Unable to reread SCSI optical disks

[Alan Cox]

> My problem comes when I unmount the disk, eject it and insert a
> different disk. It appears to mount ok but when I look at the
> data it has the directory structure that was on the old disk
> and I am unable to read anything. Is there some reason why
> it did not reread the directory structure?

Not sure.

> Jan 24 14:13:08 zeus kernel: Detected scsi removable disk sdb at scsi2, channel 0, id 4, lun 0

it realised it was removable 

> Jan 24 14:13:08 zeus kernel: Wrong buffer length supplied for request sense (256)

These are a bad sign though - something is going astray


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