel 2.6.22.1 and the new SCSI-using PATA/SATA drivers in
use):
pata_amd 0000:00:0c.0: version 0.3.8
PCI: Setting latency timer of device 0000:00:0c.0 to 64
scsi6 : pata_amd
scsi7 : pata_amd
ata7: PATA max UDMA/133 cmd 0x00000000000101f0 ctl 0x00000000000103f6
bmdma 0x000000000001f400 irq 14
ata8: PATA max UDMA/133 cmd 0x0000000000010170 ctl 0x0000000000010376
bmdma 0x000000000001f408 irq 15
ata7.00: ATAPI: MATSHITADVD-RAM LF-D310, A123, max UDMA/33
ata7.00: configured for UDMA/33
ata8: port disabled. ignoring.
scsi 6:0:0:0: CD-ROM MATSHITA DVD-RAM LF-D310 A123 PQ: 0 ANSI: 5
sr0: scsi3-mmc drive: 0x/0x dvd-ram cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.20
sr 6:0:0:0: Attached scsi CD-ROM sr0
Are the above errors related to media flaws, drive flaws, driver
flaws, or usage flaws (i.e. "I copied $LARGE_AMOUNT from a DVD-RAM
disc to a network share", "Don't do that.")?
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