Matthew Wilcox wrote:
I've ported the scsi_ram driver [1] to libata.  It could use a lot more
work -- there's a lot of stuff in the identify page that I haven't
filled in, and there's a lot of commands it doesn't even try to execute.

For example, when you unload the driver, you get the mildly disturbing
messages:

sd 12:0:0:0: [sdb] Stopping disk
sd 12:0:0:0: [sdb] START_STOP FAILED
sd 12:0:0:0: [sdb] Result: hostbyte=DID_BAD_TARGET 
driverbyte=DRIVER_OK,SUGGEST_OK

..

I see messages like those with *established* libata drivers from time to time.
It could just be a bug in the shutdown sequence, somewhere between libata,
SCSI, block layer, and the device model in general.  Or not.

Cheers
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